Remove libGLU

It's been moved to its own repository, found at
	http://cgit.freedesktop.org/mesa/glu/

Acked-by: Kenneth Graunke <[email protected]>

97 files changed, 0 insertions, 18531 deletions

diff --git a/src/glu/sgi/libnurbs/internals/arc.cc b/src/glu/sgi/libnurbs/internals/arc.cc
deleted file mode 100644
index cd4c4048a0a..00000000000
--- a/src/glu/sgi/libnurbs/internals/arc.cc
+++ /dev/null
@@ -1,346 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * arc.c++
- *
- */
-
-#include <stdio.h>
-#include "glimports.h"
-#include "mystdio.h"
-#include "myassert.h"
-#include "arc.h"
-#include "bin.h"
-#include "pwlarc.h"
-#include "simplemath.h"
-
-/* local preprocessor definitions */
-#define ZERO		0.00001/*0.000001*/
-
-const int	Arc::bezier_tag = (1<<13);
-const int	Arc::arc_tag = (1<<3);
-const int	Arc::tail_tag = (1<<6);
-
-/*--------------------------------------------------------------------------
- * makeSide - attach a pwl arc to an arc and mark it as a border arc
- *--------------------------------------------------------------------------
- */
-
-void
-Arc::makeSide( PwlArc *pwl, arc_side side )
-{
-    assert( pwl != 0);
-    assert( pwlArc == 0 );
-    assert( pwl->npts > 0 );
-    assert( pwl->pts != 0);
-    pwlArc = pwl;
-    clearbezier();
-    setside( side );
-}
-
-
-/*--------------------------------------------------------------------------
- * numpts - count number of points on arc loop
- *--------------------------------------------------------------------------
- */
-
-int
-Arc::numpts( void )
-{
-    Arc_ptr jarc = this;
-    int npts = 0;
-    do {
-	npts += jarc->pwlArc->npts;
-	jarc = jarc->next;
-    } while( jarc != this );
-    return npts;
-}
-
-/*--------------------------------------------------------------------------
- * markverts - mark each point with id of arc
- *--------------------------------------------------------------------------
- */
-
-void
-Arc::markverts( void )
-{
-    Arc_ptr jarc = this;
-        
-    do {
-	TrimVertex *p = jarc->pwlArc->pts;
-	for( int i=0; i<jarc->pwlArc->npts; i++ )
-	    p[i].nuid = jarc->nuid;
-	jarc = jarc->next;
-    } while( jarc != this );
-}
-
-/*--------------------------------------------------------------------------
- * getextrema - find axis extrema on arc loop
- *--------------------------------------------------------------------------
- */
-
-void
-Arc::getextrema( Arc_ptr extrema[4] )
-{
-    REAL leftpt, botpt, rightpt, toppt;
-
-    extrema[0] = extrema[1] = extrema[2] = extrema[3] = this;
-
-    leftpt = rightpt = this->tail()[0];
-    botpt  = toppt   = this->tail()[1];
-
-    for( Arc_ptr jarc = this->next; jarc != this; jarc = jarc->next ) {
-	if ( jarc->tail()[0] <	leftpt ||
-	    (jarc->tail()[0] <= leftpt && jarc->rhead()[0]<=leftpt))  {
-	    leftpt = jarc->pwlArc->pts->param[0];
-	    extrema[1] = jarc;
-	}
-	if ( jarc->tail()[0] >	rightpt ||
-	    (jarc->tail()[0] >= rightpt && jarc->rhead()[0] >= rightpt)) {
-	    rightpt = jarc->pwlArc->pts->param[0];
-	    extrema[3] = jarc;
-	}
-	if ( jarc->tail()[1] <	botpt ||
-	    (jarc->tail()[1] <= botpt && jarc->rhead()[1] <= botpt ))  {
-	    botpt = jarc->pwlArc->pts->param[1];
-	    extrema[2] = jarc;
-	}
-	if ( jarc->tail()[1] >	toppt ||
-	    (jarc->tail()[1] >= toppt && jarc->rhead()[1] >= toppt))  {
-	    toppt = jarc->pwlArc->pts->param[1];
-	    extrema[0] = jarc;
-	}
-    }
-}
-
-
-/*-------------------------------------------------------------------------
- * show - print to the stdout the vertices of a pwl arc
- *-------------------------------------------------------------------------
- */
-
-void
-Arc::show()
-{
-#ifndef NDEBUG
-    _glu_dprintf( "\tPWLARC NP: %d FL: 1\n", pwlArc->npts );
-    for( int i = 0; i < pwlArc->npts; i++ ) {
-	 _glu_dprintf( "\t\tVERTEX %f %f\n", pwlArc->pts[i].param[0],
-			pwlArc->pts[i].param[1] );
-    }
-#endif
-}
-
-/*-------------------------------------------------------------------------
- * print - print out the vertices of all pwl arcs on a loop
- *-------------------------------------------------------------------------
- */
-
-void
-Arc::print( void )
-{
-    Arc_ptr jarc = this;
-
-#ifndef NDEBUG
-    _glu_dprintf( "BGNTRIM\n" );
-#endif
-    do {
-	jarc->show( );
-	jarc = jarc->next;
-    } while (jarc != this);
-#ifndef NDEBUG
-    _glu_dprintf("ENDTRIM\n" );
-#endif
-}
-
-/*-------------------------------------------------------------------------
- * isDisconnected - check if tail of arc and head of prev meet
- *-------------------------------------------------------------------------
- */
-
-int
-Arc::isDisconnected( void )
-{
-    if( pwlArc == 0 ) return 0;
-    if( prev->pwlArc == 0 ) return 0;
-
-    REAL *p0 = tail();
-    REAL *p1 = prev->rhead();
-
-    if( ((p0[0] - p1[0]) > ZERO) || ((p1[0] - p0[0]) > ZERO) ||
-	((p0[1] - p1[1]) > ZERO) || ((p1[1] - p0[1]) > ZERO)  ) {
-#ifndef NDEBUG
-	_glu_dprintf( "x coord = %f %f %f\n", p0[0], p1[0], p0[0] - p1[0] );
-	_glu_dprintf( "y coord = %f %f %f\n", p0[1], p1[1], p0[1] - p1[1] );
-#endif
-	return 1;
-    } else {
-	/* average two points together */
-	p0[0] = p1[0] = (p1[0] + p0[0]) * 0.5;
-	p0[1] = p1[1] = (p1[1] + p0[1]) * 0.5;
-	return 0;
-    }
-}
-
-/*-------------------------------------------------------------------------
- * neq_vert - assert that two 2D vertices are not equal
- *-------------------------------------------------------------------------
- */
-
-inline static int
-neq_vert( REAL	*v1, REAL *v2 )
-{
-     return ((v1[0] != v2[0]) || (v1[1] != v2[1] )) ? 1 : 0;
-}
-
-/*-------------------------------------------------------------------------
- * check - verify consistency of a loop, including
- *		1) if pwl, no two consecutive vertices are identical
- *		2) the circular link pointers are valid
- *		3) the geometric info at the head and tail are consistent
- *-------------------------------------------------------------------------
- */
-
-int
-Arc::check( void )
-{
-    if( this == 0 ) return 1;
-    Arc_ptr jarc = this;
-    do {
-	assert( (jarc->pwlArc != 0) || (jarc->bezierArc != 0) );
-
-	if (jarc->prev == 0 || jarc->next == 0) {
-#ifndef NDEBUG
-	    _glu_dprintf( "checkjarc:null next/prev pointer\n");
-	    jarc->print( );
-#endif
-	    return 0;
-	}
-
-	if (jarc->next->prev != jarc) {
-#ifndef NDEBUG
-	    _glu_dprintf( "checkjarc: pointer linkage screwed up\n");
-	    jarc->print( );
-#endif
-	    return 0;
-	}
-
-	if( jarc->pwlArc ) {
-#ifndef NDEBUG
-	    assert( jarc->pwlArc->npts >= 1 );
-	    assert( jarc->pwlArc->npts < 100000 );
-/*
-	    for( int i=0; i < jarc->pwlArc->npts-1; i++ )
-		assert( neq_vert( jarc->pwlArc->pts[i].param,
-			     jarc->pwlArc->pts[i+1].param) );
-*/
-#endif
-	    if( jarc->prev->pwlArc ) {
-		if( jarc->tail()[1] != jarc->prev->rhead()[1] ) {
-#ifndef NDEBUG
-		    _glu_dprintf( "checkjarc: geometric linkage screwed up 1\n");
-		    jarc->prev->show();
-		    jarc->show();
-#endif
-		    return 0;
-		}
-		if( jarc->tail()[0] != jarc->prev->rhead()[0] ) {
-	        
-#ifndef NDEBUG
-		    _glu_dprintf( "checkjarc: geometric linkage screwed up 2\n");
-		    jarc->prev->show();
-		    jarc->show();
-#endif
-		    return 0;
-		}
-	    }
-	    if( jarc->next->pwlArc ) {
-		if( jarc->next->tail()[0] != jarc->rhead()[0] ) {
-#ifndef NDEBUG
-			_glu_dprintf( "checkjarc: geometric linkage screwed up 3\n");
-			jarc->show();
-			jarc->next->show();
-#endif
-			return 0;
-		}
-		if( jarc->next->tail()[1] != jarc->rhead()[1] ) {
-#ifndef NDEBUG
-			_glu_dprintf( "checkjarc: geometric linkage screwed up 4\n");
-			jarc->show();
-			jarc->next->show();
-#endif
-			return 0;
-		}
-	    }
-	    if( jarc->isbezier() ) {
-		assert( jarc->pwlArc->npts == 2 );
-		assert( (jarc->pwlArc->pts[0].param[0] == \
-                        jarc->pwlArc->pts[1].param[0]) ||\
-                        (jarc->pwlArc->pts[0].param[1] == \
-                        jarc->pwlArc->pts[1].param[1]) );
-	    }
-	}
-	jarc = jarc->next;
-    } while (jarc != this);
-    return 1;
-}
-
-
-#define TOL 0.00001
-
-inline long tooclose( REAL x, REAL y )
-{
-    return (glu_abs(x-y) < TOL) ?  1 : 0;
-}
-
-
-/*--------------------------------------------------------------------------
- * append - append a jordan arc to a circularly linked list
- *--------------------------------------------------------------------------
- */
-
-Arc_ptr
-Arc::append( Arc_ptr jarc )
-{
-    if( jarc != 0 ) {
-	next = jarc->next;
-	prev = jarc;
-	next->prev = prev->next = this;
-    } else {
-	next = prev = this;
-    }
-    return this;
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/arc.h b/src/glu/sgi/libnurbs/internals/arc.h
deleted file mode 100644
index ca397f3b1fd..00000000000
--- a/src/glu/sgi/libnurbs/internals/arc.h
+++ /dev/null
@@ -1,139 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * arc.h
- *
- */
-
-#ifndef __gluarc_h_
-#define __gluarc_h_
-
-#include "myassert.h"
-#include "bufpool.h"
-#include "mystdio.h"
-#include "types.h"
-#include "pwlarc.h"
-#include "trimvertex.h"
-
-class Bin;
-class Arc;
-struct BezierArc;	
-
-typedef class Arc *Arc_ptr; 
-
-enum arc_side { arc_none = 0, arc_right, arc_top, arc_left, arc_bottom };
-
-
-class Arc: public PooledObj { /* an arc, in two list, the trim list and bin */
-
-public:
-    static const int bezier_tag;
-    static const int arc_tag;
-    static const int tail_tag;
-    Arc_ptr		prev;		/* trim list pointer */
-    Arc_ptr		next;		/* trim list pointer */
-    Arc_ptr		link;		/* bin pointers */
-    BezierArc *		bezierArc;	/* associated bezier arc */
-    PwlArc *		pwlArc;	/* associated pwl arc */
-    long		type;		/* curve type */
-    long		nuid;
-
-    inline		Arc( Arc *, PwlArc * );
-    inline		Arc( arc_side, long );
-
-    Arc_ptr		append( Arc_ptr );
-    int			check( void );
-    int			isMonotone( void );
-    int			isDisconnected( void );
-    int			numpts( void );
-    void		markverts( void );
-    void		getextrema( Arc_ptr[4] );
-    void		print( void );
-    void		show( void );
-    void		makeSide( PwlArc *, arc_side );
-    inline int		isTessellated() { return pwlArc ? 1 : 0; }
-    inline long 	isbezier() 	{ return type & bezier_tag; }
-    inline void 	setbezier() 	{ type |= bezier_tag; }
-    inline void 	clearbezier() 	{ type &= ~bezier_tag; }
-    inline long		npts() 		{ return pwlArc->npts; }
-    inline TrimVertex *	pts() 		{ return pwlArc->pts; }
-    inline REAL * 	tail() 		{ return pwlArc->pts[0].param; }
-    inline REAL * 	head() 		{ return next->pwlArc->pts[0].param; }
-    inline REAL *	rhead() 	{ return pwlArc->pts[pwlArc->npts-1].param; }
-    inline long		ismarked()	{ return type & arc_tag; }
-    inline void		setmark()	{ type |= arc_tag; }
-    inline void		clearmark()	{ type &= (~arc_tag); }
-    inline void		clearside() 	{ type &= ~(0x7 << 8); }
-    inline void		setside( arc_side s ) { clearside(); type |= (((long)s)<<8); }
-    inline arc_side	getside() 	{ return (arc_side) ((type>>8) & 0x7); }
-    inline int		getitail()	{ return type & tail_tag; }
-    inline void		setitail()	{ type |= tail_tag; }
-    inline void		clearitail()	{ type &= (~tail_tag); }
-};
-
-/*--------------------------------------------------------------------------
- * Arc - initialize a new Arc with the same type and uid of
- *	    a given Arc and a given pwl arc
- *--------------------------------------------------------------------------
- */
-
-inline
-Arc::Arc( Arc *j, PwlArc *p )
-{
-    prev = NULL;
-    next = NULL;
-    link = NULL;
-    bezierArc = NULL;
-    pwlArc = p;
-    type = j->type;
-    nuid = j->nuid;
-}
-
-/*--------------------------------------------------------------------------
- * Arc - initialize a new Arc with the same type and uid of
- *	    a given Arc and a given pwl arc
- *--------------------------------------------------------------------------
- */
-
-inline
-Arc::Arc( arc_side side, long _nuid )
-{
-    prev = NULL;
-    next = NULL;
-    link = NULL;
-    bezierArc = NULL;
-    pwlArc = NULL;
-    type = 0;
-    setside( side );
-    nuid = _nuid;
-}
-
-#endif /* __gluarc_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/arcsorter.cc b/src/glu/sgi/libnurbs/internals/arcsorter.cc
deleted file mode 100644
index 1f85cb7108a..00000000000
--- a/src/glu/sgi/libnurbs/internals/arcsorter.cc
+++ /dev/null
@@ -1,172 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * arcsorter.c++
- *
- */
-
-#ifndef __gluarcsorter_c_
-#define __gluarcsorter_c_
-
-#include "glimports.h"
-#include "arc.h"
-#include "arcsorter.h"
-#include "subdivider.h"
-
-ArcSorter::ArcSorter(Subdivider &s) : Sorter( sizeof( Arc ** ) ), subdivider(s)
-{
-}
-
-int
-ArcSorter::qscmp( char *, char * )
-{
-    _glu_dprintf( "ArcSorter::qscmp: pure virtual called\n" );
-    return 0;
-}
-
-void
-ArcSorter::qsort( Arc **a, int n )
-{
-    Sorter::qsort( (void *) a, n );
-}
-
-void		
-ArcSorter::qsexc( char *i, char *j )// i<-j, j<-i 
-{
-    Arc **jarc1 = (Arc **) i;
-    Arc **jarc2 = (Arc **) j;
-    Arc *tmp = *jarc1;
-    *jarc1 = *jarc2;
-    *jarc2 = tmp;
-}	
-
-void		
-ArcSorter::qstexc( char *i, char *j, char *k )// i<-k, k<-j, j<-i
-{
-    Arc **jarc1 = (Arc **) i;
-    Arc **jarc2 = (Arc **) j;
-    Arc **jarc3 = (Arc **) k;
-    Arc *tmp = *jarc1;
-    *jarc1 = *jarc3;
-    *jarc3 = *jarc2;
-    *jarc2 = tmp;
-}
-  
-
-ArcSdirSorter::ArcSdirSorter( Subdivider &s ) : ArcSorter(s)
-{
-}
-
-int
-ArcSdirSorter::qscmp( char *i, char *j )
-{
-    Arc *jarc1 = *(Arc **) i;
-    Arc *jarc2 = *(Arc **) j;
-
-    int v1 = (jarc1->getitail() ? 0 : (jarc1->pwlArc->npts - 1));
-    int	v2 = (jarc2->getitail() ? 0 : (jarc2->pwlArc->npts - 1));
-
-    REAL diff =  jarc1->pwlArc->pts[v1].param[1] -
-	    	 jarc2->pwlArc->pts[v2].param[1];
-
-    if( diff < 0.0)
-	return -1;
-    else if( diff > 0.0)
-	return 1;
-    else {
-	if( v1 == 0 ) {
-	    if( jarc2->tail()[0] < jarc1->tail()[0] ) {
-	        return subdivider.ccwTurn_sl( jarc2, jarc1 ) ? 1 : -1;
-	    } else {
-	        return subdivider.ccwTurn_sr( jarc2, jarc1 ) ? -1 : 1;
-	    }
-	} else {
-	    if( jarc2->head()[0] < jarc1->head()[0] ) {
-	        return subdivider.ccwTurn_sl( jarc1, jarc2 ) ? -1 : 1;
-	    } else {
-	        return subdivider.ccwTurn_sr( jarc1, jarc2 ) ? 1 : -1;
-	    }
-	}
-    }    
-}
-
-ArcTdirSorter::ArcTdirSorter( Subdivider &s ) : ArcSorter(s)
-{
-}
-
-/*----------------------------------------------------------------------------
- * ArcTdirSorter::qscmp - 
-  *		   compare two axis monotone arcs that are incident 
- *		   to the line T == compare_value. Determine which of the
- *		   two intersects that line with a LESSER S value.  If
- *		   jarc1 does, return 1.  If jarc2 does, return -1. 
- *----------------------------------------------------------------------------
- */
-int
-ArcTdirSorter::qscmp( char *i, char *j )
-{
-    Arc *jarc1 = *(Arc **) i;
-    Arc *jarc2 = *(Arc **) j;
-
-    int v1 = (jarc1->getitail() ? 0 : (jarc1->pwlArc->npts - 1));
-    int	v2 = (jarc2->getitail() ? 0 : (jarc2->pwlArc->npts - 1));
-
-    REAL diff =  jarc1->pwlArc->pts[v1].param[0] -
-	         jarc2->pwlArc->pts[v2].param[0];
- 
-    if( diff < 0.0)
-	return 1;
-    else if( diff > 0.0)
-	return -1;
-    else {
-	if( v1 == 0 ) {
-	    if (jarc2->tail()[1] < jarc1->tail()[1]) {
-	        return subdivider.ccwTurn_tl( jarc2, jarc1 ) ? 1 : -1;
-	    } else {
-	        return subdivider.ccwTurn_tr( jarc2, jarc1 ) ? -1 : 1;
-	    }
-	} else {
-	    if( jarc2->head()[1] < jarc1->head()[1] )  {
-	        return subdivider.ccwTurn_tl( jarc1, jarc2 ) ? -1 : 1;
-	    } else {
-	        return subdivider.ccwTurn_tr( jarc1, jarc2 ) ? 1 : -1;
-	    }
-	}
-    }
-}
-
-
-
-#endif /* __gluarcsorter_c_ */
diff --git a/src/glu/sgi/libnurbs/internals/arcsorter.h b/src/glu/sgi/libnurbs/internals/arcsorter.h
deleted file mode 100644
index a55df926772..00000000000
--- a/src/glu/sgi/libnurbs/internals/arcsorter.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * arcsorter.h
- *
- */
-
-#ifndef __gluarcsorter_h_
-#define __gluarcsorter_h_
-
-#include "sorter.h"
-
-class Arc;
-class Subdivider;
-
-class ArcSorter : private Sorter {
-public:
-			ArcSorter(Subdivider &);
-    void		qsort( Arc **a, int n );
-protected:
-    virtual int		qscmp( char *, char * );
-    Subdivider&		subdivider;
-private:
-    void		qsexc( char *i, char *j );	// i<-j, j<-i 
-    void		qstexc( char *i, char *j, char *k ); // i<-k, k<-j, j<-i 
-};
-
-
-class ArcSdirSorter : public ArcSorter {
-public:
-			ArcSdirSorter( Subdivider & );
-private:
-    int			qscmp( char *, char * );
-};
-
-
-class ArcTdirSorter : public ArcSorter {
-public:
-			ArcTdirSorter( Subdivider & );
-private:
-    int			qscmp( char *, char * );
-};
-
-#endif /* __gluarcsorter_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/arctess.cc b/src/glu/sgi/libnurbs/internals/arctess.cc
deleted file mode 100644
index 29e7cf4c002..00000000000
--- a/src/glu/sgi/libnurbs/internals/arctess.cc
+++ /dev/null
@@ -1,611 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * arctessellator.c++
- *
- */
-
-#include "glimports.h"
-#include "mystdio.h"
-#include "myassert.h"
-#include "arctess.h"
-#include "bufpool.h"
-#include "simplemath.h"
-#include "bezierarc.h"
-#include "trimvertex.h"
-#include "trimvertpool.h"
-
-#define NOELIMINATION
-
-#define steps_function(large, small, rate) (max(1, 1+ (int) ((large-small)/rate)));
-
-/*-----------------------------------------------------------------------------
- * ArcTessellator - construct an ArcTessellator
- *-----------------------------------------------------------------------------
- */
-
-ArcTessellator::ArcTessellator( TrimVertexPool& t, Pool& p ) 
-	: pwlarcpool(p), trimvertexpool(t)
-{
-}
-
-/*-----------------------------------------------------------------------------
- * ~ArcTessellator - destroy an ArcTessellator
- *-----------------------------------------------------------------------------
- */
-
-ArcTessellator::~ArcTessellator( void )
-{
-}
-
-/*-----------------------------------------------------------------------------
- * bezier - construct a bezier arc and attach it to an Arc
- *-----------------------------------------------------------------------------
- */
-
-void
-ArcTessellator::bezier( Arc *arc, REAL s1, REAL s2, REAL t1, REAL t2 )
-{
-    assert( arc != 0 );
-    assert( ! arc->isTessellated() );
-
-#ifndef NDEBUG
-    switch( arc->getside() ) {
-	case arc_left:
-	    assert( s1 == s2 );
-	    assert( t2 < t1 );
-	    break;
-	case arc_right:
-	    assert( s1 == s2 );
-	    assert( t1 < t2 );
-	    break;
-	case arc_top:
-	    assert( t1 == t2 );
-	    assert( s2 < s1 );
-	    break;
-	case arc_bottom:
-	    assert( t1 == t2 );
-	    assert( s1 < s2 );
-	    break;
-	case arc_none:
-	    (void) abort();
-	    break;
-    }
-#endif
-    
-    TrimVertex *p = trimvertexpool.get(2);
-    arc->pwlArc = new(pwlarcpool) PwlArc( 2, p );
-    p[0].param[0] = s1;
-    p[0].param[1] = t1;
-    p[1].param[0] = s2;
-    p[1].param[1] = t2;
-    assert( (s1 == s2) || (t1 == t2) );
-    arc->setbezier();
-}
-
-
-/*-----------------------------------------------------------------------------
- * pwl_left - construct a left boundary pwl arc and attach it to an arc
- *-----------------------------------------------------------------------------
- */
-
-void
-ArcTessellator::pwl_left( Arc *arc, REAL s, REAL t1, REAL t2, REAL rate )
-{
-    assert( t2 < t1 );
-
-/*    if(rate <= 0.06) rate = 0.06;*/
-/*    int nsteps = 1 + (int) ((t1 - t2) / rate ); */
-    int nsteps = steps_function(t1, t2, rate);
-
-
-    REAL stepsize = (t1 - t2) / (REAL) nsteps;
-
-    TrimVertex *newvert = trimvertexpool.get( nsteps+1 );
-    int i;
-    for( i = nsteps; i > 0; i-- ) {
-	newvert[i].param[0] = s;
-	newvert[i].param[1] = t2;
-	t2 += stepsize;
-    }
-    newvert[i].param[0] = s;
-    newvert[i].param[1] = t1;
-
-    arc->makeSide( new(pwlarcpool) PwlArc( nsteps+1, newvert ), arc_left );
-}
-
-/*-----------------------------------------------------------------------------
- * pwl_right - construct a right boundary pwl arc and attach it to an arc
- *-----------------------------------------------------------------------------
- */
-
-void
-ArcTessellator::pwl_right( Arc *arc, REAL s, REAL t1, REAL t2, REAL rate )
-{
-    assert( t1 < t2 );
-
-/*    if(rate <= 0.06) rate = 0.06;*/
-
-/*    int nsteps = 1 + (int) ((t2 - t1) / rate ); */
-    int nsteps = steps_function(t2,t1,rate);
-    REAL stepsize = (t2 - t1) / (REAL) nsteps;
-
-    TrimVertex *newvert = trimvertexpool.get( nsteps+1 );
-    int i;
-    for( i = 0; i < nsteps; i++ ) {
-	newvert[i].param[0] = s;
-	newvert[i].param[1] = t1;
-	t1 += stepsize;
-    }
-    newvert[i].param[0] = s;
-    newvert[i].param[1] = t2;
-
-    arc->makeSide( new(pwlarcpool) PwlArc( nsteps+1, newvert ), arc_right );
-}
-
-
-/*-----------------------------------------------------------------------------
- * pwl_top - construct a top boundary pwl arc and attach it to an arc
- *-----------------------------------------------------------------------------
- */
-
-void
-ArcTessellator::pwl_top( Arc *arc, REAL t, REAL s1, REAL s2, REAL rate )
-{
-    assert( s2 < s1 );
-
-/*    if(rate <= 0.06) rate = 0.06;*/
-
-/*    int nsteps = 1 + (int) ((s1 - s2) / rate ); */
-    int nsteps = steps_function(s1,s2,rate);
-    REAL stepsize = (s1 - s2) / (REAL) nsteps;
-
-    TrimVertex *newvert = trimvertexpool.get( nsteps+1 );
-    int i;
-    for( i = nsteps; i > 0; i-- ) {
-	newvert[i].param[0] = s2;
-	newvert[i].param[1] = t;
-	s2 += stepsize;
-    }
-    newvert[i].param[0] = s1;
-    newvert[i].param[1] = t;
-
-    arc->makeSide( new(pwlarcpool) PwlArc( nsteps+1, newvert ), arc_top );
-}
-
-/*-----------------------------------------------------------------------------
- * pwl_bottom - construct a bottom boundary pwl arc and attach it to an arc
- *-----------------------------------------------------------------------------
- */
-
-void
-ArcTessellator::pwl_bottom( Arc *arc, REAL t, REAL s1, REAL s2, REAL rate )
-{
-    assert( s1 < s2 );
-
-/*    if(rate <= 0.06) rate = 0.06;*/
-
-/*    int nsteps = 1 + (int) ((s2 - s1) / rate ); */
-    int nsteps = steps_function(s2,s1,rate);
-    REAL stepsize = (s2 - s1) / (REAL) nsteps;
-
-    TrimVertex *newvert = trimvertexpool.get( nsteps+1 );
-    int i;
-    for( i = 0; i < nsteps; i++ ) {
-	newvert[i].param[0] = s1;
-	newvert[i].param[1] = t;
-	s1 += stepsize;
-    }
-    newvert[i].param[0] = s2;
-    newvert[i].param[1] = t;
-
-    arc->makeSide( new(pwlarcpool) PwlArc( nsteps+1, newvert ), arc_bottom );
-}
-
-/*-----------------------------------------------------------------------------
- * pwl - construct a pwl arc and attach it to an arc
- *-----------------------------------------------------------------------------
- */
-
-void
-ArcTessellator::pwl( Arc *arc, REAL s1, REAL s2, REAL t1, REAL t2, REAL rate )
-{
-
-/*    if(rate <= 0.06) rate = 0.06;*/
-
-    int snsteps = 1 + (int) (glu_abs(s2 - s1) / rate );
-    int tnsteps = 1 + (int) (glu_abs(t2 - t1) / rate );
-    int nsteps = max(1,max( snsteps, tnsteps ));
-
-    REAL sstepsize = (s2 - s1) / (REAL) nsteps;
-    REAL tstepsize = (t2 - t1) / (REAL) nsteps;
-    TrimVertex *newvert = trimvertexpool.get( nsteps+1 );
-    long i;
-    for( i = 0; i < nsteps; i++ ) {
-	newvert[i].param[0] = s1;
-	newvert[i].param[1] = t1;
-	s1 += sstepsize;
-	t1 += tstepsize;
-    }
-    newvert[i].param[0] = s2;
-    newvert[i].param[1] = t2;
-
-    /* arc->makeSide( new(pwlarcpool) PwlArc( nsteps+1, newvert ), arc_bottom ); */
-    arc->pwlArc = new(pwlarcpool) PwlArc( nsteps+1, newvert );
-
-    arc->clearbezier();
-    arc->clearside( );
-}
-
-
-/*-----------------------------------------------------------------------------
- * tessellateLinear - constuct a linear pwl arc and attach it to an Arc
- *-----------------------------------------------------------------------------
- */
-
-void
-ArcTessellator::tessellateLinear( Arc *arc, REAL geo_stepsize, REAL arc_stepsize, int isrational )
-{
-    assert( arc->pwlArc == NULL );
-    REAL s1, s2, t1, t2;
-
-    //we don't need to scale by arc_stepsize if the trim curve
-    //is piecewise linear. Reason: In pwl_right, pwl_left, pwl_top, pwl_left,
-    //and pwl, the nsteps is computed by deltaU (or V) /stepsize. 
-    //The quantity deltaU/arc_stepsize doesn't have any meaning. And
-    //it causes problems: see bug 517641
-    REAL stepsize = geo_stepsize; /* * arc_stepsize*/;
-
-    BezierArc *b = arc->bezierArc;
-
-    if( isrational ) {
-	s1 = b->cpts[0] / b->cpts[2];
-	t1 = b->cpts[1] / b->cpts[2];
-	s2 = b->cpts[b->stride+0] / b->cpts[b->stride+2];
-	t2 = b->cpts[b->stride+1] / b->cpts[b->stride+2];
-    } else {
-	s1 = b->cpts[0];
-	t1 = b->cpts[1];
-	s2 = b->cpts[b->stride+0];
-	t2 = b->cpts[b->stride+1];
-    }
-    if( s1 == s2 )
-	if( t1 < t2 )
-	    pwl_right( arc, s1, t1, t2, stepsize );
-	else
-	    pwl_left( arc, s1, t1, t2, stepsize );
-    else if( t1 == t2 )
-	if( s1 < s2 ) 
-	    pwl_bottom( arc, t1, s1, s2, stepsize );
-	else
-	    pwl_top( arc, t1, s1, s2, stepsize );
-    else
-	pwl( arc, s1, s2, t1, t2, stepsize );
-}
-
-/*-----------------------------------------------------------------------------
- * tessellateNonlinear - constuct a nonlinear pwl arc and attach it to an Arc
- *-----------------------------------------------------------------------------
- */
-
-void
-ArcTessellator::tessellateNonlinear( Arc *arc, REAL geo_stepsize, REAL arc_stepsize, int isrational )
-{
-    assert( arc->pwlArc == NULL );
-
-    REAL stepsize	= geo_stepsize * arc_stepsize;
-
-    BezierArc *bezierArc = arc->bezierArc;
-
-    REAL size; //bounding box size of the curve in UV 
-    {
-      int i,j;
-      REAL min_u, min_v, max_u,max_v;
-      min_u = max_u = bezierArc->cpts[0];
-      min_v = max_v = bezierArc->cpts[1];
-      for(i=1, j=bezierArc->stride; i<bezierArc->order; i++, j+= bezierArc->stride)
-	{
-	  if(bezierArc->cpts[j] < min_u)
-	    min_u = bezierArc->cpts[j];
-	  if(bezierArc->cpts[j] > max_u)
-	    max_u = bezierArc->cpts[j];
-	  if(bezierArc->cpts[j+1] < min_v)
-	    min_v = bezierArc->cpts[j+1];	  
-	  if(bezierArc->cpts[j+1] > max_v)
-	    max_v = bezierArc->cpts[j+1]; 
-	}
-
-      size = max_u - min_u;
-      if(size < max_v - min_v)
-	size = max_v - min_v;
-    }
-      
-    /*int	nsteps 		= 1 + (int) (1.0/stepsize);*/
-
-    int nsteps = (int) (size/stepsize);
-    if(nsteps <=0)
-      nsteps=1;
-
-    TrimVertex *vert	= trimvertexpool.get( nsteps+1 );
-    REAL dp 		= 1.0/nsteps;
-
-
-    arc->pwlArc 	= new(pwlarcpool) PwlArc();
-    arc->pwlArc->pts 	= vert;
-
-    if( isrational ) {
-        REAL pow_u[MAXORDER], pow_v[MAXORDER], pow_w[MAXORDER];
-    	trim_power_coeffs( bezierArc, pow_u, 0 );
-    	trim_power_coeffs( bezierArc, pow_v, 1 );
-        trim_power_coeffs( bezierArc, pow_w, 2 );
-
-	/* compute first point exactly */
-        REAL *b = bezierArc->cpts;
-	vert->param[0] = b[0]/b[2];
-	vert->param[1] = b[1]/b[2];
-
-	/* strength reduction on p = dp * step would introduce error */
-	int step;
-#ifndef NOELIMINATION
-	int ocanremove = 0;
-#endif
-    	register long order =  bezierArc->order;
-	for( step=1, ++vert; step<nsteps; step++, vert++ ) {
-	    register REAL p = dp * step;
-    	    register REAL u = pow_u[0];
-            register REAL v = pow_v[0];
-	    register REAL w = pow_w[0];
-	    for( register int i = 1; i < order; i++ ) {
-	        u = u * p + pow_u[i];
-	        v = v * p + pow_v[i];
-	        w = w * p + pow_w[i];
-            }
-            vert->param[0] = u/w;
-    	    vert->param[1] = v/w;
-#ifndef NOELIMINATION
-	    REAL ds = glu_abs(vert[0].param[0] - vert[-1].param[0]);
-	    REAL dt = glu_abs(vert[0].param[1] - vert[-1].param[1]);
-	    int canremove = (ds<geo_stepsize && dt<geo_stepsize) ? 1 : 0;
-	    REAL ods=0.0, odt=0.0;
-
-	    if( ocanremove && canremove ) {
-		REAL nds = ds + ods;
-		REAL ndt = dt + odt;
-		if( nds<geo_stepsize && ndt<geo_stepsize ) {
-		    // remove previous point
-		    --vert;
-		    vert[0].param[0] = vert[1].param[0];
-		    vert[0].param[1] = vert[1].param[1];
-		    ods = nds;
-		    odt = ndt;
-		    ocanremove = 1;
-		} else {
-		    ocanremove = canremove;
-		    ods = ds;
-		    odt = dt;
-		}
-	    } else {
-		ocanremove = canremove;
-		ods = ds;
-		odt = dt;
-	    }
-#endif	
-	}
-
-	/* compute last point exactly */
-	b += (order - 1) * bezierArc->stride;
-	vert->param[0] = b[0]/b[2];
-	vert->param[1] = b[1]/b[2];
-
-    } else {
-        REAL pow_u[MAXORDER], pow_v[MAXORDER];
-	trim_power_coeffs( bezierArc, pow_u, 0 );
-	trim_power_coeffs( bezierArc, pow_v, 1 );
-
-	/* compute first point exactly */
-        REAL *b = bezierArc->cpts;
-	vert->param[0] = b[0];
-	vert->param[1] = b[1];
-
-	/* strength reduction on p = dp * step would introduce error */
-	int step;
-#ifndef NOELIMINATION
-	int ocanremove = 0;
-#endif
-    	register long order =  bezierArc->order;
-	for( step=1, ++vert; step<nsteps; step++, vert++ ) {
-	    register REAL p = dp * step;
-	    register REAL u = pow_u[0];
-            register REAL v = pow_v[0];
-            for( register int i = 1; i < bezierArc->order; i++ ) {
-	        u = u * p + pow_u[i];
-	        v = v * p + pow_v[i];
-            }
-            vert->param[0] = u;
-	    vert->param[1] = v;
-#ifndef NOELIMINATION
-	    REAL ds = glu_abs(vert[0].param[0] - vert[-1].param[0]);
-	    REAL dt = glu_abs(vert[0].param[1] - vert[-1].param[1]);
-	    int canremove = (ds<geo_stepsize && dt<geo_stepsize) ? 1 : 0;
-	    REAL ods=0.0, odt=0.0;
-
-	    if( ocanremove && canremove ) {
-		REAL nds = ds + ods;
-		REAL ndt = dt + odt;
-		if( nds<geo_stepsize && ndt<geo_stepsize ) {
-		    // remove previous point
-		    --vert;
-		    vert[0].param[0] = vert[1].param[0];
-		    vert[0].param[1] = vert[1].param[1];
-		    ods = nds;
-		    odt = ndt;
-		    ocanremove = 1;
-		} else {
-		    ocanremove = canremove;
-		    ods = ds;
-		    odt = dt;
-		}
-	    } else {
-		ocanremove = canremove;
-		ods = ds;
-		odt = dt;
-	    }
-#endif	
-	}
-
-	/* compute last point exactly */
-	b += (order - 1) * bezierArc->stride;
-	vert->param[0] = b[0];
-	vert->param[1] = b[1];
-    }
-    arc->pwlArc->npts = vert - arc->pwlArc->pts + 1;
-/*
-    for( TrimVertex *vt=pwlArc->pts; vt != vert-1; vt++ ) {
-	if( tooclose( vt[0].param[0], vt[1].param[0] ) )
-	    vt[1].param[0] = vt[0].param[0];
-	if( tooclose( vt[0].param[1], vt[1].param[1] ) )
-	    vt[1].param[1] = vt[0].param[1];
-    }
-*/
-}
-
-const REAL ArcTessellator::gl_Bernstein[][MAXORDER][MAXORDER] = {
- {
-  {1, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 }
- },
- {
-  {-1, 1, 0, 0, 0, 0, 0, 0 },
-  {1, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 }
- },
- {
-  {1, -2, 1, 0, 0, 0, 0, 0 },
-  {-2, 2, 0, 0, 0, 0, 0, 0 },
-  {1, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 }
- },
- {
-  {-1, 3, -3, 1, 0, 0, 0, 0 },
-  {3, -6, 3, 0, 0, 0, 0, 0 },
-  {-3, 3, 0, 0, 0, 0, 0, 0 },
-  {1, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 }
- },
- {
-  {1, -4, 6, -4, 1, 0, 0, 0 },
-  {-4, 12, -12, 4, 0, 0, 0, 0 },
-  {6, -12, 6, 0, 0, 0, 0, 0 },
-  {-4, 4, 0, 0, 0, 0, 0, 0 },
-  {1, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 }
- },
- {
-  {-1, 5, -10, 10, -5, 1, 0, 0 },
-  {5, -20, 30, -20, 5, 0, 0, 0 },
-  {-10, 30, -30, 10, 0, 0, 0, 0 },
-  {10, -20, 10, 0, 0, 0, 0, 0 },
-  {-5, 5, 0, 0, 0, 0, 0, 0 },
-  {1, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 }
- },
- {
-  {1, -6, 15, -20, 15, -6, 1, 0 },
-  {-6, 30, -60, 60, -30, 6, 0, 0 },
-  {15, -60, 90, -60, 15, 0, 0, 0 },
-  {-20, 60, -60, 20, 0, 0, 0, 0 },
-  {15, -30, 15, 0, 0, 0, 0, 0 },
-  {-6, 6, 0, 0, 0, 0, 0, 0 },
-  {1, 0, 0, 0, 0, 0, 0, 0 },
-  {0, 0, 0, 0, 0, 0, 0, 0 }
- },
- {
-  {-1, 7, -21, 35, -35, 21, -7, 1 },
-  {7, -42, 105, -140, 105, -42, 7, 0 },
-  {-21, 105, -210, 210, -105, 21, 0, 0 },
-  {35, -140, 210, -140, 35, 0, 0, 0 },
-  {-35, 105, -105, 35, 0, 0, 0, 0 },
-  {21, -42, 21, 0, 0, 0, 0, 0 },
-  {-7, 7, 0, 0, 0, 0, 0, 0 },
-  {1, 0, 0, 0, 0, 0, 0, 0 }
- }};
-
-
-/*-----------------------------------------------------------------------------
- * trim_power_coeffs - compute power basis coefficients from bezier coeffients
- *-----------------------------------------------------------------------------
- */
-void
-ArcTessellator::trim_power_coeffs( BezierArc *bez_arc, REAL *p, int coord )
-{
-    register int stride = bez_arc->stride;
-    register int order = bez_arc->order;
-    register REAL *base = bez_arc->cpts + coord;
-
-    REAL const (*mat)[MAXORDER][MAXORDER] = &gl_Bernstein[order-1];
-    REAL const (*lrow)[MAXORDER] = &(*mat)[order];
-
-    /* WIN32 didn't like the following line within the for-loop */
-    REAL const (*row)[MAXORDER] =  &(*mat)[0];
-    for( ; row != lrow; row++ ) {
-	register REAL s = 0.0;
-	register REAL *point = base;
-	register REAL const *mlast = *row + order;
-	for( REAL const *m = *row; m != mlast; m++, point += stride ) 
-	    s += *(m) * (*point);
-	*(p++) = s;
-    }
-}
diff --git a/src/glu/sgi/libnurbs/internals/arctess.h b/src/glu/sgi/libnurbs/internals/arctess.h
deleted file mode 100644
index 7802af90c0a..00000000000
--- a/src/glu/sgi/libnurbs/internals/arctess.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * arctess.h
- *
- */
-
-#ifndef __gluarctess_h_
-#define __gluarctess_h_
-
-#include "defines.h"
-#include "types.h"
-#include "arc.h"
-
-struct BezierArc;
-class Pool;
-class TrimVertexPool;
-
-class ArcTessellator {
-public:
-			ArcTessellator( TrimVertexPool&, Pool& );
-			~ArcTessellator( void );
-    void		bezier( Arc_ptr, REAL, REAL, REAL, REAL );
-    void		pwl( Arc_ptr, REAL, REAL, REAL, REAL, REAL );
-    void		pwl_left( Arc_ptr, REAL, REAL, REAL, REAL );
-    void		pwl_right( Arc_ptr, REAL, REAL, REAL, REAL );
-    void		pwl_top( Arc_ptr, REAL, REAL, REAL, REAL );
-    void		pwl_bottom( Arc_ptr, REAL, REAL, REAL, REAL );
-    void		tessellateLinear( Arc_ptr, REAL, REAL, int );
-    void		tessellateNonlinear( Arc_ptr, REAL, REAL, int );
-private:
-    static const REAL 	gl_Bernstein[][MAXORDER][MAXORDER];
-    Pool&		pwlarcpool;
-    TrimVertexPool&	trimvertexpool;
-    static void		trim_power_coeffs( BezierArc *, REAL[MAXORDER], int );
-};
-
-#endif /* __gluarctess_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/backend.cc b/src/glu/sgi/libnurbs/internals/backend.cc
deleted file mode 100644
index 27b41ebb29e..00000000000
--- a/src/glu/sgi/libnurbs/internals/backend.cc
+++ /dev/null
@@ -1,588 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * backend.c++
- *
- */
-
-/* Bezier surface backend
-	- interprets display mode (wireframe,shaded,...)
-*/
-#include <stdio.h>
-#include "glimports.h"
-#include "mystdio.h"
-#include "backend.h"
-#include "basiccrveval.h"
-#include "basicsurfeval.h"
-
-#define NOWIREFRAME
-
-
-/*-------------------------------------------------------------------------
- * bgnsurf - preamble to surface definition and evaluations
- *-------------------------------------------------------------------------
- */
-void
-Backend::bgnsurf( int wiretris, int wirequads, long nuid )
-{
-/*#ifndef NOWIREFRAME*/ //need this for old version
-    wireframetris = wiretris;
-    wireframequads = wirequads;
-/*#endif*/
-
-    /*in the spec, GLU_DISPLAY_MODE is either
-     * GLU_FILL
-     * GLU_OUTLINE_POLY
-     * GLU_OUTLINE_PATCH.
-     *In fact, GLU_FLL is has the same effect as
-     * set GL_FRONT_AND_BACK to be GL_FILL
-     * and GLU_OUTLINE_POLY is the same as set 
-     *     GL_FRONT_AND_BACK to be GL_LINE
-     *It is more efficient to do this once at the beginning of
-     *each surface than to do it for each primitive.
-     *   The internal has more options: outline_triangle and outline_quad
-     *can be seperated. But since this is not in spec, and more importantly,
-     *this is not so useful, so we don't need to keep this option.
-     */
-
-    surfaceEvaluator.bgnmap2f( nuid );
-
-    if(wiretris)
-      surfaceEvaluator.polymode(N_MESHLINE);
-    else
-      surfaceEvaluator.polymode(N_MESHFILL);
-}
-
-void
-Backend::patch( REAL ulo, REAL uhi, REAL vlo, REAL vhi )
-{
-    surfaceEvaluator.domain2f( ulo, uhi, vlo, vhi );
-}
-
-void
-Backend::surfbbox( long type, REAL *from, REAL *to )
-{
-    surfaceEvaluator.range2f( type, from, to );
-}
-
-/*-------------------------------------------------------------------------
- * surfpts - pass a desription of a surface map
- *-------------------------------------------------------------------------
- */
-void 
-Backend::surfpts(
-    long type, 		/* geometry, color, texture, normal	*/
-    REAL *pts, 		/* control points			*/
-    long ustride,	/* distance to next point in u direction */
-    long vstride,	/* distance to next point in v direction */
-    int uorder,	/* u parametric order			*/
-    int vorder,	/* v parametric order			*/
-    REAL ulo,		/* u lower bound			*/
-    REAL uhi,		/* u upper bound			*/
-    REAL vlo,		/* v lower bound			*/
-    REAL vhi )		/* v upper bound			*/
-{
-    surfaceEvaluator.map2f( type,ulo,uhi,ustride,uorder,vlo,vhi,vstride,vorder,pts );
-    surfaceEvaluator.enable( type );
-}
-
-/*-------------------------------------------------------------------------
- * surfgrid - define a lattice of points with origin and offset
- *-------------------------------------------------------------------------
- */
-void
-Backend::surfgrid( REAL u0, REAL u1, long nu, REAL v0, REAL v1, long nv )
-{
-    surfaceEvaluator.mapgrid2f( nu, u0, u1, nv, v0, v1 );
-}
-
-/*-------------------------------------------------------------------------
- * surfmesh - evaluate a mesh of points on lattice
- *-------------------------------------------------------------------------
- */
-void
-Backend::surfmesh( long u, long v, long n, long m )
-{
-#ifndef NOWIREFRAME
-    if( wireframequads ) {
-	long v0,  v1;
-	long u0f = u, u1f = u+n;
-	long v0f = v, v1f = v+m;
-	long parity = (u & 1);
-
-        for( v0 = v0f, v1 = v0f++ ; v0<v1f; v0 = v1, v1++ ) {
-	    surfaceEvaluator.bgnline();
-	    for( long u = u0f; u<=u1f; u++ ) {
-		if( parity ) {
-		    surfaceEvaluator.evalpoint2i( u, v0 );
-		    surfaceEvaluator.evalpoint2i( u, v1 );
-		} else {
-		    surfaceEvaluator.evalpoint2i( u, v1 );
-		    surfaceEvaluator.evalpoint2i( u, v0 );
-		}
-		parity = 1 - parity;
-	    }
-	    surfaceEvaluator.endline();
-	}
-    } else {
-	surfaceEvaluator.mapmesh2f( N_MESHFILL, u, u+n, v, v+m );
-    }
-#else
-    if( wireframequads ) {
-
-	surfaceEvaluator.mapmesh2f( N_MESHLINE, u, u+n, v, v+m );
-    } else {
-
-	surfaceEvaluator.mapmesh2f( N_MESHFILL, u, u+n, v, v+m );
-    }
-#endif
-}
-
-/*-------------------------------------------------------------------------
- * endsurf - postamble to surface
- *-------------------------------------------------------------------------
- */
-void
-Backend::endsurf( void )
-{
-    surfaceEvaluator.endmap2f();
-}
-
-/***************************************/
-void
-Backend::bgntfan( void )
-{
-  surfaceEvaluator.bgntfan();
-/*
-  if(wireframetris)	
-    surfaceEvaluator.polymode( N_MESHLINE );
-  else
-    surfaceEvaluator.polymode( N_MESHFILL );
-*/
-}
-
-void
-Backend::endtfan( void )
-{
-   surfaceEvaluator.endtfan();
-}
-
-void
-Backend::bgnqstrip( void )
-{
-   surfaceEvaluator.bgnqstrip();
-/*
-  if(wireframequads)
-    surfaceEvaluator.polymode( N_MESHLINE );
-  else
-    surfaceEvaluator.polymode( N_MESHFILL );    
-*/
-}
-
-void
-Backend::endqstrip( void )
-{
-   surfaceEvaluator.endqstrip();
-}
-
-void
-Backend::evalUStrip(int n_upper, REAL v_upper, REAL* upper_val,
-                       int n_lower, REAL v_lower, REAL* lower_val
-                       )
-{
-	surfaceEvaluator.evalUStrip(n_upper, v_upper, upper_val, 
-				      n_lower, v_lower, lower_val);
-}
-
-void 
-Backend::evalVStrip(int n_left, REAL u_left, REAL* left_val, 
-		    int n_right, REAL u_right, REAL* right_val
-		    )
-{
-  surfaceEvaluator.evalVStrip(n_left, u_left, left_val,
-				n_right, u_right, right_val);
-}
-
-/***************************************/
-   
-
-/*-------------------------------------------------------------------------
- * bgntmesh - preamble to a triangle mesh
- *-------------------------------------------------------------------------
- */
-void
-Backend::bgntmesh( const char * )		
-{
-#ifndef NOWIREFRAME
-
-    meshindex = 0;	/* I think these need to be initialized to zero */
-    npts = 0;
-
-    if( !wireframetris ) {
-        surfaceEvaluator.bgntmesh();
-    }
-#else
-
-    if( wireframetris ) {
-        surfaceEvaluator.bgntmesh();
-	surfaceEvaluator.polymode( N_MESHLINE );
-    } else {
-        surfaceEvaluator.bgntmesh();
-	surfaceEvaluator.polymode( N_MESHFILL );
-    }
-#endif
-}
-
-void
-Backend::tmeshvert( GridTrimVertex *v )
-{
-    if( v->isGridVert() ) {
-	tmeshvert( v->g );
-    } else {
-	tmeshvert( v->t );
-    }
-}
-
-void
-Backend::tmeshvertNOGE(TrimVertex *t)
-{
-//	surfaceEvaluator.inDoEvalCoord2NOGE( t->param[0], t->param[1], temp, ttt);
-#ifdef USE_OPTTT
-	surfaceEvaluator.inDoEvalCoord2NOGE( t->param[0], t->param[1], t->cache_point, t->cache_normal);    
-#endif
-}
-
-//opt for a line with the same u.
-void
-Backend::tmeshvertNOGE_BU(TrimVertex *t)
-{
-#ifdef USE_OPTTT
-	surfaceEvaluator.inDoEvalCoord2NOGE_BU( t->param[0], t->param[1], t->cache_point, t->cache_normal);    
-#endif
-}
-
-//opt for a line with the same v.
-void
-Backend::tmeshvertNOGE_BV(TrimVertex *t)
-{
-#ifdef USE_OPTTT
-	surfaceEvaluator.inDoEvalCoord2NOGE_BV( t->param[0], t->param[1], t->cache_point, t->cache_normal);    
-#endif
-}
-
-void
-Backend::preEvaluateBU(REAL u)
-{
-	surfaceEvaluator.inPreEvaluateBU_intfac(u);
-}
-
-void 
-Backend::preEvaluateBV(REAL v)
-{
-	surfaceEvaluator.inPreEvaluateBV_intfac(v);
-}
-
-
-/*-------------------------------------------------------------------------
- * tmeshvert - evaluate a point on a triangle mesh
- *-------------------------------------------------------------------------
- */
-void
-Backend::tmeshvert( TrimVertex *t )
-{
-
-#ifndef NOWIREFRAME
-    const long nuid = t->nuid;
-#endif
-    const REAL u = t->param[0];
-    const REAL v = t->param[1];
-
-#ifndef NOWIREFRAME
-    npts++;
-    if( wireframetris ) {
-	if( npts >= 3 ) {
-	    surfaceEvaluator.bgnclosedline();
-	    if( mesh[0][2] == 0 )
-		surfaceEvaluator.evalcoord2f( mesh[0][3], mesh[0][0], mesh[0][1] );
-	    else
-		surfaceEvaluator.evalpoint2i( (long) mesh[0][0], (long) mesh[0][1] );
-	    if( mesh[1][2] == 0 )
-		surfaceEvaluator.evalcoord2f( mesh[1][3], mesh[1][0], mesh[1][1] );
-	    else
-		surfaceEvaluator.evalpoint2i( (long) mesh[1][0], (long) mesh[1][1] );
-	    surfaceEvaluator.evalcoord2f( nuid, u, v );
-	    surfaceEvaluator.endclosedline();
-	}
-        mesh[meshindex][0] = u;
-        mesh[meshindex][1] = v;
-	mesh[meshindex][2] = 0;
-	mesh[meshindex][3] = nuid;
-        meshindex = (meshindex+1) % 2;
-    } else {
-	surfaceEvaluator.evalcoord2f( nuid, u, v );
-    }
-#else
-          
-          surfaceEvaluator.evalcoord2f( 0, u, v );
-//for uninitial memory read          surfaceEvaluator.evalcoord2f( nuid, u, v );
-#endif
-}
-
-//the same as tmeshvert(trimvertex), for efficiency purpose
-void
-Backend::tmeshvert( REAL u, REAL v )
-{
-#ifndef NOWIREFRAME
-    const long nuid = 0;
-    
-    npts++;
-    if( wireframetris ) {
-	if( npts >= 3 ) {
-	    surfaceEvaluator.bgnclosedline();
-	    if( mesh[0][2] == 0 )
-		surfaceEvaluator.evalcoord2f( mesh[0][3], mesh[0][0], mesh[0][1] );
-	    else
-		surfaceEvaluator.evalpoint2i( (long) mesh[0][0], (long) mesh[0][1] );
-	    if( mesh[1][2] == 0 )
-		surfaceEvaluator.evalcoord2f( mesh[1][3], mesh[1][0], mesh[1][1] );
-	    else
-		surfaceEvaluator.evalpoint2i( (long) mesh[1][0], (long) mesh[1][1] );
-	    surfaceEvaluator.evalcoord2f( nuid, u, v );
-	    surfaceEvaluator.endclosedline();
-	}
-        mesh[meshindex][0] = u;
-        mesh[meshindex][1] = v;
-	mesh[meshindex][2] = 0;
-	mesh[meshindex][3] = nuid;
-        meshindex = (meshindex+1) % 2;
-    } else {
-	surfaceEvaluator.evalcoord2f( nuid, u, v );
-    }
-#else
-          
-          surfaceEvaluator.evalcoord2f( 0, u, v );
-#endif
-}
-
-/*-------------------------------------------------------------------------
- * tmeshvert - evaluate a grid point of a triangle mesh
- *-------------------------------------------------------------------------
- */
-void
-Backend::tmeshvert( GridVertex *g )
-{
-    const long u = g->gparam[0];
-    const long v = g->gparam[1];
-
-#ifndef NOWIREFRAME
-    npts++;
-    if( wireframetris ) {
-	if( npts >= 3 ) {
-	    surfaceEvaluator.bgnclosedline();
-	    if( mesh[0][2] == 0 )
-		surfaceEvaluator.evalcoord2f( (long) mesh[0][3], mesh[0][0], mesh[0][1] );
-	    else
-		surfaceEvaluator.evalpoint2i( (long) mesh[0][0], (long) mesh[0][1] );
-	    if( mesh[1][2] == 0 )
-		surfaceEvaluator.evalcoord2f( (long) mesh[1][3], mesh[1][0], mesh[1][1] );
-	    else
-		surfaceEvaluator.evalpoint2i( (long) mesh[1][0], (long) mesh[1][1] );
-	    surfaceEvaluator.evalpoint2i( u, v );
-	    surfaceEvaluator.endclosedline();
-	}
-        mesh[meshindex][0] = u;
-        mesh[meshindex][1] = v;
-	mesh[meshindex][2] = 1;
-        meshindex = (meshindex+1) % 2;
-    } else {
-        surfaceEvaluator.evalpoint2i( u, v );
-    }
-#else
-    surfaceEvaluator.evalpoint2i( u, v );
-#endif
-}
-
-/*-------------------------------------------------------------------------
- * swaptmesh - perform a swap of the triangle mesh pointers
- *-------------------------------------------------------------------------
- */
-void
-Backend::swaptmesh( void )
-{
-#ifndef NOWIREFRAME
-    if( wireframetris ) {
-        meshindex = 1 - meshindex;
-    } else {
-	surfaceEvaluator.swaptmesh();
-    }
-#else
-    surfaceEvaluator.swaptmesh();
-#endif
-}
-
-/*-------------------------------------------------------------------------
- * endtmesh - postamble to triangle mesh
- *-------------------------------------------------------------------------
- */
-void
-Backend::endtmesh( void )
-{
-#ifndef NOWIREFRAME
-    if( ! wireframetris )
-        surfaceEvaluator.endtmesh();
-#else
-    surfaceEvaluator.endtmesh();
-/*    surfaceEvaluator.polymode( N_MESHFILL );*/
-#endif
-}
-
-
-/*-------------------------------------------------------------------------
- * bgnoutline - preamble to outlined rendering
- *-------------------------------------------------------------------------
- */
-void
-Backend::bgnoutline( void )
-{
-    surfaceEvaluator.bgnline();
-}
-
-/*-------------------------------------------------------------------------
- * linevert - evaluate a point on an outlined contour
- *-------------------------------------------------------------------------
- */
-void
-Backend::linevert( TrimVertex *t )
-{
-    surfaceEvaluator.evalcoord2f( t->nuid, t->param[0], t->param[1] );
-}
-
-/*-------------------------------------------------------------------------
- * linevert - evaluate a grid point of an outlined contour
- *-------------------------------------------------------------------------
- */
-void
-Backend::linevert( GridVertex *g )
-{
-    surfaceEvaluator.evalpoint2i( g->gparam[0], g->gparam[1] );
-}
-
-/*-------------------------------------------------------------------------
- * endoutline - postamble to outlined rendering
- *-------------------------------------------------------------------------
- */
-void
-Backend::endoutline( void )
-{
-    surfaceEvaluator.endline();
-}
-
-/*-------------------------------------------------------------------------
- * triangle - output a triangle 
- *-------------------------------------------------------------------------
- */
-void
-Backend::triangle( TrimVertex *a, TrimVertex *b, TrimVertex *c )
-{
-/*    bgntmesh( "spittriangle" );*/
-    bgntfan();
-    tmeshvert( a );
-    tmeshvert( b );
-    tmeshvert( c );
-    endtfan();
-/*    endtmesh();*/
-}
-
-void 
-Backend::bgncurv( void )
-{
-    curveEvaluator.bgnmap1f( 0 );
-}
-
-void
-Backend::segment( REAL ulo, REAL uhi )
-{
-    curveEvaluator.domain1f( ulo, uhi );
-} 
-
-void 
-Backend::curvpts( 
-    long type,		 	/* geometry, color, texture, normal */
-    REAL *pts, 			/* control points */
-    long stride, 		/* distance to next point */
-    int order,			/* parametric order */
-    REAL ulo,			/* lower parametric bound */
-    REAL uhi )			/* upper parametric bound */
-
-{
-    curveEvaluator.map1f( type, ulo, uhi, stride, order, pts );
-    curveEvaluator.enable( type );
-}
-
-void 
-Backend::curvgrid( REAL u0, REAL u1, long nu )
-{
-    curveEvaluator.mapgrid1f( nu, u0, u1 );
-}
-
-void 
-Backend::curvmesh( long from, long n )
-{
-    curveEvaluator.mapmesh1f( N_MESHFILL, from, from+n );
-}
-
-void 
-Backend::curvpt(REAL u)
-{
-    curveEvaluator.evalcoord1f( 0, u );
-}
-
-void 
-Backend::bgnline( void )		
-{
-    curveEvaluator.bgnline();
-}
-
-void 
-Backend::endline( void )
-{
-    curveEvaluator.endline();
-}
-
-void 
-Backend::endcurv( void )
-{
-    curveEvaluator.endmap1f();
-}
diff --git a/src/glu/sgi/libnurbs/internals/backend.h b/src/glu/sgi/libnurbs/internals/backend.h
deleted file mode 100644
index 6840cb19e92..00000000000
--- a/src/glu/sgi/libnurbs/internals/backend.h
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * backend.h
- *
- */
-
-#ifndef __glubackend_h_
-#define __glubackend_h_
-
-#include "trimvertex.h"
-#include "gridvertex.h"
-#include "gridtrimvertex.h"
-
-class BasicCurveEvaluator;
-class BasicSurfaceEvaluator;
-
-class Backend {
-private:
-    BasicCurveEvaluator&	curveEvaluator;
-    BasicSurfaceEvaluator&	surfaceEvaluator;
-public:
-  			Backend( BasicCurveEvaluator &c, BasicSurfaceEvaluator& e )
-			: curveEvaluator(c), surfaceEvaluator(e) {}
-
-    /* surface backend routines */
-    void		bgnsurf( int, int, long  );
-    void		patch( REAL, REAL, REAL, REAL );
-    void		surfpts( long, REAL *, long, long, int, int,
-          			 REAL, REAL, REAL, REAL );
-    void		surfbbox( long, REAL *, REAL * );
-    void		surfgrid( REAL, REAL, long, REAL, REAL, long ); 
-    void		surfmesh( long, long, long, long ); 
-    void		bgntmesh( const char * );
-    void		endtmesh( void );
-    void		swaptmesh( void );
-    void		tmeshvert( GridTrimVertex * );
-    void		tmeshvert( TrimVertex * );
-    void		tmeshvert( GridVertex * );
-    void		tmeshvert( REAL u,  REAL v );
-    void		linevert( TrimVertex * );
-    void		linevert( GridVertex * );
-    void		bgnoutline( void );
-    void		endoutline( void );
-    void		endsurf( void );
-    void		triangle( TrimVertex*, TrimVertex*, TrimVertex* );
-
-    void                bgntfan();
-    void                endtfan();
-    void                bgnqstrip();
-    void                endqstrip();
-    void                evalUStrip(int n_upper, REAL v_upper, REAL* upper_val, 
-				   int n_lower, REAL v_lower, REAL* lower_val
-				   );
-    void                evalVStrip(int n_left, REAL u_left, REAL* left_val, 
-				   int n_right, REAL v_right, REAL* right_val
-				   );
-    void                tmeshvertNOGE(TrimVertex *t);
-    void                tmeshvertNOGE_BU(TrimVertex *t);
-    void                tmeshvertNOGE_BV(TrimVertex *t);
-    void                preEvaluateBU(REAL u);
-    void                preEvaluateBV(REAL v);
-	
-
-    /* curve backend routines */
-    void		bgncurv( void );
-    void		segment( REAL, REAL );
-    void		curvpts( long, REAL *, long, int, REAL, REAL );
-    void		curvgrid( REAL, REAL, long );
-    void		curvmesh( long, long );
-    void		curvpt( REAL  );  
-    void		bgnline( void );
-    void		endline( void );
-    void		endcurv( void );
-private:
-#ifndef NOWIREFRAME
-    int			wireframetris;
-    int			wireframequads;
-    int			npts;
-    REAL		mesh[3][4];
-    int			meshindex;
-#endif
-};
-
-#endif /* __glubackend_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/basiccrveval.cc b/src/glu/sgi/libnurbs/internals/basiccrveval.cc
deleted file mode 100644
index cc473e4c2a1..00000000000
--- a/src/glu/sgi/libnurbs/internals/basiccrveval.cc
+++ /dev/null
@@ -1,138 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * basiccrveval.c++
- *
- */
-
-#include "mystdio.h"
-#include "types.h"
-#include "basiccrveval.h"
-
-void
-BasicCurveEvaluator::domain1f( REAL, REAL )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "domain1f\n" );
-#endif
-}
-
-void
-BasicCurveEvaluator::range1f( long , REAL *, REAL * )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "range1f\n" );
-#endif
-}
-
-void
-BasicCurveEvaluator::enable( long )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "enable\n" );
-#endif
-}
-
-void
-BasicCurveEvaluator::disable( long )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "disable\n" );
-#endif
-}
-
-void
-BasicCurveEvaluator::bgnmap1f( long )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "bgnmap1f\n" );
-#endif
-}
-
-void
-BasicCurveEvaluator::map1f( long, REAL, REAL, long, long, REAL * )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "map1f\n" );
-#endif
-}
-
-void
-BasicCurveEvaluator::mapgrid1f( long, REAL, REAL )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "mapgrid1f\n" );
-#endif
-}
-
-void
-BasicCurveEvaluator::mapmesh1f( long, long, long )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "mapmesh1f\n" );
-#endif
-}
-
-void
-BasicCurveEvaluator::evalcoord1f( long, REAL )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "evalcoord1f\n" );
-#endif
-}
-
-void
-BasicCurveEvaluator::endmap1f( void )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "endmap1f\n" );
-#endif
-}
-
-void
-BasicCurveEvaluator::bgnline( void )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "bgnline\n" );
-#endif
-}
-
-void
-BasicCurveEvaluator::endline( void )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "endline\n" );
-#endif
-}
diff --git a/src/glu/sgi/libnurbs/internals/basiccrveval.h b/src/glu/sgi/libnurbs/internals/basiccrveval.h
deleted file mode 100644
index 277dc8dc967..00000000000
--- a/src/glu/sgi/libnurbs/internals/basiccrveval.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * basiccurveeval.h
- *
- */
-
-#ifndef __glubasiccrveval_h_
-#define __glubasiccrveval_h_
-
-#include "types.h"
-#include "displaymode.h"
-#include "cachingeval.h"
-
-class BasicCurveEvaluator : public CachingEvaluator {
-public:
-    virtual             ~BasicCurveEvaluator() { /* silence warning*/ }
-    virtual void	domain1f( REAL, REAL );
-    virtual void	range1f( long, REAL *, REAL * );
-
-    virtual void	enable( long );
-    virtual void	disable( long );
-    virtual void	bgnmap1f( long );
-    virtual void	map1f( long, REAL, REAL, long, long, REAL * );
-    virtual void	mapgrid1f( long, REAL, REAL );
-    virtual void	mapmesh1f( long, long, long );
-    virtual void	evalcoord1f( long, REAL );
-    virtual void	endmap1f( void );
-
-    virtual void	bgnline( void );
-    virtual void	endline( void );
-};
-
-#endif /* __glubasiccrveval_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/basicsurfeval.cc b/src/glu/sgi/libnurbs/internals/basicsurfeval.cc
deleted file mode 100644
index fad5dd0ada3..00000000000
--- a/src/glu/sgi/libnurbs/internals/basicsurfeval.cc
+++ /dev/null
@@ -1,232 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * basicsurfaceevaluator.c++
- *
- */
-
-#include "mystdio.h"
-#include "types.h"
-#include "basicsurfeval.h"
-
-#ifdef __WATCOMC__
-#pragma warning 726 10
-#endif
-
-void
-BasicSurfaceEvaluator::domain2f( REAL, REAL, REAL, REAL )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "domain2f\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::polymode( long )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "polymode\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::range2f( long type, REAL *from, REAL *to )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "range2f type %ld, from (%g,%g), to (%g,%g)\n",
-		type, from[0], from[1], to[0], to[1] );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::enable( long )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "enable\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::disable( long )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "disable\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::bgnmap2f( long )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "bgnmap2f\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::endmap2f( void )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "endmap2f\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::map2f( long, REAL, REAL, long, long,
-				    REAL, REAL, long, long,
-			      REAL * )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "map2f\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::mapgrid2f( long, REAL, REAL, long, REAL, REAL )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "mapgrid2f\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::mapmesh2f( long, long, long, long, long )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "mapmesh2f\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::evalcoord2f( long, REAL, REAL )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "evalcoord2f\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::evalpoint2i( long, long )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "evalpoint2i\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::bgnline( void )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "bgnline\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::endline( void )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "endline\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::bgnclosedline( void )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "bgnclosedline\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::endclosedline( void )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "endclosedline\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::bgntfan( void )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "bgntfan\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::endtfan( void )
-{
-}
-
-
-void
-BasicSurfaceEvaluator::bgntmesh( void )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "bgntmesh\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::swaptmesh( void )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "swaptmesh\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::endtmesh( void )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "endtmesh\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::bgnqstrip( void )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "bgnqstrip\n" );
-#endif
-}
-
-void
-BasicSurfaceEvaluator::endqstrip( void )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "endqstrip\n" );
-#endif
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/basicsurfeval.h b/src/glu/sgi/libnurbs/internals/basicsurfeval.h
deleted file mode 100644
index 8fe18a67fb0..00000000000
--- a/src/glu/sgi/libnurbs/internals/basicsurfeval.h
+++ /dev/null
@@ -1,90 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * basicsurfeval.h
- *
- */
-
-#ifndef __glubasicsurfeval_h_
-#define __glubasicsurfeval_h_
-
-#include "types.h"
-#include "displaymode.h"
-#include "cachingeval.h"
-
-class BasicSurfaceEvaluator : public CachingEvaluator {
-public:
-    virtual             ~BasicSurfaceEvaluator() { /* silence warning*/ }
-    virtual void	range2f( long, REAL *, REAL * );
-    virtual void	domain2f( REAL, REAL, REAL, REAL );
-
-    virtual void	enable( long );
-    virtual void	disable( long );
-    virtual void	bgnmap2f( long );
-    virtual void	map2f( long, REAL, REAL, long, long, 
-				     REAL, REAL, long, long, 
-				     REAL *  );
-    virtual void	mapgrid2f( long, REAL, REAL, long,  REAL, REAL );
-    virtual void	mapmesh2f( long, long, long, long, long );
-    virtual void	evalcoord2f( long, REAL, REAL );
-    virtual void	evalpoint2i( long, long );
-    virtual void	endmap2f( void );
-
-    virtual void	polymode( long );
-    virtual void 	bgnline( void );
-    virtual void 	endline( void );
-    virtual void 	bgnclosedline( void );
-    virtual void 	endclosedline( void );
-    virtual void 	bgntmesh( void );
-    virtual void 	swaptmesh( void );
-    virtual void 	endtmesh( void );
-    virtual void 	bgnqstrip( void );
-    virtual void 	endqstrip( void );
-
-    virtual void 	bgntfan( void );
-    virtual void 	endtfan( void );
-
-    virtual void        evalUStrip(int n_upper, REAL v_upper, REAL* upper_val,
-				     int n_lower, REAL v_lower, REAL* lower_val
-      ) = 0;
-
-    virtual void        evalVStrip(int n_left, REAL u_left, REAL* left_val,
-				     int n_right, REAL u_right, REAL* right_val
-      ) = 0;
-    virtual void        inDoEvalCoord2NOGE(REAL u, REAL v, REAL* ret_point, REAL* ret_normal) = 0;
-    virtual void        inDoEvalCoord2NOGE_BU(REAL u, REAL v, REAL* ret_point, REAL* ret_normal) = 0;
-    virtual void        inDoEvalCoord2NOGE_BV(REAL u, REAL v, REAL* ret_point, REAL* ret_normal) = 0;
-    virtual void inPreEvaluateBV_intfac(REAL v ) = 0;
-    virtual void inPreEvaluateBU_intfac(REAL u ) = 0;
-    
-};
-
-#endif /* __glubasicsurfeval_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/bezierarc.h b/src/glu/sgi/libnurbs/internals/bezierarc.h
deleted file mode 100644
index 4acfb094881..00000000000
--- a/src/glu/sgi/libnurbs/internals/bezierarc.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * bezierarc.h
- *
- */
-
-#ifndef __glubezierarc_h
-#define __glubezierarc_h
-
-#include "myassert.h"
-
-class Mapdesc;
-
-struct BezierArc : public PooledObj { /* a bezier arc */
-    REAL *		cpts;		/* control points of arc */
-    int			order;		/* order of arc */
-    int			stride;		/* REAL distance between points */
-    long		type;		/* curve type */
-    Mapdesc *		mapdesc;
-};
-
-#endif /* __glubezierarc_h */
diff --git a/src/glu/sgi/libnurbs/internals/bin.cc b/src/glu/sgi/libnurbs/internals/bin.cc
deleted file mode 100644
index d85bd80dc8b..00000000000
--- a/src/glu/sgi/libnurbs/internals/bin.cc
+++ /dev/null
@@ -1,167 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * bin.c++
- *
- */
-
-#include "glimports.h"
-#include "mystdio.h"
-#include "myassert.h"
-#include "bin.h"
-
-/*----------------------------------------------------------------------------
- * Constructor and destructor
- *----------------------------------------------------------------------------
- */
-Bin::Bin()
-{
-    head = NULL;
-    current = NULL;
-}
-
-Bin::~Bin()
-{
-    assert( head == NULL);
-}
-
-/*----------------------------------------------------------------------------
- * remove_this_arc - remove given Arc_ptr from bin
- *----------------------------------------------------------------------------
- */
-
-void 
-Bin::remove_this_arc( Arc_ptr arc )
-{
-    Arc_ptr *j;
-    for( j = &(head); (*j != 0) && (*j != arc); j = &((*j)->link) );
-
-    if( *j != 0 ) {
-        if( *j == current )
-	    current = (*j)->link;
-	*j = (*j)->link;
-    }
-}
-
-/*----------------------------------------------------------------------------
- * numarcs - count number of arcs in bin
- *----------------------------------------------------------------------------
- */
-
-int
-Bin::numarcs()
-{
-    long count = 0;
-    for( Arc_ptr jarc = firstarc(); jarc; jarc = nextarc() )
-	count++;
-    return count;
-}
-
-/*----------------------------------------------------------------------------
- * adopt - place an orphaned arcs into their new parents bin
- *----------------------------------------------------------------------------
- */
-
-void 
-Bin::adopt()
-{
-    markall();
-
-    Arc_ptr orphan;
-    while( (orphan = removearc()) != NULL ) {
-	for( Arc_ptr parent = orphan->next; parent != orphan; parent = parent->next ) {
-	    if (! parent->ismarked() ) {
-		orphan->link = parent->link;
-		parent->link = orphan;
-		orphan->clearmark();
-		break;
-	    }
-	}
-    }
-}
-
-
-/*----------------------------------------------------------------------------
- * show - print out descriptions of the arcs in the bin
- *----------------------------------------------------------------------------
- */
-
-void
-Bin::show( const char *name )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "%s\n", name );
-    for( Arc_ptr jarc = firstarc(); jarc; jarc = nextarc() )
-        jarc->show( );
-#endif
-}
-
-
-
-/*----------------------------------------------------------------------------
- * markall - mark all arcs with an identifying tag
- *----------------------------------------------------------------------------
- */
-
-void 
-Bin::markall()
-{
-    for( Arc_ptr jarc=firstarc(); jarc; jarc=nextarc() )
-	jarc->setmark();
-}
-
-/*----------------------------------------------------------------------------
- * listBezier - print out all arcs that are untessellated border arcs
- *----------------------------------------------------------------------------
- */
-
-void 
-Bin::listBezier( void )
-{
-    for( Arc_ptr jarc=firstarc(); jarc; jarc=nextarc() ) {
-	if( jarc->isbezier( ) ) {
-    	    assert( jarc->pwlArc->npts == 2 );	
-#ifndef NDEBUG
-	    TrimVertex  *pts = jarc->pwlArc->pts;
-    	    REAL s1 = pts[0].param[0];
-    	    REAL t1 = pts[0].param[1];
-    	    REAL s2 = pts[1].param[0];
-    	    REAL t2 = pts[1].param[1];
-	   _glu_dprintf( "arc (%g,%g) (%g,%g)\n", s1, t1, s2, t2 );
-#endif
-	}
-    }
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/bin.h b/src/glu/sgi/libnurbs/internals/bin.h
deleted file mode 100644
index dd0f878f60e..00000000000
--- a/src/glu/sgi/libnurbs/internals/bin.h
+++ /dev/null
@@ -1,121 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * bin.h
- *
- */
-
-#ifndef __glubin_h_
-#define __glubin_h_
-
-#include "myassert.h"
-#include "arc.h"
-#include "defines.h"
-
-class Bin 
-{ /* a linked list of jordan arcs */
-private:
-    Arc_ptr head;/*first arc on list */
-    Arc_ptr		current;	/* current arc on list */
-public:
-    			Bin();
-			~Bin();
-    inline Arc_ptr	firstarc( void );
-    inline Arc_ptr	nextarc( void );
-    inline Arc_ptr	removearc( void );
-    inline int		isnonempty( void ) { return (head ? 1 : 0); }
-    inline void		addarc( Arc_ptr );
-    void 		remove_this_arc( Arc_ptr );
-    int			numarcs( void );
-    void 		adopt( void );
-    void		markall( void );
-    void		show( const char * );
-    void		listBezier( void );
-};
-
-/*----------------------------------------------------------------------------
- * Bin::addarc - add an Arc_ptr to head of linked list of Arc_ptr
- *----------------------------------------------------------------------------
- */
-
-inline void
-Bin::addarc( Arc_ptr jarc )
-{
-   jarc->link = head;
-   head = jarc;
-}
-
-/*----------------------------------------------------------------------------
- * Bin::removearc - remove first Arc_ptr from bin
- *----------------------------------------------------------------------------
- */
-
-inline Arc_ptr
-Bin::removearc( void )
-{
-    Arc_ptr jarc = head;
-
-    if( jarc ) head = jarc->link;
-    return jarc;
-}
-
-
-/*----------------------------------------------------------------------------
- * BinIter::nextarc - return current arc in bin and advance pointer to next arc
- *----------------------------------------------------------------------------
- */
-
-inline Arc_ptr
-Bin::nextarc( void )
-{
-    Arc_ptr jarc = current;
-
-#ifdef DEBUG
-    assert( jarc->check() != 0 );
-#endif
-
-    if( jarc ) current = jarc->link;
-    return jarc;
-}
-
-/*----------------------------------------------------------------------------
- * BinIter::firstarc - set current arc to first arc of bin advance to next arc
- *----------------------------------------------------------------------------
- */
-
-inline Arc_ptr
-Bin::firstarc( void )
-{
-    current = head;
-    return nextarc( );
-}
-
-#endif /* __glubin_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/bufpool.cc b/src/glu/sgi/libnurbs/internals/bufpool.cc
deleted file mode 100644
index 53ac1a5695d..00000000000
--- a/src/glu/sgi/libnurbs/internals/bufpool.cc
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- *  bufpool.c++
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "bufpool.h"
-
-
-/*-----------------------------------------------------------------------------
- * Pool - allocate a new pool of buffers
- *-----------------------------------------------------------------------------
- */
-Pool::Pool( int _buffersize, int initpoolsize, const char *n )
-{
-    if((unsigned)_buffersize < sizeof(Buffer))
-        buffersize = sizeof(Buffer);
-    else
-        buffersize = _buffersize;
-    initsize	= initpoolsize * buffersize;
-    nextsize	= initsize;
-    name	= n;
-    magic	= is_allocated;
-    nextblock	= 0;
-    curblock	= 0;
-    freelist	= 0;
-    nextfree	= 0;
-    for (int i = 0; i < NBLOCKS; i++) {
-        blocklist[i] = 0;
-    }
-}
-
-/*-----------------------------------------------------------------------------
- * ~Pool - free a pool of buffers and the pool itself
- *-----------------------------------------------------------------------------
- */
-
-Pool::~Pool( void )
-{
-    assert( (this != 0) && (magic == is_allocated) );
-
-    while( nextblock ) {
-	delete [] blocklist[--nextblock];
-        blocklist[nextblock] = 0;
-    }
-    magic = is_free;
-}
-
-
-void Pool::grow( void )
-{
-    assert( (this != 0) && (magic == is_allocated) );
-    curblock = new char[nextsize];
-    blocklist[nextblock++] = curblock;
-    nextfree = nextsize;
-    nextsize *= 2;
-}
-
-/*-----------------------------------------------------------------------------
- * Pool::clear - free buffers associated with pool but keep pool 
- *-----------------------------------------------------------------------------
- */
-
-void 
-Pool::clear( void )
-{
-    assert( (this != 0) && (magic == is_allocated) );
-
-    while( nextblock ) {
-	delete [] blocklist[--nextblock];
-	blocklist[nextblock] = 0;
-    }
-    curblock	= 0;
-    freelist	= 0;
-    nextfree	= 0;
-    if( nextsize > initsize )
-        nextsize /= 2;
-}
diff --git a/src/glu/sgi/libnurbs/internals/bufpool.h b/src/glu/sgi/libnurbs/internals/bufpool.h
deleted file mode 100644
index 0fa9433750c..00000000000
--- a/src/glu/sgi/libnurbs/internals/bufpool.h
+++ /dev/null
@@ -1,141 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * bufpool.h
- *
- */
-
-#ifndef __glubufpool_h_
-#define __glubufpool_h_
-
-#include "gluos.h"
-#include "myassert.h"
-#include "mystdlib.h"
-
-#define NBLOCKS	32
-
-class Buffer {
-	friend class 	Pool;
-	Buffer	*	next;		/* next buffer on free list	*/
-};
-
-class Pool {
-public:
-			Pool( int, int, const char * );
-			~Pool( void );
-    inline void*	new_buffer( void );
-    inline void		free_buffer( void * );
-    void		clear( void );
-    
-private:
-    void		grow( void );
-
-protected:
-    Buffer		*freelist;		/* linked list of free buffers */
-    char		*blocklist[NBLOCKS];	/* blocks of malloced memory */
-    int			nextblock;		/* next free block index */
-    char		*curblock;		/* last malloced block */
-    int			buffersize;		/* bytes per buffer */
-    int			nextsize;		/* size of next block of memory	*/
-    int			nextfree;		/* byte offset past next free buffer */
-    int			initsize;
-    enum Magic { is_allocated = 0xf3a1, is_free = 0xf1a2 };
-    const char		*name;			/* name of the pool */
-    Magic		magic;			/* marker for valid pool */
-};
-
-/*-----------------------------------------------------------------------------
- * Pool::free_buffer - return a buffer to a pool
- *-----------------------------------------------------------------------------
- */
-
-inline void
-Pool::free_buffer( void *b )
-{
-    assert( (this != 0) && (magic == is_allocated) );
-
-    /* add buffer to singly connected free list */
-
-    ((Buffer *) b)->next = freelist;
-    freelist = (Buffer *) b;
-}
-
-
-/*-----------------------------------------------------------------------------
- * Pool::new_buffer - allocate a buffer from a pool
- *-----------------------------------------------------------------------------
- */
-
-inline void * 
-Pool::new_buffer( void )
-{
-    void *buffer;
-
-    assert( (this != 0) && (magic == is_allocated) );
-
-    /* find free buffer */
-
-    if( freelist ) {
-    	buffer = (void *) freelist; 
-    	freelist = freelist->next;
-    } else {
-    	if( ! nextfree )
-    	    grow( );
-    	nextfree -= buffersize;;
-    	buffer = (void *) (curblock + nextfree);
-    }
-    return buffer;
-}
-	
-class PooledObj {
-public:
-    inline void *	operator new( size_t, Pool & );
-    inline void * 	operator new( size_t, void *);
-    inline void * 	operator new( size_t s)
-				{ return ::new char[s]; }
-    inline void 	operator delete( void * ) { assert( 0 ); }
-    inline void         operator delete( void *, Pool & ) { assert( 0 ); }
-    inline void		deleteMe( Pool & );
-};
-
-inline void *
-PooledObj::operator new( size_t, Pool& pool )
-{
-    return pool.new_buffer();
-}
-
-inline void
-PooledObj::deleteMe( Pool& pool )
-{
-    pool.free_buffer( (void *) this );
-}
-
-#endif /* __glubufpool_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/cachingeval.cc b/src/glu/sgi/libnurbs/internals/cachingeval.cc
deleted file mode 100644
index 3fab38c1064..00000000000
--- a/src/glu/sgi/libnurbs/internals/cachingeval.cc
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * cachingeval.c++
- *
- */
-
-#include "cachingeval.h"
-
-int
-CachingEvaluator::canRecord( void )
-{
-    return 0;
-}
-
-int
-CachingEvaluator::canPlayAndRecord( void )
-{
-    return 0;
-}
-
-int
-CachingEvaluator::createHandle( int )
-{
-    return 0;
-}
-
-void
-CachingEvaluator::beginOutput( ServiceMode, int )
-{
-}
-
-void
-CachingEvaluator::endOutput( void )
-{
-} 
-
-void
-CachingEvaluator::discardRecording( int )
-{
-}
-
-void
-CachingEvaluator::playRecording( int )
-{
-}
diff --git a/src/glu/sgi/libnurbs/internals/cachingeval.h b/src/glu/sgi/libnurbs/internals/cachingeval.h
deleted file mode 100644
index b390067a281..00000000000
--- a/src/glu/sgi/libnurbs/internals/cachingeval.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * cachingeval.h
- *
- */
-
-#ifndef __glucachingval_h_
-#define __glucachingval_h_
-
-class CachingEvaluator {
-public:
-    virtual             ~CachingEvaluator() { /* silence warning*/ }
-    enum ServiceMode 	{ play, record, playAndRecord };
-    virtual int		canRecord( void );
-    virtual int		canPlayAndRecord( void );
-    virtual int		createHandle( int handle );
-    virtual void	beginOutput( ServiceMode, int handle );
-    virtual void	endOutput( void ); 
-    virtual void	discardRecording( int handle );
-    virtual void	playRecording( int handle );
-};
-#endif /* __glucachingval_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/ccw.cc b/src/glu/sgi/libnurbs/internals/ccw.cc
deleted file mode 100644
index eb01b7781a7..00000000000
--- a/src/glu/sgi/libnurbs/internals/ccw.cc
+++ /dev/null
@@ -1,565 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * ccw.c++
- *
- */
-
-#include "glimports.h"
-#include "mystdio.h"
-#include "myassert.h"
-#include "subdivider.h"
-#include "types.h"
-#include "arc.h"
-#include "trimvertex.h"
-#include "simplemath.h"
-
-inline int 
-Subdivider::bbox( TrimVertex *a, TrimVertex *b, TrimVertex *c, int p )
-{
-    return bbox( a->param[p], b->param[p], c->param[p], 
-	         a->param[1-p], b->param[1-p], c->param[1-p] ); 
-}
-
-int
-Subdivider::ccwTurn_sr( Arc_ptr j1, Arc_ptr j2 ) // dir = 1
-{
-    register TrimVertex *v1	= &j1->pwlArc->pts[j1->pwlArc->npts-1];
-    register TrimVertex *v1last	= &j1->pwlArc->pts[0];
-    register TrimVertex *v2	= &j2->pwlArc->pts[0];
-    register TrimVertex *v2last	= &j2->pwlArc->pts[j2->pwlArc->npts-1];
-    register TrimVertex *v1next	= v1-1;
-    register TrimVertex *v2next	= v2+1;
-    int sgn;
-
-    assert( v1 != v1last );
-    assert( v2 != v2last );
-
-#ifndef NDEBUG
-    _glu_dprintf( "arc_ccw_turn, p = %d\n", 0 );
-#endif
-
-    // the arcs lie on the line (0 == v1->param[0])
-    if( v1->param[0] == v1next->param[0] && v2->param[0] == v2next->param[0] )
-	return 0;
-
-    if( v2next->param[0] < v2->param[0] || v1next->param[0] < v1->param[0] )
-	::mylongjmp( jumpbuffer, 28 );
-
-    if( v1->param[1] < v2->param[1] )
-	return 0;
-    else if( v1->param[1] > v2->param[1] )
-	return 1;
-
-    while( 1 ) {
-	if( v1next->param[0] < v2next->param[0] ) {
-#ifndef NDEBUG
-	    _glu_dprintf( "case a\n" );
-#endif
-	    assert( v1->param[0] <= v1next->param[0] );
-	    assert( v2->param[0] <= v1next->param[0] );
-	    switch( bbox( v2, v2next, v1next, 1 ) ) {
-		case -1:
-		    return 0;
-		case 0:
-		   sgn = ccw( v1next, v2, v2next );
-		   if( sgn != -1 ) {
-			return sgn;
-		   } else {
-#ifdef DEBUG
-			_glu_dprintf( "decr\n" );
-#endif
-			v1 = v1next--;
-			if( v1 == v1last ) {
-#ifdef DEBUG
-			    _glu_dprintf( "no good results\n" );
-#endif
-			    return 0; // ill-conditioned, guess answer
-			}
-		    }
-		    break;
-		case 1:
-		    return 1;
-	    }
-	} else if( v1next->param[0] > v2next->param[0] ) {
-#ifndef NDEBUG
-	    _glu_dprintf( "case b\n" );
-#endif
-	    assert( v1->param[0] <= v2next->param[0] );
-	    assert( v2->param[0] <= v2next->param[0] );
-	    switch( bbox( v1, v1next, v2next, 1 ) ) {
-		case -1:
-		    return 1;
-		case 0:
-		   sgn = ccw( v1next, v1, v2next );
-		   if( sgn != -1 ) { 
-			return sgn;
-		   } else {
-#ifdef DEBUG
-			_glu_dprintf( "incr\n" );
-#endif
-			v2 = v2next++;
-			if( v2 == v2last ) {
-#ifdef DEBUG
-			    _glu_dprintf( "no good results\n" );
-#endif
-			    return 0; // ill-conditioned, guess answer
-			}
-		    }
-		    break;
-		case 1:
-		    return 0;
-	    }
-	} else {
-#ifndef NDEBUG
-	    _glu_dprintf( "case ab\n" );
-#endif
-	    if( v1next->param[1] < v2next->param[1] )
-		return 0;
-	    else if( v1next->param[1] > v2next->param[1] )
-		return 1;
-	    else {
-#ifdef DEBUG
-		_glu_dprintf( "incr\n" );
-#endif
-		v2 = v2next++;
-		if( v2 == v2last ) {
-#ifdef DEBUG
-		    _glu_dprintf( "no good results\n" );
-#endif
-		    return 0; // ill-conditioned, guess answer
-		}
-	    }
-	}
-    }
-}
-
-int
-Subdivider::ccwTurn_sl( Arc_ptr j1, Arc_ptr j2 ) // dir = 0
-{
-    register TrimVertex *v1	= &j1->pwlArc->pts[j1->pwlArc->npts-1];
-    register TrimVertex *v1last	= &j1->pwlArc->pts[0];
-    register TrimVertex *v2	= &j2->pwlArc->pts[0];
-    register TrimVertex *v2last	= &j2->pwlArc->pts[j2->pwlArc->npts-1];
-    register TrimVertex *v1next	= v1-1;
-    register TrimVertex *v2next	= v2+1;
-    int sgn;
-
-    assert( v1 != v1last );
-    assert( v2 != v2last );
-
-#ifndef NDEBUG
-    _glu_dprintf( "arc_ccw_turn, p = %d\n", 0 );
-#endif
-
-    // the arcs lie on the line (0 == v1->param[0])
-    if( v1->param[0] == v1next->param[0] && v2->param[0] == v2next->param[0] )
-	return 0;
-
-    if( v2next->param[0] > v2->param[0] || v1next->param[0] > v1->param[0] ) 
-	::mylongjmp( jumpbuffer, 28 );
-
-    if( v1->param[1] < v2->param[1] )
-	return 1;
-    else if( v1->param[1] > v2->param[1] )
-	return 0;
-
-    while( 1 ) {
-	if( v1next->param[0] > v2next->param[0] ) {
-#ifndef NDEBUG
-	    _glu_dprintf( "case c\n" );
-#endif
-	    assert( v1->param[0] >= v1next->param[0] );
-	    assert( v2->param[0] >= v1next->param[0] );
-	    switch( bbox( v2next, v2, v1next, 1 ) ) {
-		case -1:
-		    return 1;
-		case 0:
-		    sgn = ccw( v1next, v2, v2next );
-		    if( sgn != -1 ) 
-			return sgn;
-		    else {
-			v1 = v1next--;
-#ifdef DEBUG
-			_glu_dprintf( "decr\n" );
-#endif
-			if( v1 == v1last ) {
-#ifdef DEBUG
-			    _glu_dprintf( "no good results\n" );
-#endif
-			    return 0; // ill-conditioned, guess answer
-			}
-		    }
-		    break;
-		case 1:
-		    return 0;
-	    }
-	} else if( v1next->param[0] < v2next->param[0] ) {
-#ifndef NDEBUG
-	    _glu_dprintf( "case d\n" );
-#endif
-	    assert( v1->param[0] >= v2next->param[0] );
-	    assert( v2->param[0] >= v2next->param[0] );
-	    switch( bbox( v1next, v1, v2next, 1 ) ) {
-		case -1:
-		    return 0;
-		case 0:
-		    sgn = ccw( v1next, v1, v2next );
-		    if( sgn != -1 ) 
-			return sgn;
-		    else {
-			v2 = v2next++;
-#ifdef DEBUG
-			_glu_dprintf( "incr\n" );
-#endif
-			if( v2 == v2last ) {
-#ifdef DEBUG
-			    _glu_dprintf( "no good results\n" );
-#endif
-			    return 0; // ill-conditioned, guess answer
-			}
-		    }
-		    break;
-		case 1:
-		    return 1;
-	    }
-	} else {
-#ifdef DEBUG
-	    _glu_dprintf( "case cd\n" );
-#endif
-	    if( v1next->param[1] < v2next->param[1] )
-		return 1;
-	    else if( v1next->param[1] > v2next->param[1] )
-		return 0;
-	    else {
-		v2 = v2next++;
-#ifdef DEBUG
-		_glu_dprintf( "incr\n" );
-#endif
-		if( v2 == v2last ) {
-#ifdef DEBUG
-		    _glu_dprintf( "no good results\n" );
-#endif
-		    return 0; // ill-conditioned, guess answer
-		}
-	    }
-	}
-    }
-}
-
-int
-Subdivider::ccwTurn_tr( Arc_ptr j1, Arc_ptr j2 ) // dir = 1
-{
-    register TrimVertex *v1	= &j1->pwlArc->pts[j1->pwlArc->npts-1];
-    register TrimVertex *v1last	= &j1->pwlArc->pts[0];
-    register TrimVertex *v2	= &j2->pwlArc->pts[0];
-    register TrimVertex *v2last	= &j2->pwlArc->pts[j2->pwlArc->npts-1];
-    register TrimVertex *v1next	= v1-1;
-    register TrimVertex *v2next	= v2+1;
-    int sgn;
-
-    assert( v1 != v1last );
-    assert( v2 != v2last );
-
-#ifndef NDEBUG
-    _glu_dprintf( "arc_ccw_turn, p = %d\n", 1 );
-#endif
-
-    // the arcs lie on the line (1 == v1->param[1])
-    if( v1->param[1] == v1next->param[1] && v2->param[1] == v2next->param[1] )
-	return 0;
-
-    if( v2next->param[1] < v2->param[1] || v1next->param[1] < v1->param[1] )
-	::mylongjmp( jumpbuffer, 28 );
-
-    if( v1->param[0] < v2->param[0] )
-	return 1;
-    else if( v1->param[0] > v2->param[0] )
-	return 0;
-
-    while( 1 ) {
-	if( v1next->param[1] < v2next->param[1] ) {
-#ifndef NDEBUG
-	    _glu_dprintf( "case a\n" );
-#endif
-	    assert( v1->param[1] <= v1next->param[1] );
-	    assert( v2->param[1] <= v1next->param[1] );
-	    switch( bbox( v2, v2next, v1next, 0 ) ) {
-		case -1:
-		    return 1;
-		case 0:
-		   sgn = ccw( v1next, v2, v2next );
-		   if( sgn != -1 ) {
-			return sgn;
-		   } else {
-#ifdef DEBUG
-			_glu_dprintf( "decr\n" );
-#endif
-			v1 = v1next--;
-			if( v1 == v1last ) {
-#ifdef DEBUG
-			    _glu_dprintf( "no good results\n" );
-#endif
-			    return 0; // ill-conditioned, guess answer
-			}
-		    }
-		    break;
-		case 1:
-		    return 0;
-	    }
-	} else if( v1next->param[1] > v2next->param[1] ) {
-#ifndef NDEBUG
-	    _glu_dprintf( "case b\n" );
-#endif
-	    assert( v1->param[1] <= v2next->param[1] );
-	    assert( v2->param[1] <= v2next->param[1] );
-	    switch( bbox( v1, v1next, v2next, 0 ) ) {
-		case -1:
-		    return 0;
-		case 0:
-		   sgn = ccw( v1next, v1, v2next );
-		   if( sgn != -1 ) { 
-			return sgn;
-		   } else {
-#ifdef DEBUG
-			_glu_dprintf( "incr\n" );
-#endif
-			v2 = v2next++;
-			if( v2 == v2last ) {
-#ifdef DEBUG
-			    _glu_dprintf( "no good results\n" );
-#endif
-			    return 0; // ill-conditioned, guess answer
-			}
-		    }
-		    break;
-		case 1:
-		    return 1;
-	    }
-	} else {
-#ifdef DEBUG
-	    _glu_dprintf( "case ab\n" );
-#endif
-	    if( v1next->param[0] < v2next->param[0] )
-		return 1;
-	    else if( v1next->param[0] > v2next->param[0] )
-		return 0;
-	    else {
-#ifdef DEBUG
-		_glu_dprintf( "incr\n" );
-#endif
-		v2 = v2next++;
-		if( v2 == v2last ) {
-#ifdef DEBUG
-		    _glu_dprintf( "no good results\n" );
-#endif
-		    return 0; // ill-conditioned, guess answer
-		}
-	    }
-	}
-    }
-}
-
-int
-Subdivider::ccwTurn_tl( Arc_ptr j1, Arc_ptr j2 )
-{
-    register TrimVertex *v1	= &j1->pwlArc->pts[j1->pwlArc->npts-1];
-    register TrimVertex *v1last	= &j1->pwlArc->pts[0];
-    register TrimVertex *v2	= &j2->pwlArc->pts[0];
-    register TrimVertex *v2last	= &j2->pwlArc->pts[j2->pwlArc->npts-1];
-    register TrimVertex *v1next	= v1-1;
-    register TrimVertex *v2next	= v2+1;
-    int sgn;
-
-    assert( v1 != v1last );
-    assert( v2 != v2last );
-
-#ifndef NDEBUG
-    _glu_dprintf( "arc_ccw_turn, p = %d\n", 1 );
-#endif
-
-    // the arcs lie on the line (1 == v1->param[1])
-    if( v1->param[1] == v1next->param[1] && v2->param[1] == v2next->param[1] )
-	return 0;
-
-    if( v2next->param[1] > v2->param[1] || v1next->param[1] > v1->param[1] ) 
-	::mylongjmp( jumpbuffer, 28 );
-
-    if( v1->param[0] < v2->param[0] )
-	return 0;
-    else if( v1->param[0] > v2->param[0] )
-	return 1;
-
-    while( 1 ) {
-	if( v1next->param[1] > v2next->param[1] ) {
-#ifndef NDEBUG
-	    _glu_dprintf( "case c\n" );
-#endif
-	    assert( v1->param[1] >= v1next->param[1] );
-	    assert( v2->param[1] >= v1next->param[1] );
-	    switch( bbox( v2next, v2, v1next, 0 ) ) {
-		case -1:
-		    return 0;
-		case 0:
-		    sgn = ccw( v1next, v2, v2next );
-		    if( sgn != -1 ) 
-			return sgn;
-		    else {
-			v1 = v1next--;
-#ifdef DEBUG
-			_glu_dprintf( "decr\n" );
-#endif
-			if( v1 == v1last ) {
-#ifdef DEBUG
-			    _glu_dprintf( "no good results\n" );
-#endif
-			    return 0; // ill-conditioned, guess answer
-			}
-		    }
-		    break;
-		case 1:
-		    return 1;
-	    }
-	} else if( v1next->param[1] < v2next->param[1] ) {
-#ifndef NDEBUG
-	    _glu_dprintf( "case d\n" );
-	    assert( v1->param[1] >= v2next->param[1] );
-	    assert( v2->param[1] >= v2next->param[1] );
-#endif
-	    switch( bbox( v1next, v1, v2next, 0 ) ) {
-		case -1:
-		    return 1;
-		case 0:
-		    sgn = ccw( v1next, v1, v2next );
-		    if( sgn != -1 ) 
-			return sgn;
-		    else {
-			v2 = v2next++;
-#ifdef DEBUG
-			_glu_dprintf( "incr\n" );
-#endif
-			if( v2 == v2last ) {
-#ifdef DEBUG
-			    _glu_dprintf( "no good results\n" );
-#endif
-			    return 0; // ill-conditioned, guess answer
-			}
-		    }
-		    break;
-		case 1:
-		    return 0;
-	    }
-	} else {
-#ifdef DEBUG
-	    _glu_dprintf( "case cd\n" );
-#endif
-	    if( v1next->param[0] < v2next->param[0] )
-		return 0;
-	    else if( v1next->param[0] > v2next->param[0] )
-		return 1;
-	    else {
-		v2 = v2next++;
-#ifdef DEBUG
-		_glu_dprintf( "incr\n" );
-#endif
-		if( v2 == v2last ) {
-#ifdef DEBUG
-		    _glu_dprintf( "no good results\n" );
-#endif
-		    return 0; // ill-conditioned, guess answer
-		}
-	    }
-	}
-    }
-}
-
-
-#ifndef NDEBUG
-int
-Subdivider::bbox( register REAL sa, register REAL sb, register REAL sc,
-      register REAL ta, register REAL tb, register REAL tc )
-#else
-int
-Subdivider::bbox( register REAL sa, register REAL sb, register REAL sc,
-      register REAL   , register REAL   , register REAL    )
-#endif
-{
-#ifndef NDEBUG
-    assert( tc >= ta );
-    assert( tc <= tb );
-#endif
-
-    if( sa < sb ) {
-	if( sc <= sa ) {
-	    return -1;
-	} else if( sb <= sc ) {
-	    return 1;
-	} else {
-	    return 0;
-	}
-    } else if( sa > sb ) {
-	if( sc >= sa ) {
-	    return 1;
-	} else if( sb >= sc ) {
-	    return -1;
-	} else {
-	    return 0;
-	}
-    } else {
-	if( sc > sa ) {
-	    return 1;
-	} else if( sb > sc ) {
-	    return -1;
-	} else {
-	    return 0;
-	}
-    }
-}
-
-/*----------------------------------------------------------------------------
- * ccw - determine how three points are oriented by computing their
- *	 determinant.  
- *	 Return 1 if the vertices are ccw oriented, 
- *		0 if they are cw oriented, or 
- *		-1 if the computation is ill-conditioned.
- *----------------------------------------------------------------------------
- */
-int
-Subdivider::ccw( TrimVertex *a, TrimVertex *b, TrimVertex *c )
-{
-    REAL d = det3( a, b, c );
-    if( glu_abs(d) < 0.0001 ) return -1;
-    return (d < 0.0) ? 0 : 1;
-}
diff --git a/src/glu/sgi/libnurbs/internals/coveandtiler.cc b/src/glu/sgi/libnurbs/internals/coveandtiler.cc
deleted file mode 100644
index ca5bf36b363..00000000000
--- a/src/glu/sgi/libnurbs/internals/coveandtiler.cc
+++ /dev/null
@@ -1,440 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * coveandtiler.c++
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "mystdio.h"
-#include "coveandtiler.h"
-#include "gridvertex.h"
-#include "gridtrimvertex.h"
-#include "uarray.h"
-#include "backend.h"
-
-
-const int CoveAndTiler::MAXSTRIPSIZE = 1000;
-
-CoveAndTiler::CoveAndTiler( Backend& b )
-	    : backend( b )
-{ }
-
-CoveAndTiler::~CoveAndTiler( void )
-{ }
-
-inline void
-CoveAndTiler::output( GridVertex &gv )
-{
-    backend.tmeshvert( &gv );
-}
-
-inline void
-CoveAndTiler::output( TrimVertex *tv )
-{
-    backend.tmeshvert( tv );
-}
-
-inline void
-CoveAndTiler::output( GridTrimVertex& g )
-{
-    backend.tmeshvert( &g );
-}
-
-void
-CoveAndTiler::coveAndTile( void )
-{
-    long ustart = (top.ustart >= bot.ustart) ? top.ustart : bot.ustart;
-    long uend	= (top.uend <= bot.uend)     ? top.uend   : bot.uend;
-    if( ustart <= uend ) {
-	tile( bot.vindex, ustart, uend );
-	if( top.ustart >= bot.ustart )
-	    coveUpperLeft();
-	else
-	    coveLowerLeft();
-
-	if( top.uend <= bot.uend )
-	    coveUpperRight();
-	else
-	    coveLowerRight();
-    } else {
-	TrimVertex blv, tlv, *bl, *tl;
-	GridTrimVertex bllv, tllv;
-	TrimVertex *lf = left.first();
-	TrimVertex *ll = left.last();
-	if( lf->param[0] >= ll->param[0] ) {
-	    blv.param[0] = lf->param[0];
-	    blv.param[1] = ll->param[1];
-	    blv.nuid = 0; // XXX
-	    assert( blv.param[1] == bot.vval );
-	    bl = &blv;
-	    tl = lf;
-	    tllv.set( lf );
-	    if( ll->param[0] > uarray.uarray[top.ustart-1] ) {
-		bllv.set( ll );
-		assert( ll->param[0] <= uarray.uarray[bot.ustart] );
-	    } else {
-		bllv.set( top.ustart-1, bot.vindex );
-	    }
-	    coveUpperLeftNoGrid( bl );
-	} else {
-	    tlv.param[0] = ll->param[0];
-	    tlv.param[1] = lf->param[1];
-	    tlv.nuid = 0; // XXX
-	    assert( tlv.param[1] == top.vval );
-	    tl = &tlv;
-	    bl = ll;
-	    bllv.set( ll );
-	    if( lf->param[0] > uarray.uarray[bot.ustart-1] ) {
-		assert( lf->param[0] <= uarray.uarray[bot.ustart] );
-		tllv.set( lf );
-	    } else {
-		tllv.set( bot.ustart-1, top.vindex );
-	    }
-	    coveLowerLeftNoGrid( tl );
-	}
-
-	TrimVertex brv, trv, *br, *tr;
-	GridTrimVertex brrv, trrv;
-	TrimVertex *rf = right.first();
-	TrimVertex *rl = right.last();
-
-	if( rf->param[0] <= rl->param[0] ) {
-	    brv.param[0] = rf->param[0];
-	    brv.param[1] = rl->param[1];
-	    brv.nuid = 0; // XXX
-	    assert( brv.param[1] == bot.vval );
-	    br = &brv;
-	    tr = rf;
-	    trrv.set( rf );
-	    if( rl->param[0] < uarray.uarray[top.uend+1] ) {
-		assert( rl->param[0] >= uarray.uarray[top.uend] );
-		brrv.set( rl );
-	    } else {
-		brrv.set( top.uend+1, bot.vindex );
-	    }
-	    coveUpperRightNoGrid( br );
-	} else {
-	    trv.param[0] = rl->param[0];
-	    trv.param[1] = rf->param[1];
-	    trv.nuid = 0; // XXX
-	    assert( trv.param[1] == top.vval );
-	    tr = &trv;
-	    br = rl;
-	    brrv.set( rl );
-	    if( rf->param[0] < uarray.uarray[bot.uend+1] ) {
-		assert( rf->param[0] >= uarray.uarray[bot.uend] );
-		trrv.set( rf );
-	    } else {
-		trrv.set( bot.uend+1, top.vindex );
-	    }
-	    coveLowerRightNoGrid( tr );
-	}
-
-	backend.bgntmesh( "doit" );
-	output(trrv);
-	output(tllv);
-	output( tr );
-	output( tl );
-	output( br );
-	output( bl );
-	output(brrv);
-	output(bllv);
-	backend.endtmesh();
-    }
-}
-
-void
-CoveAndTiler::tile( long vindex, long ustart, long uend )
-{
-    long numsteps = uend - ustart;
-
-    if( numsteps == 0 ) return;
-
-    if( numsteps > MAXSTRIPSIZE ) {
-	long umid = ustart + (uend - ustart) / 2;
-	tile( vindex, ustart, umid );
-	tile( vindex, umid, uend );
-    } else {
-	backend.surfmesh( ustart, vindex-1, numsteps, 1 );
-    }
-}
-
-void
-CoveAndTiler::coveUpperRight( void )
-{
-    GridVertex tgv( top.uend, top.vindex );
-    GridVertex gv( top.uend, bot.vindex );
-
-    right.first();
-    backend.bgntmesh( "coveUpperRight" );
-    output( right.next() );
-    output( tgv );
-    backend.swaptmesh();
-    output( gv );
-	coveUR();
-    backend.endtmesh();
-}
-
-void
-CoveAndTiler::coveUpperRightNoGrid( TrimVertex* br )
-{
-    backend.bgntmesh( "coveUpperRight" );
-    output( right.first() );
-    output( right.next() );
-    backend.swaptmesh();
-    output( br );
-	coveUR();
-    backend.endtmesh();
-}
-
-void
-CoveAndTiler::coveUR( )
-{
-    GridVertex gv( top.uend, bot.vindex );
-    TrimVertex *vert = right.next();
-    if( vert == NULL ) return;
-
-    assert( vert->param[0] >= uarray.uarray[gv.gparam[0]]  );
-
-    if( gv.nextu() >= bot.uend ) {
-	for( ; vert; vert = right.next() ) {
-	    output( vert );
-	    backend.swaptmesh();
-	}
-    } else while( 1 ) {
-	if( vert->param[0] < uarray.uarray[gv.gparam[0]]  ) {
-	    output( vert );
-	    backend.swaptmesh();
-	    vert = right.next();
-	    if( vert == NULL ) break;
-	} else {
-	    backend.swaptmesh();
-	    output( gv );
-	    if( gv.nextu() == bot.uend ) {
-		for( ; vert; vert = right.next() ) {
-		    output( vert );
-		    backend.swaptmesh();
-		}
-		break;
-	    }
-	}
-    }
-}
-
-void
-CoveAndTiler::coveUpperLeft( void )
-{
-    GridVertex tgv( top.ustart, top.vindex );
-    GridVertex gv( top.ustart, bot.vindex );
-
-    left.first();
-    backend.bgntmesh( "coveUpperLeft" );
-    output( tgv );
-    output( left.next() );
-    output( gv );
-    backend.swaptmesh();
-	coveUL();
-    backend.endtmesh();
-}
-
-void
-CoveAndTiler::coveUpperLeftNoGrid( TrimVertex* bl )
-{
-    backend.bgntmesh( "coveUpperLeftNoGrid" );
-    output( left.first() );
-    output( left.next() );
-    output( bl );
-    backend.swaptmesh();
-	coveUL();
-    backend.endtmesh();
-}
-
-void
-CoveAndTiler::coveUL()
-{
-    GridVertex gv( top.ustart, bot.vindex );
-    TrimVertex *vert = left.next();
-    if( vert == NULL ) return;
-    assert( vert->param[0] <= uarray.uarray[gv.gparam[0]]  );
-
-    if( gv.prevu() <= bot.ustart ) {
-	for( ; vert; vert = left.next() ) {
-	    backend.swaptmesh();
-	    output( vert );
-	}
-    } else while( 1 ) {
-	if( vert->param[0] > uarray.uarray[gv.gparam[0]]  ) {
-	    backend.swaptmesh();
-	    output( vert );
-	    vert = left.next();
-	    if( vert == NULL ) break;
-	} else {
-	    output( gv );
-	    backend.swaptmesh();
-	    if( gv.prevu() == bot.ustart ) {
-		for( ; vert; vert = left.next() ) {
-		    backend.swaptmesh();
-		    output( vert );
-		}
-		break;
-	    }
-	}
-    }
-}
-
-void
-CoveAndTiler::coveLowerLeft( void )
-{
-    GridVertex bgv( bot.ustart, bot.vindex );
-    GridVertex gv( bot.ustart, top.vindex );
-
-    left.last();
-    backend.bgntmesh( "coveLowerLeft" );
-    output( left.prev() );
-    output( bgv );
-    backend.swaptmesh();
-    output( gv );
-	coveLL();
-    backend.endtmesh();
-}
-
-void
-CoveAndTiler::coveLowerLeftNoGrid( TrimVertex* tl )
-{
-    backend.bgntmesh( "coveLowerLeft" );
-    output( left.last() );
-    output( left.prev() );
-    backend.swaptmesh();
-    output( tl );
-	coveLL( );
-    backend.endtmesh();
-}
-
-void
-CoveAndTiler::coveLL()
-{
-    GridVertex gv( bot.ustart, top.vindex );
-    TrimVertex *vert = left.prev();
-    if( vert == NULL ) return;
-    assert( vert->param[0] <= uarray.uarray[gv.gparam[0]]  );
-
-    if( gv.prevu() <= top.ustart ) {
-	for( ; vert; vert = left.prev() ) {
-	    output( vert );
-	    backend.swaptmesh();
-	}
-    } else while( 1 ) {
-	if( vert->param[0] > uarray.uarray[gv.gparam[0]] ){
-	    output( vert );
-	    backend.swaptmesh();
-	    vert = left.prev();
-	    if( vert == NULL ) break;
-	} else {
-	    backend.swaptmesh();
-	    output( gv );
-	    if( gv.prevu() == top.ustart ) {
-		for( ; vert; vert = left.prev() ) {
-		    output( vert );
-		    backend.swaptmesh();
-		}
-		break;
-	    }
-	}
-    }
-}
-
-void
-CoveAndTiler::coveLowerRight( void )
-{
-    GridVertex bgv( bot.uend, bot.vindex );
-    GridVertex gv( bot.uend, top.vindex );
-
-    right.last();
-    backend.bgntmesh( "coveLowerRight" );       
-    output( bgv );
-    output( right.prev() );
-    output( gv );
-    backend.swaptmesh();
-	coveLR();
-    backend.endtmesh( );
-}
-
-void
-CoveAndTiler::coveLowerRightNoGrid( TrimVertex* tr )
-{
-    backend.bgntmesh( "coveLowerRIght" );
-    output( right.last() );
-    output( right.prev() );
-    output( tr );
-    backend.swaptmesh();
-	coveLR();
-    backend.endtmesh();
-}
-
-void
-CoveAndTiler::coveLR( )
-{
-    GridVertex gv( bot.uend, top.vindex );
-    TrimVertex *vert = right.prev();
-    if( vert == NULL ) return;
-    assert( vert->param[0] >= uarray.uarray[gv.gparam[0]]  );
-
-    if( gv.nextu() >= top.uend ) {
-	for( ; vert; vert = right.prev() ) {
-	    backend.swaptmesh();
-	    output( vert );
-	}
-    } else while( 1 ) {
-	if( vert->param[0] < uarray.uarray[gv.gparam[0]]  ) {
-	    backend.swaptmesh();
-	    output( vert );
-	    vert = right.prev();
-	    if( vert == NULL ) break;
-	} else {
-	    output( gv );
-	    backend.swaptmesh();
-	    if( gv.nextu() == top.uend ) {
-		for( ; vert; vert = right.prev() ) {
-		    backend.swaptmesh();
-		    output( vert );
-		}
-		break;
-	    }
-	}
-    }
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/coveandtiler.h b/src/glu/sgi/libnurbs/internals/coveandtiler.h
deleted file mode 100644
index d454202e6d3..00000000000
--- a/src/glu/sgi/libnurbs/internals/coveandtiler.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * coveandtiler.h
- *
- */
-
-#ifndef __glucoveandtiler_h
-#define __glucoveandtiler_h
-
-#include "trimregion.h"
-#include "trimvertex.h"
-#include "gridvertex.h"
-
-class Backend;
-class GridTrimVertex;
-
-class CoveAndTiler : virtual public TrimRegion {
-public:
-    			CoveAndTiler( Backend& );
-    			~CoveAndTiler( void );
-    void 		coveAndTile( void );
-private:
-    Backend&		backend;
-    static const int 	MAXSTRIPSIZE;
-    void		tile( long, long, long );
-    void		coveLowerLeft( void );
-    void		coveLowerRight( void );
-    void		coveUpperLeft( void );
-    void		coveUpperRight( void );
-    void		coveUpperLeftNoGrid( TrimVertex * );
-    void		coveUpperRightNoGrid( TrimVertex * );
-    void		coveLowerLeftNoGrid( TrimVertex * );
-    void		coveLowerRightNoGrid( TrimVertex * );
-    void		coveLL( void );
-    void		coveLR( void );
-    void		coveUL( void );
-    void		coveUR( void );
-    inline void		output( GridTrimVertex& );
-    inline void		output( GridVertex& );
-    inline void		output( TrimVertex* );
-};
-
-#endif /* __glucoveandtiler_h */
diff --git a/src/glu/sgi/libnurbs/internals/curve.cc b/src/glu/sgi/libnurbs/internals/curve.cc
deleted file mode 100644
index b7c4d4a9c7c..00000000000
--- a/src/glu/sgi/libnurbs/internals/curve.cc
+++ /dev/null
@@ -1,204 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * curve.c++
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "mystdio.h"
-#include "mymath.h"
-#include "curve.h"
-#include "mapdesc.h"
-#include "types.h"
-#include "quilt.h"
-#include "nurbsconsts.h"
-
-/*--------------------------------------------------------------------------
- * Curve::Curve - copy curve from quilt and transform control points
- *--------------------------------------------------------------------------
- */
-
-Curve::Curve( Quilt_ptr geo, REAL pta, REAL ptb, Curve *c )
-{
-    mapdesc = geo->mapdesc;
-    next = c;
-    needsSampling = mapdesc->isRangeSampling() ? 1 : 0;
-    cullval = mapdesc->isCulling() ? CULL_ACCEPT : CULL_TRIVIAL_ACCEPT;
-    order = geo->qspec[0].order;
-    stride = MAXCOORDS;
-    for( int i = 0; i < MAXORDER * MAXCOORDS; i++ ) {
-        cpts[i] = 0;
-        spts[i] = 0;
-    }
-    stepsize = 0;
-    minstepsize = 0;
-
-    REAL *ps  = geo->cpts; 
-    Quiltspec_ptr qs = geo->qspec;
-    ps += qs->offset;
-    ps += qs->index * qs->order * qs->stride;
-
-    if( needsSampling )
-	mapdesc->xformSampling( ps, qs->order, qs->stride, spts, stride );
-	
-    if( cullval == CULL_ACCEPT )
-	mapdesc->xformCulling(  ps, qs->order, qs->stride, cpts, stride );
-
-    /* set untrimmed curve range */
-    range[0] = qs->breakpoints[qs->index];
-    range[1] = qs->breakpoints[qs->index+1];
-    range[2] = range[1] - range[0];
-
-    if( range[0] != pta ) {
-	Curve lower( *this, pta, 0 );
-	lower.next = next;
-	*this = lower;
-    }
-    if( range[1] != ptb ) {
-	Curve lower( *this, ptb, 0 );
-    }
-}
-
-/*--------------------------------------------------------------------------
- * Curve::Curve - subdivide a curve along an isoparametric line
- *--------------------------------------------------------------------------
- */
-
-Curve::Curve( Curve& upper, REAL value, Curve *c )
-{
-    Curve &lower = *this;
-
-    lower.next = c;
-    lower.mapdesc = upper.mapdesc;
-    lower.needsSampling = upper.needsSampling;
-    lower.order = upper.order;
-    lower.stride = upper.stride;
-    lower.cullval = upper.cullval;
-
-    REAL d = (value - upper.range[0]) / upper.range[2];
-
-    if( needsSampling )
-        mapdesc->subdivide( upper.spts, lower.spts, d, upper.stride, upper.order );
-
-    if( cullval == CULL_ACCEPT ) 
-        mapdesc->subdivide( upper.cpts, lower.cpts, d, upper.stride, upper.order );
-
-    lower.range[0] = upper.range[0];
-    lower.range[1] = value;
-    lower.range[2] = value - upper.range[0];
-    upper.range[0] = value;
-    upper.range[2] = upper.range[1] - value;
-}
-
-
-/*--------------------------------------------------------------------------
- * Curve::clamp - clamp the sampling rate to a given maximum
- *--------------------------------------------------------------------------
- */
-
-void
-Curve::clamp( void )
-{
-    if( stepsize < minstepsize )
-        stepsize = mapdesc->clampfactor * minstepsize;
-}
-
-void
-Curve::setstepsize( REAL max )
-{
-    stepsize = ( max >= 1.0 ) ? (range[2] / max) : range[2];
-    minstepsize = stepsize;
-}
-
-void
-Curve::getstepsize( void )
-{
-    minstepsize= 0;
-
-    if( mapdesc->isConstantSampling() ) {
-	// fixed number of samples per patch in each direction
-	// maxrate is number of s samples per patch
-        setstepsize( mapdesc->maxrate );
-    } else if( mapdesc->isDomainSampling() ) {
-	// maxrate is number of s samples per unit s length of domain
-        setstepsize( mapdesc->maxrate * range[2] );
-    } else {
-	// upper bound on path length between sample points
-
-	assert( order <= MAXORDER );
-    
-	/* points have been transformed, therefore they are homogeneous */
-        REAL tmp[MAXORDER][MAXCOORDS];
-	const int tstride = sizeof(tmp[0]) / sizeof(REAL);
-	int val = mapdesc->project( spts, stride, &tmp[0][0], tstride,  order ); 
-
-        if( val == 0 ) {
-	    // control points cross infinity, therefore derivatives are undefined
-            setstepsize( mapdesc->maxrate );
-        } else {
-            REAL t = mapdesc->getProperty( N_PIXEL_TOLERANCE );
-	    if( mapdesc->isParametricDistanceSampling() ) {
-		REAL d = mapdesc->calcPartialVelocity( &tmp[0][0], tstride, order, 2, range[2] );
-		stepsize = (d > 0.0) ? sqrtf( 8.0 * t / d ) : range[2];
-		minstepsize = ( mapdesc->maxrate > 0.0 ) ? (range[2] / mapdesc->maxrate) : 0.0;
-	    } else if( mapdesc->isPathLengthSampling() ) {
-		// t is upper bound on path (arc) length
-		REAL d = mapdesc->calcPartialVelocity( &tmp[0][0], tstride, order, 1, range[2] );
-		stepsize = ( d > 0.0 ) ? (t / d) : range[2];
-		minstepsize = ( mapdesc->maxrate > 0.0 ) ? (range[2] / mapdesc->maxrate) : 0.0;
-	    } else {
-		// control points cross infinity, therefore partials are undefined
-		setstepsize( mapdesc->maxrate );
-	    }
-	}
-    }
-}
-
-int
-Curve::needsSamplingSubdivision( void )
-{
-    return ( stepsize < minstepsize )  ? 1 : 0;
-}
-
-int
-Curve::cullCheck( void )
-{
-    if( cullval == CULL_ACCEPT ) 
-	cullval = mapdesc->cullCheck( cpts, order, stride );
-    return cullval;
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/curve.h b/src/glu/sgi/libnurbs/internals/curve.h
deleted file mode 100644
index 0da81c72168..00000000000
--- a/src/glu/sgi/libnurbs/internals/curve.h
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * curve.h
- *
- */
-
-#ifndef __glucurve_h_
-#define __glucurve_h_
-
-#include "types.h"
-#include "defines.h"
-
-class Mapdesc;
-class Quilt;
-
-
-class Curve {
-public:
-friend class Curvelist;
-    			Curve( Quilt *, REAL, REAL, Curve * );
-    			Curve( Curve&, REAL, Curve * );
-    Curve *		next;
-private:
-    Mapdesc *		mapdesc;
-    int			stride;
-    int		        order;
-    int			cullval;
-    int			needsSampling;
-    REAL		cpts[MAXORDER*MAXCOORDS];
-    REAL		spts[MAXORDER*MAXCOORDS];
-    REAL		stepsize;
-    REAL		minstepsize;
-    REAL		range[3];
-
-    void		clamp( void );
-    void		setstepsize( REAL );
-    void		getstepsize( void );
-    int			cullCheck( void );
-    int			needsSamplingSubdivision( void );
-};
-#endif /* __glucurve_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/curvelist.cc b/src/glu/sgi/libnurbs/internals/curvelist.cc
deleted file mode 100644
index 8f2ee4678d2..00000000000
--- a/src/glu/sgi/libnurbs/internals/curvelist.cc
+++ /dev/null
@@ -1,112 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * curvelist.c++
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "mystdio.h"
-#include "quilt.h"
-#include "curvelist.h"
-#include "curve.h"
-#include "types.h"
-
-Curvelist::Curvelist( Quilt *quilts, REAL pta, REAL ptb )
-{
-    curve = 0;
-    for( Quilt *q = quilts; q; q = q->next ) 
-	curve = new Curve( q, pta, ptb, curve );
-    range[0] = pta;
-    range[1] = ptb;
-    range[2] = ptb - pta;
-    needsSubdivision = 0;
-    stepsize = 0;
-}
-
-Curvelist::Curvelist( Curvelist &upper, REAL value )
-{
-    curve = 0;
-    for( Curve *c = upper.curve; c; c = c->next )
-	curve = new Curve( *c, value, curve );
-
-    range[0] = upper.range[0];
-    range[1] = value;
-    range[2] = value - upper.range[0];
-    upper.range[0] = value;
-    upper.range[2] = upper.range[1] - value;
-    needsSubdivision = 0;
-    stepsize = 0;
-}
-
-Curvelist::~Curvelist()
-{
-    while( curve ) {
-	Curve *c = curve;
-	curve = curve->next;
-	delete c;
-    }
-}
-
-int
-Curvelist::cullCheck( void )
-{
-    for( Curve *c = curve; c; c = c->next )
-	if( c->cullCheck() == CULL_TRIVIAL_REJECT )
-	    return CULL_TRIVIAL_REJECT;
-    return CULL_ACCEPT;
-}
-
-void
-Curvelist::getstepsize( void )
-{
-    stepsize = range[2];
-    Curve *c;
-    for( c = curve; c; c = c->next ) {
-	c->getstepsize();
-	c->clamp();
-	stepsize =  ((c->stepsize < stepsize) ? c->stepsize : stepsize);
-	if( c->needsSamplingSubdivision() ) break;
-    }
-    needsSubdivision = ( c ) ? 1 : 0;
-}
-
-int
-Curvelist::needsSamplingSubdivision( void )
-{
-    return needsSubdivision;
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/curvelist.h b/src/glu/sgi/libnurbs/internals/curvelist.h
deleted file mode 100644
index 733a5115d01..00000000000
--- a/src/glu/sgi/libnurbs/internals/curvelist.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * curvelist.h
- *
- */
-
-#ifndef __glucurvelist_h_
-#define __glucurvelist_h_
-
-#include "types.h"
-#include "defines.h"
-
-class Mapdesc;
-class Quilt;
-class Curve;
-
-class Curvelist 
-{
-friend class Subdivider;
-public:
-			Curvelist( Quilt *, REAL, REAL );
-    			Curvelist( Curvelist &, REAL );
-			~Curvelist( void );
-    int			cullCheck( void );
-    void		getstepsize( void );
-    int			needsSamplingSubdivision();
-private:
-    Curve		*curve;
-    float		range[3];
-    int			needsSubdivision;
-    float		stepsize;
-};
-#endif /* __glucurvelist_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/curvesub.cc b/src/glu/sgi/libnurbs/internals/curvesub.cc
deleted file mode 100644
index 91f2ca8ce8e..00000000000
--- a/src/glu/sgi/libnurbs/internals/curvesub.cc
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * curvesub.c++
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "mystdio.h"
-#include "subdivider.h"
-#include "renderhints.h"
-#include "backend.h"
-#include "quilt.h"
-#include "curvelist.h"
-#include "nurbsconsts.h"
-
-/*--------------------------------------------------------------------------
- * drawCurves - main curve rendering entry point
- *--------------------------------------------------------------------------
- */
-
-void
-Subdivider::drawCurves( void )
-{
-    REAL 	from[1], to[1];
-    Flist	bpts;
-    qlist->getRange( from, to, bpts );
-
-    renderhints.init( );
-
-    backend.bgncurv();
-    for( int i=bpts.start; i<bpts.end-1; i++ ) {
-        REAL pta, ptb;
-	pta = bpts.pts[i];
-	ptb = bpts.pts[i+1];
-
-	qlist->downloadAll( &pta, &ptb, backend );
-
-	Curvelist curvelist( qlist, pta, ptb );
-	samplingSplit( curvelist, renderhints.maxsubdivisions );
-    }
-    backend.endcurv();
-}
-
-
-/*--------------------------------------------------------------------------
- * samplingSplit - recursively subdivide patch, cull check each subpatch  
- *--------------------------------------------------------------------------
- */
-
-void
-Subdivider::samplingSplit( Curvelist& curvelist, int subdivisions )
-{
-    if( curvelist.cullCheck() == CULL_TRIVIAL_REJECT )  return;
-
-    curvelist.getstepsize();
-
-    if( curvelist.needsSamplingSubdivision() && (subdivisions > 0) ) {
-	REAL mid = ( curvelist.range[0] + curvelist.range[1] ) * 0.5;
-	Curvelist lowerlist( curvelist, mid );
-	samplingSplit( lowerlist, subdivisions-1 ); // lower
-	samplingSplit( curvelist, subdivisions-1 ); // upper
-    } else {
-	long nu = 1 + ((long) (curvelist.range[2] / curvelist.stepsize));
-	backend.curvgrid( curvelist.range[0], curvelist.range[1], nu );
-	backend.curvmesh( 0, nu );
-    }
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/dataTransform.cc b/src/glu/sgi/libnurbs/internals/dataTransform.cc
deleted file mode 100644
index 55c0fbb159a..00000000000
--- a/src/glu/sgi/libnurbs/internals/dataTransform.cc
+++ /dev/null
@@ -1,209 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-** 
-** http://oss.sgi.com/projects/FreeB
-** 
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-** 
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-** 
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-**
-*/
-/*
-*/
-
-#include <stdlib.h>
-#include <stdio.h>
-#include "glimports.h"
-#include "myassert.h"
-#include "nurbsconsts.h"
-#include "trimvertex.h"
-#include "dataTransform.h"
-
-extern directedLine* arcLoopToDLineLoop(Arc_ptr loop);
-
-#if 0 // UNUSED
-static directedLine* copy_loop(Arc_ptr loop, Real2* vertArray, int& index, directedLine dline_buf[], sampledLine sline_buf[], int& index_dline)
-{
-  directedLine *ret;
-  int old_index = index;
-  int i = index;
-  int j;
-  for(j=0; j<loop->pwlArc->npts-1; j++, i++)
-    {
-      vertArray[i][0] = loop->pwlArc->pts[j].param[0];
-      vertArray[i][1] = loop->pwlArc->pts[j].param[1];
-    }  
-  loop->clearmark();
-
-  for(Arc_ptr jarc = loop->next; jarc != loop; jarc=jarc->next)
-    {
-      for(j=0; j<jarc->pwlArc->npts-1; j++, i++)
-	{
-	  vertArray[i][0] = jarc->pwlArc->pts[j].param[0];
-	  vertArray[i][1] = jarc->pwlArc->pts[j].param[1];
-	}
-      jarc->clearmark();
-    }
-  //copy the first vertex again
-  vertArray[i][0] = loop->pwlArc->pts[0].param[0];
-  vertArray[i][1] = loop->pwlArc->pts[0].param[1];  
-  i++;
-  index=i;
-
-  directedLine* dline;
-  sampledLine* sline;
-  sline = &sline_buf[index_dline];
-  dline = &dline_buf[index_dline];
-  sline->init(2, &vertArray[old_index]);
-  dline->init(INCREASING, sline);
-  ret = dline;
-  index_dline++;
-
-  for(i=old_index+1; i<= index-2; i++)
-    {
-      sline = &sline_buf[index_dline];
-      dline = &dline_buf[index_dline];
-      sline->init(2, &vertArray[i]);
-      dline->init(INCREASING, sline);
-      ret->insert(dline);
-      index_dline++;
-    }
-  return ret;
-}
-#endif
-
-#if 0 // UNUSED
-static int num_edges(Bin& bin)
-{
-  int sum=0;
-  for(Arc_ptr jarc = bin.firstarc(); jarc; jarc=bin.nextarc())
-    sum += jarc->pwlArc->npts-1;
-  return sum;
-}
-#endif
-
-/*
-directedLine* bin_to_DLineLoops(Bin& bin)
-{
-  directedLine *ret=NULL;
-  directedLine *temp;
-
-  int numedges = num_edges(bin);
-  directedLine* dline_buf = new directedLine[numedges]; //not work for N32?
-  sampledLine* sline_buf=new sampledLine[numedges];
-
-  Real2* vertArray = new Real2[numedges*2];
-  int index = 0;
-  int index_dline = 0;
-  bin.markall();
-
-  for(Arc_ptr jarc = bin.firstarc(); jarc; jarc=bin.nextarc())
-    {
-      if(jarc->ismarked())
-	{
-	  assert(jarc->check() != 0);
-	  Arc_ptr jarchead = jarc;
-	  do {
-	    jarc->clearmark();
-	    jarc = jarc->next;
-	  } while(jarc != jarchead);
-	  temp=copy_loop(jarchead, vertArray, index, dline_buf, sline_buf, index_dline);
-	  ret = temp->insertPolygon(ret);
-	}
-    }
-
-  return ret;
-}
-*/
-
-
-directedLine* bin_to_DLineLoops(Bin& bin)
-{
-  directedLine *ret=NULL;
-  directedLine *temp;
-  bin.markall();
-  for(Arc_ptr jarc=bin.firstarc(); jarc; jarc=bin.nextarc()){
-    if(jarc->ismarked()) {
-      assert(jarc->check() != 0);
-      Arc_ptr jarchead = jarc;
-      do {
-	jarc->clearmark();
-	jarc = jarc->next;
-      } while(jarc != jarchead);
-      temp =  arcLoopToDLineLoop(jarc);
-      ret = temp->insertPolygon(ret);
-    }
-  }
-  return ret;
-}
-
-directedLine* o_pwlcurve_to_DLines(directedLine* original, O_pwlcurve* pwl)
-{
-  directedLine* ret = original;
-  for(Int i=0; i<pwl->npts-1; i++)
-    {
-      sampledLine* sline = new sampledLine(2);
-      sline->setPoint(0, pwl->pts[i].param);
-      sline->setPoint(1, pwl->pts[i+1].param);
-      directedLine* dline = new directedLine(INCREASING, sline);
-      if(ret == NULL)
-	ret = dline;
-      else
-	ret->insert(dline);
-    }
-  return ret;      
-}
-
-directedLine* o_curve_to_DLineLoop(O_curve* cur)
-{
-  directedLine *ret;
-  if(cur == NULL)
-    return NULL;
-  assert(cur->curvetype == ct_pwlcurve);
-  ret = o_pwlcurve_to_DLines(NULL, cur->curve.o_pwlcurve);
-  for(O_curve* temp = cur->next; temp != NULL; temp = temp->next)
-    {
-      assert(temp->curvetype == ct_pwlcurve);
-      ret = o_pwlcurve_to_DLines(ret, temp->curve.o_pwlcurve);
-    }
-  return ret;
-}
-
-directedLine* o_trim_to_DLineLoops(O_trim* trim)
-{
-  O_trim* temp;
-  directedLine *ret;
-  if(trim == NULL)
-    return NULL;
-  ret = o_curve_to_DLineLoop(trim->o_curve);
-
-  for(temp=trim->next; temp != NULL; temp = temp->next)
-    {
-      ret = ret->insertPolygon(o_curve_to_DLineLoop(temp->o_curve));
-    }
-  return ret;
-}
diff --git a/src/glu/sgi/libnurbs/internals/dataTransform.h b/src/glu/sgi/libnurbs/internals/dataTransform.h
deleted file mode 100644
index 7898df754d7..00000000000
--- a/src/glu/sgi/libnurbs/internals/dataTransform.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-/*
-*/
-
-#ifndef _DATA_TRANSFORM_H
-#define _DATA_TRANSFORM_H
-
-#include "reader.h"
-#include "directedLine.h"
-#include "bin.h"
-directedLine* bin_to_DLineLoops(Bin& bin);
-
-/*transform the pwlcurve into a number of directedline lines
- *insert these directedlines into orignal which is supposed to be
- *the part of the trimming loop obtained so far.
- *return the updated trimkming loop.
- */
-directedLine* o_pwlcurve_to_DLines(directedLine* original, O_pwlcurve* pwl);
-
-/*transform a trim loop (curve) into a directedLine loop
- */
-directedLine* o_curve_to_DLineLoop(O_curve* curve);
-
-/*transform a list of trim loops (trim) into
- *a list of polygons represented as directedLine*.
- */
-directedLine* o_trim_to_DLineLoops(O_trim* trim);
-
-
-#endif
-
diff --git a/src/glu/sgi/libnurbs/internals/defines.h b/src/glu/sgi/libnurbs/internals/defines.h
deleted file mode 100644
index 32950d613ba..00000000000
--- a/src/glu/sgi/libnurbs/internals/defines.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * defines.h
- *
- */
-
-#ifndef __gludefines_h_
-#define __gludefines_h_
-
-/* culling constants */
-#define CULL_TRIVIAL_REJECT	0
-#define CULL_TRIVIAL_ACCEPT	1
-#define CULL_ACCEPT		2
-
-/* maximum order of a B-Spline */ 
-#define	MAXORDER 	24
-
-/* maximum dimension of any B-spline range space  */
-#define MAXCOORDS	5
-
-#endif /* __gludefines_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/displaylist.cc b/src/glu/sgi/libnurbs/internals/displaylist.cc
deleted file mode 100644
index 48593c6371d..00000000000
--- a/src/glu/sgi/libnurbs/internals/displaylist.cc
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * displaylist.c++
- *
- */
-
-#include "glimports.h"
-#include "mystdio.h"
-#include "nurbstess.h"
-#include "displaylist.h"
-
-
-DisplayList::DisplayList( NurbsTessellator  *_nt ) :
-	dlnodePool( sizeof( Dlnode ), 1, "dlnodepool" )
-{
-    lastNode = &nodes;
-    nt = _nt;
-}
-
-DisplayList::~DisplayList( void ) 
-{
-    for( Dlnode *nextNode; nodes; nodes = nextNode ) {
-	nextNode = nodes->next;
-	if( nodes->cleanup != 0 ) (nt->*nodes->cleanup)( nodes->arg );
-	//nodes->deleteMe(dlnodePool);
-    }
-}
-
-void 
-DisplayList::play( void )
-{
-    for( Dlnode *node = nodes; node; node = node->next ) 
-	if( node->work != 0 ) (nt->*node->work)( node->arg );
-}
-
-void 
-DisplayList::endList( void )
-{
-    *lastNode = 0;
-}
-
-void 
-DisplayList::append( PFVS work, void *arg, PFVS cleanup )
-{
-    Dlnode *node = new(dlnodePool) Dlnode( work, arg, cleanup );
-    *lastNode = node;
-    lastNode = &(node->next);
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/displaylist.h b/src/glu/sgi/libnurbs/internals/displaylist.h
deleted file mode 100644
index d009a42513e..00000000000
--- a/src/glu/sgi/libnurbs/internals/displaylist.h
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * displaylist.h
- *
- */
-
-#ifndef __gludisplaylist_h_
-#define __gludisplaylist_h_
-
-#include "glimports.h"
-#include "mysetjmp.h"
-#include "mystdio.h"
-#include "bufpool.h"
-
-class NurbsTessellator;
-
-typedef void (NurbsTessellator::*PFVS)( void * );
-
-struct Dlnode : public PooledObj {
-    			Dlnode( PFVS, void *, PFVS );
-    PFVS		work;
-    void *		arg;
-    PFVS		cleanup;
-    Dlnode *		next;
-};
-
-inline
-Dlnode::Dlnode( PFVS _work, void *_arg, PFVS _cleanup ) 
-{
-    work = _work;
-    arg = _arg;
-    cleanup = _cleanup;
-    next = 0;
-}
-
-class DisplayList {
-public:
-			DisplayList( NurbsTessellator * );
-			~DisplayList( void );
-    void		play( void );
-    void		append( PFVS work, void *arg, PFVS cleanup );
-    void		endList( void );
-private:
-    Dlnode 		*nodes;
-    Pool		dlnodePool;
-    Dlnode		**lastNode;
-    NurbsTessellator 	*nt;
-};
-
-#endif /* __gludisplaylist_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/displaymode.h b/src/glu/sgi/libnurbs/internals/displaymode.h
deleted file mode 100644
index 53968b2f1c9..00000000000
--- a/src/glu/sgi/libnurbs/internals/displaymode.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-/*
-*/
-
-#ifndef __gludisplaymode_h_
-#define __gludisplaymode_h_
-
-#define N_MESHFILL	0
-#define N_MESHLINE	1
-#define N_MESHPOINT	2
-
-#endif /* __gludisplaymode_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/flist.cc b/src/glu/sgi/libnurbs/internals/flist.cc
deleted file mode 100644
index d3162b9f5f5..00000000000
--- a/src/glu/sgi/libnurbs/internals/flist.cc
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * flist.c++
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "mystdio.h"
-#include "flist.h"
-
-/*----------------------------------------------------------------------------
- * Flist::Flist - initialize a REAL number array
- *----------------------------------------------------------------------------
- */
-Flist::Flist( void )
-{
-    npts = 0;
-    pts = 0;
-    start = end = 0;
-}
-
-/*----------------------------------------------------------------------------
- * Flist::~Flist - free a REAL number array
- *----------------------------------------------------------------------------
- */
-Flist::~Flist( void )
-{
-    if( npts ) delete[] pts;
-}
-
-void
-Flist::add( REAL x )
-{
-    pts[end++] = x;
-    assert( end <= npts );
-}
-
-/*----------------------------------------------------------------------------
- * Flist::filter - remove duplicate numbers from array
- *----------------------------------------------------------------------------
- */
-void Flist::filter( void )
-{
-    sorter.qsort( pts, end );
-    start = 0;
-
-    int j = 0;
-    for( int i = 1; i < end; i++ ) { 
-	if( pts[i] == pts[i-j-1] )
-	    j++;
-	pts[i-j] = pts[i];
-    }
-    end -= j;
-}
-
-/*----------------------------------------------------------------------------
- * Flist::grow - ensure that array is large enough
- *----------------------------------------------------------------------------
- */
-void Flist::grow( int maxpts )
-{
-    if( npts < maxpts ) {
-	if( npts ) delete[] pts;
-	npts = 2 * maxpts; 
-	pts = new REAL[npts];
-	assert( pts != 0 );
-    }
-    start = end = 0;
-}
-
-/*----------------------------------------------------------------------------
- * Flist::taper - ignore head and tail of array
- *----------------------------------------------------------------------------
- */
-void Flist::taper( REAL from, REAL to )
-{
-    while( pts[start] != from )
-	start++;
-
-    while( pts[end-1] != to )
-	end--;
-}
-
-
diff --git a/src/glu/sgi/libnurbs/internals/flist.h b/src/glu/sgi/libnurbs/internals/flist.h
deleted file mode 100644
index 014273ebe51..00000000000
--- a/src/glu/sgi/libnurbs/internals/flist.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * flist.h
- *
- */
-
-#ifndef __gluflist_h_
-#define __gluflist_h_
-
-#include "types.h"
-#include "flistsorter.h"
-
-class Flist {
-public:
-    REAL *		pts;		/* head of array */
-    int			npts;		/* number of points in array */
-    int			start;		/* first important point index */
-    int			end;		/* last important point index */
-
-    			Flist( void );
-    			~Flist( void );
-    void		add( REAL x );
-    void		filter( void );
-    void		grow( int);
-    void		taper( REAL , REAL );
-protected:
-    FlistSorter 	sorter;
-};
-
-#endif /* __gluflist_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/flistsorter.cc b/src/glu/sgi/libnurbs/internals/flistsorter.cc
deleted file mode 100644
index d49bdea3e00..00000000000
--- a/src/glu/sgi/libnurbs/internals/flistsorter.cc
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * flistsorter.c++
- *
- */
-
-#include "glimports.h"
-#include "flistsorter.h"
-
-FlistSorter::FlistSorter( void ) : Sorter( sizeof( REAL ) )
-{
-}
-
-void
-FlistSorter::qsort( REAL *p, int n )
-{
-    Sorter::qsort( (char *)p, n );
-}
-
-int
-FlistSorter::qscmp( char *i, char *j )
-{
-    REAL f0 = *(REAL *)i;
-    REAL f1 = *(REAL *)j;
-    return (f0 < f1) ? -1 : 1;
-}
-
-void
-FlistSorter::qsexc( char *i, char *j )
-{
-    REAL *f0 = (REAL *)i;
-    REAL *f1 = (REAL *)j;
-    REAL tmp = *f0;
-    *f0 = *f1;
-    *f1 = tmp;
-}
-
-void
-FlistSorter::qstexc( char *i, char *j, char *k )
-{
-    REAL *f0 = (REAL *)i;
-    REAL *f1 = (REAL *)j;
-    REAL *f2 = (REAL *)k;
-    REAL tmp = *f0;
-    *f0 = *f2;
-    *f2 = *f1;
-    *f1 = tmp;
-}
diff --git a/src/glu/sgi/libnurbs/internals/flistsorter.h b/src/glu/sgi/libnurbs/internals/flistsorter.h
deleted file mode 100644
index 65e6a572e30..00000000000
--- a/src/glu/sgi/libnurbs/internals/flistsorter.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * flistsorter.h
- *
- */
-
-#ifndef __gluflistsorter_h_
-#define __gluflistsorter_h_
-
-#include "sorter.h"
-#include "types.h"
-
-class FlistSorter : public Sorter {
-public:
-			FlistSorter(void);
-    virtual             ~FlistSorter() { /* silence warning*/ }
-    void		qsort( REAL *a, int n );
-
-protected:	
-    virtual int		qscmp( char *, char * );
-    virtual void	qsexc( char *i, char *j );	// i<-j, j<-i 
-    virtual void	qstexc( char *i, char *j, char *k ); // i<-k, k<-j, j<-i 
-};
-#endif /* __gluflistsorter_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/gridline.h b/src/glu/sgi/libnurbs/internals/gridline.h
deleted file mode 100644
index 1a92e3b13b5..00000000000
--- a/src/glu/sgi/libnurbs/internals/gridline.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * gridline.h
- *
- */
-
-#ifndef __glugridline_h_
-#define __glugridline_h_
-
-struct Gridline {
-    long 		v;
-    REAL		vval;
-    long		vindex;
-    long 		ustart;
-    long 		uend;
- };
-#endif /* __glugridline_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/gridtrimvertex.h b/src/glu/sgi/libnurbs/internals/gridtrimvertex.h
deleted file mode 100644
index 707f649d20b..00000000000
--- a/src/glu/sgi/libnurbs/internals/gridtrimvertex.h
+++ /dev/null
@@ -1,89 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * gridtrimvertex.h
- *
- */
-
-#ifndef __glugridtrimvertex_h_
-#define __glugridtrimvertex_h_
-
-#include "mystdlib.h"
-#include "bufpool.h"
-#include "trimvertex.h"
-#include "gridvertex.h"
-
-class GridTrimVertex : public PooledObj
-{
-private:
-    TrimVertex	dummyt;
-    GridVertex	dummyg;
-public:
-			GridTrimVertex() { g = 0; t = 0; }
-    TrimVertex	*t;
-    GridVertex	*g;
-   
-    inline void		set( long, long );
-    inline void		set( REAL, REAL );
-    inline void		set( TrimVertex * );
-    inline void		clear( void ) { t = 0; g = 0; };
-    inline int		isGridVert() { return g ? 1 : 0 ; }
-    inline int		isTrimVert() { return t ? 1 : 0 ; }
-    inline void		output();
-};
-
-inline void
-GridTrimVertex::set( long x, long y )
-{
-    g = &dummyg;
-    dummyg.gparam[0] = x;
-    dummyg.gparam[1] = y;
-}
-
-inline void
-GridTrimVertex::set( REAL x, REAL y )
-{
-    g = 0;
-    t = &dummyt;
-    dummyt.param[0] = x;
-    dummyt.param[1] = y;
-    dummyt.nuid = 0;
-}
-
-inline void
-GridTrimVertex::set( TrimVertex *v )
-{
-    g = 0;
-    t = v;
-}
-
-typedef GridTrimVertex *GridTrimVertex_p;
-#endif /* __glugridtrimvertex_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/gridvertex.h b/src/glu/sgi/libnurbs/internals/gridvertex.h
deleted file mode 100644
index 2e27436ef81..00000000000
--- a/src/glu/sgi/libnurbs/internals/gridvertex.h
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * gridvertex.h
- *
- */
-
-#ifndef __glugridvertex_h_
-#define __glugridvertex_h_
-
-struct GridVertex {
-    long 		gparam[2];
-			GridVertex( void ) { gparam[0] = 0, gparam[1] = 0; }
-			GridVertex( long u, long v ) { gparam[0] = u, gparam[1] = v; }
-    void		set( long u, long v ) { gparam[0] = u, gparam[1] = v; }
-    long		nextu() { return gparam[0]++; }
-    long		prevu() { return gparam[0]--; }
-};
-
-#endif /* __glugridvertex_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/hull.cc b/src/glu/sgi/libnurbs/internals/hull.cc
deleted file mode 100644
index 389ba66fb84..00000000000
--- a/src/glu/sgi/libnurbs/internals/hull.cc
+++ /dev/null
@@ -1,165 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * hull.c++
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "mystdio.h"
-#include "hull.h"
-#include "gridvertex.h"
-#include "gridtrimvertex.h"
-#include "gridline.h"
-#include "trimline.h"
-#include "uarray.h"
-#include "trimregion.h"
-
-Hull::Hull( void )
-{}
-
-Hull::~Hull( void )
-{}
-
-/*----------------------------------------------------------------------
- * Hull:init - this routine does the initialization needed before any
- *	 	calls to nextupper or nextlower can be made.
- *----------------------------------------------------------------------
- */
-void
-Hull::init( void )
-{
-    TrimVertex *lfirst = left.first();
-    TrimVertex *llast = left.last();
-    if( lfirst->param[0] <= llast->param[0] ) {
-	fakeleft.init( left.first() );
-	upper.left = &fakeleft;
-	lower.left = &left;
-    } else {
-	fakeleft.init( left.last() );
-	lower.left = &fakeleft;
- 	upper.left = &left;
-    }
-    upper.left->last();
-    lower.left->first();
-
-    if( top.ustart <= top.uend ) {
-	upper.line = &top;
-	upper.index = top.ustart;
-    } else
-	upper.line = 0;
-
-    if( bot.ustart <= bot.uend ) {
-	lower.line = &bot;
-	lower.index = bot.ustart;
-    } else
-	lower.line = 0;
-
-    TrimVertex *rfirst = right.first();
-    TrimVertex *rlast = right.last();
-    if( rfirst->param[0] <= rlast->param[0] ) {
-	fakeright.init( right.last() );
-	lower.right = &fakeright;
-	upper.right = &right;
-    } else {
-	fakeright.init( right.first() );
-	upper.right = &fakeright;
-	lower.right = &right;
-    }
-    upper.right->first();
-    lower.right->last();
-}
-
-/*----------------------------------------------------------------------
- * nextupper - find next vertex on upper hull of trim region.
- *		 - if vertex is on trim curve, set vtop point to 
- *		   that vertex.  if vertex is on grid, set vtop to
- *		   point to temporary area and stuff coordinants into
- *		   temporary vertex.  Also, place grid coords in temporary
- *		   grid vertex.
- *----------------------------------------------------------------------
- */
-GridTrimVertex *
-Hull::nextupper( GridTrimVertex *gv )
-{
-    if( upper.left ) {
-	gv->set( upper.left->prev() );
-	if( gv->isTrimVert() ) return gv;
-	upper.left = 0;
-    } 
-
-    if( upper.line ) {
-	assert( upper.index <= upper.line->uend );
-	gv->set( uarray.uarray[upper.index], upper.line->vval );
-	gv->set( upper.index, upper.line->vindex );
-	if( upper.index++ == upper.line->uend ) upper.line = 0;
-	return gv; 
-    } 
-
-    if( upper.right ) {
-	gv->set( upper.right->next() );
-	if( gv->isTrimVert() ) return gv;
-	upper.right = 0;
-    } 
-
-    return 0; 
-}
-
-GridTrimVertex *
-Hull::nextlower( register GridTrimVertex *gv )
-{
-    if( lower.left ) {
-	gv->set( lower.left->next() );
-	if( gv->isTrimVert() ) return gv;
-	lower.left = 0;
-    } 
-
-    if( lower.line ) {
-	gv->set( uarray.uarray[lower.index], lower.line->vval );
-	gv->set( lower.index, lower.line->vindex );
-	if( lower.index++ == lower.line->uend ) lower.line = 0;
-	return gv;
-    } 
-
-    if( lower.right ) {
-	gv->set( lower.right->prev() );
-	if( gv->isTrimVert() ) return gv;
-	lower.right = 0;
-    } 
-
-    return 0;
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/hull.h b/src/glu/sgi/libnurbs/internals/hull.h
deleted file mode 100644
index dfe865267f7..00000000000
--- a/src/glu/sgi/libnurbs/internals/hull.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * hull.h
- *
- */
-
-#ifndef __gluhull_h_
-#define __gluhull_h_
-
-#include "trimline.h"
-#include "trimregion.h"
-#include "trimvertex.h"
-#include "gridtrimvertex.h"
-
-struct Gridline;
-class Uarray;
-
-class Hull : virtual public TrimRegion {
-public:
-    			Hull( void );
-    			~Hull( void );
-    void		init( void );
-    GridTrimVertex *	nextlower( GridTrimVertex * );
-    GridTrimVertex *	nextupper( GridTrimVertex * );
-private:
-    struct Side {
-	Trimline 	*left;
-	Gridline     	*line;
-	Trimline 	*right;
-	long 		index;
-    };
-	
-    Side 		lower;
-    Side		upper;
-    Trimline 		fakeleft;
-    Trimline		fakeright;
-};
-
-
-#endif /* __gluhull_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/intersect.cc b/src/glu/sgi/libnurbs/internals/intersect.cc
deleted file mode 100644
index b39ea2121ef..00000000000
--- a/src/glu/sgi/libnurbs/internals/intersect.cc
+++ /dev/null
@@ -1,665 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * intersect.c++
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "mystdio.h"
-#include "subdivider.h"
-#include "arc.h"
-#include "bin.h"
-#include "backend.h"
-#include "trimvertpool.h"
-
-/*#define NOTDEF*/
-
-enum i_result { INTERSECT_VERTEX, INTERSECT_EDGE };
-
-/* local functions */
-#ifndef NDEBUG  // for asserts only
-static int		arc_classify( Arc_ptr, int, REAL );
-#endif
-static enum i_result	pwlarc_intersect( PwlArc *, int, REAL, int, int[3] );
-
-
-void
-Subdivider::partition( Bin & bin, Bin & left, Bin & intersections, 
-	        Bin & right, Bin & unknown, int param, REAL value )
-{
-    Bin	headonleft, headonright, tailonleft, tailonright;
-
-    for( Arc_ptr jarc = bin.removearc(); jarc; jarc = bin.removearc() ) {
-
-	REAL tdiff = jarc->tail()[param] - value;
-	REAL hdiff = jarc->head()[param] - value;
-
-	if( tdiff > 0.0 ) {
-	    if( hdiff > 0.0 ) {
-		right.addarc( jarc  );
-	    } else if( hdiff == 0.0 ) {
-		tailonright.addarc( jarc  );
-	    } else {
-	        Arc_ptr	jtemp;
-		switch( arc_split(jarc, param, value, 0) ) {
-		    case 2:
-			tailonright.addarc( jarc  );
-			headonleft.addarc( jarc->next  );
-			break;
-		    case 31:
-			assert( jarc->head()[param] > value );
-			right.addarc( jarc  );
-			tailonright.addarc( jtemp = jarc->next  );
-			headonleft.addarc( jtemp->next  );
-		        break;
-		    case 32:
-			assert( jarc->head()[param] <= value );
-			tailonright .addarc( jarc  );
-			headonleft.addarc( jtemp = jarc->next  );
-			left.addarc( jtemp->next  );
-			break;
-		    case 4:
-			right.addarc( jarc  );
-			tailonright.addarc( jtemp = jarc->next  );
-			headonleft.addarc( jtemp = jtemp->next  );
-			left.addarc( jtemp->next  );
-		}
-	    }
-	} else if( tdiff == 0.0 ) {
-	    if( hdiff > 0.0 ) {
-		headonright.addarc( jarc  );
-	    } else if( hdiff == 0.0 ) {
-		unknown.addarc( jarc  );
-	    } else {
-		headonleft.addarc( jarc  );
-	    }
-	} else {
-	    if( hdiff > 0.0 ) {
-	        Arc_ptr	jtemp;
-		switch( arc_split(jarc, param, value, 1) ) {
-		    case 2:
-			tailonleft.addarc( jarc  );
-			headonright.addarc( jarc->next  );
-			break;
-		    case 31:
-			assert( jarc->head()[param] < value );
-			left.addarc( jarc  );
-			tailonleft.addarc( jtemp = jarc->next  );
-			headonright.addarc( jtemp->next  );
-			break;
-		    case 32:
-			assert( jarc->head()[param] >= value );
-			tailonleft.addarc( jarc  );
-			headonright.addarc( jtemp = jarc->next  );
-			right.addarc( jtemp->next  );
-			break;
-		    case 4:
-			left.addarc( jarc  );
-			tailonleft.addarc( jtemp = jarc->next  );
-			headonright.addarc( jtemp = jtemp->next  );
-			right.addarc( jtemp->next  );
-		}
-	    } else if( hdiff == 0.0 ) {
-		tailonleft.addarc( jarc  );
-	    } else {
-		left.addarc( jarc  );
-	    }
-	}
-    }
-    if( param == 0 ) {
-	classify_headonleft_s( headonleft, intersections, left, value );
-	classify_tailonleft_s( tailonleft, intersections, left, value );
-	classify_headonright_s( headonright, intersections, right, value );
-	classify_tailonright_s( tailonright, intersections, right, value );
-    } else {
-	classify_headonleft_t( headonleft, intersections, left, value );
-	classify_tailonleft_t( tailonleft, intersections, left, value );
-	classify_headonright_t( headonright, intersections, right, value );
-	classify_tailonright_t( tailonright, intersections, right, value );
-    }
-}
-
-inline static void 
-vert_interp( TrimVertex *n, TrimVertex *l, TrimVertex *r, int p, REAL val )
-{
-    assert( val > l->param[p]);
-    assert( val < r->param[p]);
-
-    n->nuid = l->nuid;
-
-    n->param[p] = val;
-    if( l->param[1-p] != r->param[1-p]  ) {
-	REAL ratio = (val - l->param[p]) / (r->param[p] - l->param[p]);
-	n->param[1-p] = l->param[1-p] + 
-		        ratio * (r->param[1-p] - l->param[1-p]);
-    } else {
-	n->param[1-p] = l->param[1-p];
-    }
-}
-	
-int
-Subdivider::arc_split( Arc_ptr jarc, int param, REAL value, int dir )
-{
-    int		maxvertex = jarc->pwlArc->npts;
-    Arc_ptr	jarc1;
-    TrimVertex* v = jarc->pwlArc->pts;
-
-    int		loc[3];
-    switch( pwlarc_intersect( jarc->pwlArc, param, value, dir, loc ) ) {
-
-		// When the parameter value lands on a vertex, life is sweet
-    case INTERSECT_VERTEX: {
-	    jarc1 = new(arcpool) Arc( jarc, new( pwlarcpool) PwlArc( maxvertex-loc[1], &v[loc[1]] ) );
-	    jarc->pwlArc->npts = loc[1] + 1;
-	    jarc1->next = jarc->next;
-	    jarc1->next->prev = jarc1;
-	    jarc->next = jarc1;
-	    jarc1->prev = jarc;
-	    assert(jarc->check() != 0);
-	    return 2;
-	}
-
-		// When the parameter value intersects an edge, we have to
-		// interpolate a new vertex.  There are special cases
-		// if the new vertex is adjacent to one or both of the
-		// endpoints of the arc.
-    case INTERSECT_EDGE: {
-	    int i, j;
-	    if( dir == 0 ) {
-		i = loc[0];
-		j = loc[2];
-	    } else {
-		i = loc[2];
-		j = loc[0];
-	    }
-
-#ifndef NOTDEF
-	    // The split is between vertices at index j and i, in that
-	    // order (j < i)
-	    
-	    // JEB:  This code is my idea of how to do the split without
-	    // increasing the number of links.  I'm doing this so that
-	    // the is_rect routine can recognize rectangles created by
-	    // subdivision.  In exchange for simplifying the curve list,
-      	    // however, it costs in allocated space and vertex copies.
-	    
-	    TrimVertex *newjunk = trimvertexpool.get(maxvertex -i+1 /*-j*/);
-	    int k;
-	    for(k=0; k<maxvertex-i; k++)
-	      {
-		newjunk[k+1] = v[i+k];
-		newjunk[k+1].nuid = jarc->nuid;
-	      }
-	    
-	    TrimVertex *vcopy = trimvertexpool.get(maxvertex);
-	    for(k=0; k<maxvertex; k++)
-	      {
-		vcopy[k].param[0] = v[k].param[0];
-		vcopy[k].param[1] = v[k].param[1];
-	      }
-	    jarc->pwlArc->pts=vcopy;
-
-	    v[i].nuid = jarc->nuid;
-	    v[j].nuid = jarc->nuid;
-	    vert_interp( &newjunk[0], &v[loc[0]], &v[loc[2]], param, value );
-
-	    if( showingDegenerate() )
-		backend.triangle( &v[i], &newjunk[0], &v[j] );
-
-            vcopy[j+1].param[0]=newjunk[0].param[0];
-            vcopy[j+1].param[1]=newjunk[0].param[1];
-
-
-	    jarc1 = new(arcpool) Arc( jarc,
-			new(pwlarcpool) PwlArc(maxvertex-i+1 , newjunk ) );
-
-	    jarc->pwlArc->npts = j+2;
-	    jarc1->next = jarc->next;
-	    jarc1->next->prev = jarc1;
-	    jarc->next = jarc1;
-	    jarc1->prev = jarc;
-	    assert(jarc->check() != 0);
-
-	    return 2;
-#endif //not NOTDEF
-		// JEB: This is the original version:
-#ifdef NOTDEF
-            Arc_ptr    jarc2, jarc3;
-	    
-	    TrimVertex *newjunk = trimvertexpool.get(3);
-	    v[i].nuid = jarc->nuid;
-	    v[j].nuid = jarc->nuid;
-	    newjunk[0] = v[j];
-	    newjunk[2] = v[i];
-	    vert_interp( &newjunk[1], &v[loc[0]], &v[loc[2]], param, value );
-
-	    if( showingDegenerate() )
-		backend.triangle( &newjunk[2], &newjunk[1], &newjunk[0] );
-
-		// New vertex adjacent to both endpoints
-	    if (maxvertex == 2) {
-		jarc1 = new(arcpool) Arc( jarc, new(pwlarcpool) PwlArc( 2, newjunk+1 ) );
-		jarc->pwlArc->npts = 2;
-		jarc->pwlArc->pts = newjunk;
-		jarc1->next = jarc->next;
-		jarc1->next->prev = jarc1;
-		jarc->next = jarc1;
-		jarc1->prev = jarc;
-		assert(jarc->check() != 0);
-
-		return 2;
-
-		// New vertex adjacent to ending point of arc
-	    } else if (maxvertex - j == 2) {
-		jarc1 = new(arcpool) Arc( jarc, new(pwlarcpool) PwlArc( 2, newjunk ) );
-		jarc2 = new(arcpool) Arc( jarc, new(pwlarcpool) PwlArc( 2, newjunk+1 ) );
-		jarc->pwlArc->npts = maxvertex-1;
-		jarc2->next = jarc->next;
-		jarc2->next->prev = jarc2;
-		jarc->next = jarc1;
-		jarc1->prev = jarc;
-		jarc1->next = jarc2;
-		jarc2->prev = jarc1;
-		assert(jarc->check() != 0);
-		return 31;
-
-		// New vertex adjacent to starting point of arc
-	    } else if (i == 1) {
-		jarc1 = new(arcpool) Arc( jarc, new(pwlarcpool) PwlArc( 2, newjunk+1 ) );
-		jarc2 = new(arcpool) Arc( jarc, 
-			new(pwlarcpool) PwlArc( maxvertex-1, &jarc->pwlArc->pts[1] ) );
-		jarc->pwlArc->npts = 2;
-		jarc->pwlArc->pts = newjunk;
-		jarc2->next = jarc->next;
-		jarc2->next->prev = jarc2;
-		jarc->next = jarc1;
-		jarc1->prev = jarc;
-		jarc1->next = jarc2;
-		jarc2->prev = jarc1;
-		assert(jarc->check() != 0);
-		return 32;
-
-		// It's somewhere in the middle
-	    } else {
-		jarc1 = new(arcpool) Arc( jarc, new(pwlarcpool) PwlArc( 2, newjunk ) );
-		jarc2 = new(arcpool) Arc( jarc, new(pwlarcpool) PwlArc( 2, newjunk+1 ) );
-		jarc3 = new(arcpool) Arc( jarc, new(pwlarcpool) PwlArc( maxvertex-i, v+i ) );
-		jarc->pwlArc->npts = j + 1;
-		jarc3->next = jarc->next;
-		jarc3->next->prev = jarc3;
-		jarc->next = jarc1;
-		jarc1->prev = jarc;
-		jarc1->next = jarc2;
-		jarc2->prev = jarc1;
-		jarc2->next = jarc3;
-		jarc3->prev = jarc2;
-		assert(jarc->check() != 0);
-		return 4;
-	    }
-#endif // NOTDEF
-	}
-	default:
-	return -1; //picked -1 since it's not used
-    }
-}
-
-/*----------------------------------------------------------------------------
- * pwlarc_intersect -  find intersection of pwlArc and isoparametric line
- *----------------------------------------------------------------------------
- */
-
-static enum i_result
-pwlarc_intersect(
-    PwlArc *pwlArc,
-    int param,
-    REAL value,
-    int dir,
-    int loc[3] )
-{
-    assert( pwlArc->npts > 0 );
-
-    if( dir ) {
-	TrimVertex *v = pwlArc->pts;
-	int imin = 0; 
-	int imax = pwlArc->npts - 1;
-	assert( value > v[imin].param[param] );
-	assert( value < v[imax].param[param] );	
-	while( (imax - imin) > 1 ) {
-	    int imid = (imax + imin)/2;
-	    if( v[imid].param[param] > value )
-		imax = imid;
-	    else if( v[imid].param[param] < value )
-		imin = imid;
-	    else {
-		loc[1] = imid;
-		return INTERSECT_VERTEX;
-	    }
-	}
-	loc[0] = imin;
-	loc[2] = imax;
-	return INTERSECT_EDGE;
-    } else {
-	TrimVertex *v = pwlArc->pts;
-	int imax = 0; 
-	int imin = pwlArc->npts - 1;
-	assert( value > v[imin].param[param] );
-	assert( value < v[imax].param[param] );	
-	while( (imin - imax) > 1 ) {
-	    int imid = (imax + imin)/2;
-	    if( v[imid].param[param] > value )
-		imax = imid;
-	    else if( v[imid].param[param] < value )
-		imin = imid;
-	    else {
-		loc[1] = imid;
-		return INTERSECT_VERTEX;
-	    }
-	}
-	loc[0] = imin;
-	loc[2] = imax;
-	return INTERSECT_EDGE;
-    }
-}
-
-/*----------------------------------------------------------------------------
- * arc_classify - determine which side of a line a jarc lies 
- *----------------------------------------------------------------------------
- */
-
-#ifndef NDEBUG  // for asserts only
-static int
-arc_classify( Arc_ptr jarc, int param, REAL value )
-{
-    REAL tdiff, hdiff;
-    if( param == 0 ) {
-	tdiff = jarc->tail()[0] - value;
-	hdiff = jarc->head()[0] - value;
-    } else {
-	tdiff = jarc->tail()[1] - value;
-	hdiff = jarc->head()[1] - value;
-    }
-
-    if( tdiff > 0.0 ) {
-	if( hdiff > 0.0 ) {
-	    return 0x11;
-	} else if( hdiff == 0.0 ) {
-	    return 0x12;
-	} else {
-	    return 0x10;
-	}
-    } else if( tdiff == 0.0 ) {
-	if( hdiff > 0.0 ) {
-	    return 0x21;
-	} else if( hdiff == 0.0 ) {
-	    return 0x22;
-	} else {
-	    return 0x20;
-	}
-    } else {
-	if( hdiff > 0.0 ) {
-	    return 0x01;
-	} else if( hdiff == 0.0 ) {
-	    return 0x02;
-	} else {
-	    return 0;
-	}
-    }
-}
-#endif
-
-void
-Subdivider::classify_tailonleft_s( Bin& bin, Bin& in, Bin& out, REAL val )
-{
-    /* tail at left, head on line */
-    Arc_ptr j;
-
-    while( (j = bin.removearc()) != NULL ) {
-	assert( arc_classify( j, 0, val ) == 0x02 );
-	j->clearitail();
-
-	REAL diff = j->next->head()[0] - val;
-	if( diff > 0.0 ) {
-	    in.addarc( j );
-	} else if( diff < 0.0 ) {
-	    if( ccwTurn_sl( j, j->next ) )
-		out.addarc( j );
-	    else
-		in.addarc( j );
-	} else {
-	    if( j->next->tail()[1] > j->next->head()[1] ) 
-		in.addarc(j);
-	    else
-		out.addarc(j);
-	}
-    }
-}
-
-void
-Subdivider::classify_tailonleft_t( Bin& bin, Bin& in, Bin& out, REAL val )
-{
-    /* tail at left, head on line */
-    Arc_ptr j;
-
-    while( (j = bin.removearc()) != NULL ) {
-	assert( arc_classify( j, 1, val ) == 0x02 );
-	j->clearitail();
-
-        REAL diff = j->next->head()[1] - val;
-	if( diff > 0.0 ) {
-	    in.addarc( j );
-	} else if( diff < 0.0 ) {
-	    if( ccwTurn_tl( j, j->next ) )
-		out.addarc( j );
-	    else
-		in.addarc( j );
-	} else {
-	    if (j->next->tail()[0] > j->next->head()[0] )
-		out.addarc( j );
-	    else
-		in.addarc( j );
-	}
-    }
-}
-
-void
-Subdivider::classify_headonleft_s( Bin& bin, Bin& in, Bin& out, REAL val )
-{
-    /* tail on line, head at left */
-    Arc_ptr j;
-
-    while( (j = bin.removearc()) != NULL ) {
-	assert( arc_classify( j, 0, val ) == 0x20 );
-
-	j->setitail();
-
-	REAL diff = j->prev->tail()[0] - val;
-	if( diff > 0.0 ) {
-	    out.addarc( j );
-	} else if( diff < 0.0 ) {
-	    if( ccwTurn_sl( j->prev, j ) )
-		out.addarc( j );
-	    else
-		in.addarc( j );
-	} else {
-	    if( j->prev->tail()[1] > j->prev->head()[1] )
-		in.addarc( j );
-	    else
-		out.addarc( j );
-	}
-    }
-}
-
-void
-Subdivider::classify_headonleft_t( Bin& bin, Bin& in, Bin& out, REAL val )
-{
-    /* tail on line, head at left */
-    Arc_ptr j;
-
-    while( (j = bin.removearc()) != NULL ) {
-	assert( arc_classify( j, 1, val ) == 0x20 );
-	j->setitail();
-
-	REAL diff = j->prev->tail()[1] - val;
-	if( diff > 0.0 ) {
-	    out.addarc( j );
-	} else if( diff < 0.0 ) {
-	    if( ccwTurn_tl( j->prev, j ) )
-		out.addarc( j );
-	    else
-		in.addarc( j );
-	} else {
-	    if( j->prev->tail()[0] > j->prev->head()[0] )
-		out.addarc( j );
-	    else
-		in.addarc( j );
-	}
-    }
-}
-
-
-void
-Subdivider::classify_tailonright_s( Bin& bin, Bin& in, Bin& out, REAL val )
-{
-    /* tail at right, head on line */
-    Arc_ptr j;
-
-    while( (j = bin.removearc()) != NULL ) {
-	assert( arc_classify( j, 0, val ) == 0x12);
-	
-	j->clearitail();
-
-        REAL diff = j->next->head()[0] - val;
-	if( diff > 0.0 ) {
-	    if( ccwTurn_sr( j, j->next ) )
-		out.addarc( j );
-	    else
-		in.addarc( j );
-	} else if( diff < 0.0 ) {
-	    in.addarc( j );
-	} else {
-	    if( j->next->tail()[1] > j->next->head()[1] ) 
-		out.addarc( j );
-	    else
-		in.addarc( j );
-	}
-    }
-}
-
-void
-Subdivider::classify_tailonright_t( Bin& bin, Bin& in, Bin& out, REAL val )
-{
-    /* tail at right, head on line */
-    Arc_ptr j;
-
-    while( (j = bin.removearc()) != NULL ) {
-	assert( arc_classify( j, 1, val ) == 0x12);
-	
-	j->clearitail();
-
-	REAL diff =  j->next->head()[1] - val;
-	if( diff > 0.0 ) {
-	    if( ccwTurn_tr( j, j->next ) )
-		out.addarc( j );
-	    else
-		in.addarc( j );
-	} else if( diff < 0.0 ) { 
-	    in.addarc( j );
-	} else {
-	    if( j->next->tail()[0] > j->next->head()[0] ) 
-		in.addarc( j );
-	    else
-		out.addarc( j );
-	}
-    }
-}
-
-void
-Subdivider::classify_headonright_s( Bin& bin, Bin& in, Bin& out, REAL val )
-{
-    /* tail on line, head at right */
-    Arc_ptr j;
-
-    while( (j = bin.removearc()) != NULL ) {
-	assert( arc_classify( j, 0, val ) == 0x21 );
-    
-	j->setitail();
-
-        REAL diff = j->prev->tail()[0] - val;
-	if( diff > 0.0 ) { 
-	    if( ccwTurn_sr( j->prev, j ) )
-		out.addarc( j );
-	    else
-		in.addarc( j );
-	} else if( diff < 0.0 ) {
-	    out.addarc( j );
-	} else {
-	    if( j->prev->tail()[1] > j->prev->head()[1] )
-		out.addarc( j );
-	    else
-		in.addarc( j );
-	}
-    }
-}
-
-void
-Subdivider::classify_headonright_t( Bin& bin, Bin& in, Bin& out, REAL val )
-{
-    /* tail on line, head at right */
-    Arc_ptr j;
-
-    while( (j = bin.removearc()) != NULL ) {
-	assert( arc_classify( j, 1, val ) == 0x21 );
-    
-	j->setitail();
-
-        REAL diff = j->prev->tail()[1] - val;
-	if( diff > 0.0 ) { 
-	    if( ccwTurn_tr( j->prev, j ) )
-		out.addarc( j );
-	    else
-		in.addarc( j );
-	} else if( diff < 0.0 ) {
-	    out.addarc( j );
-	} else {
-	    if( j->prev->tail()[0] > j->prev->head()[0] )
-		in.addarc( j );
-	    else
-		out.addarc( j );
-	}
-    }
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/jarcloc.h b/src/glu/sgi/libnurbs/internals/jarcloc.h
deleted file mode 100644
index 5297036fa55..00000000000
--- a/src/glu/sgi/libnurbs/internals/jarcloc.h
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * jarcloc.h
- *
- */
-
-#ifndef __glujarcloc_h_
-#define __glujarcloc_h_
-
-#include "arc.h"
-
-class Jarcloc {
-private:
-    Arc_ptr 		arc;
-    TrimVertex		*p;
-    TrimVertex		*plast;
-public:
-    inline void		init( Arc_ptr a, long first, long last ) { arc = a; p=&a->pwlArc->pts[first]; plast = &a->pwlArc->pts[last]; }
-    inline TrimVertex *	getnextpt( void );
-    inline TrimVertex *	getprevpt( void );
-    inline void		reverse();
-};
-
-inline void
-Jarcloc::reverse()
-{
-    if( plast == &arc->pwlArc->pts[0] )
-	plast =  &arc->pwlArc->pts[arc->pwlArc->npts - 1];
-    else
-	plast =  &arc->pwlArc->pts[0];
-}
-
-inline TrimVertex *
-Jarcloc::getnextpt()
-{
-    assert( p <= plast );
-    if( p == plast ) {
-	arc = arc->next;
-	p = &arc->pwlArc->pts[0];
-	plast = &arc->pwlArc->pts[arc->pwlArc->npts - 1];
-	assert( p < plast );
-    }
-    return p++;
-}
-	
-inline TrimVertex *
-Jarcloc::getprevpt()
-{
-    assert( p >= plast );
-    if( p == plast ) {
-	arc = arc->prev;
-	p = &arc->pwlArc->pts[arc->pwlArc->npts - 1];
-	plast = &arc->pwlArc->pts[0];
-	assert( p > plast );
-    }
-    return p--;
-}
-#endif /* __glujarcloc_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/knotvector.cc b/src/glu/sgi/libnurbs/internals/knotvector.cc
deleted file mode 100644
index dcbf0067d85..00000000000
--- a/src/glu/sgi/libnurbs/internals/knotvector.cc
+++ /dev/null
@@ -1,142 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * knotvector.c++
- *
- */
-
-#include "glimports.h"
-#include "mystdio.h"
-#include "myassert.h"
-#include "knotvector.h"
-#include "defines.h"
-
-#ifdef __WATCOMC__
-#pragma warning 726 10
-#endif
-
-void Knotvector::init( long _knotcount, long _stride, long _order, INREAL *_knotlist )
-{
-    knotcount = _knotcount;
-    stride = _stride;
-    order = _order;
-    knotlist = new Knot[_knotcount];
-    assert( knotlist != 0 );
-
-    for( int i = 0; i != _knotcount; i++ )
-	knotlist[i] = (Knot) _knotlist[i];
-}
-
-Knotvector::Knotvector( void )
-{
-    knotcount = 0;
-    stride = 0;
-    order = 0;
-    knotlist = 0;
-}
-
-Knotvector::~Knotvector( void )
-{
-    if( knotlist ) delete[] knotlist;
-}
-
-int Knotvector::validate( void )
-{
-   /* kindex is used as an array index so subtract one first,
-     * this propagates throughout the code so study carefully */
-    long	kindex = knotcount-1;
-
-    if( order < 1 || order > MAXORDER ) {
-	// spline order un-supported
-	return( 1 );
-    }
-
-    if( knotcount < (2 * order) ) {
-	// too few knots
-	return( 2 );
-    }
-
-    if( identical( knotlist[kindex-(order-1)], knotlist[order-1]) ) {
-	// valid knot range is empty
-	return( 3 );
-    }
-
-    for( long i = 0; i < kindex; i++)
-	if( knotlist[i] > knotlist[i+1] ) {
-	    // decreasing knot sequence
-	    return( 4 );
-	}
-        
-    /* check for valid multiplicity */
-
-    /*	kindex is currently the index of the last knot.
-     *	In the next loop  it is decremented to ignore the last knot
-     *	and the loop stops when kindex	is 2 so as to ignore the first
-     *	knot as well.  These knots are not used in computing
-     *	knot multiplicities.
-     */
-
-    long multi = 1;
-    for( ; kindex >= 1; kindex-- ) {
-	if( knotlist[kindex] - knotlist[kindex-1] < TOLERANCE ) {
-	    multi++;
-	    continue;
-	}
-	if ( multi > order ) {
-	    // knot multiplicity greater than order of spline
-	    return( 5 );
-	}
-	multi = 1;
-    }
-
-    if ( multi > order ) {
-	// knot multiplicity greater than order of spline
-	return( 5 );
-    }
-
-    return 0;
-}
-
-void Knotvector::show( const char *msg )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "%s\n", msg );
-    _glu_dprintf( "order = %ld, count = %ld\n", order, knotcount );
-
-    for( int i=0; i<knotcount; i++ )
-	_glu_dprintf( "knot[%d] = %g\n", i, knotlist[i] );
-#endif
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/knotvector.h b/src/glu/sgi/libnurbs/internals/knotvector.h
deleted file mode 100644
index 85b162f6f11..00000000000
--- a/src/glu/sgi/libnurbs/internals/knotvector.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * knotvector.h
- *
- */
-
-#ifndef __gluknotvector_h_
-#define __gluknotvector_h_
-
-#include "types.h"
-
-struct Knotvector { /* a knot vector */
-			Knotvector( void );
-			~Knotvector( void );
-    void		init( long, long, long, INREAL * );
-    int			validate( void );
-    void 		show( const char * );
-
-    long		order;		/* order of spline  */
-    long		knotcount;	/* number of knots  */
-    long		stride;		/* bytes between points */
-    Knot *		knotlist;	/* global knot vector */
-};
-
-/* tolerance to test knot coincidence */
-#define TOLERANCE 		1.0e-5
-
-inline int 
-identical( Knot x, Knot y )
-{
-    return ((x-y) < TOLERANCE) ? 1 : 0;
-}
-#endif /* __gluknotvector_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/mapdesc.cc b/src/glu/sgi/libnurbs/internals/mapdesc.cc
deleted file mode 100644
index 0a96c5f45b8..00000000000
--- a/src/glu/sgi/libnurbs/internals/mapdesc.cc
+++ /dev/null
@@ -1,841 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * mapdesc.c++
- *
- */
-
-#include <stdio.h>
-#include "glimports.h"
-#include "mystdio.h"
-#include "myassert.h"
-#include "mystring.h"
-#include "mymath.h"
-#include "backend.h"
-#include "nurbsconsts.h"
-#include "mapdesc.h"
-
-Mapdesc::Mapdesc( long _type, int _israt, int _ncoords, Backend& b ) 
-    : backend( b )
-{
-    type 		= _type;
-    isrational 		= _israt;
-    ncoords 		= _ncoords;
-    hcoords		= _ncoords + (_israt ? 0 : 1 );
-    inhcoords		= _ncoords - (_israt ? 1 : 0 );
-    mask 		= ((1<<(inhcoords*2))-1);
-    next		= 0;
-
-    assert( hcoords <= MAXCOORDS );
-    assert( inhcoords >= 1 );
-
-    pixel_tolerance 	= 1.0;
-    error_tolerance	= 1.0;
-    bbox_subdividing	= N_NOBBOXSUBDIVISION;
-    culling_method 	= N_NOCULLING;		
-    sampling_method 	= N_NOSAMPLING;
-    clampfactor 	= N_NOCLAMPING;
-    minsavings 		= N_NOSAVINGSSUBDIVISION;
-    s_steps  		= 0.0;
-    t_steps 		= 0.0;
-    maxrate 		= ( s_steps < 0.0 ) ? 0.0 : s_steps;
-    maxsrate 		= ( s_steps < 0.0 ) ? 0.0 : s_steps;
-    maxtrate 		= ( t_steps < 0.0 ) ? 0.0 : t_steps;
-    identify( bmat );
-    identify( cmat );
-    identify( smat );
-    for( int i = 0; i != inhcoords; i++ )
-	bboxsize[i] = 1.0;
-}
-
-void
-Mapdesc::setBboxsize( INREAL *mat )
-{
-    for( int i = 0; i != inhcoords; i++ )
-	bboxsize[i] = (REAL) mat[i];
-}
-
-void
-Mapdesc::identify( REAL dest[MAXCOORDS][MAXCOORDS] )
-{
-    memset( dest, 0, sizeof( REAL ) * MAXCOORDS * MAXCOORDS );
-    for( int i=0; i != hcoords; i++ )
-	dest[i][i] = 1.0;
-}
-
-void
-Mapdesc::surfbbox( REAL bb[2][MAXCOORDS] )
-{
-    backend.surfbbox( type, bb[0], bb[1] );
-}
-
-void 
-Mapdesc::copy( REAL dest[MAXCOORDS][MAXCOORDS], long n, INREAL *src,
-	long rstride, long cstride )
-{
-    assert( n >= 0 );
-    for( int i=0; i != n; i++ )
-        for( int j=0; j != n; j++ )
-	    dest[i][j] = src[i*rstride + j*cstride];
-}
-
-/*--------------------------------------------------------------------------
- * copyPt - copy a homogeneous point
- *--------------------------------------------------------------------------
- */
-void
-Mapdesc::copyPt( REAL *d, REAL *s )
-{
-    assert( hcoords > 0 );
-    switch( hcoords  ) {
-	case 4: 
-	    d[3] = s[3];
-	    d[2] = s[2];
-	    d[1] = s[1];
-	    d[0] = s[0];
-	    break;
-	case 3: 
-	    d[2] = s[2];
-	    d[1] = s[1];
-	    d[0] = s[0];
-	    break;
-	case 2: 
-	    d[1] = s[1];
-	    d[0] = s[0];
-	    break;
-	case 1: 
-	    d[0] = s[0];
-	    break;
-	case 5: 
-	    d[4] = s[4];
-	    d[3] = s[3];
-	    d[2] = s[2];
-	    d[1] = s[1];
-	    d[0] = s[0];
-	    break;
-	default:
-	    memcpy( d, s, hcoords * sizeof( REAL ) );
-	    break;
-    }
-}
-
-/*--------------------------------------------------------------------------
- * sumPt - compute affine combination of two homogeneous points
- *--------------------------------------------------------------------------
- */
-void
-Mapdesc::sumPt( REAL *dst, REAL *src1, REAL *src2, register REAL alpha, register REAL beta )
-{
-    assert( hcoords > 0 );
-    switch( hcoords  ) {
-	case 4: 
-	    dst[3] = src1[3] * alpha + src2[3] * beta;
-	    dst[2] = src1[2] * alpha + src2[2] * beta;
-	    dst[1] = src1[1] * alpha + src2[1] * beta;
-	    dst[0] = src1[0] * alpha + src2[0] * beta;
-	    break;
-	case 3: 
-	    dst[2] = src1[2] * alpha + src2[2] * beta;
-	    dst[1] = src1[1] * alpha + src2[1] * beta;
-	    dst[0] = src1[0] * alpha + src2[0] * beta;
-	    break;
-	case 2: 
-	    dst[1] = src1[1] * alpha + src2[1] * beta;
-	    dst[0] = src1[0] * alpha + src2[0] * beta;
-	    break;
-	case 1: 
-	    dst[0] = src1[0] * alpha + src2[0] * beta;
-	    break;
-	case 5: 
-	    dst[4] = src1[4] * alpha + src2[4] * beta;
-	    dst[3] = src1[3] * alpha + src2[3] * beta;
-	    dst[2] = src1[2] * alpha + src2[2] * beta;
-	    dst[1] = src1[1] * alpha + src2[1] * beta;
-	    dst[0] = src1[0] * alpha + src2[0] * beta;
-	    break;
-	default: {
-		for( int i = 0; i != hcoords; i++ )
-		    dst[i] = src1[i] * alpha + src2[i] * beta;
-            }
-	    break;
-    }
-}
-
-/*--------------------------------------------------------------------------
- * clipbits - compute bit-vector indicating point/window position
- *		       of a (transformed) homogeneous point
- *--------------------------------------------------------------------------
- */
-unsigned int
-Mapdesc::clipbits( REAL *p )
-{
-    assert( inhcoords >= 0 );
-    assert( inhcoords <= 3 );
-
-    register int nc = inhcoords;
-    register REAL pw = p[nc];
-    register REAL nw = -pw;
-    register unsigned int bits = 0;
-
-    if( pw == 0.0 ) return mask;
-
-    if( pw > 0.0 ) {
-	switch( nc ) {
-	case 3:
-	    if( p[2] <= pw ) bits |= (1<<5);
-	    if( p[2] >= nw ) bits |= (1<<4);
-	    if( p[1] <= pw ) bits |= (1<<3);
-	    if( p[1] >= nw ) bits |= (1<<2);
-	    if( p[0] <= pw ) bits |= (1<<1);
-	    if( p[0] >= nw ) bits |= (1<<0);
-            return bits;
-	case 2:
-	    if( p[1] <= pw ) bits |= (1<<3);
-	    if( p[1] >= nw ) bits |= (1<<2);
-	    if( p[0] <= pw ) bits |= (1<<1);
-	    if( p[0] >= nw ) bits |= (1<<0);
-            return bits;
-	case 1:
-	    if( p[0] <= pw ) bits |= (1<<1);
-	    if( p[0] >= nw ) bits |= (1<<0);
-            return bits;
-	default: {
-		int bit = 1;
-		for( int i=0; i<nc; i++ ) {
-		    if( p[i] >= nw ) bits |= bit; 
-		    bit <<= 1;
-		    if( p[i] <= pw ) bits |= bit; 
-		    bit <<= 1;
-		}
-		abort();
-		break;
-	    }
-	}
-    } else { 
-	switch( nc ) {
-	case 3:
-	    if( p[2] <= nw ) bits |= (1<<5);
-	    if( p[2] >= pw ) bits |= (1<<4);
-	    if( p[1] <= nw ) bits |= (1<<3);
-	    if( p[1] >= pw ) bits |= (1<<2);
-	    if( p[0] <= nw ) bits |= (1<<1);
-	    if( p[0] >= pw ) bits |= (1<<0);
-            return bits;
-	case 2:
-	    if( p[1] <= nw ) bits |= (1<<3);
-	    if( p[1] >= pw ) bits |= (1<<2);
-	    if( p[0] <= nw ) bits |= (1<<1);
-	    if( p[0] >= pw ) bits |= (1<<0);
-            return bits;
-	case 1:
-	    if( p[0] <= nw ) bits |= (1<<1);
-	    if( p[0] >= pw ) bits |= (1<<0);
-            return bits;
-	default: {
-		int bit = 1; 
-		for( int i=0; i<nc; i++ ) {
-		    if( p[i] >= pw ) bits |= bit; 
-		    bit <<= 1;
-		    if( p[i] <= nw ) bits |= bit; 
-		    bit <<= 1;
-		}
-		abort();
-		break;
-	    }
-	}
-    }
-    return bits;
-}
-
-/*--------------------------------------------------------------------------
- * xformRational - transform a homogeneous point
- *--------------------------------------------------------------------------
- */
-void
-Mapdesc::xformRational( Maxmatrix mat, REAL *d, REAL *s )
-{
-    assert( hcoords >= 0 );
-
-    if( hcoords == 3 ) {
-	REAL x = s[0];
-	REAL y = s[1];
-	REAL z = s[2];
-	d[0] = x*mat[0][0]+y*mat[1][0]+z*mat[2][0];
-	d[1] = x*mat[0][1]+y*mat[1][1]+z*mat[2][1];
-	d[2] = x*mat[0][2]+y*mat[1][2]+z*mat[2][2];
-    } else if( hcoords == 4 ) {
-	REAL x = s[0];
-	REAL y = s[1];
-	REAL z = s[2];
-	REAL w = s[3];
-	d[0] = x*mat[0][0]+y*mat[1][0]+z*mat[2][0]+w*mat[3][0];
-	d[1] = x*mat[0][1]+y*mat[1][1]+z*mat[2][1]+w*mat[3][1];
-	d[2] = x*mat[0][2]+y*mat[1][2]+z*mat[2][2]+w*mat[3][2];
-	d[3] = x*mat[0][3]+y*mat[1][3]+z*mat[2][3]+w*mat[3][3];
-    } else {
-	for( int i=0; i != hcoords; i++ ) {
-	    d[i] = 0;
-	    for( int j = 0; j != hcoords; j++ )
-		d[i] += s[j] * mat[j][i];
-	}
-    }
-}
-
-/*--------------------------------------------------------------------------
- * xformNonrational - transform a inhomogeneous point to a homogeneous point
- *--------------------------------------------------------------------------
- */
-void
-Mapdesc::xformNonrational( Maxmatrix mat, REAL *d, REAL *s )
-{
-    if( inhcoords == 2 ) {
-	REAL x = s[0];
-	REAL y = s[1];
-	d[0] = x*mat[0][0]+y*mat[1][0]+mat[2][0];
-	d[1] = x*mat[0][1]+y*mat[1][1]+mat[2][1];
-	d[2] = x*mat[0][2]+y*mat[1][2]+mat[2][2];
-    } else if( inhcoords == 3 ) {
-	REAL x = s[0];
-	REAL y = s[1];
-	REAL z = s[2];
-	d[0] = x*mat[0][0]+y*mat[1][0]+z*mat[2][0]+mat[3][0];
-	d[1] = x*mat[0][1]+y*mat[1][1]+z*mat[2][1]+mat[3][1];
-	d[2] = x*mat[0][2]+y*mat[1][2]+z*mat[2][2]+mat[3][2];
-	d[3] = x*mat[0][3]+y*mat[1][3]+z*mat[2][3]+mat[3][3];
-    } else {
-        assert( inhcoords >= 0 );
-	for( int i=0; i != hcoords; i++ ) {
-	    d[i] = mat[inhcoords][i];
-	    for( int j = 0; j < inhcoords; j++ )
-		d[i] += s[j] * mat[j][i];
-	}
-    }
-}
-
-/*--------------------------------------------------------------------------
- * xformAndCullCheck - transform a set of points that may be EITHER 
- *	homogeneous or inhomogeneous depending on the map description and
- *	check if they are either completely inside, completely outside, 
- *	or intersecting the viewing frustrum.
- *--------------------------------------------------------------------------
- */
-int
-Mapdesc::xformAndCullCheck( 
-    REAL *pts, int uorder, int ustride, int vorder, int vstride )
-{
-    assert( uorder > 0 );
-    assert( vorder > 0 );
-
-    unsigned int inbits = mask;
-    unsigned int outbits = 0;
-
-    REAL *p = pts;
-    for( REAL *pend = p + uorder * ustride; p != pend; p += ustride ) {
-        REAL *q = p;
-        for( REAL *qend = q + vorder * vstride; q != qend; q += vstride ) {
-    	    REAL cpts[MAXCOORDS];
-	    xformCulling( cpts, q );
-	    unsigned int bits = clipbits( cpts );
-	    outbits |= bits;
-	    inbits &= bits;
-	    if( ( outbits == (unsigned int)mask ) && ( inbits != (unsigned int)mask ) ) return CULL_ACCEPT;
-	} 
-    }
-
-    if( outbits != (unsigned int)mask ) {
-	return CULL_TRIVIAL_REJECT;
-    } else if( inbits == (unsigned int)mask ) {
-	return CULL_TRIVIAL_ACCEPT;
-    } else {
-	return CULL_ACCEPT;
-    }
-}
-
-/*--------------------------------------------------------------------------
- * cullCheck - check if a set of homogeneous transformed points are 
- *	either completely inside, completely outside, 
- *	or intersecting the viewing frustrum.
- *--------------------------------------------------------------------------
- */
-int
-Mapdesc::cullCheck( REAL *pts, int uorder, int ustride, int vorder, int vstride )
-{
-    unsigned int inbits = mask;
-    unsigned int outbits  = 0;
-
-    REAL *p = pts;
-    for( REAL *pend = p + uorder * ustride; p != pend; p += ustride ) {
-        REAL *q = p;
-        for( REAL *qend = q + vorder * vstride; q != qend; q += vstride ) {
-	    unsigned int bits = clipbits( q );
-	    outbits |= bits;
-	    inbits &= bits;
-	    if( ( outbits == (unsigned int)mask ) && ( inbits != (unsigned int)mask ) ) return CULL_ACCEPT;
-	} 
-    }
-
-    if( outbits != (unsigned int)mask ) {
-	return CULL_TRIVIAL_REJECT;
-    } else if( inbits == (unsigned int)mask ) {
-	return CULL_TRIVIAL_ACCEPT;
-    } else {
-	return CULL_ACCEPT;
-    }
-}
-
-/*--------------------------------------------------------------------------
- * cullCheck - check if a set of homogeneous transformed points are 
- *	either completely inside, completely outside, 
- *	or intersecting the viewing frustrum.
- *--------------------------------------------------------------------------
- */
-int
-Mapdesc::cullCheck( REAL *pts, int order, int stride )
-{
-    unsigned int inbits = mask;
-    unsigned int outbits  = 0;
-
-    REAL *p = pts;
-    for( REAL *pend = p + order * stride; p != pend; p += stride ) {
-	unsigned int bits = clipbits( p );
-	outbits |= bits;
-	inbits &= bits;
-	if( ( outbits == (unsigned int)mask ) && ( inbits != (unsigned int)mask ) ) return CULL_ACCEPT;
-    }
-
-    if( outbits != (unsigned int)mask ) {
-	return CULL_TRIVIAL_REJECT;
-    } else if( inbits == (unsigned int)mask ) {
-	return CULL_TRIVIAL_ACCEPT;
-    } else {
-	return CULL_ACCEPT;
-    }
-}
-
-/*--------------------------------------------------------------------------
- * xformSampling - transform a set of points that may be EITHER 
- *	homogeneous or inhomogeneous depending on the map description 
- *	into sampling space 
- *--------------------------------------------------------------------------
- */
-void
-Mapdesc::xformSampling( REAL *pts, int order, int stride, REAL *sp, int outstride )
-{
-    xformMat( smat, pts, order, stride, sp, outstride );
-}
-
-void
-Mapdesc::xformBounding( REAL *pts, int order, int stride, REAL *sp, int outstride )
-{
-    xformMat( bmat, pts, order, stride, sp, outstride );
-}
-
-/*--------------------------------------------------------------------------
- * xformCulling - transform a set of points that may be EITHER 
- *	homogeneous or inhomogeneous depending on the map description 
- *	into culling space 
- *--------------------------------------------------------------------------
- */
-void
-Mapdesc::xformCulling( REAL *pts, int order, int stride, REAL *cp, int outstride )
-{
-    xformMat( cmat, pts, order, stride, cp, outstride );
-}
-
-/*--------------------------------------------------------------------------
- * xformCulling - transform a set of points that may be EITHER 
- *	homogeneous or inhomogeneous depending on the map description 
- *	into culling space 
- *--------------------------------------------------------------------------
- */
-void
-Mapdesc::xformCulling( REAL *pts, 
-    int uorder, int ustride,
-    int vorder, int vstride, 
-    REAL *cp, int outustride, int outvstride )
-{
-    xformMat( cmat, pts, uorder, ustride, vorder, vstride, cp, outustride, outvstride );
-}
-
-/*--------------------------------------------------------------------------
- * xformSampling - transform a set of points that may be EITHER 
- *	homogeneous or inhomogeneous depending on the map description 
- *	into sampling space 
- *--------------------------------------------------------------------------
- */
-void
-Mapdesc::xformSampling( REAL *pts, 
-    int uorder, int ustride, 
-    int vorder, int vstride, 
-    REAL *sp, int outustride, int outvstride )
-{
-    xformMat( smat, pts, uorder, ustride, vorder, vstride, sp, outustride, outvstride );
-}
-
-void
-Mapdesc::xformBounding( REAL *pts, 
-    int uorder, int ustride, 
-    int vorder, int vstride, 
-    REAL *sp, int outustride, int outvstride )
-{
-    xformMat( bmat, pts, uorder, ustride, vorder, vstride, sp, outustride, outvstride );
-}
-
-void
-Mapdesc::xformMat( 
-    Maxmatrix	mat, 
-    REAL *	pts, 
-    int 	order, 
-    int 	stride,
-    REAL *	cp, 
-    int 	outstride )
-{
-    if( isrational ) {
-	REAL *pend = pts + order * stride;
-	for( REAL *p = pts ; p != pend; p += stride ) {
-	    xformRational( mat, cp, p );
-	    cp += outstride;
-	}       
-    } else {
-	REAL *pend = pts + order * stride;
-	for( REAL *p = pts ; p != pend; p += stride ) {
-	    xformNonrational( mat, cp, p );
-	    cp += outstride;
-	}	
-    }
-}
-
-void
-Mapdesc::xformMat( Maxmatrix mat, REAL *pts, 
-    int uorder, int ustride, 
-    int vorder, int vstride, 
-    REAL *cp, int outustride, int outvstride )
-{
-    if( isrational ) {
-	REAL *pend = pts + uorder * ustride;
-	for( REAL *p = pts ; p != pend; p += ustride ) {
-	    REAL *cpts2 = cp;
-	    REAL *qend = p + vorder * vstride;
-	    for( REAL *q = p; q != qend; q += vstride ) {
-		xformRational( mat, cpts2, q );
-		cpts2 += outvstride;
-	    } 
-	    cp += outustride;
-	}
-    } else {
-	REAL *pend = pts + uorder * ustride;
-	for( REAL *p = pts ; p != pend; p += ustride ) {
-	    REAL *cpts2 = cp;
-	    REAL *qend = p + vorder * vstride;
-	    for( REAL *q = p; q != qend; q += vstride ) {
-		xformNonrational( mat, cpts2, q );
-		cpts2 += outvstride;
-	    } 
-	    cp += outustride;
-	}
-    }
-}
-
-/*--------------------------------------------------------------------------
- * subdivide - subdivide a curve along an isoparametric line
- *--------------------------------------------------------------------------
- */
-
-void
-Mapdesc::subdivide( REAL *src, REAL *dst, REAL v, int stride, int order )
-{
-    REAL mv = 1.0 - v;
-
-    for( REAL *send=src+stride*order; src!=send; send-=stride, dst+=stride ) {
-	copyPt( dst, src );
-	REAL *qpnt = src + stride;
-	for( REAL *qp=src; qpnt!=send; qp=qpnt, qpnt+=stride )
-	    sumPt( qp, qp, qpnt, mv, v );
-    }
-}
-
-/*--------------------------------------------------------------------------
- * subdivide - subdivide a patch along an isoparametric line
- *--------------------------------------------------------------------------
- */
-
-void
-Mapdesc::subdivide( REAL *src, REAL *dst, REAL v, 
-    int so, int ss, int to, int ts  )
-{
-    REAL mv = 1.0 - v;
-
-    for( REAL *slast = src+ss*so; src != slast; src += ss, dst += ss ) {
-	REAL *sp = src;
-	REAL *dp = dst;
-        for( REAL *send = src+ts*to; sp != send; send -= ts, dp += ts ) {
-	    copyPt( dp, sp );
-	    REAL *qp = sp;
-	    for( REAL *qpnt = sp+ts; qpnt != send; qp = qpnt, qpnt += ts )
-	        sumPt( qp, qp, qpnt, mv, v );
-	}
-    }
-}
-
-
-#define sign(x)	((x > 0) ? 1 : ((x < 0.0) ? -1 : 0))
-
-/*--------------------------------------------------------------------------
- * project - project a set of homogeneous coordinates into inhomogeneous ones
- *--------------------------------------------------------------------------
- */
-int
-Mapdesc::project( REAL *src, int rstride, int cstride, 
-	          REAL *dest, int trstride, int tcstride,
-		  int nrows, int ncols )
-{
-    int s = sign( src[inhcoords] );
-    REAL *rlast = src + nrows * rstride;
-    REAL *trptr = dest;
-    for( REAL *rptr=src; rptr != rlast; rptr+=rstride, trptr+=trstride ) {
-	REAL *clast = rptr + ncols * cstride;
-	REAL *tcptr = trptr;
-	for( REAL *cptr = rptr; cptr != clast; cptr+=cstride, tcptr+=tcstride ) {
-	    REAL *coordlast = cptr + inhcoords;
-	    if( sign( *coordlast ) != s ) return 0;
-	    REAL *tcoord = tcptr;
-	    for( REAL *coord = cptr; coord != coordlast; coord++, tcoord++ ) {
-		*tcoord = *coord / *coordlast;
-	    }
-	}
-    }
-    return 1;
-}
-
-/*--------------------------------------------------------------------------
- * project - project a set of homogeneous coordinates into inhomogeneous ones
- *--------------------------------------------------------------------------
- */
-int
-Mapdesc::project( REAL *src, int stride, REAL *dest, int tstride, int ncols )
-{
-    int s = sign( src[inhcoords] );
-
-    REAL *clast = src + ncols * stride;
-    for( REAL *cptr = src, *tcptr = dest; cptr != clast; cptr+=stride, tcptr+=tstride ) {
-	REAL *coordlast = cptr + inhcoords;
-	if( sign( *coordlast ) != s ) return 0;
-	for( REAL *coord = cptr, *tcoord = tcptr; coord != coordlast; coord++, tcoord++ ) 
-	    *tcoord = *coord / *coordlast;
-    }
-
-    return 1;
-}
-
-int
-Mapdesc::bboxTooBig( 
-    REAL *p, 
-    int	 rstride,
-    int	 cstride,
-    int	 nrows,
-    int	 ncols,
-    REAL bb[2][MAXCOORDS] )
-{
-    REAL bbpts[MAXORDER][MAXORDER][MAXCOORDS];
-    const int trstride = sizeof(bbpts[0]) / sizeof(REAL);
-    const int tcstride = sizeof(bbpts[0][0]) / sizeof(REAL); 
-
-    // points have been transformed, therefore they are homogeneous
-    // project points
-    int val = project( p, rstride, cstride, 
-	     &bbpts[0][0][0], trstride, tcstride, nrows, ncols );
-    if( val == 0 ) return -1;
-
-    // compute bounding box
-    bbox( bb, &bbpts[0][0][0], trstride, tcstride, nrows, ncols );
-
-    // find out if bounding box can't fit in unit cube
-    if( bbox_subdividing == N_BBOXROUND ) {
-	for( int k=0; k != inhcoords; k++ )
-	    if( ceilf(bb[1][k]) - floorf(bb[0][k]) > bboxsize[k] ) return 1;
-    } else {
-	for( int k=0; k != inhcoords; k++ )
-	    if( bb[1][k] - bb[0][k] > bboxsize[k] ) return 1;
-    }
-    return 0;  
-}
-
-void
-Mapdesc::bbox( 
-    REAL bb[2][MAXCOORDS], 
-    REAL *p, 
-    int	 rstride,
-    int	 cstride,
-    int	 nrows,
-    int	 ncols )
-{
-    int k;
-    for( k=0; k != inhcoords; k++ )
-	 bb[0][k] = bb[1][k] = p[k];
-
-    for( int i=0; i != nrows; i++ ) 
-	for( int j=0; j != ncols; j++ ) 
-	    for( k=0; k != inhcoords; k++ ) {
-		REAL x = p[i*rstride + j*cstride + k];
-		if(  x < bb[0][k] ) bb[0][k] = x;
-		else if( x > bb[1][k] ) bb[1][k] = x;
-	    }
-}
-
-/*--------------------------------------------------------------------------
- * calcVelocityRational - calculate upper bound on first partial derivative 
- *	of a homogeneous set of points and bounds on each row of points.
- *--------------------------------------------------------------------------
- */
-REAL
-Mapdesc::calcVelocityRational( REAL *p, int stride, int ncols )
-{
-    REAL tmp[MAXORDER][MAXCOORDS];
-
-    assert( ncols <= MAXORDER );
-
-    const int tstride = sizeof(tmp[0]) / sizeof(REAL); 
-
-    if( project( p, stride, &tmp[0][0], tstride, ncols ) ) {
-	return calcPartialVelocity( &tmp[0][0], tstride, ncols, 1, 1.0 );
-    } else { /* XXX */
-	return calcPartialVelocity( &tmp[0][0], tstride, ncols, 1, 1.0 );
-    }
-}
-
-/*--------------------------------------------------------------------------
- * calcVelocityNonrational - calculate upper bound on  first partial 
- *	derivative of a inhomogeneous set of points.
- *--------------------------------------------------------------------------
- */
-REAL
-Mapdesc::calcVelocityNonrational( REAL *pts, int stride, int ncols )
-{
-    return calcPartialVelocity( pts, stride, ncols, 1, 1.0 );
-}
-
-int
-Mapdesc::isProperty( long property )
-{
-    switch ( property ) {
-	case N_PIXEL_TOLERANCE:
-	case N_ERROR_TOLERANCE:
-	case N_CULLING:
-	case N_BBOX_SUBDIVIDING:
-	case N_S_STEPS:
-	case N_T_STEPS:
-        case N_SAMPLINGMETHOD:
-        case N_CLAMPFACTOR:
-        case N_MINSAVINGS:
-	    return 1;
-	default:
-	    return 0;
-    }
-}
-
-REAL
-Mapdesc::getProperty( long property )
-{
-    switch ( property ) {
-	case N_PIXEL_TOLERANCE:
-	    return pixel_tolerance;
-	case N_ERROR_TOLERANCE:
-	    return error_tolerance;
-	case N_CULLING:
-	    return culling_method;
-	case N_BBOX_SUBDIVIDING:
-	    return bbox_subdividing;
-	case N_S_STEPS:
-	    return s_steps;
-	case N_T_STEPS:
-	    return t_steps;
-        case N_SAMPLINGMETHOD:
-	    return sampling_method;
-        case N_CLAMPFACTOR:
-	    return clampfactor;
-        case N_MINSAVINGS:
-	    return minsavings;
-	default:
-	    abort();
-	    return -1; //not necessary, needed to shut up compiler
-    }
-}
-
-void
-Mapdesc::setProperty( long property, REAL value )
-{
-
-    switch ( property ) {
-	case N_PIXEL_TOLERANCE:
-	    pixel_tolerance = value;
-	    break;
-	case N_ERROR_TOLERANCE:
-	    error_tolerance = value;
-	    break;
-	case N_CULLING:
-	    culling_method = value;
-	    break;
-	case N_BBOX_SUBDIVIDING:
-	    if( value <= 0.0 ) value = N_NOBBOXSUBDIVISION;
-	    bbox_subdividing = value;
-	    break;
-	case N_S_STEPS:
-	    if( value < 0.0 ) value = 0.0;
-	    s_steps = value;
-	    maxrate = ( value < 0.0 ) ? 0.0 : value;
-	    maxsrate = ( value < 0.0 ) ? 0.0 : value;
-	    break;
-	case N_T_STEPS:
-	    if( value < 0.0 ) value = 0.0;
-	    t_steps = value;
-	    maxtrate = ( value < 0.0 ) ? 0.0 : value;
-	    break;
-	case N_SAMPLINGMETHOD:
-	    sampling_method = value;
-	    break;
-	case N_CLAMPFACTOR:
-	    if( value <= 0.0 ) value = N_NOCLAMPING;
-	    clampfactor = value;
-	    break;
-	case N_MINSAVINGS:
-	    if( value <= 0.0 ) value = N_NOSAVINGSSUBDIVISION;
-	    minsavings = value;
-	    break;
-	default:
-	    abort();
-	    break;
-    }
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/mapdesc.h b/src/glu/sgi/libnurbs/internals/mapdesc.h
deleted file mode 100644
index 6f06154f92a..00000000000
--- a/src/glu/sgi/libnurbs/internals/mapdesc.h
+++ /dev/null
@@ -1,271 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * mapdesc.h
- *
- */
-
-#ifndef __glumapdesc_h_
-#define __glumapdesc_h_
-
-#include "mystdio.h"
-#include "types.h"
-#include "defines.h"
-#include "bufpool.h"
-#include "nurbsconsts.h"
-
-typedef REAL Maxmatrix[MAXCOORDS][MAXCOORDS];
-
-class Backend;
-
-class Mapdesc : public PooledObj {
-    friend class Maplist;
-			
-public:
-    			Mapdesc( long, int, int, Backend & );
-    int			isProperty( long );
-    REAL		getProperty( long );
-    void		setProperty( long, REAL );
-    int			isConstantSampling( void );
-    int			isDomainSampling( void );
-    int			isRangeSampling( void );
-    int			isSampling( void );
-    int			isParametricDistanceSampling( void );
-    int			isObjectSpaceParaSampling( void );
-    int			isObjectSpacePathSampling( void );
-    int			isSurfaceAreaSampling( void );
-    int			isPathLengthSampling( void );
-    int			isCulling( void );
-    int			isBboxSubdividing( void );
-    long		getType( void );
-
-    /* curve routines */
-    void		subdivide( REAL *, REAL *, REAL, int, int );
-    int 		cullCheck( REAL *, int, int );
-    void		xformBounding( REAL *, int, int, REAL *, int );
-    void		xformCulling( REAL *, int, int, REAL *, int );
-    void		xformSampling( REAL *, int, int, REAL *, int );
-    void		xformMat( Maxmatrix, REAL *, int, int, REAL *, int );
-    REAL		calcPartialVelocity ( REAL *, int, int, int, REAL );
-    int			project( REAL *, int, REAL *, int, int );
-    REAL		calcVelocityRational( REAL *, int, int );
-    REAL		calcVelocityNonrational( REAL *, int, int );
-
-    /* surface routines */
-    void		subdivide( REAL *, REAL *, REAL, int, int, int, int );
-    int 		cullCheck( REAL *, int, int, int, int );
-    void		xformBounding( REAL *, int, int, int, int, REAL *, int, int );
-    void		xformCulling( REAL *, int, int, int, int, REAL *, int, int );
-    void		xformSampling( REAL *, int, int, int, int, REAL *, int, int );
-    void		xformMat( Maxmatrix, REAL *, int, int, int, int, REAL *, int, int );
-    REAL		calcPartialVelocity ( REAL *, REAL *, int, int, int, int, int, int, REAL, REAL, int );
-    int 		project( REAL *, int, int, REAL *, int, int, int, int);
-    void		surfbbox( REAL bb[2][MAXCOORDS] );
-
-    int			bboxTooBig( REAL *, int, int, int, int, REAL [2][MAXCOORDS] );
-    int 		xformAndCullCheck( REAL *, int, int, int, int );
-
-    void		identify( REAL[MAXCOORDS][MAXCOORDS] );
-    void		setBboxsize( INREAL *);
-    inline void 	setBmat( INREAL*, long, long );
-    inline void 	setCmat( INREAL*, long, long );
-    inline void 	setSmat( INREAL*, long, long );
-    inline int		isRational( void );
-    inline int		getNcoords( void );
-
-    REAL 		pixel_tolerance;    /* pathlength sampling tolerance */
-    REAL		error_tolerance;    /* parametric error sampling tolerance*/
-    REAL		object_space_error_tolerance;    /* object space tess*/
-    REAL 		clampfactor;
-    REAL 		minsavings;
-    REAL		maxrate;
-    REAL		maxsrate;
-    REAL		maxtrate;
-    REAL		bboxsize[MAXCOORDS];
-
-private:
-    long 		type;
-    int 		isrational;
-    int 		ncoords;
-    int 		hcoords;
-    int 		inhcoords;
-    int			mask;
-    Maxmatrix 		bmat;
-    Maxmatrix 		cmat;
-    Maxmatrix 		smat;
-    REAL 		s_steps;		/* max samples in s direction */
-    REAL 		t_steps;		/* max samples in t direction */
-    REAL 		sampling_method;	
-    REAL 		culling_method;		/* check for culling */
-    REAL		bbox_subdividing;
-    Mapdesc *		next;
-    Backend &		backend;
-
-    void		bbox( REAL [2][MAXCOORDS], REAL *, int, int, int, int );
-    REAL		maxDifference( int, REAL *, int );
-    static void 	copy( Maxmatrix, long, INREAL *, long, long );
-
-    /* individual control point routines */
-    static void		transform4d( float[4], float[4], float[4][4] );
-    static void		multmatrix4d ( float[4][4], const float[4][4],
-					 const float[4][4] );
-    void		copyPt( REAL *, REAL * );
-    void		sumPt( REAL *, REAL *, REAL *, REAL, REAL );
-    void		xformSampling( REAL *, REAL * );
-    void		xformCulling( REAL *, REAL * );
-    void		xformRational( Maxmatrix, REAL *, REAL * );
-    void		xformNonrational( Maxmatrix, REAL *, REAL * );
-    unsigned int	clipbits( REAL * );
-};
-
-inline void
-Mapdesc::setBmat( INREAL *mat, long rstride, long cstride )
-{
-    copy( bmat, hcoords, mat, rstride, cstride );
-}
-
-inline void
-Mapdesc::setCmat( INREAL *mat, long rstride, long cstride )
-{
-    copy( cmat, hcoords, mat, rstride, cstride );
-}
-
-inline void
-Mapdesc::setSmat( INREAL *mat, long rstride, long cstride )
-{
-    copy( smat, hcoords, mat, rstride, cstride );
-}
-
-inline long
-Mapdesc::getType( void )
-{
-    return type;
-}
-
-inline void
-Mapdesc::xformCulling( REAL *d, REAL *s )
-{
-    if( isrational )
-        xformRational( cmat, d, s );
-    else
-	xformNonrational( cmat, d, s );
-}
-
-inline void
-Mapdesc::xformSampling( REAL *d, REAL *s )
-{
-    if( isrational )
-        xformRational( smat, d, s );
-    else
-	xformNonrational( smat, d, s );
-}
-
-inline int 
-Mapdesc::isRational( void )
-{
-    return isrational ? 1 : 0;
-}
-
-inline int		
-Mapdesc::getNcoords( void ) 
-{
-    return ncoords; 
-}
-
-inline int			
-Mapdesc::isConstantSampling( void ) 
-{
-    return ((sampling_method == N_FIXEDRATE) ? 1 : 0); 
-}
-
-inline int			
-Mapdesc::isDomainSampling( void ) 
-{ 
-    return ((sampling_method == N_DOMAINDISTANCE) ? 1 : 0); 
-}
-
-inline int			
-Mapdesc::isParametricDistanceSampling( void ) 
-{
-    return ((sampling_method == N_PARAMETRICDISTANCE) ? 1 : 0);
-}
-
-inline int			
-Mapdesc::isObjectSpaceParaSampling( void ) 
-{
-    return ((sampling_method == N_OBJECTSPACE_PARA) ? 1 : 0);
-}
-
-inline int			
-Mapdesc::isObjectSpacePathSampling( void ) 
-{
-    return ((sampling_method == N_OBJECTSPACE_PATH) ? 1 : 0);
-}
-
-inline int			
-Mapdesc::isSurfaceAreaSampling( void ) 
-{
-    return ((sampling_method == N_SURFACEAREA) ? 1 : 0);
-}
-
-inline int			
-Mapdesc::isPathLengthSampling( void ) 
-{
-    return ((sampling_method == N_PATHLENGTH) ? 1 : 0);
-}
-
-inline int			
-Mapdesc::isRangeSampling( void ) 
-{
-    return ( isParametricDistanceSampling() || isPathLengthSampling() ||
-	    isSurfaceAreaSampling() ||
-	    isObjectSpaceParaSampling() ||
-	    isObjectSpacePathSampling());
-}
-
-inline int
-Mapdesc::isSampling( void )
-{
-    return isRangeSampling() || isConstantSampling() || isDomainSampling();
-}
-
-inline int			
-Mapdesc::isCulling( void ) 
-{
-    return ((culling_method != N_NOCULLING) ? 1 : 0);
-}
-
-inline int			
-Mapdesc::isBboxSubdividing( void ) 
-{
-    return ((bbox_subdividing != N_NOBBOXSUBDIVISION) ? 1 : 0);
-}
-#endif /* __glumapdesc_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/mapdescv.cc b/src/glu/sgi/libnurbs/internals/mapdescv.cc
deleted file mode 100644
index 35b38b141b7..00000000000
--- a/src/glu/sgi/libnurbs/internals/mapdescv.cc
+++ /dev/null
@@ -1,243 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * mapdescv.c++
- *
- */
-
-#include "glimports.h"
-#include "mystdio.h"
-#include "myassert.h"
-#include "mystring.h"
-#include "mymath.h"
-#include "nurbsconsts.h"
-#include "mapdesc.h"
-
-/*--------------------------------------------------------------------------
- * calcPartialVelocity - calculate maximum magnitude of a given partial
- * derivative
- *--------------------------------------------------------------------------
- */
-REAL
-Mapdesc::calcPartialVelocity (
-    REAL *p,
-    int	 stride,
-    int	 ncols,
-    int  partial,
-    REAL range )
-{
-    REAL tmp[MAXORDER][MAXCOORDS];
-    REAL mag[MAXORDER];
-
-    assert( ncols <= MAXORDER );
-
-    int j, k, t;
-    // copy inhomogeneous control points into temporary array
-    for( j=0; j != ncols; j++ ) 
-	for( k=0; k != inhcoords; k++ )
-	    tmp[j][k] = p[j*stride + k];
-
-    for( t=0; t != partial; t++ ) 
-	for( j=0; j != ncols-t-1; j++ ) 
-	    for( k=0; k != inhcoords; k++ ) 
-		tmp[j][k] = tmp[j+1][k] - tmp[j][k];
-
-    // compute magnitude and store in mag array
-    for( j=0; j != ncols-partial; j++ ) {
-	mag[j] = 0.0;
-	for( k=0; k != inhcoords; k++ )
-	    mag[j] += tmp[j][k] * tmp[j][k];
-    }
-
-    // compute scale factor
-    REAL fac = 1;
-    REAL invt = 1.0 / range;
-    for( t = ncols-1; t != ncols-1-partial; t-- ) 
-	fac *= t * invt;
-
-    // compute max magnitude of all entries in array
-    REAL max = 0.0;
-    for( j=0; j != ncols-partial; j++ )
-	if( mag[j] > max ) max = mag[j];
-    max = fac * sqrtf( (float) max );
-
-    return max;
-}
-
-/*--------------------------------------------------------------------------
- * calcPartialVelocity - calculate maximum magnitude of a given partial
- * derivative
- *--------------------------------------------------------------------------
- */
-REAL
-Mapdesc::calcPartialVelocity (
-    REAL *dist,
-    REAL *p,
-    int	 rstride,
-    int	 cstride,
-    int	 nrows,
-    int	 ncols,
-    int  spartial,
-    int  tpartial,
-    REAL srange, 
-    REAL trange,
-    int  side )
-{
-    REAL tmp[MAXORDER][MAXORDER][MAXCOORDS];
-    REAL mag[MAXORDER][MAXORDER];
-
-    assert( nrows <= MAXORDER );
-    assert( ncols <= MAXORDER );
-
-    REAL *tp = &tmp[0][0][0];
-    REAL *mp = &mag[0][0];
-    const int istride = sizeof( tmp[0]) / sizeof( tmp[0][0][0] );
-    const int jstride = sizeof( tmp[0][0]) / sizeof( tmp[0][0][0] );
-    /*
-    const int kstride = sizeof( tmp[0][0][0]) / sizeof( tmp[0][0][0] );
-    */
-    const int mistride = sizeof( mag[0]) / sizeof( mag[0][0] );
-    const int mjstride = sizeof( mag[0][0]) / sizeof( mag[0][0] );
-    const int idist = nrows * istride;
-    const int jdist = ncols * jstride;
-    /*
-    const int kdist = inhcoords * kstride;
-    */
-    const int id = idist - spartial * istride;
-    const int jd = jdist - tpartial * jstride;
-
-    {
-	// copy control points
-	REAL *ti = tp;
-	REAL *qi = p;
-	REAL *til = tp + idist;
-	for( ; ti != til; ) {
-	    REAL *tj = ti;
-	    REAL *qj = qi;
-	    REAL *tjl = ti + jdist;
-	    for( ; tj != tjl;  ) {
-		for( int k=0; k != inhcoords; k++ ) {
-		    tj[k] = qj[k];
-		}
-		tj += jstride;
-		qj += cstride;
-	    }
-	    ti += istride;
-	    qi += rstride; 
-	}
-    }
-
-    {
-        // compute (s)-partial derivative control points
-	REAL *til = tp + idist - istride;
-	const REAL *till = til - ( spartial * istride );
-	for( ; til != till; til -= istride )
-	    for( REAL *ti = tp; ti != til; ti += istride )
-		for( REAL *tj = ti, *tjl = tj + jdist; tj != tjl; tj += jstride )
-		    for( int k=0; k != inhcoords; k++ )
-			tj[k] = tj[k+istride] - tj[k];
-    }
-
-    {
-        // compute (s,t)-partial derivative control points
-	REAL *tjl = tp + jdist - jstride;
-	const REAL *tjll = tjl - ( tpartial * jstride );
-	for( ; tjl != tjll; tjl -= jstride )
-	    for( REAL *tj = tp; tj != tjl; tj += jstride )
-		for( REAL *ti = tj, *til = ti + id; ti != til; ti += istride )
-		    for( int k=0; k != inhcoords; k++ ) 
-			ti[k] = ti[k+jstride] - ti[k];
-
-    }
-
-    REAL max = 0.0;
-    {
-	// compute magnitude and store in mag array
-	memset( (void *) mp, 0, sizeof( mag ) );
-	for( REAL *ti = tp, *mi = mp, *til = tp + id; ti != til; ti += istride, mi += mistride )
-	    for( REAL *tj = ti, *mj = mi, *tjl = ti + jd; tj != tjl; tj += jstride, mj += mjstride ) {
-		for( int k=0; k != inhcoords; k++ )
-		   *mj += tj[k] * tj[k];
-		if( *mj > max ) max = *mj;
-	    }
-
-    }
-
-    int i, j;
-
-    // compute scale factor
-    REAL fac = 1.0;
-    {
-	REAL invs = 1.0 / srange;
-	REAL invt = 1.0 / trange;
-	for( int s = nrows-1, slast = s-spartial; s != slast; s-- ) 
-	    fac *= s * invs;
-	for( int t = ncols-1, tlast = t-tpartial; t != tlast; t-- ) 
-	    fac *= t * invt;
-    }
-
-    if( side == 0 ) {
-	// compute max magnitude of first and last column
-	dist[0] = 0.0;
-	dist[1] = 0.0;
-	for( i=0; i != nrows-spartial; i++ ) {
-	    j = 0;
-	    if( mag[i][j] > dist[0] ) dist[0] = mag[i][j];
-    
-	    j = ncols-tpartial-1;
-	    if( mag[i][j] > dist[1] ) dist[1] = mag[i][j];
-	}
-	dist[0] = fac * sqrtf( dist[0] );
-	dist[1] = fac * sqrtf( dist[1] );
-    } else if( side == 1 ) {
-	// compute max magnitude of first and last row
-	dist[0] = 0.0;
-	dist[1] = 0.0;
-	for( j=0; j != ncols-tpartial; j++ ) {
-	    i = 0;
-	    if( mag[i][j] > dist[0] ) dist[0] = mag[i][j];
-    
-	    i = nrows-spartial-1;
-	    if( mag[i][j] > dist[1] ) dist[1] = mag[i][j];
-	}
-	dist[0] = fac * sqrtf( dist[0] );
-	dist[1] = fac * sqrtf( dist[1] );
-    }
-
-    max = fac * sqrtf( (float) max );
-
-    return max;
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/maplist.cc b/src/glu/sgi/libnurbs/internals/maplist.cc
deleted file mode 100644
index e51a3e85d0c..00000000000
--- a/src/glu/sgi/libnurbs/internals/maplist.cc
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * maplist.c++
- *
- */
-
-#include "glimports.h"
-#include "mystdio.h"
-#include "myassert.h"
-#include "mymath.h"
-#include "nurbsconsts.h"
-#include "maplist.h"
-#include "mapdesc.h"
- 
-Maplist::Maplist( Backend& b )
-    : mapdescPool( sizeof( Mapdesc ), 10, "mapdesc pool" ),
-      backend( b )
-{
-    maps = 0; lastmap = &maps;
-}
-
-void 
-Maplist::initialize( void )
-{
-    freeMaps();
-    define( N_P2D, 0, 2 );
-    define( N_P2DR, 1, 3 );
-}
-
-void 
-Maplist::add( long type, int israt, int ncoords )
-{
-    *lastmap = new(mapdescPool) Mapdesc( type, israt, ncoords, backend );
-    lastmap = &((*lastmap)->next);
-}
-
-void 
-Maplist::define( long type, int israt, int ncoords )
-{
-#ifndef NDEBUG // to avoid warning
-    Mapdesc *m = locate( type );
-    assert( m == NULL || ( m->isrational == israt && m->ncoords == ncoords ) );
-#endif
-    add( type, israt, ncoords );
-}
-
-void 
-Maplist::remove( Mapdesc *m )
-{
-    for( Mapdesc **curmap = &maps; *curmap; curmap = &((*curmap)->next) ) {
-	if( *curmap == m ) {
-	    *curmap = m->next;
-	    m->deleteMe( mapdescPool );
-	    return;
-	}
-    }
-    abort();
-}
-
-void
-Maplist::freeMaps( void )
-{
-    mapdescPool.clear();
-    maps = 0;
-    lastmap = &maps;
-}
-
-Mapdesc * 
-Maplist::find( long type )
-{
-    Mapdesc *val = locate( type );
-    assert( val != 0 );
-    return val;
-}
-
-Mapdesc * 
-Maplist::locate( long type )
-{
-    Mapdesc *m;
-    for( m = maps; m; m = m->next )
-	if( m->getType() == type ) break;
-    return m;
-}
diff --git a/src/glu/sgi/libnurbs/internals/maplist.h b/src/glu/sgi/libnurbs/internals/maplist.h
deleted file mode 100644
index 49720e49b42..00000000000
--- a/src/glu/sgi/libnurbs/internals/maplist.h
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * maplist.h
- *
- */
-
-#ifndef __glumaplist_h_
-#define __glumaplist_h_
-
-#include "types.h"
-#include "defines.h"
-#include "bufpool.h"
-
-class Backend;
-class Mapdesc;
-
-class Maplist {
-public:
-			Maplist( Backend & );
-    void 		define( long, int, int );
-    inline void 	undefine( long );
-    inline int		isMap( long );
-
-    void 		initialize( void );
-    Mapdesc * 		find( long );
-    Mapdesc * 		locate( long );
-
-private:
-    Pool		mapdescPool;
-    Mapdesc *		maps;
-    Mapdesc **		lastmap;
-    Backend &		backend;
-
-    void 		add( long, int, int );
-    void 		remove( Mapdesc * );
-    void		freeMaps( void );
-};
-
-inline int
-Maplist::isMap( long type )
-{
-    return (locate( type ) ? 1 : 0);
-}
-
-inline void 
-Maplist::undefine( long type )
-{
-    Mapdesc *m = locate( type );
-    assert( m != 0 );
-    remove( m );
-}
-#endif /* __glumaplist_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/mesher.cc b/src/glu/sgi/libnurbs/internals/mesher.cc
deleted file mode 100644
index b2d83f41288..00000000000
--- a/src/glu/sgi/libnurbs/internals/mesher.cc
+++ /dev/null
@@ -1,489 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * mesher.c++
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "mystdio.h"
-#include "gridvertex.h"
-#include "gridtrimvertex.h"
-#include "jarcloc.h"
-#include "gridline.h"
-#include "trimline.h"
-#include "uarray.h"
-#include "backend.h"
-#include "mesher.h"
-
-
-const float Mesher::ZERO = 0.0;
-
-Mesher::Mesher( Backend& b ) 
-	: backend( b ), 
-	p( sizeof( GridTrimVertex ), 100, "GridTrimVertexPool" )
-{
-    stacksize = 0;
-    vdata = 0;
-    last[0] = 0;
-    last[1] = 0;
-    itop = 0;
-    lastedge = 0; //needed to prevent purify UMR 
-}
-
-Mesher::~Mesher( void )
-{
-    if( vdata ) delete[] vdata;
-}
-
-void 
-Mesher::init( unsigned int npts )
-{
-    p.clear();
-    if( stacksize < npts ) {
-	stacksize = 2 * npts;
-	if( vdata ) delete[] vdata;		
-	vdata = new GridTrimVertex_p[stacksize];
-    } 
-}
-
-inline void
-Mesher::push( GridTrimVertex *gt )
-{
-    assert( itop+1 != (int)stacksize );
-    vdata[++itop] = gt;
-}
-
-inline void
-Mesher::pop( long )
-{
-}
-
-inline void
-Mesher::openMesh()
-{
-    backend.bgntmesh( "addedge" );
-}
-
-inline void
-Mesher::closeMesh()
-{
-    backend.endtmesh();
-}
-
-inline void
-Mesher::swapMesh()
-{
-    backend.swaptmesh();
-}
-
-inline void
-Mesher::clearStack()
-{
-    itop = -1;
-    last[0] = 0;
-}
-
-void
-Mesher::finishLower( GridTrimVertex *gtlower )
-{
-    for( push(gtlower); 
-	 nextlower( gtlower=new(p) GridTrimVertex ); 
-	 push(gtlower) ) 
-	    addLower();
-    addLast();
-}
-
-void
-Mesher::finishUpper( GridTrimVertex *gtupper )
-{
-    for( push(gtupper); 
-	 nextupper( gtupper=new(p) GridTrimVertex ); 
-	 push(gtupper) ) 
-	    addUpper();
-    addLast();
-}
-
-void
-Mesher::mesh( void )
-{
-    GridTrimVertex *gtlower, *gtupper;
-
-    Hull::init( );
-    nextupper( gtupper = new(p) GridTrimVertex );
-    nextlower( gtlower = new(p) GridTrimVertex );
-
-    clearStack();
-    openMesh();
-    push(gtupper);
-
-    nextupper( gtupper = new(p) GridTrimVertex );
-    nextlower( gtlower );
-
-    assert( gtupper->t && gtlower->t );
-    
-    if( gtupper->t->param[0] < gtlower->t->param[0] ) {
-	push(gtupper);
-	lastedge = 1;
-	if( nextupper( gtupper=new(p) GridTrimVertex ) == 0 ) {
-	    finishLower(gtlower);
-	    return;
-	}
-    } else if( gtupper->t->param[0] > gtlower->t->param[0] ) {
-	push(gtlower);
-	lastedge = 0;
-	if( nextlower( gtlower=new(p) GridTrimVertex ) == 0 ) {
-	    finishUpper(gtupper);
-	    return;
-	}
-    } else {
-	if( lastedge == 0 ) {
-	    push(gtupper);
-	    lastedge = 1;
-	    if( nextupper(gtupper=new(p) GridTrimVertex) == 0 ) {
-		finishLower(gtlower);
-		return;
-	    }
-	} else {
-	    push(gtlower);
-	    lastedge = 0;
-	    if( nextlower( gtlower=new(p) GridTrimVertex ) == 0 ) {
-		finishUpper(gtupper);
-		return;
-	    }
-	}
-    }
-
-    while ( 1 ) {
-	if( gtupper->t->param[0] < gtlower->t->param[0] ) {
-            push(gtupper);
-	    addUpper();
-	    if( nextupper( gtupper=new(p) GridTrimVertex ) == 0 ) {
-		finishLower(gtlower);
-		return;
-	    }
-	} else if( gtupper->t->param[0] > gtlower->t->param[0] ) {
-    	    push(gtlower);
-	    addLower();
-	    if( nextlower( gtlower=new(p) GridTrimVertex ) == 0 ) {
-		finishUpper(gtupper);
-		return;
-	    }
-	} else {
-	    if( lastedge == 0 ) {
-		push(gtupper);
-		addUpper();
-		if( nextupper( gtupper=new(p) GridTrimVertex ) == 0 ) {
-		    finishLower(gtlower);
-		    return;
-		}
-	    } else {
-		push(gtlower);
-		addLower();
-		if( nextlower( gtlower=new(p) GridTrimVertex ) == 0 ) {
-		    finishUpper(gtupper);
-		    return;
-		}
-	    }
-	}
-    }
-}
-
-inline int
-Mesher::isCcw( int ilast )
-{
-    REAL area = det3( vdata[ilast]->t, vdata[itop-1]->t, vdata[itop-2]->t );
-    return (area < ZERO) ? 0 : 1;
-}
-
-inline int
-Mesher::isCw( int ilast  )
-{
-    REAL area = det3( vdata[ilast]->t, vdata[itop-1]->t, vdata[itop-2]->t );
-    return (area > -ZERO) ? 0 : 1;
-}
-
-inline int
-Mesher::equal( int x, int y )
-{
-    return( last[0] == vdata[x] && last[1] == vdata[y] );
-}
-
-inline void
-Mesher::copy( int x, int y )
-{
-    last[0] = vdata[x]; last[1] = vdata[y];
-}
- 
-inline void
-Mesher::move( int x, int y ) 
-{
-    vdata[x] = vdata[y];
-}
-
-inline void
-Mesher::output( int x )
-{
-    backend.tmeshvert( vdata[x] );
-}
-
-/*---------------------------------------------------------------------------
- * addedge - addedge an edge to the triangulation
- *
- *	This code has been re-written to generate large triangle meshes
- *	from a monotone polygon.  Although smaller triangle meshes
- *	could be generated faster and with less code, larger meshes
- *	actually give better SYSTEM performance.  This is because
- *	vertices are processed in the backend slower than they are
- *	generated by this code and any decrease in the number of vertices
- *	results in a decrease in the time spent in the backend.
- *---------------------------------------------------------------------------
- */
-
-void
-Mesher::addLast( )
-{
-    register int ilast = itop;
-
-    if( lastedge == 0 ) {
-	if( equal( 0, 1 ) ) {
-	    output( ilast );
-	    swapMesh();
-	    for( register int i = 2; i < ilast; i++ ) {
-		swapMesh();
-		output( i );
-	    }
-	    copy( ilast, ilast-1 );
-	} else if( equal( ilast-2, ilast-1) ) {
-	    swapMesh();
-	    output( ilast );
-	    for( register int i = ilast-3; i >= 0; i-- ) {
-		output( i );
-		swapMesh();
-	    }
-	    copy( 0, ilast );
-	} else {
-	    closeMesh();	openMesh();
-	    output( ilast );
-	    output( 0 );
-	    for( register int i = 1; i < ilast; i++ ) {
-		swapMesh();
-		output( i );
-	    }
-	    copy( ilast, ilast-1 );
-	}
-    } else {
-	if( equal( 1, 0) ) {
-	    swapMesh();
-	    output( ilast );
-	    for( register int i = 2; i < ilast; i++ ) {
-		output( i );
-		swapMesh();
-	    }
-	    copy( ilast-1, ilast );
-	} else if( equal( ilast-1, ilast-2) ) {
-	    output( ilast );
-	    swapMesh();
-	    for( register int i = ilast-3; i >= 0; i-- ) {
-		swapMesh();
-		output( i );
-	    }
-	    copy( ilast, 0 );
-	} else {
-	    closeMesh();	openMesh();
-	    output( 0 );
-	    output( ilast );
-	    for( register int i = 1; i < ilast; i++ ) {
-		output( i );
-		swapMesh();
-	    }
-	    copy( ilast-1, ilast );
-	}
-    }
-    closeMesh();
-    //for( register long k=0; k<=ilast; k++ ) pop( k );
-}
-
-void
-Mesher::addUpper( )
-{
-    register int ilast = itop;
-
-    if( lastedge == 0 ) {
-	if( equal( 0, 1 ) ) {
-	    output( ilast );
-	    swapMesh();
-	    for( register int i = 2; i < ilast; i++ ) {
-		swapMesh();
-		output( i );
-	    }
-	    copy( ilast, ilast-1 );
-	} else if( equal( ilast-2, ilast-1) ) {
-	    swapMesh();
-	    output( ilast );
-	    for( register int i = ilast-3; i >= 0; i-- ) {
-		output( i );
-		swapMesh();
-	    }
-	    copy( 0, ilast );
-	} else {
-	    closeMesh();	openMesh();
-	    output( ilast );
-	    output( 0 );
-	    for( register int i = 1; i < ilast; i++ ) {
-		swapMesh();
-		output( i );
-	    }
-	    copy( ilast, ilast-1 );
-	}
-	lastedge = 1;
-        //for( register long k=0; k<ilast-1; k++ ) pop( k );
-	move( 0, ilast-1 );
-	move( 1, ilast );
-	itop = 1;
-    } else {
-	if( ! isCcw( ilast ) ) return;
-	do {
-	    itop--;
-	} while( (itop > 1) && isCcw( ilast ) );
-
-	if( equal( ilast-1, ilast-2 ) ) {
-	    output( ilast );
-	    swapMesh();
-	    for( register int i=ilast-3; i>=itop-1; i-- ) {
-		swapMesh();
-		output( i );
-	    }
-	    copy( ilast, itop-1 );
-	} else if( equal( itop, itop-1 ) ) {
-	    swapMesh();
-	    output( ilast );
-	    for( register int i = itop+1; i < ilast; i++ ) {
-		output( i );
-		swapMesh();
-	    }
-	    copy( ilast-1, ilast );
-	} else {
-	    closeMesh();	openMesh();
-	    output( ilast );
-	    output( ilast-1 );
-	    for( register int i=ilast-2; i>=itop-1; i-- ) {
-		swapMesh();
-		output( i );
-	    } 
-	    copy( ilast, itop-1 );
-	}
-        //for( register int k=itop; k<ilast; k++ ) pop( k );
-	move( itop, ilast );
-    }
-}
-
-void
-Mesher::addLower()
-{
-    register int ilast = itop;
-
-    if( lastedge == 1 ) {
-	if( equal( 1, 0) ) {
-	    swapMesh();
-	    output( ilast );
-	    for( register int i = 2; i < ilast; i++ ) {
-		output( i );
-		swapMesh();
-	    }
-	    copy( ilast-1, ilast );
-	} else if( equal( ilast-1, ilast-2) ) {
-	    output( ilast );
-	    swapMesh();
-	    for( register int i = ilast-3; i >= 0; i-- ) {
-		swapMesh();
-		output( i );
-	    }
-	    copy( ilast, 0 );
-	} else {
-	    closeMesh();	openMesh();
-	    output( 0 );
-	    output( ilast );
-	    for( register int i = 1; i < ilast; i++ ) {
-		output( i );
-		swapMesh();
-	    }
-	    copy( ilast-1, ilast );
-	}
-
-	lastedge = 0;
-        //for( register long k=0; k<ilast-1; k++ ) pop( k );
-	move( 0, ilast-1 );
-	move( 1, ilast );
-	itop = 1;
-    } else {
-	if( ! isCw( ilast ) ) return;
-	do {
-	    itop--;
-	} while( (itop > 1) && isCw( ilast ) );
-
-	if( equal( ilast-2, ilast-1) ) {
-	    swapMesh();
-	    output( ilast );
-	    for( register int i=ilast-3; i>=itop-1; i--) {
-		output( i );
-		swapMesh( );
-	    }
-	    copy( itop-1, ilast );
-	} else if( equal( itop-1, itop) ) {
-	    output( ilast );
-	    swapMesh();
-	    for( register int i=itop+1; i<ilast; i++ ) {
-		swapMesh( );
-		output( i );
-	    }
-	    copy( ilast, ilast-1 );
-	} else {
-	    closeMesh();	openMesh();
-	    output( ilast-1 );
-	    output( ilast );
-	    for( register int i=ilast-2; i>=itop-1; i-- ) {
-		output( i );
-		swapMesh( );
-	    }
-	    copy( itop-1, ilast );
-	}
-        //for( register int k=itop; k<ilast; k++ ) pop( k );
-	move( itop, ilast );
-    }
-}
-
-
diff --git a/src/glu/sgi/libnurbs/internals/mesher.h b/src/glu/sgi/libnurbs/internals/mesher.h
deleted file mode 100644
index bb65d0f1c7d..00000000000
--- a/src/glu/sgi/libnurbs/internals/mesher.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * mesher.h
- *
- */
-
-#ifndef __glumesher_h_
-#define __glumesher_h_
-
-#include "hull.h"
-
-class TrimRegion;
-class Backend;
-class Pool;
-// struct GridTrimVertex;
-
-
-class Mesher : virtual public TrimRegion, public Hull {
-public:
-     			Mesher( Backend & );
-			~Mesher( void );
-    void		init( unsigned int );
-    void		mesh( void );
-
-private:
-    static const float	ZERO;
-    Backend&		backend;
-
-    Pool		p;
-    unsigned int	stacksize;
-    GridTrimVertex **	vdata;
-    GridTrimVertex *	last[2];
-    int			itop;
-    int			lastedge;
-
-    inline void		openMesh( void );
-    inline void		swapMesh( void );
-    inline void		closeMesh( void );
-    inline int		isCcw( int );
-    inline int		isCw( int );
-    inline void		clearStack( void );
-    inline void		push( GridTrimVertex * );
-    inline void		pop( long );
-    inline void		move( int, int );
-    inline int 		equal( int, int );
-    inline void 	copy( int, int );
-    inline void 	output( int );
-    void		addUpper( void );
-    void		addLower( void );
-    void		addLast( void );
-    void		finishUpper( GridTrimVertex * );
-    void		finishLower( GridTrimVertex * );
-};
-#endif /* __glumesher_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/monoTriangulationBackend.cc b/src/glu/sgi/libnurbs/internals/monoTriangulationBackend.cc
deleted file mode 100644
index 2830cc743ca..00000000000
--- a/src/glu/sgi/libnurbs/internals/monoTriangulationBackend.cc
+++ /dev/null
@@ -1,397 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-** 
-** http://oss.sgi.com/projects/FreeB
-** 
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-** 
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-** 
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-**
-*/
-/*
-*/
-
-#include "monoTriangulation.h"
-#include "polyUtil.h"
-#include "backend.h"
-#include "arc.h"
-
-void reflexChain::outputFan(Real v[2], Backend* backend)
-{
-  Int i;
-  /*
-  TrimVertex trimVert;
-  */
-  backend->bgntfan();
-
-  /*
-  trimVert.param[0]=v[0];
-  trimVert.param[1]=v[1];
-  backend->tmeshvert(&trimVert);
-  */
-  backend->tmeshvert(v[0], v[1]);
-
-  if(isIncreasing) {
-    for(i=0; i<index_queue; i++)
-      {
-	/*
-	trimVert.param[0]=queue[i][0];
-	trimVert.param[1]=queue[i][1];
-	backend->tmeshvert(&trimVert);
-	*/
-	backend->tmeshvert(queue[i][0], queue[i][1]);
-      }
-  }
-  else {
-    for(i=index_queue-1; i>=0; i--)
-      {
-	/*
-	trimVert.param[0]=queue[i][0];
-	trimVert.param[1]=queue[i][1];
-	backend->tmeshvert(&trimVert);
-	*/
-	backend->tmeshvert(queue[i][0], queue[i][1]);
-      }
-  }
-  backend->endtfan();
-}
-
-void reflexChain::processNewVertex(Real v[2], Backend* backend)
-{
-  Int i,j,k;
-  Int isReflex;
-  /*TrimVertex trimVert;*/
-  /*if there are at most one vertex in the queue, then simply insert
-   */
-  if(index_queue <=1){
-    insert(v);
-    return;
-  }
-  
-  /*there are at least two vertices in the queue*/
-  j=index_queue-1;
-  
-  for(i=j; i>=1; i--) {
-    if(isIncreasing) {
-      isReflex = (area(queue[i-1], queue[i], v) <= 0.0);
-    }
-    else /*decreasing*/{
-      isReflex = (area(v, queue[i], queue[i-1]) <= 0.0);	  
-    }
-    if(isReflex) {
-      break;
-    }
-  }
-
-  /*
-   *if i<j then vertices: i+1--j are convex
-   * output triangle fan: 
-   *  v, and queue[i], i+1, ..., j
-   */
-  if(i<j) 
-    {
-      backend->bgntfan();
-      /*
-      trimVert.param[0]=v[0];
-      trimVert.param[1]=v[1];
-      backend->tmeshvert(& trimVert);
-      */
-      backend->tmeshvert(v[0], v[1]);
-
-      if(isIncreasing) {
-	for(k=i; k<=j; k++)
-	  {
-	    /*
-	    trimVert.param[0]=queue[k][0];
-	    trimVert.param[1]=queue[k][1];
-	    backend->tmeshvert(& trimVert);
-	    */
-	    backend->tmeshvert(queue[k][0], queue[k][1]);
-	  }
-      }
-      else {
-	for(k=j; k>=i; k--)
-	  {
-	    /*
-	    trimVert.param[0]=queue[k][0];
-	    trimVert.param[1]=queue[k][1];
-	    backend->tmeshvert(& trimVert);
-	    */
-	    backend->tmeshvert(queue[k][0], queue[k][1]);
-	  }
-      }
-      
-      backend->endtfan();
-    }
-
-  /*delete vertices i+1--j from the queue*/
-  index_queue = i+1;
-  /*finally insert v at the end of the queue*/
-  insert(v);
-
-}
-
-
-void monoTriangulationRec(Real* topVertex, Real* botVertex, 
-			  vertexArray* inc_chain, Int inc_current,
-			  vertexArray* dec_chain, Int dec_current,
-			  Backend* backend)
-{
-  assert( inc_chain != NULL && dec_chain != NULL);
-  assert( ! (inc_current>=inc_chain->getNumElements() &&
-	     dec_current>=dec_chain->getNumElements()));
-  Int inc_nVertices;
-  Int dec_nVertices;
-  Real** inc_array ;
-  Real** dec_array ;
-  Int i;
-  assert( ! ( (inc_chain==NULL) && (dec_chain==NULL)));
-
-  if(inc_current>=inc_chain->getNumElements()) /*no more vertices on inc_chain*/
-    {
-
-      dec_array = dec_chain->getArray();
-      dec_nVertices = dec_chain->getNumElements();      
-      reflexChain rChain(20,0);
-      /*put the top vertex into the reflex chain*/
-      rChain.processNewVertex(topVertex, backend);
-      /*process all the vertices on the dec_chain*/
-      for(i=dec_current; i<dec_nVertices; i++){
-	rChain.processNewVertex(dec_array[i], backend);
-      }
-      /*process the bottom vertex*/
-      rChain.processNewVertex(botVertex, backend);
-
-    }
-  else if(dec_current>= dec_chain->getNumElements()) /*no more vertices on dec_chain*/
-    {
-      inc_array = inc_chain->getArray();
-      inc_nVertices= inc_chain->getNumElements();
-      reflexChain rChain(20,1);
-      /*put the top vertex into the reflex chain*/
-      rChain.processNewVertex(topVertex, backend);
-      /*process all the vertices on the inc_chain*/
-      for(i=inc_current; i<inc_nVertices; i++){
-	rChain.processNewVertex(inc_array[i], backend);
-      }
-      /*process the bottom vertex*/
-      rChain.processNewVertex(botVertex, backend);
-    }
-  else /*neither chain is empty*/
-    {
-      inc_array = inc_chain -> getArray();
-      dec_array = dec_chain -> getArray();
-      inc_nVertices= inc_chain->getNumElements();
-      dec_nVertices= dec_chain->getNumElements();
-      /*if top of inc_chain is 'lower' than top of dec_chain, process all the 
-       *vertices on the dec_chain which are higher than top of inc_chain
-       */
-      if(compV2InY(inc_array[inc_current], dec_array[dec_current]) <= 0)
-	{
-
-	  reflexChain rChain(20, 0);
-	  rChain.processNewVertex(topVertex, backend);
-	  for(i=dec_current; i<dec_nVertices; i++)
-	    {
-	      if(compV2InY(inc_array[inc_current], dec_array[i]) <= 0)
-		rChain.processNewVertex(dec_array[i], backend);
-	      else 
-		break;
-	    }
-	  rChain.outputFan(inc_array[inc_current], backend);
-	  monoTriangulationRec(dec_array[i-1], botVertex, 
-			       inc_chain, inc_current,
-			       dec_chain, i,
-			       backend);
-	}
-      else /*compV2InY(inc_array[inc_current], dec_array[dec_current]) > 0*/
-	{
-
-	  reflexChain rChain(20, 1);
-	  rChain.processNewVertex(topVertex, backend);
-	  for(i=inc_current; i<inc_nVertices; i++)
-	    {
-	      if(compV2InY(inc_array[i], dec_array[dec_current]) >0)		
-		rChain.processNewVertex(inc_array[i], backend);	      
-	      else
-		break;
-	    }
-	  rChain.outputFan(dec_array[dec_current], backend);
-	  monoTriangulationRec(inc_array[i-1], botVertex, 
-			       inc_chain, i,
-			       dec_chain, dec_current,
-			       backend);
-	}
-    }/*end case neither is empty*/
-}
-
-
-void monoTriangulationFunBackend(Arc_ptr loop, Int (*compFun)(Real*, Real*), Backend* backend)
-{
-  Int i;
-  /*find the top vertex, bottom vertex, inccreasing chain, and decreasing chain,
-   *then call monoTriangulationRec
-   */
-  Arc_ptr tempV;
-  Arc_ptr topV;
-  Arc_ptr botV;
-  topV = botV = loop;
-  for(tempV = loop->next; tempV != loop; tempV = tempV->next)
-    {
-      if(compFun(topV->tail(), tempV->tail())<0) {
-	topV = tempV;
-      }
-      if(compFun(botV->tail(), tempV->tail())>0) {
-	botV = tempV;
-      }
-    }
-
-  /*creat increase and decrease chains*/
-  vertexArray inc_chain(20); /*this is a dynamic array*/
-  for(i=1; i<=topV->pwlArc->npts-2; i++) { /*the first vertex is the top vertex which doesn't belong to inc_chain*/
-    inc_chain.appendVertex(topV->pwlArc->pts[i].param);
-  }
-  for(tempV = topV->next; tempV != botV; tempV = tempV->next)
-    {
-      for(i=0; i<=tempV->pwlArc->npts-2; i++){
-	inc_chain.appendVertex(tempV->pwlArc->pts[i].param);
-      }
-    }
-  
-  vertexArray dec_chain(20);
-  for(tempV = topV->prev; tempV != botV; tempV = tempV->prev)
-    {
-      for(i=tempV->pwlArc->npts-2; i>=0; i--){
-	dec_chain.appendVertex(tempV->pwlArc->pts[i].param);
-      }
-    }
-  for(i=botV->pwlArc->npts-2; i>=1; i--){ 
-    dec_chain.appendVertex(tempV->pwlArc->pts[i].param);
-  }
-  
-  monoTriangulationRecFunBackend(topV->tail(), botV->tail(), &inc_chain, 0, &dec_chain, 0, compFun, backend);
-
-}  
-
-/*if compFun == compV2InY, top to bottom: V-monotone
- *if compFun == compV2InX, right to left: U-monotone
- */
-void monoTriangulationRecFunBackend(Real* topVertex, Real* botVertex, 
-			  vertexArray* inc_chain, Int inc_current,
-			  vertexArray* dec_chain, Int dec_current,
-			  Int  (*compFun)(Real*, Real*),
-			  Backend* backend)
-{
-  assert( inc_chain != NULL && dec_chain != NULL);
-  assert( ! (inc_current>=inc_chain->getNumElements() &&
-	     dec_current>=dec_chain->getNumElements()));
-  Int inc_nVertices;
-  Int dec_nVertices;
-  Real** inc_array ;
-  Real** dec_array ;
-  Int i;
-  assert( ! ( (inc_chain==NULL) && (dec_chain==NULL)));
-
-  if(inc_current>=inc_chain->getNumElements()) /*no more vertices on inc_chain*/
-    {
-
-      dec_array = dec_chain->getArray();
-      dec_nVertices = dec_chain->getNumElements();      
-      reflexChain rChain(20,0);
-      /*put the top vertex into the reflex chain*/
-      rChain.processNewVertex(topVertex, backend);
-      /*process all the vertices on the dec_chain*/
-      for(i=dec_current; i<dec_nVertices; i++){
-	rChain.processNewVertex(dec_array[i], backend);
-      }
-      /*process the bottom vertex*/
-      rChain.processNewVertex(botVertex, backend);
-
-    }
-  else if(dec_current>= dec_chain->getNumElements()) /*no more vertices on dec_chain*/
-    {
-      inc_array = inc_chain->getArray();
-      inc_nVertices= inc_chain->getNumElements();
-      reflexChain rChain(20,1);
-      /*put the top vertex into the reflex chain*/
-      rChain.processNewVertex(topVertex, backend);
-      /*process all the vertices on the inc_chain*/
-      for(i=inc_current; i<inc_nVertices; i++){
-	rChain.processNewVertex(inc_array[i], backend);
-      }
-      /*process the bottom vertex*/
-      rChain.processNewVertex(botVertex, backend);
-    }
-  else /*neither chain is empty*/
-    {
-      inc_array = inc_chain -> getArray();
-      dec_array = dec_chain -> getArray();
-      inc_nVertices= inc_chain->getNumElements();
-      dec_nVertices= dec_chain->getNumElements();
-      /*if top of inc_chain is 'lower' than top of dec_chain, process all the 
-       *vertices on the dec_chain which are higher than top of inc_chain
-       */
-      if(compFun(inc_array[inc_current], dec_array[dec_current]) <= 0)
-	{
-
-	  reflexChain rChain(20, 0);
-	  rChain.processNewVertex(topVertex, backend);
-	  for(i=dec_current; i<dec_nVertices; i++)
-	    {
-	      if(compFun(inc_array[inc_current], dec_array[i]) <= 0)
-		rChain.processNewVertex(dec_array[i], backend);
-	      else 
-		break;
-	    }
-	  rChain.outputFan(inc_array[inc_current], backend);
-	  monoTriangulationRecFunBackend(dec_array[i-1], botVertex, 
-			       inc_chain, inc_current,
-			       dec_chain, i,
-			       compFun,
-			       backend);
-	}
-      else /*compFun(inc_array[inc_current], dec_array[dec_current]) > 0*/
-	{
-
-	  reflexChain rChain(20, 1);
-	  rChain.processNewVertex(topVertex, backend);
-	  for(i=inc_current; i<inc_nVertices; i++)
-	    {
-	      if(compFun(inc_array[i], dec_array[dec_current]) >0)		
-		rChain.processNewVertex(inc_array[i], backend);	      
-	      else
-		break;
-	    }
-	  rChain.outputFan(dec_array[dec_current], backend);
-	  monoTriangulationRecFunBackend(inc_array[i-1], botVertex, 
-			       inc_chain, i,
-			       dec_chain, dec_current,
-			       compFun,
-			       backend);
-	}
-    }/*end case neither is empty*/
-}
diff --git a/src/glu/sgi/libnurbs/internals/monotonizer.cc b/src/glu/sgi/libnurbs/internals/monotonizer.cc
deleted file mode 100644
index 5845d310bad..00000000000
--- a/src/glu/sgi/libnurbs/internals/monotonizer.cc
+++ /dev/null
@@ -1,260 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * monotonizer.c++
- *
- */
-
-#include "glimports.h"
-#include "mystdio.h"
-#include "myassert.h"
-#include "arc.h"
-#include "arctess.h"
-#include "bezierarc.h"
-#include "bin.h"
-#include "mapdesc.h"
-#include "nurbsconsts.h"
-#include "subdivider.h"
-
-/*-----------------------------------------------------------------------------
- * Subdivider::decompose - break all curves into monotone arcs
- *-----------------------------------------------------------------------------
- */
-int
-Subdivider::decompose( Bin& bin, REAL geo_stepsize )
-{
-    Arc_ptr jarc;
-    for( jarc=bin.firstarc(); jarc; jarc=bin.nextarc() ) {
-	if( ! jarc->isTessellated() ) {
-	    /* points have not been transformed, therefore they may be either
-	       homogeneous or inhomogeneous */
-	    tessellate( jarc, geo_stepsize );
-	    if( jarc->isDisconnected() || jarc->next->isDisconnected() ) 
-		return 1;
-	}
-    }
-
-    for( jarc=bin.firstarc(); jarc; jarc=bin.nextarc() ) {
-	monotonize( jarc, bin );
-    }
-
-#ifndef NDEBUG
-    for( jarc=bin.firstarc(); jarc; jarc=bin.nextarc() ) {
-	assert( isMonotone( jarc ) != 0 );
-    }
-#endif
-
-    return 0;
-}
-
-void
-Subdivider::tessellate( Arc_ptr jarc, REAL geo_stepsize )
-{
-    BezierArc *b = jarc->bezierArc;
-    Mapdesc *mapdesc = b->mapdesc;
-
-    if( mapdesc->isRational() ) {
-	REAL max = mapdesc->calcVelocityRational( b->cpts, b->stride, b->order );
-	REAL arc_stepsize = (max > 1.0) ? (1.0/max) : 1.0; 
-	if( jarc->bezierArc->order != 2 )
-	    arctessellator.tessellateNonlinear( jarc, geo_stepsize, arc_stepsize, 1 );
-	else {
-	    arctessellator.tessellateLinear( jarc, geo_stepsize, arc_stepsize, 1 );
-	}
-    } else { 
-	REAL max = mapdesc->calcVelocityNonrational( b->cpts, b->stride, b->order );
-	REAL arc_stepsize = (max > 1.0) ? (1.0/max) : 1.0; 
-	if( jarc->bezierArc->order != 2 )
-	    arctessellator.tessellateNonlinear( jarc, geo_stepsize, arc_stepsize, 0 );
-	else {
-	    arctessellator.tessellateLinear( jarc, geo_stepsize, arc_stepsize, 0 );
-	}
-    }
-}
-
-/*-------------------------------------------------------------------------
- * Subdivider::monotonize - break up a jordan arc into s,t-monotone
- *	components.  This code will remove degenerate segments, including
- *	arcs of only a single point.
- *-------------------------------------------------------------------------
- */
-void
-Subdivider::monotonize( Arc_ptr jarc, Bin& bin )
-{
-    TrimVertex  *firstvert = jarc->pwlArc->pts;
-    TrimVertex  *lastvert = firstvert + (jarc->pwlArc->npts - 1);
-    long	uid = jarc->nuid;
-    arc_side	side = jarc->getside();
-    dir		sdir = none;
-    dir		tdir = none;
-    int 	degenerate = 1;
-
-    int		nudegenerate;
-    int		change;
-
-    TrimVertex *vert;
-    for( vert = firstvert; vert != lastvert; vert++ ) {
-
-        nudegenerate = 1;
-        change = 0;
-
-	/* check change relative to s axis, clear degenerate bit if needed */
-        REAL sdiff = vert[1].param[0] - vert[0].param[0]; 
-        if( sdiff == 0 ) {
-	    if( sdir != same ) {
-	        sdir = same;
-		change = 1;
-	    }
-        } else if( sdiff < 0.0 ) {
-	    if( sdir != down ) {
-	        sdir = down;
-		change = 1;
-	    }
-	    nudegenerate = 0;
-        } else {
-	    if( sdir != up ) {
-	        sdir = up;
-		change = 1;
-	    }
-	    nudegenerate = 0;
-        }
-    
-	/* check change relative to t axis, clear degenerate bit if needed */
-        REAL tdiff = vert[1].param[1] - vert[0].param[1]; 
-        if( tdiff == 0 ) { 
-	    if( tdir != same ) {
-	        tdir = same;
-	 	change = 1;
-	    }
-        } else if( tdiff < 0.0 ) {
-	    if( tdir != down ) {
-	        tdir = down;
-		change = 1;
-	    }
-	    nudegenerate = 0;
-        } else {
-	    if( tdir != up ) {
-	        tdir = up;
-		change = 1;
-	    }
-	    nudegenerate = 0;
-        }
-    
-	if( change ) {
-	    if( ! degenerate ) {
-	        /* make last segment into separate pwl curve */
-	        jarc->pwlArc->npts = vert - firstvert + 1;
-	        jarc = (new(arcpool) Arc( side, uid ))->append( jarc );
-	        jarc->pwlArc = new(pwlarcpool) PwlArc();
-		bin.addarc( jarc );
-	    }
-	    firstvert = jarc->pwlArc->pts = vert;
-	    degenerate = nudegenerate;
-	} 
-    }
-    jarc->pwlArc->npts = vert - firstvert + 1;
-
-    if( degenerate ) {
-	/* remove jarc from circularly linked list */
-	jarc->prev->next = jarc->next;
-	jarc->next->prev = jarc->prev;
-
-        assert( jarc->prev->check(  ) != 0 );
-        assert( jarc->next->check(  ) != 0 );
-
-	/* remove jarc from bin */
-	bin.remove_this_arc( jarc  );
-
-	jarc->pwlArc->deleteMe( pwlarcpool ); jarc->pwlArc = 0;
-	jarc->deleteMe( arcpool );
-    } 
-}
-
-/*-------------------------------------------------------------------------
- * Subdivider::isMonotone - return true if arc is monotone AND non-degenerate
- *-------------------------------------------------------------------------
- */
-int
-Subdivider::isMonotone( Arc_ptr jarc )
-{
-    TrimVertex  *firstvert = jarc->pwlArc->pts;
-    TrimVertex  *lastvert = firstvert + (jarc->pwlArc->npts - 1);
-
-    if( firstvert == lastvert ) return 1;
-
-    TrimVertex	*vert = firstvert;
-    enum dir	sdir;
-    enum dir	tdir;
-
-    REAL diff = vert[1].param[0] - vert[0].param[0]; 
-    if( diff == 0.0 ) 
-        sdir = same;
-    else if( diff < 0.0 )
-        sdir = down;
-    else
-        sdir = up;
-
-    diff = vert[1].param[1] - vert[0].param[1]; 
-    if( diff == 0.0 ) 
-        tdir = same;
-    else if( diff < 0.0 )
-        tdir = down;
-    else
-        tdir = up;
-
-    if( (sdir == same) && (tdir == same) ) return 0;
-    
-    for( ++vert ; vert != lastvert; vert++ ) {
-        diff = vert[1].param[0] - vert[0].param[0]; 
-        if( diff == 0.0 ) {
-	    if( sdir != same ) return 0;
-        } else if( diff < 0.0 ) {
-	    if( sdir != down ) return 0;
-        } else {
-	    if( sdir != up ) return 0;
-        }
-
-        diff = vert[1].param[1] - vert[0].param[1]; 
-        if( diff == 0.0 ) {
-	    if( tdir != same ) return 0;
-        } else if( diff < 0.0 ) {
-	    if( tdir != down ) return 0;
-        } else {
-	    if( tdir != up ) return 0;
-        }
-    }
-    return 1;
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/monotonizer.h b/src/glu/sgi/libnurbs/internals/monotonizer.h
deleted file mode 100644
index e951084ff03..00000000000
--- a/src/glu/sgi/libnurbs/internals/monotonizer.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * monotonizer.h
- *
- */
-
-#ifndef __glumonotonizer_h_
-#define __glumonotonizer_h_
-
-#include "mysetjmp.h"
-#include "types.h"
-
-class Arc;
-class ArcTessellator;
-class Pool;
-class Bin;
-class PwlArcPool;
-class Mapdesc;
-
-class Monotonizer {
-    ArcTessellator&	arctessellator;
-    Pool&		arcpool;
-    Pool&		pwlarcpool;
-    jmp_buf&		nurbsJmpBuf;
-
-    enum dir 		{ down, same, up, none };
-    void		tessellate( Arc *, REAL );
-    void		monotonize( Arc *, Bin & );
-    int			isMonotone( Arc * );
-public:
-    			Monotonizer( ArcTessellator& at, Pool& ap, Pool& p, jmp_buf& j ) 
-				: arctessellator(at), arcpool(ap), pwlarcpool(p), nurbsJmpBuf(j) {}
-    int			decompose( Bin &, REAL );
-};
-#endif /* __glumonotonizer_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/myassert.h b/src/glu/sgi/libnurbs/internals/myassert.h
deleted file mode 100644
index cbd6006f55c..00000000000
--- a/src/glu/sgi/libnurbs/internals/myassert.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * myassert.h
- *
- */
-
-#ifndef __glumyassert_h_
-#define __glumyassert_h_
-
-#ifdef STANDALONE
-#define assert(EX) ((void)0)
-#endif
-
-#ifdef LIBRARYBUILD
-#include <assert.h>
-#endif
-
-#ifdef GLBUILD
-#define assert(EX) ((void)0)
-#endif
-
-#endif /* __glumyassert_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/mycode.cc b/src/glu/sgi/libnurbs/internals/mycode.cc
deleted file mode 100644
index 3625cacd74f..00000000000
--- a/src/glu/sgi/libnurbs/internals/mycode.cc
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-** 
-** http://oss.sgi.com/projects/FreeB
-** 
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-** 
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-** 
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-**
-*/
-/*
-*/
-
-#include "mymath.h"
-
-#ifdef NEEDCEILF
-
-float ceilf( float x )
-{
-   if( x < 0 ) {
-	float nx = -x;
-	int ix = (int) nx;
-	return (float) -ix;
-   } else {
-	int ix = (int) x;
-	if( x == (float) ix ) return x;
-	return (float) (ix+1);
-   }
-}
-
-float floorf( float x )
-{
-   if( x < 0 ) {
-	float nx = -x;
-	int ix = (int) nx;
-	if( nx == (float) ix ) return x;
-	return (float) -(ix+1);
-   } else {
-	int ix = (int) x;
-	return (float) ix;
-   }
-}
-#endif
diff --git a/src/glu/sgi/libnurbs/internals/mymath.h b/src/glu/sgi/libnurbs/internals/mymath.h
deleted file mode 100644
index 17ef7237fe2..00000000000
--- a/src/glu/sgi/libnurbs/internals/mymath.h
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * mymath.h
- *
- */
-
-#ifndef __glumymath_h_
-#define __glumymath_h_
-
-#ifdef GLBUILD
-#define sqrtf		gl_fsqrt
-#endif
-
-#if defined(GLBUILD) || defined(STANDALONE)
-#define M_SQRT2		1.41421356237309504880
-#define ceilf		myceilf
-#define floorf		myfloorf	
-#define sqrtf		sqrt
-extern "C" double	sqrt(double);
-extern "C" float	ceilf(float);
-extern "C" float	floorf(float);
-#define NEEDCEILF
-#endif
-
-#ifdef LIBRARYBUILD
-#include <math.h>
-#endif
-
-#if !defined sqrtf
-#    define sqrtf(x)    ((float)sqrt(x))
-#endif
-#if !defined ceilf
-#    define ceilf(x)    ((float)ceil(x))
-#endif
-#if !defined floorf
-#    define floorf(x)   ((float)floor(x))
-#endif
-
-#endif /* __glumymath_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/mysetjmp.h b/src/glu/sgi/libnurbs/internals/mysetjmp.h
deleted file mode 100644
index 2a3f6a87b3a..00000000000
--- a/src/glu/sgi/libnurbs/internals/mysetjmp.h
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * mysetjmp.h
- *
- */
-
-#ifndef __glumysetjmp_h_
-#define __glumysetjmp_h_
-
-#ifdef STANDALONE
-struct JumpBuffer;
-extern "C" JumpBuffer *newJumpbuffer( void );
-extern "C" void deleteJumpbuffer(JumpBuffer *);
-extern "C" void mylongjmp( JumpBuffer *, int );
-extern "C" int mysetjmp( JumpBuffer * );
-#endif
-
-#ifdef GLBUILD
-#define setjmp		gl_setjmp
-#define longjmp 	gl_longjmp
-#endif
-
-#if defined(LIBRARYBUILD) || defined(GLBUILD)
-#include <setjmp.h>
-#include <stdlib.h>
-
-struct JumpBuffer {
-    jmp_buf	buf;
-};
-
-inline JumpBuffer *
-newJumpbuffer( void )
-{
-    return (JumpBuffer *) malloc( sizeof( JumpBuffer ) );
-}
-
-inline void
-deleteJumpbuffer(JumpBuffer *jb)
-{
-   free( (void *) jb);
-}
-
-inline void
-mylongjmp( JumpBuffer *j, int code ) 
-{
-    ::longjmp( j->buf, code );
-}
-
-inline int
-mysetjmp( JumpBuffer *j )
-{
-    return setjmp( j->buf );
-}
-#endif
-
-#endif /* __glumysetjmp_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/mystring.h b/src/glu/sgi/libnurbs/internals/mystring.h
deleted file mode 100644
index d2952da894e..00000000000
--- a/src/glu/sgi/libnurbs/internals/mystring.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * mystring.h
- *
- */
-
-#ifndef __glumystring_h_
-#define __glumystring_h_
-
-#ifdef STANDALONE
-typedef unsigned int size_t;
-extern "C" void *	memcpy(void *, const void *, size_t);
-extern "C" void *	memset(void *, int, size_t);
-#endif
-
-#ifdef GLBUILD
-#define memcpy(a,b,c)	bcopy(b,a,c)
-#define memset(a,b,c)	bzero(a,c)
-extern "C" void		bcopy(const void *, void *, int);
-extern "C" void		bzero(void *, int);
-#endif
-
-#ifdef LIBRARYBUILD
-#include <string.h>
-#endif
-
-#endif /* __glumystring_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/nurbsconsts.h b/src/glu/sgi/libnurbs/internals/nurbsconsts.h
deleted file mode 100644
index acc5d7f31f6..00000000000
--- a/src/glu/sgi/libnurbs/internals/nurbsconsts.h
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * nurbsconsts.h
- *
- */
-
-#ifndef __glunurbsconsts_h_
-#define __glunurbsconsts_h_
-
-/* NURBS Properties - one set per map, 
-   each takes a single INREAL arg */
-#define N_SAMPLING_TOLERANCE  	1
-#define N_S_RATE		6
-#define N_T_RATE		7
-#define N_CLAMPFACTOR		13
-#define 	N_NOCLAMPING		0.0
-#define N_MINSAVINGS		14
-#define 	N_NOSAVINGSSUBDIVISION	0.0
-
-/* NURBS Properties - one set per map, 
-   each takes an enumerated value */
-#define N_CULLING		2
-#define 	N_NOCULLING		0.0
-#define 	N_CULLINGON		1.0
-#define N_SAMPLINGMETHOD	10
-#define 	N_NOSAMPLING		0.0
-#define 	N_FIXEDRATE		3.0
-#define 	N_DOMAINDISTANCE	2.0
-#define 	N_PARAMETRICDISTANCE	5.0
-#define 	N_PATHLENGTH		6.0
-#define 	N_SURFACEAREA		7.0
-#define         N_OBJECTSPACE_PARA           8.0
-#define         N_OBJECTSPACE_PATH           9.0
-#define N_BBOX_SUBDIVIDING	17
-#define 	N_NOBBOXSUBDIVISION	0.0
-#define 	N_BBOXTIGHT		1.0
-#define 	N_BBOXROUND		2.0
-
-/* NURBS Rendering Properties - one set per renderer
-   each takes an enumerated value */
-#define N_DISPLAY		3
-#define 	N_FILL			1.0 	
-#define 	N_OUTLINE_POLY		2.0
-#define 	N_OUTLINE_TRI		3.0
-#define 	N_OUTLINE_QUAD	 	4.0
-#define 	N_OUTLINE_PATCH		5.0
-#define 	N_OUTLINE_PARAM		6.0
-#define 	N_OUTLINE_PARAM_S	7.0
-#define 	N_OUTLINE_PARAM_ST 	8.0
-#define 	N_OUTLINE_SUBDIV 	9.0
-#define 	N_OUTLINE_SUBDIV_S 	10.0
-#define 	N_OUTLINE_SUBDIV_ST 	11.0
-#define 	N_ISOLINE_S		12.0
-#define N_ERRORCHECKING		4
-#define 	N_NOMSG			0.0
-#define 	N_MSG			1.0
-
-/* GL 4.0 propeties not defined above */
-#ifndef N_PIXEL_TOLERANCE
-#define N_PIXEL_TOLERANCE	N_SAMPLING_TOLERANCE
-#define N_ERROR_TOLERANCE	20
-#define N_SUBDIVISIONS		5
-#define N_TILES			8
-#define N_TMP1			9
-#define N_TMP2			N_SAMPLINGMETHOD
-#define N_TMP3			11
-#define N_TMP4			12
-#define N_TMP5			N_CLAMPFACTOR
-#define N_TMP6			N_MINSAVINGS
-#define N_S_STEPS		N_S_RATE
-#define N_T_STEPS		N_T_RATE
-#endif
-
-/* NURBS Rendering Properties - one set per map,
-   each takes an INREAL matrix argument */
-#define N_CULLINGMATRIX		1
-#define N_SAMPLINGMATRIX	2
-#define N_BBOXMATRIX		3
-
-
-/* NURBS Rendering Properties - one set per map,
-   each takes an INREAL vector argument */
-#define	N_BBOXSIZE		4
-
-/* type argument for trimming curves */
-#ifndef N_P2D
-#define N_P2D 	 		0x8	
-#define N_P2DR 	 		0xd
-#endif	
-
-#endif /* __glunurbsconsts_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/nurbsinterfac.cc b/src/glu/sgi/libnurbs/internals/nurbsinterfac.cc
deleted file mode 100644
index 520bd419ea2..00000000000
--- a/src/glu/sgi/libnurbs/internals/nurbsinterfac.cc
+++ /dev/null
@@ -1,537 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * nurbsinterfac.c++
- *
- */
-
-#include "glimports.h"
-#include "mystdio.h"
-#include "nurbsconsts.h"
-#include "nurbstess.h"
-#include "bufpool.h"
-#include "quilt.h"
-#include "displaylist.h"
-#include "knotvector.h"
-#include "mapdesc.h"
-
-#define THREAD( work, arg, cleanup ) \
-	if( dl ) {\
-	    arg->save = 1;\
-	    dl->append( (PFVS)&NurbsTessellator::work, (void *) arg, (PFVS)&NurbsTessellator::cleanup );\
- 	} else {\
-	    arg->save = 0;\
-	    work( arg );\
-	}
-
-#define THREAD2( work ) \
-	if( dl ) {\
-	    dl->append( (PFVS)&NurbsTessellator::work, 0, 0 );\
- 	} else {\
-	    work( );\
-	}
-
-NurbsTessellator::NurbsTessellator( BasicCurveEvaluator &c, BasicSurfaceEvaluator& e) 
-	: maplist( backend ),
-	  backend( c, e ),
-          subdivider( renderhints, backend ),
-	  o_pwlcurvePool( sizeof( O_pwlcurve ), 32, "o_pwlcurvePool" ),
-	  o_nurbscurvePool( sizeof( O_nurbscurve ), 32, "o_nurbscurvePool"),
-	  o_curvePool( sizeof( O_curve ), 32,  "o_curvePool" ),
-	  o_trimPool( sizeof( O_trim ), 32,  "o_trimPool" ),
-	  o_surfacePool( sizeof( O_surface ), 1, "o_surfacePool" ),
-	  o_nurbssurfacePool( sizeof( O_nurbssurface ), 4, "o_nurbssurfacePool" ),
-	  propertyPool( sizeof( Property ), 32, "propertyPool" ),
-          quiltPool( sizeof( Quilt  ), 32, "quiltPool" )
-{
-    dl		= 0;
-    inSurface	= 0;
-    inCurve	= 0;
-    inTrim	= 0;
-    playBack	= 0;
-    jumpbuffer  = newJumpbuffer();
-    subdivider.setJumpbuffer( jumpbuffer );
-}
-
-NurbsTessellator::~NurbsTessellator( void ) 
-{
-    if( inTrim ) {
-	do_nurbserror( 12 );
-	endtrim();
-    }
-
-    if( inSurface ) {
-        *nextNurbssurface = 0;
-        do_freeall();
-    }
-
-    if (jumpbuffer) {
-        deleteJumpbuffer(jumpbuffer);
-	jumpbuffer= 0;
-    }	
-}
-
-/*-----------------------------------------------------------------------------
- * bgnsurface - allocate and initialize an o_surface structure
- *
- * Client: GL user
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::bgnsurface( long nuid )
-{
-    O_surface *o_surface = new(o_surfacePool) O_surface;
-    o_surface->nuid = nuid;
-    THREAD( do_bgnsurface, o_surface, do_freebgnsurface );
-}
-
-/*-----------------------------------------------------------------------------
- * bgncurve - allocate an initialize an o_curve structure
- * 
- * Client: GL user
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::bgncurve( long nuid )
-{
-    O_curve *o_curve = new(o_curvePool) O_curve;
-    o_curve->nuid = nuid;
-    THREAD( do_bgncurve, o_curve, do_freebgncurve );
-}
-/*-----------------------------------------------------------------------------
- * endcurve -
- * 
- * Client:
- *-----------------------------------------------------------------------------
- */
-
-void
-NurbsTessellator::endcurve( void )
-{
-    THREAD2( do_endcurve );
-}
-
-/*-----------------------------------------------------------------------------
- * endsurface - user level end of surface call
- *
- * Client: GL user
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::endsurface( void )
-{
-    THREAD2( do_endsurface );
-}
-
-
-/*-----------------------------------------------------------------------------
- * bgntrim - allocate and initialize a new trim loop structure (o_trim )
- *
- * Client: GL user
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::bgntrim( void )
-{
-    O_trim *o_trim = new(o_trimPool) O_trim;
-    THREAD( do_bgntrim, o_trim, do_freebgntrim );
-}
-
-/*-----------------------------------------------------------------------------
- * endtrim -
- *
- * Client: GL user
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::endtrim( void )
-{
-    THREAD2( do_endtrim );
-}
-
-
-/*-----------------------------------------------------------------------------
- * pwlcurve -
- *
- *      count        - number of points on curve
- *      array        - array of points on curve
- *      byte_stride  - distance between points in bytes
- *      type         - valid data flag
- *
- * Client: Gl user
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::pwlcurve( long count, INREAL array[], long byte_stride, long type )
-{
-    Mapdesc *mapdesc = maplist.locate( type );
-
-    if( mapdesc == 0 ) {
-	do_nurbserror( 35 );
-	isDataValid = 0;
-	return;
-    }
-
-    if ( (type != N_P2D) && (type != N_P2DR) ) {
-	do_nurbserror( 22 );
-	isDataValid = 0;
-	return;
-    }
-    if( count < 0 ) {
-	do_nurbserror( 33 );
-	isDataValid = 0;
-	return;
-    }
-    if( byte_stride < 0 ) {
-	do_nurbserror( 34 );
-	isDataValid = 0;
-	return;
-    }
-
-#ifdef NOTDEF
-    if( mapdesc->isRational() ) {
-	INREAL *p = array;
-	INREAL x = p[0]; INREAL y = p[1]; INREAL w = p[2];
-	p = (INREAL *) (((char *) p) + byte_stride);
-	for( long i = 1; i != count; i++ ) {
-	    if( p[0] == x && p[1] == y && p[2] == w ) break;
-	    x = p[0]; y = p[1]; w = p[2];
-	    p = (INREAL *) (((char *) p) + byte_stride);
-	}
-	if( i != count ) {
-	    do_nurbserror( 37 );
-	    _glu_dprintf( "point %d (%f,%f)\n", i, x, y );
-	    isDataValid = 0;
-	    return;
-	}
-    } else {
-	INREAL *p = array;
-	INREAL x = p[0]; INREAL y = p[1];
-	p = (INREAL *) (((char *) p) + byte_stride);
-	for( long i = 1; i != count; i++ ) {
-	    if( p[0] == x && p[1] == y ) break;
-	    x = p[0]; y = p[1];
-	    p = (INREAL *) (((char *) p) + byte_stride);
-	}
-	if( i != count ) {
-	    do_nurbserror( 37 );
-	    _glu_dprintf( "point %d (%f,%f)\n", i, x, y );
-	    isDataValid = 0;
-	    return;
-	}
-    }
-#endif
-
-    O_pwlcurve	*o_pwlcurve = new(o_pwlcurvePool) O_pwlcurve( type, count, array, byte_stride, extTrimVertexPool.get((int)count) );
-    THREAD( do_pwlcurve, o_pwlcurve, do_freepwlcurve );
-}
-
-
-/*-----------------------------------------------------------------------------
- * nurbscurve -
- *
- * Client: GL user
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::nurbscurve(
-    long nknots, 		/* number of p knots */
-    INREAL knot[], 		/* nondecreasing knot values in p */
-    long byte_stride,		/* distance in bytes between control points */
-    INREAL ctlarray[], 		/* pointer to first control point */
-    long order,			/* order of spline */
-    long type )			/* description of range space */
-{
-
-    Mapdesc *mapdesc = maplist.locate( type );
-
-    if( mapdesc == 0 ) {
-	do_nurbserror( 35 );
-	isDataValid = 0;
-	return;
-    }
-
-    if( ctlarray == 0 ) {
-	do_nurbserror( 36 );
-	isDataValid = 0;
-	return;
-    }
-
-    if( byte_stride < 0 ) {
-	do_nurbserror( 34 );
-	isDataValid = 0;
-	return;
-    }
-
-    Knotvector knots;
-
-    knots.init( nknots, byte_stride, order, knot );
-    if( do_check_knots( &knots, "curve" ) ) return;
-    
-    O_nurbscurve *o_nurbscurve = new(o_nurbscurvePool) O_nurbscurve(type);
-    o_nurbscurve->bezier_curves = new(quiltPool) Quilt(mapdesc);
-    o_nurbscurve->bezier_curves->toBezier( knots,ctlarray, mapdesc->getNcoords() );
- 
-    THREAD( do_nurbscurve, o_nurbscurve, do_freenurbscurve );
-}
-
-
-/*-----------------------------------------------------------------------------
- * nurbssurface -
- *
- * Client: User routine
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::nurbssurface(
-    long sknot_count,		/* number of s knots */
-    INREAL sknot[],		/* nondecreasing knot values in s */
-    long tknot_count, 		/* number of t knots */
-    INREAL tknot[],		/* nondecreasing knot values in t */
-    long s_byte_stride,		/* s step size in memory bytes */
-    long t_byte_stride,		/* t step size in memory bytes */
-    INREAL ctlarray[],		/* pointer to first control point */
-    long sorder,		/* order of the spline in s parameter */
-    long torder,		/* order of the spline in t parameter */
-    long type)			/* description of range space */
-{ 
-    Mapdesc *mapdesc = maplist.locate( type );
-
-    if( mapdesc == 0 ) {
-	do_nurbserror( 35 );
-	isDataValid = 0;
-	return;
-    }
-
-    if( s_byte_stride < 0 ) {
-	do_nurbserror( 34 );
-	isDataValid = 0;
-	return;
-    }
-
-    if( t_byte_stride < 0 ) {
-	do_nurbserror( 34 );
-	isDataValid = 0;
-	return;
-    }
-
-    Knotvector sknotvector, tknotvector;
-
-    sknotvector.init( sknot_count, s_byte_stride, sorder, sknot );
-    if( do_check_knots( &sknotvector, "surface" ) ) return;
-
-    tknotvector.init( tknot_count, t_byte_stride, torder, tknot );
-    if( do_check_knots( &tknotvector, "surface" ) ) return;
-
-    O_nurbssurface *o_nurbssurface = new(o_nurbssurfacePool) O_nurbssurface(type);
-    o_nurbssurface->bezier_patches = new(quiltPool) Quilt(mapdesc);
-
-    o_nurbssurface->bezier_patches->toBezier( sknotvector, tknotvector,
-	ctlarray, mapdesc->getNcoords() ); 
-    THREAD( do_nurbssurface, o_nurbssurface, do_freenurbssurface );
-}
-
-
-/*-----------------------------------------------------------------------------
- * setnurbsproperty -
- * 
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::setnurbsproperty( long tag, INREAL value )
-{
-    if( ! renderhints.isProperty( tag ) ) {
-	do_nurbserror( 26 );
-    } else {
-	Property *prop = new(propertyPool) Property( tag, value );
-	THREAD( do_setnurbsproperty, prop, do_freenurbsproperty );
-    }
-}
-
-/*-----------------------------------------------------------------------------
- * setnurbsproperty -
- * 
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::setnurbsproperty( long type, long tag, INREAL value )
-{
-    Mapdesc *mapdesc = maplist.locate( type );
-
-    if( mapdesc == 0 ) {
-	do_nurbserror( 35 );
-	return;
-    }
-
-    if( ! mapdesc->isProperty( tag ) ) {
-	do_nurbserror( 26 );
-	return;
-    }
-
-    Property *prop = new(propertyPool) Property( type, tag, value );
-    THREAD( do_setnurbsproperty2, prop, do_freenurbsproperty );
-}
-
-
-/*-----------------------------------------------------------------------------
- * getnurbsproperty - 
- * 
- *-----------------------------------------------------------------------------
- */
-
-void
-NurbsTessellator::getnurbsproperty( long tag, INREAL *value )
-{
-    if( renderhints.isProperty( tag ) ) {
-	*value = renderhints.getProperty( tag );
-    } else {
-	do_nurbserror( 26 );
-    }
-}
-
-/*-----------------------------------------------------------------------------
- * getnurbsproperty - 
- * 
- *-----------------------------------------------------------------------------
- */
-
-void
-NurbsTessellator::getnurbsproperty( long type, long tag, INREAL *value )
-{
-    Mapdesc *mapdesc = maplist.locate( type );
-
-    if( mapdesc == 0 ) 
-	do_nurbserror( 35 );
-
-    if( mapdesc->isProperty( tag  ) ) {
-	*value = mapdesc->getProperty( tag );
-    } else {
-	do_nurbserror( 26 );
-    }
-}
-
-/*--------------------------------------------------------------------------
- * setnurbsproperty - accept a user supplied matrix as culling or sampling mat
- *--------------------------------------------------------------------------
- */
-
-void 
-NurbsTessellator::setnurbsproperty( long type, long purpose, INREAL *mat )
-{
-    // XXX - cannot be put in display list
-    Mapdesc *mapdesc = maplist.locate( type );
-
-    if( mapdesc == 0 ) {
-	do_nurbserror( 35 );
-	isDataValid = 0;
-    } else if( purpose == N_BBOXSIZE ) {
-	mapdesc->setBboxsize( mat );
-    } else {
-#ifndef NDEBUG
-        _glu_dprintf( "ERRORRORRORR!!!\n");
-#endif
-    }
-}
-
-/*--------------------------------------------------------------------------
- * setnurbsproperty - accept a user supplied matrix as culling or sampling mat
- *--------------------------------------------------------------------------
- */
-
-void 
-NurbsTessellator::setnurbsproperty( long type, long purpose, INREAL *mat, 
-    long rstride, long cstride )
-{
-    // XXX - cannot be put in display list
-    Mapdesc *mapdesc = maplist.locate( type );
-
-    if( mapdesc == 0 ) {
-	do_nurbserror( 35 );
-	isDataValid = 0;
-    } else if( purpose == N_CULLINGMATRIX ) {
-	mapdesc->setCmat( mat, rstride, cstride );
-    } else if( purpose == N_SAMPLINGMATRIX ) {
-	mapdesc->setSmat( mat, rstride, cstride );
-    } else if( purpose == N_BBOXMATRIX ) {
-	mapdesc->setBmat( mat, rstride, cstride );
-    } else {
-#ifndef NDEBUG
-        _glu_dprintf( "ERRORRORRORR!!!\n");
-#endif
-    }
-}
-
-void	
-NurbsTessellator::redefineMaps( void )
-{
-    maplist.initialize();
-}
-
-void 	
-NurbsTessellator::defineMap( long type, long rational, long ncoords )
-{
-    maplist.define( type, (int) rational, (int) ncoords );
-}
-
-void 
-NurbsTessellator::discardRecording( void *_dl )
-{
-    delete (DisplayList *) _dl;
-}
-
-void * 
-NurbsTessellator::beginRecording( void )
-{
-    dl = new DisplayList( this );
-    return (void *) dl;
-}
-
-void 
-NurbsTessellator::endRecording( void )
-{
-    dl->endList();
-    dl = 0;
-}
-
-void 
-NurbsTessellator::playRecording( void *_dl )
-{
-    playBack = 1;
-    bgnrender();
-    ((DisplayList *)_dl)->play();
-    endrender();
-    playBack = 0;
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/nurbstess.cc b/src/glu/sgi/libnurbs/internals/nurbstess.cc
deleted file mode 100644
index e477a8c8334..00000000000
--- a/src/glu/sgi/libnurbs/internals/nurbstess.cc
+++ /dev/null
@@ -1,691 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * nurbstess.c++
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "mysetjmp.h"
-#include "mystdio.h"
-#include "nurbsconsts.h"
-#include "nurbstess.h"
-#include "bufpool.h"
-#include "quilt.h"
-#include "knotvector.h"
-#include "mapdesc.h"
-#include "maplist.h"
-
-void 
-NurbsTessellator::set_domain_distance_u_rate(REAL u_rate)
-{
-  subdivider.set_domain_distance_u_rate(u_rate);
-}
-
-void 
-NurbsTessellator::set_domain_distance_v_rate(REAL v_rate)
-{
-  subdivider.set_domain_distance_v_rate(v_rate);
-}
-
-void
-NurbsTessellator::set_is_domain_distance_sampling(int flag)
-{
-  subdivider.set_is_domain_distance_sampling(flag);
-}
-
-void
-NurbsTessellator::resetObjects( void )
-{
-    subdivider.clear();
-}
-
-void
-NurbsTessellator::makeobj( int )
-{
-#ifndef NDEBUG
-   _glu_dprintf( "makeobj\n" );
-#endif
-}
-
-void
-NurbsTessellator::closeobj( void )
-{
-#ifndef NDEBUG
-   _glu_dprintf( "closeobj\n" );
-#endif
-}
-
-void
-NurbsTessellator::bgnrender( void )
-{
-#ifndef NDEBUG
-   _glu_dprintf( "bgnrender\n" );
-#endif
-}
-
-void
-NurbsTessellator::endrender( void )
-{
-#ifndef NDEBUG
-    _glu_dprintf( "endrender\n" );
-#endif
-}
-
-/*-----------------------------------------------------------------------------
- * do_freebgnsurface - free o_surface structure 
- *
- * Client: do_freeall(), bgnsurface()
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::do_freebgnsurface( O_surface *o_surface )
-{
-    o_surface->deleteMe( o_surfacePool );
-}
-
-
-/*-----------------------------------------------------------------------------
- * do_bgnsurface - begin the display of a surface
- *
- * Client: bgnsurface()
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::do_bgnsurface( O_surface *o_surface )
-{
-    if( inSurface ) {
-	do_nurbserror( 27 );
-	endsurface();
-    }
-    inSurface = 1;
-
-    if( ! playBack ) bgnrender();
-
-    isTrimModified = 0;
-    isSurfaceModified = 0;
-    isDataValid = 1;
-    numTrims = 0;
-    currentSurface = o_surface;
-    nextTrim = &( currentSurface->o_trim );
-    nextNurbssurface = &( currentSurface->o_nurbssurface );
-}
-
-/*-----------------------------------------------------------------------------
- * do_bgncurve - begin the display of a curve 
- * 
- * Client: bgncurve()
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::do_bgncurve( O_curve *o_curve )
-{
-    if ( inCurve ) {
-	do_nurbserror( 6 );
-	endcurve();
-    }
-
-    inCurve = 1;
-    currentCurve = o_curve;
-    currentCurve->curvetype = ct_none;
-
-    if( inTrim ) {
-        if( *nextCurve != o_curve ) {
-	    isCurveModified = 1;
-	    *nextCurve = o_curve;
-	}
-    } else {
-        if( ! playBack ) bgnrender();
-        isDataValid = 1;
-    }
-    nextCurve = &(o_curve->next);
-    nextPwlcurve = &(o_curve->curve.o_pwlcurve);
-    nextNurbscurve = &(o_curve->curve.o_nurbscurve);
-}
-
-/*-----------------------------------------------------------------------------
- * do_endcurve -
- * 
- * Client: endcurve()
- *-----------------------------------------------------------------------------
- */
-    
-void
-NurbsTessellator::do_endcurve( void )
-{
-    if( ! inCurve ) {
-	do_nurbserror( 7 );
-	return;
-    }
-    inCurve = 0;
-
-    *nextCurve = 0;
-    if (currentCurve->curvetype == ct_nurbscurve)
-	*nextNurbscurve = 0;
-    else
-	*nextPwlcurve = 0;
-
-    if ( ! inTrim ) {
-        if( ! isDataValid ) {
-            do_freecurveall( currentCurve ); 
-	    return;
-        }
-
-	int errval;
-	errval = ::mysetjmp( jumpbuffer );
-	if( errval == 0 ) {
-	    if( currentCurve->curvetype == ct_nurbscurve ) {
-		subdivider.beginQuilts();
-		for( O_nurbscurve *n = currentCurve->curve.o_nurbscurve; n != 0; n = n->next ) 
-		    subdivider.addQuilt( n->bezier_curves );
-		subdivider.endQuilts();
-		subdivider.drawCurves(); 
-		if( ! playBack ) endrender();
-	    } else {
-		/* XXX */
-	        if( ! playBack ) endrender();
-	        /*do_draw_pwlcurve( currentCurve->curve.o_pwlcurve ) */;
-	        do_nurbserror( 9 );
-	    }
-	} else {
-	    if( ! playBack ) endrender();
-	    do_nurbserror( errval );
-	}
-	do_freecurveall( currentCurve );
-	resetObjects();
-    }
-}
-
-/*-----------------------------------------------------------------------------
- * do_endsurface - mark end of surface, display surface, free immediate data 
- *
- * Client:
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::do_endsurface( void )
-{
-    if( inTrim ) {
-	do_nurbserror( 12 );
-	endtrim();
-    }
-
-    if( ! inSurface ) {
-	do_nurbserror( 13 );
-	return;
-    }
-    inSurface = 0;
-
-    *nextNurbssurface = 0;
-
-    if( ! isDataValid ) {
-        do_freeall( ); 
-	return;
-    }
-
-    if( *nextTrim != 0 ) {
-	isTrimModified = 1;
-        *nextTrim = 0;
-    }
-
-    int errval;
-
-    errval = ::mysetjmp( jumpbuffer );
-    if( errval == 0 ) {
-        if( numTrims > 0 ) {
-
-	    subdivider.beginTrims();
-	    for( O_trim	*trim = currentSurface->o_trim; trim; trim = trim->next ) {
-		subdivider.beginLoop();
-		for( O_curve *curve = trim->o_curve; curve; curve = curve->next ) {  
-		    curve->used = 0;
-		    assert( curve->curvetype != ct_none );
-		    if (curve->curvetype == ct_pwlcurve) {
-			O_pwlcurve *c = curve->curve.o_pwlcurve; 
-			subdivider.addArc( c->npts, c->pts, curve->nuid );
-		    } else {
-			Quilt	   *quilt = curve->curve.o_nurbscurve->bezier_curves;
-			Quiltspec  *qspec = quilt->qspec;
-			REAL       *cpts  = quilt->cpts + qspec->offset;
-			REAL       *cptsend = cpts + (qspec->width * qspec->order * qspec->stride);
-			for( ; cpts != cptsend; cpts += qspec->order*qspec->stride ) 
-			     subdivider.addArc( cpts, quilt, curve->nuid );
-		    }
-		}
-		subdivider.endLoop();
-	    }
-	    subdivider.endTrims();
-	}
-
-	subdivider.beginQuilts();
-	for( O_nurbssurface *n = currentSurface->o_nurbssurface; n; n = n->next ) 
-	    subdivider.addQuilt( n->bezier_patches );
-	subdivider.endQuilts();
-        subdivider.drawSurfaces( currentSurface->nuid ); 
-	if( ! playBack ) endrender();
-    } else {
-	if( ! playBack ) endrender();
-	do_nurbserror( errval );
-    }
-
-    do_freeall( );
-    resetObjects();
-}
-
-/*-----------------------------------------------------------------------------
- * do_freeall - free all data allocated in immediate mode
- *
- * Client:
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::do_freeall( void )
-{
-    for( O_trim *o_trim = currentSurface->o_trim; o_trim; ) {
-	O_trim *next_o_trim = o_trim->next;
-        for( O_curve *curve = o_trim->o_curve; curve; ) {
-	    O_curve *next_o_curve = curve->next;
-	    do_freecurveall( curve );
-	    curve = next_o_curve;
-	}
-	if( o_trim->save == 0 ) do_freebgntrim( o_trim );
-	o_trim = next_o_trim;
-    }
-
-    O_nurbssurface *nurbss, *next_nurbss;
-    for( nurbss= currentSurface->o_nurbssurface; nurbss; nurbss = next_nurbss) {
-	next_nurbss = nurbss->next;
-	if( nurbss->save == 0 )
-	    do_freenurbssurface( nurbss );
-	else
-	    nurbss->used = 0;
-    }
-
-    if( currentSurface->save == 0 ) do_freebgnsurface( currentSurface );
-}
-
-void
-NurbsTessellator::do_freecurveall( O_curve *curve )
-{
-    assert( curve->curvetype != ct_none );
-
-    if( curve->curvetype == ct_nurbscurve ) {
-	O_nurbscurve *ncurve, *next_ncurve;
-	for( ncurve=curve->curve.o_nurbscurve; ncurve; ncurve=next_ncurve ) {
-	    next_ncurve = ncurve->next;
-	    if( ncurve->save == 0 )
-		do_freenurbscurve( ncurve );
-	    else
-		ncurve->used = 0;
-	}
-    } else {
-	O_pwlcurve *pcurve, *next_pcurve;
-	for( pcurve=curve->curve.o_pwlcurve; pcurve; pcurve=next_pcurve ) {
-	    next_pcurve = pcurve->next;
-	    if( pcurve->save == 0 )
-		do_freepwlcurve( pcurve );
-	    else
-		pcurve->used = 0;
-	}
-    }
-    if( curve->save == 0 )
-        do_freebgncurve( curve );
-}
-
-
-/*-----------------------------------------------------------------------------
- * do_freebgntrim - free the space allocated for a trim loop
- *
- * Client:
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::do_freebgntrim( O_trim *o_trim )
-{ 
-    o_trim->deleteMe( o_trimPool );
-}
-
-
-/*-----------------------------------------------------------------------------
- * do_bgntrim - link in a trim loop to the current trimmed surface description
- *
- * Client: bgntrim()
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::do_bgntrim( O_trim *o_trim )
-{
-
-    if( ! inSurface ) {
-	do_nurbserror( 15 );
-	bgnsurface( 0 );
-	inSurface = 2;
-    }
-
-    if( inTrim ) {
-	do_nurbserror( 16 );
-	endtrim();
-    }
-    inTrim = 1;
-
-    if( *nextTrim != o_trim ) {
-	isTrimModified = 1;	
-        *nextTrim = o_trim;
-    }
-
-    currentTrim = o_trim;
-    nextTrim = &(o_trim->next);
-    nextCurve = &(o_trim->o_curve);
-}
-
-
-/*-----------------------------------------------------------------------------
- * do_endtrim - mark the end of the current trim loop 
- *
- * Client: endtrim()
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::do_endtrim( void )
-{
-    if( ! inTrim ) {
-	do_nurbserror( 17 );
-	return;
-    }
-    inTrim = 0;
-
-    if( currentTrim->o_curve == 0 ) {
-	do_nurbserror( 18 );
-	isDataValid = 0;
-    }
-
-    numTrims++;
-   
-    if( *nextCurve != 0 ) {
-	isTrimModified = 1;
-        *nextCurve = 0;	
-    }
-}
-
-/*-----------------------------------------------------------------------------
- * do_freepwlcurve -
- * 
- * Client:
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::do_freepwlcurve( O_pwlcurve *o_pwlcurve )
-{
-    o_pwlcurve->deleteMe( o_pwlcurvePool );
-}
-
-void
-NurbsTessellator::do_freebgncurve( O_curve *o_curve )
-{
-    o_curve->deleteMe( o_curvePool );
-}
-
-/*-----------------------------------------------------------------------------
- * do_pwlcurve - link in pwl trim loop to the current surface description
- * 
- * Client: pwlcurve()
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::do_pwlcurve( O_pwlcurve *o_pwlcurve )
-{
-    if( ! inTrim ) {
-	do_nurbserror( 19 );
-	if( o_pwlcurve->save == 0 )
-	    do_freepwlcurve(o_pwlcurve );
-	return;
-    }
-
-    if( ! inCurve ) {
-	bgncurve( 0 );
-	inCurve = 2;
-    }
-
-    if( o_pwlcurve->used ) {
-	do_nurbserror( 20 );
-	isDataValid = 0;
-	return;
-    } else
-        o_pwlcurve->used = 1;
-
-    if( currentCurve->curvetype == ct_none ) {
-        currentCurve->curvetype = ct_pwlcurve;
-    } else if( currentCurve->curvetype != ct_pwlcurve ) {
-	do_nurbserror( 21 );
-	isDataValid = 0;
-	return;
-    }
-	
-    if( *nextPwlcurve != o_pwlcurve ) {
-	isCurveModified = 1;
-        *nextPwlcurve = o_pwlcurve;
-    }
-    nextPwlcurve = &(o_pwlcurve->next);
-
-    if( o_pwlcurve->owner != currentCurve ) {
-	isCurveModified = 1;
-	o_pwlcurve->owner = currentCurve;
-    }
-
-    if( inCurve == 2 ) 
-	endcurve();
-}
-
-
-/*-----------------------------------------------------------------------------
- * do_freenurbscurve -
- * 
- * Client:
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::do_freenurbscurve( O_nurbscurve *o_nurbscurve )
-{
-    o_nurbscurve->bezier_curves->deleteMe( quiltPool );
-    o_nurbscurve->deleteMe( o_nurbscurvePool );
-}
-
-
-/*-----------------------------------------------------------------------------
- * do_nurbscurve -
- * 
- * Client: nurbscurve() 
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::do_nurbscurve( O_nurbscurve *o_nurbscurve )
-{
-    if ( ! inCurve ) {
-	bgncurve( 0 );
-	inCurve = 2;
-    }
-
-    if( o_nurbscurve->used ) {
-	/* error - curve was already called in current surface */
-	do_nurbserror( 23 );
-	isDataValid = 0;
-	return;
-    } else
-        o_nurbscurve->used = 1;
-
-    if( currentCurve->curvetype == ct_none ) {
-        currentCurve->curvetype = ct_nurbscurve;
-    } else if( currentCurve->curvetype != ct_nurbscurve ) {
-	do_nurbserror( 24 );
-	isDataValid = 0;
-	return;
-    }
-	
-    if( *nextNurbscurve != o_nurbscurve ) {
-	isCurveModified = 1;
-	*nextNurbscurve = o_nurbscurve;
-    }
-
-    nextNurbscurve = &(o_nurbscurve->next);
-
-    if( o_nurbscurve->owner != currentCurve ) {
-	isCurveModified = 1;
-	o_nurbscurve->owner = currentCurve;
-    }
-
-    if( o_nurbscurve->owner == 0 )
-	isCurveModified = 1;
-    
-    if( inCurve == 2 )
-        endcurve();
-}
-
-
-/*-----------------------------------------------------------------------------
- * do_freenurbssurface -
- *
- * Client:
- *-----------------------------------------------------------------------------
- */
-
-void
-NurbsTessellator::do_freenurbssurface( O_nurbssurface *o_nurbssurface )
-{
-    o_nurbssurface->bezier_patches->deleteMe( quiltPool );
-    o_nurbssurface->deleteMe( o_nurbssurfacePool );
-}
-
-/*-----------------------------------------------------------------------------
- * do_nurbssurface -
- * 
- * Client: nurbssurface()
- *-----------------------------------------------------------------------------
- */
-void
-NurbsTessellator::do_nurbssurface( O_nurbssurface *o_nurbssurface )
-{
-    if( ! inSurface ) {
-	bgnsurface( 0 );
-	inSurface = 2;
-    }
-
-    if( o_nurbssurface->used ) {
-	/* error - surface was already called in current block */
-	do_nurbserror( 25 );
-	isDataValid = 0;
-	return;
-    } else
-        o_nurbssurface->used = 1;
-
-    if( *nextNurbssurface != o_nurbssurface ) {
-	isSurfaceModified = 1;
-        *nextNurbssurface  = o_nurbssurface;
-    }
-
-    if( o_nurbssurface->owner != currentSurface ) {
-	isSurfaceModified = 1;
-	o_nurbssurface->owner = currentSurface;
-    }
-    nextNurbssurface = &(o_nurbssurface->next);
-
-    if( inSurface == 2  )
-	endsurface();
-}
-
-
-/*-----------------------------------------------------------------------------
- * do_freenurbsproperty
- * 
- *-----------------------------------------------------------------------------
- */
-
-void
-NurbsTessellator::do_freenurbsproperty( Property *prop )
-{
-    prop->deleteMe( propertyPool );
-}
-
-    
-/*-----------------------------------------------------------------------------
- * do_setnurbsproperty -
- * 
- *-----------------------------------------------------------------------------
- */
-
-void
-NurbsTessellator::do_setnurbsproperty( Property *prop )
-{
-    renderhints.setProperty( prop->tag, prop->value );
-    if( prop->save == 0 )
-	do_freenurbsproperty( prop );
-}
-
-void
-NurbsTessellator::do_setnurbsproperty2( Property *prop )
-{
-    Mapdesc *mapdesc = maplist.find( prop->type );
-
-    mapdesc->setProperty( prop->tag, prop->value );
-    if( prop->save == 0 )
-	do_freenurbsproperty( prop );
-}
-
-void
-NurbsTessellator::errorHandler( int )
-{
-}
-
-void
-NurbsTessellator::do_nurbserror( int msg )
-{
-    errorHandler( msg );
-}
-
-int 
-NurbsTessellator::do_check_knots( Knotvector *knots, const char *msg )
-{
-    int status = knots->validate();
-    if( status ) {
-	do_nurbserror( status );
-        if( renderhints.errorchecking != N_NOMSG ) knots->show( msg );
-    }
-    return status;
-}
-
-
-
-
-
diff --git a/src/glu/sgi/libnurbs/internals/nurbstess.h b/src/glu/sgi/libnurbs/internals/nurbstess.h
deleted file mode 100644
index a6869002fb6..00000000000
--- a/src/glu/sgi/libnurbs/internals/nurbstess.h
+++ /dev/null
@@ -1,172 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * nurbstess.h
- *
- */
-
-#ifndef __glunurbstess_h_
-#define __glunurbstess_h_
-
-#include "mysetjmp.h"
-#include "subdivider.h"
-#include "renderhints.h"
-#include "backend.h"
-#include "maplist.h"
-#include "reader.h"
-#include "nurbsconsts.h"
-
-struct Knotvector;
-class Quilt;
-class DisplayList;
-class BasicCurveEvaluator;
-class BasicSurfaceEvaluator;
-
-class NurbsTessellator {
-public:
-    			NurbsTessellator( BasicCurveEvaluator &c,
-                                          BasicSurfaceEvaluator &e );
-    			virtual ~NurbsTessellator( void );
-
-    void     		getnurbsproperty( long, INREAL * );
-    void     		getnurbsproperty( long, long, INREAL * );
-    void     		setnurbsproperty( long, INREAL );
-    void     		setnurbsproperty( long, long, INREAL );
-    void		setnurbsproperty( long, long, INREAL * );
-    void		setnurbsproperty( long, long, INREAL *, long, long );
-
-    // called before a tessellation begins/ends
-    virtual void	bgnrender( void );
-    virtual void	endrender( void );
-
-    // called to make a display list of the output vertices
-    virtual void	makeobj( int n );
-    virtual void	closeobj( void );
-
-    // called when a error occurs
-    virtual void	errorHandler( int );
-
-    void     		bgnsurface( long );
-    void     		endsurface( void );
-    void     		bgntrim( void );
-    void     		endtrim( void );
-    void     		bgncurve( long );
-    void     		endcurve( void );
-    void     		pwlcurve( long, INREAL[], long, long );
-    void     		nurbscurve( long, INREAL[], long, INREAL[], long, long );
-    void     		nurbssurface( long, INREAL[], long, INREAL[], long, long,
-			    INREAL[], long, long, long );
-
-    void 		defineMap( long, long, long );
-    void		redefineMaps( void );
-
-    // recording of input description
-    void 		discardRecording( void * );
-    void * 		beginRecording( void );
-    void 		endRecording( void );
-    void 		playRecording( void * );
-
-    //for optimizing untrimmed nurbs in the case of domain distance sampling
-    void set_domain_distance_u_rate(REAL u_rate);
-    void set_domain_distance_v_rate(REAL v_rate);
-    void set_is_domain_distance_sampling(int flag);
-    
-
-protected:
-    Renderhints		renderhints;
-    Maplist		maplist;
-    Backend		backend;
-
-private:
-
-    void		resetObjects( void );
-    int			do_check_knots( Knotvector *, const char * );
-    void		do_nurbserror( int );
-    void		do_bgncurve( O_curve * );
-    void		do_endcurve( void );
-    void		do_freeall( void );
-    void		do_freecurveall( O_curve * );
-    void		do_freebgntrim( O_trim * );
-    void		do_freebgncurve( O_curve * );
-    void		do_freepwlcurve( O_pwlcurve * );
-    void		do_freenurbscurve( O_nurbscurve * );
-    void		do_freenurbssurface( O_nurbssurface * );
-    void 		do_freebgnsurface( O_surface * );
-    void		do_bgnsurface( O_surface * );
-    void		do_endsurface( void );
-    void		do_bgntrim( O_trim * );
-    void		do_endtrim( void );
-    void		do_pwlcurve( O_pwlcurve * );
-    void		do_nurbscurve( O_nurbscurve * );
-    void		do_nurbssurface( O_nurbssurface * );
-    void		do_freenurbsproperty( Property * );
-    void		do_setnurbsproperty( Property * );
-    void		do_setnurbsproperty2( Property * );
-
-    Subdivider		subdivider;
-    JumpBuffer* 	jumpbuffer;
-    Pool		o_pwlcurvePool;
-    Pool		o_nurbscurvePool;
-    Pool		o_curvePool;
-    Pool		o_trimPool;
-    Pool		o_surfacePool;
-    Pool		o_nurbssurfacePool;
-    Pool		propertyPool;
-public:
-    Pool		quiltPool;
-private:
-    TrimVertexPool	extTrimVertexPool;
-
-    int			inSurface;		/* bgnsurface seen */
-    int			inCurve;		/* bgncurve seen */
-    int			inTrim;			/* bgntrim seen */
-    int			isCurveModified;	/* curve changed */
-    int			isTrimModified;		/* trim curves changed */
-    int			isSurfaceModified;	/* surface changed */
-    int			isDataValid;		/* all data is good */
-    int			numTrims;		/* valid trim regions */
-    int			playBack;
-
-    O_trim**		nextTrim;		/* place to link o_trim */
-    O_curve**		nextCurve;		/* place to link o_curve */
-    O_nurbscurve**	nextNurbscurve;		/* place to link o_nurbscurve */
-    O_pwlcurve**	nextPwlcurve;		/* place to link o_pwlcurve */
-    O_nurbssurface**	nextNurbssurface;	/* place to link o_nurbssurface */
-
-    O_surface*		currentSurface;
-    O_trim*		currentTrim;
-    O_curve*		currentCurve;
-
-    DisplayList		*dl;
-
-};
-
-#endif /* __glunurbstess_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/patch.cc b/src/glu/sgi/libnurbs/internals/patch.cc
deleted file mode 100644
index 808baa69e44..00000000000
--- a/src/glu/sgi/libnurbs/internals/patch.cc
+++ /dev/null
@@ -1,504 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * patch.c++
- *
- */
-
-#include <stdio.h>
-#include "glimports.h"
-#include "mystdio.h"
-#include "myassert.h"
-#include "mymath.h"
-#include "mystring.h"
-#include "patch.h"
-#include "mapdesc.h"
-#include "quilt.h"
-#include "nurbsconsts.h"
-#include "simplemath.h" //for glu_abs function in ::singleStep();
-
-
-/*--------------------------------------------------------------------------
- * Patch - copy patch from quilt and transform control points
- *--------------------------------------------------------------------------
- */
-
-Patch::Patch( Quilt_ptr geo, REAL *pta, REAL *ptb, Patch *n )
-{
-/* pspec[i].range is uninit here */
-    mapdesc = geo->mapdesc;
-    cullval = mapdesc->isCulling() ? CULL_ACCEPT : CULL_TRIVIAL_ACCEPT;
-    notInBbox = mapdesc->isBboxSubdividing() ? 1 : 0;
-    needsSampling = mapdesc->isRangeSampling() ? 1 : 0;
-    pspec[0].order = geo->qspec[0].order;
-    pspec[1].order = geo->qspec[1].order;
-    pspec[0].stride = pspec[1].order * MAXCOORDS;
-    pspec[1].stride = MAXCOORDS;
-
-    /* transform control points to sampling and culling spaces */
-    REAL *ps  = geo->cpts;
-    geo->select( pta, ptb );
-    ps += geo->qspec[0].offset;
-    ps += geo->qspec[1].offset;
-    ps += geo->qspec[0].index * geo->qspec[0].order * geo->qspec[0].stride;
-    ps += geo->qspec[1].index * geo->qspec[1].order * geo->qspec[1].stride;
-
-    if( needsSampling ) {
-	mapdesc->xformSampling( ps, geo->qspec[0].order, geo->qspec[0].stride, 
-				geo->qspec[1].order, geo->qspec[1].stride,
-			        spts, pspec[0].stride, pspec[1].stride );
-    }
-
-    if( cullval == CULL_ACCEPT  ) {
-	mapdesc->xformCulling( ps, geo->qspec[0].order, geo->qspec[0].stride, 
-			       geo->qspec[1].order, geo->qspec[1].stride,
-			       cpts, pspec[0].stride, pspec[1].stride ); 
-    }
-    
-    if( notInBbox ) {
-	mapdesc->xformBounding( ps, geo->qspec[0].order, geo->qspec[0].stride, 
-			       geo->qspec[1].order, geo->qspec[1].stride,
-			       bpts, pspec[0].stride, pspec[1].stride ); 
-    }
-    
-    /* set scale range */
-    pspec[0].range[0] = geo->qspec[0].breakpoints[geo->qspec[0].index];
-    pspec[0].range[1] = geo->qspec[0].breakpoints[geo->qspec[0].index+1];
-    pspec[0].range[2] = pspec[0].range[1] - pspec[0].range[0];
-
-    pspec[1].range[0] = geo->qspec[1].breakpoints[geo->qspec[1].index];
-    pspec[1].range[1] = geo->qspec[1].breakpoints[geo->qspec[1].index+1];
-    pspec[1].range[2] = pspec[1].range[1] - pspec[1].range[0];
-
-    // may need to subdivide to match range of sub-patch
-    if( pspec[0].range[0] != pta[0] ) {
-	assert( pspec[0].range[0] < pta[0] );
-	Patch lower( *this, 0, pta[0], 0 );
-	*this = lower;
-    }
-
-    if( pspec[0].range[1] != ptb[0] ) {
-	assert( pspec[0].range[1] > ptb[0] );
-	Patch upper( *this, 0, ptb[0], 0 );
-    }
-
-    if( pspec[1].range[0] != pta[1] ) {
-	assert( pspec[1].range[0] < pta[1] );
-	Patch lower( *this, 1, pta[1], 0 );
-	*this = lower;
-    }
-
-    if( pspec[1].range[1] != ptb[1] ) {
-	assert( pspec[1].range[1] > ptb[1] );
-	Patch upper( *this, 1, ptb[1], 0 );
-    }
-    checkBboxConstraint();
-    next = n;
-}
-
-/*--------------------------------------------------------------------------
- * Patch - subdivide a patch along an isoparametric line
- *--------------------------------------------------------------------------
- */
-
-Patch::Patch( Patch& upper, int param, REAL value, Patch *n )
-{
-    Patch& lower = *this;
-
-    lower.cullval = upper.cullval;
-    lower.mapdesc = upper.mapdesc;
-    lower.notInBbox = upper.notInBbox;
-    lower.needsSampling = upper.needsSampling;
-    lower.pspec[0].order = upper.pspec[0].order;
-    lower.pspec[1].order = upper.pspec[1].order;
-    lower.pspec[0].stride = upper.pspec[0].stride;
-    lower.pspec[1].stride = upper.pspec[1].stride;
-    lower.next = n;
-
-    /* reset scale range */
-    switch( param ) {
-	case 0: {
-    	    REAL d = (value-upper.pspec[0].range[0]) / upper.pspec[0].range[2];
-	    if( needsSampling )
-                mapdesc->subdivide( upper.spts, lower.spts, d, pspec[1].order,
-                        pspec[1].stride, pspec[0].order, pspec[0].stride );
-
-    	    if( cullval == CULL_ACCEPT ) 
-	        mapdesc->subdivide( upper.cpts, lower.cpts, d, pspec[1].order,
-                        pspec[1].stride, pspec[0].order, pspec[0].stride );
-
-    	    if( notInBbox ) 
-	        mapdesc->subdivide( upper.bpts, lower.bpts, d, pspec[1].order,
-                        pspec[1].stride, pspec[0].order, pspec[0].stride );
-	    
-            lower.pspec[0].range[0] = upper.pspec[0].range[0];
-            lower.pspec[0].range[1] = value;
-    	    lower.pspec[0].range[2] = value - upper.pspec[0].range[0];
-            upper.pspec[0].range[0] = value;
-    	    upper.pspec[0].range[2] = upper.pspec[0].range[1] - value;
-
-            lower.pspec[1].range[0] = upper.pspec[1].range[0];
-            lower.pspec[1].range[1] = upper.pspec[1].range[1];
-    	    lower.pspec[1].range[2] = upper.pspec[1].range[2];
-	    break;
-	}
-	case 1: {
-    	    REAL d = (value-upper.pspec[1].range[0]) / upper.pspec[1].range[2];
-	    if( needsSampling )
-	        mapdesc->subdivide( upper.spts, lower.spts, d, pspec[0].order,
-                        pspec[0].stride, pspec[1].order, pspec[1].stride );
-    	    if( cullval == CULL_ACCEPT ) 
-	        mapdesc->subdivide( upper.cpts, lower.cpts, d, pspec[0].order,
-                        pspec[0].stride, pspec[1].order, pspec[1].stride );
-    	    if( notInBbox ) 
-	        mapdesc->subdivide( upper.bpts, lower.bpts, d, pspec[0].order,
-                        pspec[0].stride, pspec[1].order, pspec[1].stride );
-            lower.pspec[0].range[0] = upper.pspec[0].range[0];
-            lower.pspec[0].range[1] = upper.pspec[0].range[1];
-    	    lower.pspec[0].range[2] = upper.pspec[0].range[2];
-
-            lower.pspec[1].range[0] = upper.pspec[1].range[0];
-            lower.pspec[1].range[1] = value;
-    	    lower.pspec[1].range[2] = value - upper.pspec[1].range[0];
-            upper.pspec[1].range[0] = value;
-    	    upper.pspec[1].range[2] = upper.pspec[1].range[1] - value;
-	    break;
-	}
-    }
-
-    // inherit bounding box
-    if( mapdesc->isBboxSubdividing() && ! notInBbox )
-	memcpy( lower.bb, upper.bb, sizeof( bb ) );
-	    
-    lower.checkBboxConstraint();
-    upper.checkBboxConstraint();
-}
-
-/*--------------------------------------------------------------------------
- * clamp - clamp the sampling rate to a given maximum
- *--------------------------------------------------------------------------
- */
-
-void
-Patch::clamp( void )
-{
-    if( mapdesc->clampfactor != N_NOCLAMPING ) {
-	pspec[0].clamp( mapdesc->clampfactor );
-	pspec[1].clamp( mapdesc->clampfactor );
-    }
-}
-
-void 
-Patchspec::clamp( REAL clampfactor )
-{
-    if( sidestep[0] < minstepsize )
-        sidestep[0] = clampfactor * minstepsize;
-    if( sidestep[1] < minstepsize )
-        sidestep[1] = clampfactor * minstepsize;
-    if( stepsize < minstepsize )
-        stepsize = clampfactor * minstepsize;
-}
-
-void 
-Patch::checkBboxConstraint( void )
-{
-    if( notInBbox && 
-	mapdesc->bboxTooBig( bpts, pspec[0].stride, pspec[1].stride,
-				   pspec[0].order, pspec[1].order, bb ) != 1 ) {
-	notInBbox = 0;
-    }
-}
-
-void
-Patch::bbox( void )
-{
-    if( mapdesc->isBboxSubdividing() )
-	mapdesc->surfbbox( bb );
-}
-
-/*--------------------------------------------------------------------------
- * getstepsize - compute the sampling density across the patch
- * 		and determine if patch needs to be subdivided
- *--------------------------------------------------------------------------
- */
-
-void
-Patch::getstepsize( void )
-{
-    pspec[0].minstepsize = pspec[1].minstepsize = 0;
-    pspec[0].needsSubdivision = pspec[1].needsSubdivision = 0;
-
-    if( mapdesc->isConstantSampling() ) {
-	// fixed number of samples per patch in each direction
-	// maxsrate is number of s samples per patch
-	// maxtrate is number of t samples per patch
-        pspec[0].getstepsize( mapdesc->maxsrate );
-        pspec[1].getstepsize( mapdesc->maxtrate );
-
-    } else if( mapdesc->isDomainSampling() ) {
-	// maxsrate is number of s samples per unit s length of domain
-	// maxtrate is number of t samples per unit t length of domain
-        pspec[0].getstepsize( mapdesc->maxsrate * pspec[0].range[2] );
-        pspec[1].getstepsize( mapdesc->maxtrate * pspec[1].range[2] );
-
-    } else if( ! needsSampling ) {
-	pspec[0].singleStep();
-	pspec[1].singleStep();
-    } else {
-	// upper bound on path length between sample points
-        REAL tmp[MAXORDER][MAXORDER][MAXCOORDS];
-	const int trstride = sizeof(tmp[0]) / sizeof(REAL);
-	const int tcstride = sizeof(tmp[0][0]) / sizeof(REAL); 
-
-	assert( pspec[0].order <= MAXORDER );
-    
-	/* points have been transformed, therefore they are homogeneous */
-
-	int val = mapdesc->project( spts, pspec[0].stride, pspec[1].stride, 
-		 &tmp[0][0][0], trstride, tcstride, 
-		 pspec[0].order, pspec[1].order ); 
-        if( val == 0 ) {
-	    // control points cross infinity, therefore partials are undefined
-            pspec[0].getstepsize( mapdesc->maxsrate );
-            pspec[1].getstepsize( mapdesc->maxtrate );
-        } else {
-            REAL t1 = mapdesc->getProperty( N_PIXEL_TOLERANCE );
-//	    REAL t2 = mapdesc->getProperty( N_ERROR_TOLERANCE );
-	    pspec[0].minstepsize = ( mapdesc->maxsrate > 0.0 ) ? 
-			(pspec[0].range[2] / mapdesc->maxsrate) : 0.0;
-	    pspec[1].minstepsize = ( mapdesc->maxtrate > 0.0 ) ? 
-			(pspec[1].range[2] / mapdesc->maxtrate) : 0.0;
-	    if( mapdesc->isParametricDistanceSampling() ||
-                mapdesc->isObjectSpaceParaSampling() ) {       
-
-                REAL t2;
-                t2 = mapdesc->getProperty( N_ERROR_TOLERANCE );
-		
-		// t2 is upper bound on the distance between surface and tessellant 
-		REAL ssv[2], ttv[2];
-		REAL ss = mapdesc->calcPartialVelocity( ssv, &tmp[0][0][0], trstride, tcstride, pspec[0].order, pspec[1].order, 2, 0, pspec[0].range[2], pspec[1].range[2], 0 );
-		REAL st = mapdesc->calcPartialVelocity(   0, &tmp[0][0][0], trstride, tcstride, pspec[0].order, pspec[1].order, 1, 1, pspec[0].range[2], pspec[1].range[2], -1 );
-		REAL tt = mapdesc->calcPartialVelocity( ttv, &tmp[0][0][0], trstride, tcstride, pspec[0].order, pspec[1].order, 0, 2, pspec[0].range[2], pspec[1].range[2], 1 );
-	        //make sure that ss st and tt are nonnegative:
- 	        if(ss <0) ss = -ss;
-	        if(st <0) st = -st;
-                if(tt <0) tt = -tt;
-
-		if( ss != 0.0 && tt != 0.0 ) {
-		    /* printf( "ssv[0] %g ssv[1] %g ttv[0] %g ttv[1] %g\n", 
-			ssv[0], ssv[1], ttv[0], ttv[1] ); */
-		    REAL ttq = sqrtf( (float) ss );
-		    REAL ssq = sqrtf( (float) tt );
-		    REAL ds = sqrtf( 4 * t2 * ttq / ( ss * ttq + st * ssq ) );
-		    REAL dt = sqrtf( 4 * t2 * ssq / ( tt * ssq + st * ttq ) );
-		    pspec[0].stepsize = ( ds < pspec[0].range[2] ) ? ds : pspec[0].range[2];
-		    REAL scutoff = 2.0 * t2 / ( pspec[0].range[2] * pspec[0].range[2]);
-		    pspec[0].sidestep[0] = (ssv[0] > scutoff) ? sqrtf( 2.0 * t2 / ssv[0] ) : pspec[0].range[2];
-		    pspec[0].sidestep[1] = (ssv[1] > scutoff) ? sqrtf( 2.0 * t2 / ssv[1] ) : pspec[0].range[2];
-    
-		    pspec[1].stepsize = ( dt < pspec[1].range[2] ) ? dt : pspec[1].range[2];
-		    REAL tcutoff = 2.0 * t2 / ( pspec[1].range[2] * pspec[1].range[2]);
-		    pspec[1].sidestep[0] = (ttv[0] > tcutoff) ? sqrtf( 2.0 * t2 / ttv[0] ) : pspec[1].range[2];
-		    pspec[1].sidestep[1] = (ttv[1] > tcutoff) ? sqrtf( 2.0 * t2 / ttv[1] ) : pspec[1].range[2];
-		} else if( ss != 0.0 ) {
-		    REAL x = pspec[1].range[2] * st;
-		    REAL ds = ( sqrtf( x * x + 8.0 * t2 * ss ) - x ) / ss;
-		    pspec[0].stepsize = ( ds < pspec[0].range[2] ) ? ds : pspec[0].range[2];
-		    REAL scutoff = 2.0 * t2 / ( pspec[0].range[2] * pspec[0].range[2]);
-		    pspec[0].sidestep[0] = (ssv[0] > scutoff) ? sqrtf( 2.0 * t2 / ssv[0] ) : pspec[0].range[2];
-		    pspec[0].sidestep[1] = (ssv[1] > scutoff) ? sqrtf( 2.0 * t2 / ssv[1] ) : pspec[0].range[2];
-		    pspec[1].singleStep();
-		} else if( tt != 0.0 ) {
-		    REAL x = pspec[0].range[2] * st;
-		    REAL dt = ( sqrtf( x * x + 8.0 * t2 * tt ) - x )  / tt;
-		    pspec[0].singleStep();
-		    REAL tcutoff = 2.0 * t2 / ( pspec[1].range[2] * pspec[1].range[2]);
-		    pspec[1].stepsize = ( dt < pspec[1].range[2] ) ? dt : pspec[1].range[2];
-		    pspec[1].sidestep[0] = (ttv[0] > tcutoff) ? sqrtf( 2.0 * t2 / ttv[0] ) : pspec[1].range[2];
-		    pspec[1].sidestep[1] = (ttv[1] > tcutoff) ? sqrtf( 2.0 * t2 / ttv[1] ) : pspec[1].range[2];
-		} else {
-		    if( 4.0 * t2  > st * pspec[0].range[2] * pspec[1].range[2] ) {
-			pspec[0].singleStep();
-			pspec[1].singleStep();
-		    } else {
-			REAL area = 4.0 * t2 / st;
-			REAL ds = sqrtf( area * pspec[0].range[2] / pspec[1].range[2] );
-			REAL dt = sqrtf( area * pspec[1].range[2] / pspec[0].range[2] );
-			pspec[0].stepsize = ( ds < pspec[0].range[2] ) ? ds : pspec[0].range[2];
-			pspec[0].sidestep[0] = pspec[0].range[2];
-			pspec[0].sidestep[1] = pspec[0].range[2];
-	
-			pspec[1].stepsize = ( dt < pspec[1].range[2] ) ? dt : pspec[1].range[2];
-			pspec[1].sidestep[0] = pspec[1].range[2];
-			pspec[1].sidestep[1] = pspec[1].range[2];
-		    }
-		}	
-	    } else if( mapdesc->isPathLengthSampling() ||
-		      mapdesc->isObjectSpacePathSampling()) {
-		// t1 is upper bound on path length
-		REAL msv[2], mtv[2];
-		REAL ms = mapdesc->calcPartialVelocity( msv, &tmp[0][0][0], trstride, tcstride, pspec[0].order, pspec[1].order, 1, 0, pspec[0].range[2], pspec[1].range[2], 0 );
-		REAL mt = mapdesc->calcPartialVelocity( mtv, &tmp[0][0][0], trstride, tcstride, pspec[0].order, pspec[1].order, 0, 1, pspec[0].range[2], pspec[1].range[2], 1 );
-                REAL side_scale = 1.0;
-
-		if( ms != 0.0 ) {
-		    if( mt != 0.0 ) {
-/*		    REAL d = t1 / ( ms * ms + mt * mt );*/
-/*		    REAL ds = mt * d;*/
-		    REAL ds = t1 / (2.0*ms);
-/*		    REAL dt = ms * d;*/
-		    REAL dt = t1 / (2.0*mt); 
-			pspec[0].stepsize = ( ds < pspec[0].range[2] ) ? ds : pspec[0].range[2];
-			pspec[0].sidestep[0] = ( msv[0] * pspec[0].range[2] > t1 ) ? (side_scale* t1 / msv[0]) : pspec[0].range[2];
-			pspec[0].sidestep[1] = ( msv[1] * pspec[0].range[2] > t1 ) ? (side_scale* t1 / msv[1]) : pspec[0].range[2];
-	
-			pspec[1].stepsize = ( dt < pspec[1].range[2] ) ? dt : pspec[1].range[2];
-			pspec[1].sidestep[0] = ( mtv[0] * pspec[1].range[2] > t1 ) ? (side_scale*t1 / mtv[0]) : pspec[1].range[2];
-			pspec[1].sidestep[1] = ( mtv[1] * pspec[1].range[2] > t1 ) ? (side_scale*t1 / mtv[1]) : pspec[1].range[2];
-		    } else {
-			pspec[0].stepsize = ( t1 < ms * pspec[0].range[2] ) ? (t1 / ms) : pspec[0].range[2];
-			pspec[0].sidestep[0] = ( msv[0] * pspec[0].range[2] > t1 ) ? (t1 / msv[0]) : pspec[0].range[2];
-			pspec[0].sidestep[1] = ( msv[1] * pspec[0].range[2] > t1 ) ? (t1 / msv[1]) : pspec[0].range[2];
-	
-			pspec[1].singleStep();
-		    }
-		} else {
-		    if( mt != 0.0 ) {
-			pspec[0].singleStep();
-
-			pspec[1].stepsize = ( t1 < mt * pspec[1].range[2] ) ? (t1 / mt) : pspec[1].range[2];
-			pspec[1].sidestep[0] = ( mtv[0] * pspec[1].range[2] > t1 ) ? (t1 / mtv[0]) : pspec[1].range[2];
-			pspec[1].sidestep[1] = ( mtv[1] * pspec[1].range[2] > t1 ) ? (t1 / mtv[1]) : pspec[1].range[2];
-		    } else {
-			pspec[0].singleStep();
-			pspec[1].singleStep();
-		    }
-		}
-	    } else if( mapdesc->isSurfaceAreaSampling() ) {
-		// t is the square root of area
-/*
-		REAL msv[2], mtv[2];
-		REAL ms = mapdesc->calcPartialVelocity( msv, &tmp[0][0][0], trstride, tcstride, pspec[0].order, pspec[1].order, 1, 0, pspec[0].range[2], pspec[1].range[2], 0 );
-		REAL mt = mapdesc->calcPartialVelocity( mtv, &tmp[0][0][0], trstride, tcstride, pspec[0].order, pspec[1].order, 0, 1, pspec[0].range[2], pspec[1].range[2], 1 );
-		if( ms != 0.0 &&  mt != 0.0 ) {
-			REAL d = 1.0 / (ms * mt);
-			t *= M_SQRT2;
-			REAL ds = t * sqrtf( d * pspec[0].range[2] / pspec[1].range[2] );
-			REAL dt = t * sqrtf( d * pspec[1].range[2] / pspec[0].range[2] );
-			pspec[0].stepsize = ( ds < pspec[0].range[2] ) ? ds : pspec[0].range[2];
-			pspec[0].sidestep[0] = ( msv[0] * pspec[0].range[2] > t ) ? (t / msv[0]) : pspec[0].range[2];
-			pspec[0].sidestep[1] = ( msv[1] * pspec[0].range[2] > t ) ? (t / msv[1]) : pspec[0].range[2];
-	
-			pspec[1].stepsize = ( dt < pspec[1].range[2] ) ? dt : pspec[1].range[2];
-			pspec[1].sidestep[0] = ( mtv[0] * pspec[1].range[2] > t ) ? (t / mtv[0]) : pspec[1].range[2];
-			pspec[1].sidestep[1] = ( mtv[1] * pspec[1].range[2] > t ) ? (t / mtv[1]) : pspec[1].range[2];
-		} else {
-		    pspec[0].singleStep();
-		    pspec[1].singleStep();
-		}
-*/
-	    } else {
-		pspec[0].singleStep();
-		pspec[1].singleStep();
-	    }
-	}
-    }
-
-#ifdef DEBUG
-    _glu_dprintf( "sidesteps %g %g %g %g, stepsize %g %g\n",
-	pspec[0].sidestep[0], pspec[0].sidestep[1],
-	pspec[1].sidestep[0], pspec[1].sidestep[1],
-	pspec[0].stepsize, pspec[1].stepsize );
-#endif
-
-    if( mapdesc->minsavings != N_NOSAVINGSSUBDIVISION ) {
-	REAL savings = 1./(pspec[0].stepsize * pspec[1].stepsize) ;
-	savings-= (2./( pspec[0].sidestep[0] + pspec[0].sidestep[1] )) * 
-		  (2./( pspec[1].sidestep[0] + pspec[1].sidestep[1] ));
-    
-	savings *= pspec[0].range[2] * pspec[1].range[2];
-	if( savings > mapdesc->minsavings ) {
-	    pspec[0].needsSubdivision = pspec[1].needsSubdivision = 1;
-	}
-    }
-
-    if( pspec[0].stepsize < pspec[0].minstepsize )  pspec[0].needsSubdivision =  1;
-    if( pspec[1].stepsize < pspec[1].minstepsize )  pspec[1].needsSubdivision =  1;
-    needsSampling = (needsSampling ? needsSamplingSubdivision() : 0);
-}
-
-void
-Patchspec::singleStep()
-{
-    stepsize =  sidestep[0] =  sidestep[1] = glu_abs(range[2]);
-}
-
-void 
-Patchspec::getstepsize( REAL max ) // max is number of samples for entire patch
-{
-    stepsize = ( max >= 1.0 ) ? range[2] / max : range[2];
-    if (stepsize < 0.0) {
-       stepsize = -stepsize;
-    }
-    sidestep[0]	=  sidestep[1] = minstepsize = stepsize;
-}
-
-int
-Patch::needsSamplingSubdivision( void )
-{
-    return (pspec[0].needsSubdivision || pspec[1].needsSubdivision) ? 1 : 0;
-}
-
-int
-Patch::needsNonSamplingSubdivision( void )
-{
-    return notInBbox;
-}
-
-int
-Patch::needsSubdivision( int param )
-{
-    return pspec[param].needsSubdivision;
-}
-
-int
-Patch::cullCheck( void )
-{
-    if( cullval == CULL_ACCEPT ) 
-	cullval = mapdesc->cullCheck( cpts, pspec[0].order,  pspec[0].stride,
-					    pspec[1].order,  pspec[1].stride );
-    return cullval;
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/patch.h b/src/glu/sgi/libnurbs/internals/patch.h
deleted file mode 100644
index 324a25938b4..00000000000
--- a/src/glu/sgi/libnurbs/internals/patch.h
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * patch.h
- *
- */
-
-#ifndef __glupatch_h_
-#define __glupatch_h_
-
-#include "types.h"
-#include "defines.h"
-
-class Quilt;
-class Mapdesc;
-
-
-struct Pspec {
-    REAL		range[3];
-    REAL		sidestep[2];
-    REAL		stepsize;
-    REAL		minstepsize;
-    int			needsSubdivision;
-};
-
-struct Patchspec : public Pspec {
-    int			order;
-    int			stride;
-    void 		clamp( REAL );
-    void 		getstepsize( REAL );
-    void		singleStep( void );    
-};
-
-class Patch {
-public:
-friend class Subdivider;
-friend class Quilt;
-friend class Patchlist;
-    			Patch( Quilt *, REAL*, REAL *, Patch * );
-    			Patch( Patch &, int, REAL, Patch * );
-    void		bbox( void );
-    void		clamp( void );
-    void		getstepsize( void );
-    int			cullCheck( void );
-    int			needsSubdivision( int );
-    int			needsSamplingSubdivision( void );
-    int			needsNonSamplingSubdivision( void );
-
-    int                 get_uorder() {return pspec[0].order;}
-    int                 get_vorder() {return pspec[1].order;}
-
-private:
-
-    Mapdesc*		mapdesc;
-    Patch*		next;
-    int			cullval;
-    int			notInBbox;
-    int			needsSampling;
-    REAL		cpts[MAXORDER*MAXORDER*MAXCOORDS]; //culling pts 
-    REAL		spts[MAXORDER*MAXORDER*MAXCOORDS]; //sampling pts 
-    REAL		bpts[MAXORDER*MAXORDER*MAXCOORDS]; //bbox pts
-    Patchspec		pspec[2];
-    void 		checkBboxConstraint( void );
-    REAL 		bb[2][MAXCOORDS];
-};
-#endif /* __glupatch_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/patchlist.cc b/src/glu/sgi/libnurbs/internals/patchlist.cc
deleted file mode 100644
index 6a400ab6f72..00000000000
--- a/src/glu/sgi/libnurbs/internals/patchlist.cc
+++ /dev/null
@@ -1,169 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * patchlist.c++
- *
- */
-
-#include <stdio.h>
-#include "glimports.h"
-#include "myassert.h"
-#include "mystdio.h"
-#include "quilt.h"
-#include "patchlist.h"
-#include "patch.h"
-
-Patchlist::Patchlist( Quilt *quilts, REAL *pta, REAL *ptb )
-{
-    patch = 0;
-    for( Quilt *q = quilts; q; q = q->next ) 
-	patch = new Patch( q, pta, ptb, patch );
-    pspec[0].range[0] = pta[0];
-    pspec[0].range[1] = ptb[0];
-    pspec[0].range[2] = ptb[0] - pta[0];
- 
-    pspec[1].range[0] = pta[1];
-    pspec[1].range[1] = ptb[1];
-    pspec[1].range[2] = ptb[1] - pta[1];
-}
-
-Patchlist::Patchlist( Patchlist &upper, int param,  REAL value)
-{
-    Patchlist &lower = *this;
-    patch = 0;
-    for( Patch *p = upper.patch; p; p = p->next )
-	patch = new Patch( *p, param, value, patch );
-
-    if( param == 0 ) {
-	lower.pspec[0].range[0] = upper.pspec[0].range[0];
-	lower.pspec[0].range[1] = value;
-	lower.pspec[0].range[2] = value - upper.pspec[0].range[0];
-	upper.pspec[0].range[0] = value;
-	upper.pspec[0].range[2] = upper.pspec[0].range[1] - value;
-	lower.pspec[1] = upper.pspec[1];
-    } else {
-	lower.pspec[0] = upper.pspec[0];
-	lower.pspec[1].range[0] = upper.pspec[1].range[0];
-	lower.pspec[1].range[1] = value;
-	lower.pspec[1].range[2] = value - upper.pspec[1].range[0];
-	upper.pspec[1].range[0] = value;
-	upper.pspec[1].range[2] = upper.pspec[1].range[1] - value;
-    }
-}
-
-Patchlist::~Patchlist()
-{
-    while( patch ) {
-	Patch *p = patch;
-	patch = patch->next;
-	delete p;
-    }
-}
-
-int
-Patchlist::cullCheck( void )
-{
-    for( Patch *p = patch; p; p = p->next )
-	if( p->cullCheck() == CULL_TRIVIAL_REJECT )
-	    return CULL_TRIVIAL_REJECT;
-    return CULL_ACCEPT;
-}
-
-void
-Patchlist::getRanges(REAL ranges[4])
-{
-  ranges[0] = pspec[0].range[0];
-  ranges[1] = pspec[0].range[1];
-  ranges[2] = pspec[1].range[0];
-  ranges[3] = pspec[1].range[1];
-}
-
-void
-Patchlist::getstepsize( void )
-{
-    pspec[0].stepsize    = pspec[0].range[2];
-    pspec[0].sidestep[0] = pspec[0].range[2];
-    pspec[0].sidestep[1] = pspec[0].range[2];
-
-    pspec[1].stepsize    = pspec[1].range[2];
-    pspec[1].sidestep[0] = pspec[1].range[2];
-    pspec[1].sidestep[1] = pspec[1].range[2];
-
-    for( Patch *p = patch; p; p = p->next ) {
-	p->getstepsize();
-	p->clamp();
-	pspec[0].stepsize    =  ((p->pspec[0].stepsize < pspec[0].stepsize) ? p->pspec[0].stepsize : pspec[0].stepsize);
-	pspec[0].sidestep[0] =  ((p->pspec[0].sidestep[0] < pspec[0].sidestep[0]) ? p->pspec[0].sidestep[0] : pspec[0].sidestep[0]);
-	pspec[0].sidestep[1] =  ((p->pspec[0].sidestep[1] < pspec[0].sidestep[1]) ? p->pspec[0].sidestep[1] : pspec[0].sidestep[1]);
-	pspec[1].stepsize    =  ((p->pspec[1].stepsize < pspec[1].stepsize) ? p->pspec[1].stepsize : pspec[1].stepsize);
-	pspec[1].sidestep[0] =  ((p->pspec[1].sidestep[0] < pspec[1].sidestep[0]) ? p->pspec[1].sidestep[0] : pspec[1].sidestep[0]);
-	pspec[1].sidestep[1] =  ((p->pspec[1].sidestep[1] < pspec[1].sidestep[1]) ? p->pspec[1].sidestep[1] : pspec[1].sidestep[1]);
-    }
-}
-
-void
-Patchlist::bbox( void )
-{
-    for( Patch *p = patch; p; p = p->next )
-	p->bbox();
-}
-
-int
-Patchlist::needsNonSamplingSubdivision( void )
-{
-    notInBbox = 0;
-    for( Patch *p = patch; p; p = p->next )
-	notInBbox |= p->needsNonSamplingSubdivision();
-    return notInBbox;
-}
-
-int
-Patchlist::needsSamplingSubdivision( void )
-{
-    pspec[0].needsSubdivision = 0;
-    pspec[1].needsSubdivision = 0;
-
-    for( Patch *p = patch; p; p = p->next ) {
-	pspec[0].needsSubdivision |= p->pspec[0].needsSubdivision;
-	pspec[1].needsSubdivision |= p->pspec[0].needsSubdivision;
-    }
-    return (pspec[0].needsSubdivision || pspec[1].needsSubdivision) ? 1 : 0;
-}
-
-int
-Patchlist::needsSubdivision( int param )
-{
-    return pspec[param].needsSubdivision;
-}
diff --git a/src/glu/sgi/libnurbs/internals/patchlist.h b/src/glu/sgi/libnurbs/internals/patchlist.h
deleted file mode 100644
index 9bfc5b47a24..00000000000
--- a/src/glu/sgi/libnurbs/internals/patchlist.h
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * patchlist.h
- *
- */
-
-#ifndef __glupatchlist_h_
-#define __glupatchlist_h_
-
-#include "types.h"
-#include "defines.h"
-#include "patch.h"
-
-class Quilt;
-
-class Patchlist {
-friend class Subdivider;
-public:
-    			Patchlist( Quilt *, REAL *, REAL * );
-    			Patchlist( Patchlist &, int ,  REAL );
-    			~Patchlist();	
-    void		bbox();
-    int			cullCheck( void );
-    void		getstepsize( void );
-    int			needsNonSamplingSubdivision( void );
-    int			needsSamplingSubdivision( void );
-    int			needsSubdivision( int );
-    REAL		getStepsize( int );
-    void                getRanges(REAL ranges[4]);
-
-    int                 get_uorder();
-    int                 get_vorder();
-private:
-    Patch		*patch;
-    int			notInBbox;
-    int			needsSampling;
-    Pspec		pspec[2];
-};
-
-inline REAL
-Patchlist::getStepsize( int param )
-{
-    return pspec[param].stepsize;
-}
-
-inline int
-Patchlist::get_uorder()
-{  
-   return patch->get_uorder();
-
-}
-
-inline int
- Patchlist::get_vorder()
-{ 
-  return patch->get_vorder();
-}
-
-
-
-
-
-#endif /* __glupatchlist_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/pwlarc.h b/src/glu/sgi/libnurbs/internals/pwlarc.h
deleted file mode 100644
index 2e5175a6f33..00000000000
--- a/src/glu/sgi/libnurbs/internals/pwlarc.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * pwlarc.h
- *
- */
-
-#ifndef __glupwlarc_h_
-#define __glupwlarc_h_
-
-#include "myassert.h"
-#include "nurbsconsts.h"
-
-class TrimVertex;
-
-class PwlArc : public PooledObj { /* a piecewise-linear arc */
-public:
-    TrimVertex *	pts;		/* sample points */
-    int			npts;		/* number of sample points */
-    long		type;		/* curve type */
-    inline		PwlArc( void );
-    inline		PwlArc( int, TrimVertex * );
-    inline		PwlArc( int, TrimVertex *, long );
-};
-
-inline
-PwlArc::PwlArc( void )
-{
-    type = N_P2D;
-    pts = 0;
-    npts = -1;
-}
-
-inline
-PwlArc::PwlArc( int _npts, TrimVertex *_pts )
-{
-    pts = _pts;
-    npts = _npts;
-    type = N_P2D;
-}
-
-inline
-PwlArc::PwlArc( int _npts, TrimVertex *_pts, long _type )
-{
-    pts = _pts;
-    npts = _npts;
-    type = _type;
-}
-
-#endif /* __glupwlarc_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/quilt.cc b/src/glu/sgi/libnurbs/internals/quilt.cc
deleted file mode 100644
index d16f4bfec02..00000000000
--- a/src/glu/sgi/libnurbs/internals/quilt.cc
+++ /dev/null
@@ -1,274 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * quilt.c++
- *
- */
-
-#include "glimports.h"
-#include "mystdio.h"
-#include "myassert.h"
-#include "quilt.h"
-#include "backend.h"
-#include "mapdesc.h"
-#include "flist.h"
-#include "patchlist.h"
-#include "simplemath.h" //min()
-
-/* local preprocessor definitions */
-#define DEF_PATCH_STEPSIZE	.4
-#define fsizeof(x)		(sizeof(x)/sizeof(REAL))
-
-
-Quilt::Quilt( Mapdesc *_mapdesc )
-{
-    mapdesc = _mapdesc;
-}
- 
-void
-Quilt::deleteMe( Pool& p )
-{
-    for( Quiltspec *q=qspec; q != eqspec; q++ ) {
-#if 1
-	if( q->breakpoints) delete[] q->breakpoints;  q->breakpoints = 0;
-#else
-	if( q->breakpoints) {
-	   delete[] q->breakpoints;  
-	   q->breakpoints = 0;
-printf("in here\n");
-        }
-#endif
-    }
-    if( cpts ) delete[] cpts;  
-    cpts = 0;
-    PooledObj::deleteMe( p );
-}
-
-void
-Quilt::show( void )
-{
-#ifndef NDEBUG
-    int nc = mapdesc->getNcoords();
-    REAL *ps  = cpts; 
-    ps += qspec[0].offset;
-    ps += qspec[1].offset;
-    for( int i=0; i!= qspec[0].order * qspec[0].width; i++ ) {
-	for( int j = 0; j!= qspec[1].order * qspec[1].width; j++ ) {
-	    for( int k=0; k < nc; k++ )
-		_glu_dprintf(  "%g ", ps[i*qspec[0].stride + j*qspec[1].stride + k] );
-	    _glu_dprintf(  "\n" );
-	}
-	_glu_dprintf(  "\n" );
-    }
-    _glu_dprintf( "\n" );
-#endif
-}
-
-/*--------------------------------------------------------------------------
- * Quilt::select - find which map in each quilt contains the points
- *			pta and ptb with pta[i] < ptb[i]
- *--------------------------------------------------------------------------
- */
-
-void
-Quilt::select( REAL *pta, REAL *ptb )
-{
-    int dim = eqspec - qspec; 
-    int i, j;
-    for( i=0; i<dim; i++) {
-	for( j=qspec[i].width-1; j>=0; j-- )
-	    if( (qspec[i].breakpoints[j] <= pta[i]   ) &&
-	    	(ptb[i] <= qspec[i].breakpoints[j+1] ) ) 
-		 break;
-	assert( j != -1 ); 
-	qspec[i].index = j;
-    }
-}
-
-void 
-Quilt::download( Backend &backend )
-{
-    if( getDimension() == 2 ) {
-	REAL *ps  = cpts; 
-	ps += qspec[0].offset;
-	ps += qspec[1].offset;
-	ps += qspec[0].index * qspec[0].order * qspec[0].stride;
-	ps += qspec[1].index * qspec[1].order * qspec[1].stride;
-	backend.surfpts( mapdesc->getType(), ps, 
-		  qspec[0].stride,
-		  qspec[1].stride,
-		  qspec[0].order,
-		  qspec[1].order,
-		  qspec[0].breakpoints[qspec[0].index],
-		  qspec[0].breakpoints[qspec[0].index+1],
-		  qspec[1].breakpoints[qspec[1].index],
-		  qspec[1].breakpoints[qspec[1].index+1] );
-    } else {
-	REAL *ps  = cpts; 
-	ps += qspec[0].offset;
-	ps += qspec[0].index * qspec[0].order * qspec[0].stride;
-	backend.curvpts( mapdesc->getType(), ps, 
-		      qspec[0].stride,
-		      qspec[0].order,
-		      qspec[0].breakpoints[qspec[0].index],
-		      qspec[0].breakpoints[qspec[0].index+1] );
-    }
-}
-
-/*--------------------------------------------------------------------------
- * Quilt::downloadAll - download each map that contains the current patch
- *--------------------------------------------------------------------------
- */
-
-void
-Quilt::downloadAll( REAL *pta, REAL *ptb, Backend &backend )
-{
-    for( Quilt *m = this; m; m=m->next ) {
-	m->select( pta, ptb );
-	m->download( backend );
-    }
-}
-
-/*--------------------------------------------------------------------------
-  * Quilt::isCulled - determine if an entire quilt is trivially rejected.
- *--------------------------------------------------------------------------
- */
-
-int
-Quilt::isCulled( void )
-{
-    if( mapdesc->isCulling() )
-	return mapdesc->xformAndCullCheck( cpts + qspec[0].offset + qspec[1].offset,
-			qspec[0].order * qspec[0].width, qspec[0].stride, 
-			qspec[1].order * qspec[1].width, qspec[1].stride );
-    else
-	return CULL_ACCEPT;
-}
-
-/*---------------------------------------------------------------------------
- * Quilt::getRange - retrieve the valid paramater range of a set of quilts
- *---------------------------------------------------------------------------
- */
-void
-Quilt::getRange( REAL *from, REAL *to, Flist& slist, Flist &tlist )
-{
-    getRange( from, to, 0, slist );
-    getRange( from, to, 1, tlist );
-}
-
-/*---------------------------------------------------------------------------
- * Quilt::getRange - retrieve the valid paramater range of a set of quilts
- *---------------------------------------------------------------------------
- */
-void
-Quilt::getRange( REAL *from, REAL *to, int i, Flist &list )
-{
-    Quilt *maps = this;
-    from[i] = maps->qspec[i].breakpoints[0];
-    to[i]   = maps->qspec[i].breakpoints[maps->qspec[i].width];
-    int maxpts = 0;
-    Quilt_ptr m;    
-    for( m=maps; m; m=m->next ) {
-	if( m->qspec[i].breakpoints[0] > from[i] ) 
-	    from[i] = m->qspec[i].breakpoints[0]; 
-	if( m->qspec[i].breakpoints[m->qspec[i].width] < to[i] ) 
-	    to[i] = m->qspec[i].breakpoints[m->qspec[i].width]; 
-	maxpts += m->qspec[i].width + 1;
-    }
-
-    list.grow( maxpts );
-
-    for( m=maps; m; m=m->next )
-	for( int j=0; j<=m->qspec[i].width; j++ ) {
-	    list.add( m->qspec[i].breakpoints[j] );
-	}
-
-    list.filter( );
-    list.taper( from[i], to[i] );
-}
-
-void
-Quilt::getRange( REAL *from, REAL *to, Flist& slist )
-{
-    getRange( from, to, 0, slist );
-}
-
-void
-Quilt::findRates( Flist& slist, Flist& tlist, REAL rate[2] )
-{
-    findSampleRates( slist, tlist );
-    rate[0] = qspec[0].step_size;
-    rate[1] = qspec[1].step_size;
-
-    for( Quilt *q = next; q; q = q->next ) {
-	q->findSampleRates( slist, tlist );
-	if( q->qspec[0].step_size < rate[0] ) 
-	    rate[0] = q->qspec[0].step_size;
-	if( q->qspec[1].step_size < rate[1] ) 
-	    rate[1] = q->qspec[1].step_size;
-    }
-}
-
-void
-Quilt::findSampleRates( Flist& slist, Flist& tlist )
-{
-    qspec[0].step_size = DEF_PATCH_STEPSIZE * 
-	    (qspec[0].breakpoints[qspec[0].width] - qspec[0].breakpoints[0]); 
-    qspec[1].step_size = DEF_PATCH_STEPSIZE * 
-	    (qspec[1].breakpoints[qspec[1].width] - qspec[1].breakpoints[0]); 
- 
-    for( int i = slist.start; i < slist.end-1; i++ ) {
-	for( int j = tlist.start; j < tlist.end-1; j++ ) {
-
-	    REAL pta[2], ptb[2];
-	    pta[0] = slist.pts[i];
-	    ptb[0] = slist.pts[i+1];
-	    pta[1] = tlist.pts[j];
-	    ptb[1] = tlist.pts[j+1];
-	    Patchlist patchlist( this, pta, ptb );
-	    patchlist.getstepsize();
-	    
-	    {
-	    float edge_len_s = min(glu_abs(ptb[0]-pta[0]),1.0);
-	    float edge_len_t = min(glu_abs(ptb[1]-pta[1]),1.0);
-
-	    if( patchlist.getStepsize(0)/edge_len_s < qspec[0].step_size ) 
-	       qspec[0].step_size = patchlist.getStepsize(0)/edge_len_s;
-	    if( patchlist.getStepsize(1)/edge_len_t < qspec[1].step_size ) 
-	      qspec[1].step_size = patchlist.getStepsize(1)/edge_len_t;
-	    }
-	}
-    }
-}
diff --git a/src/glu/sgi/libnurbs/internals/quilt.h b/src/glu/sgi/libnurbs/internals/quilt.h
deleted file mode 100644
index fe1e3309ead..00000000000
--- a/src/glu/sgi/libnurbs/internals/quilt.h
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * quilt.h
- *
- */
-
-#ifndef __gluquilt_h_
-#define __gluquilt_h_
-
-#include "defines.h"
-#include "bufpool.h"
-#include "types.h"
-
-class Backend;
-class Mapdesc;
-class Flist;
-struct Knotvector;
-
-/* constants for memory allocation of NURBS to Bezier conversion */ 
-#define	MAXDIM 		2
-
-struct Quiltspec { /* a specification for a dimension of a quilt */
-    int			stride;		/* words between points */
-    int			width;		/* number of segments */
-    int			offset;		/* words to first point */
-    int			order;		/* order */
-    int			index;		/* current segment number */
-    int			bdry[2];	/* boundary edge flag */
-    REAL  		step_size;
-    Knot *		breakpoints;
-};
-
-typedef Quiltspec *Quiltspec_ptr;
-    
-class Quilt : public PooledObj { /* an array of bezier patches */
-public:
-    			Quilt( Mapdesc * );
-    Mapdesc *		mapdesc;	/* map descriptor */
-    REAL *		cpts;		/* control points */
-    Quiltspec		qspec[MAXDIM];	/* the dimensional data */
-    Quiltspec_ptr	eqspec;		/* qspec trailer */
-    Quilt		*next;		/* next quilt in linked list */
-			
-public:
-    void		deleteMe( Pool& );
-    void		toBezier( Knotvector &, INREAL *, long  );
-    void		toBezier( Knotvector &, Knotvector &, INREAL *, long  );
-    void		select( REAL *, REAL * );
-    int			getDimension( void ) { return eqspec - qspec; }
-    void 		download( Backend & );
-    void		downloadAll( REAL *, REAL *, Backend & );
-    int 		isCulled( void );
-    void		getRange( REAL *, REAL *, Flist&, Flist & );
-    void		getRange( REAL *, REAL *, int, Flist & );
-    void		getRange( REAL *, REAL *, Flist&  );
-    void		findRates( Flist& slist, Flist& tlist, REAL[2] );
-    void		findSampleRates( Flist& slist, Flist& tlist );
-    void		show();
-};
-
-typedef class Quilt *Quilt_ptr;
-
-#endif /* __gluquilt_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/reader.cc b/src/glu/sgi/libnurbs/internals/reader.cc
deleted file mode 100644
index c59240d26ab..00000000000
--- a/src/glu/sgi/libnurbs/internals/reader.cc
+++ /dev/null
@@ -1,148 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- *  reader.c++
- *
- */
-
-#include <stdio.h>
-#include "glimports.h"
-#include "nurbsconsts.h"
-#include "reader.h"
-#include "trimvertex.h"
-#include "simplemath.h"
-
-//when read a pwlCurve, if two consecutive points are the same, then 
-//eliminate one of them. This makes the tessellator more robust. The spec
-//assumes the application makes sure there are no redundant points. 
-//but in Inspector, the trim curves seem to have redundant points a lot.
-//I guess other similar users may have the same problem.
-
-#define ELIMINATE_REDUNDANT_POINTS 
-
-#ifdef  ELIMINATE_REDUNDANT_POINTS 
-#define equal(x,y) ( glu_abs(x-y) <= 0.00001)
-#endif
-
-#ifdef ELIMINATE_REDUNDANT_POINTS 
-O_pwlcurve::O_pwlcurve( long _type, long count, INREAL *array, long byte_stride, TrimVertex *trimpts )
-{
-    next = 0;
-    used = 0;
-    owner = 0;
-    pts = trimpts;
-    npts = (int) count;
-    save = 0;
-    int i;
-
-    /* copy user data into internal trimming data structures */
-    switch( _type ) {
-        case N_P2D: {
-	    TrimVertex *v = pts;
-            TrimVertex *prev = NULL;
-	    int num = 0;
-	    int doit;
-	    for(i=0; i<count; i++) {
-	        doit = 1;
-         	if(prev != NULL)
-		  {
-		    if(equal(prev->param[0], array[0]) && equal(prev->param[1], array[1]))
-		      {
-			doit = 0;
-		      }
-		  }
-		
-		if(doit)
-		  {
-		    v->param[0] = (REAL) array[0];
-		    v->param[1] = (REAL) array[1];
-		    prev = v;
-		    v++;
-                    num++;
-		  }
-		array = (INREAL *) (((char *) array) + byte_stride);
-	      }
-	    npts = num;
-	    break;
-	}
-        case N_P2DR: {
-	    TrimVertex *v = pts;
-    	    for( TrimVertex *lastv = v + count; v != lastv; v++ ) {
-	        v->param[0] = (REAL) array[0] / (REAL) array[2];
-	        v->param[1] = (REAL) array[1] / (REAL) array[2];
-		array = (INREAL *) (((char *) array) + byte_stride);
-	    }
-	    break;
-	}
-    }
-}
-#else
-O_pwlcurve::O_pwlcurve( long _type, long count, INREAL *array, long byte_stride, TrimVertex *trimpts )
-{
-    next = 0;
-    used = 0;
-    owner = 0;
-    pts = trimpts;
-    npts = (int) count;
-    save = 0;
-
-    /* copy user data into internal trimming data structures */
-    switch( _type ) {
-        case N_P2D: {
-	    TrimVertex *v = pts;
-    	    for( TrimVertex *lastv = v + count; v != lastv; v++ ) {
-	        v->param[0] = (REAL) array[0];
-	        v->param[1] = (REAL) array[1];
-		array = (INREAL *) (((char *) array) + byte_stride);
-	    }
-	    break;
-	}
-        case N_P2DR: {
-	    TrimVertex *v = pts;
-    	    for( TrimVertex *lastv = v + count; v != lastv; v++ ) {
-	        v->param[0] = (REAL) array[0] / (REAL) array[2];
-	        v->param[1] = (REAL) array[1] / (REAL) array[2];
-		array = (INREAL *) (((char *) array) + byte_stride);
-	    }
-	    break;
-	}
-    }
-}
-#endif 
-
-
-
-
-
diff --git a/src/glu/sgi/libnurbs/internals/reader.h b/src/glu/sgi/libnurbs/internals/reader.h
deleted file mode 100644
index cae6cada468..00000000000
--- a/src/glu/sgi/libnurbs/internals/reader.h
+++ /dev/null
@@ -1,132 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * reader.h
- *
- */
-
-#ifndef __glureader_h_
-#define __glureader_h_
-
-#include "bufpool.h"
-#include "types.h"
-
-enum Curvetype { ct_nurbscurve, ct_pwlcurve, ct_none };
-    
-struct Property;
-struct O_surface;
-struct O_nurbssurface;
-struct O_trim;
-class O_pwlcurve;
-struct O_nurbscurve;
-struct O_curve;
-class  Quilt;
-class TrimVertex;
-
-
-struct O_curve : public PooledObj {
-    union {
-        O_nurbscurve	*o_nurbscurve;
-        O_pwlcurve	*o_pwlcurve;
-    } curve;
-    Curvetype		curvetype;	/* arc type: pwl or nurbs	*/
-    O_curve *		next;		/* next arc in loop		*/
-    O_surface *		owner;		/* owning surface		*/
-    int			used;		/* curve called in cur surf	*/
-    int			save;		/* 1 if in display list		*/
-    long		nuid;
-    			O_curve() { next = 0; used = 0; owner = 0; 
-				    curve.o_pwlcurve = 0; curvetype = ct_none; save = 0; nuid = 0; }
-    };
-
-struct O_nurbscurve : public PooledObj {
-    Quilt		*bezier_curves;	/* array of bezier curves	*/
-    long		type;		/* range descriptor		*/
-    REAL		tesselation;	/* tesselation tolerance 	*/
-    int			method;		/* tesselation method 		*/
-    O_nurbscurve *	next;		/* next curve in list		*/
-    int			used;		/* curve called in cur surf	*/
-    int			save;		/* 1 if in display list		*/
-    O_curve *		owner;		/* owning curve 		*/
-			O_nurbscurve( long _type ) 
-			   { bezier_curves = 0; type = _type; tesselation = 0; method = 0; next = 0; used = 0; save = 0; owner = 0; }
-    };
- 
-class O_pwlcurve : public PooledObj {
-public:
-    TrimVertex		*pts;		/* array of trim vertices	*/
-    int			npts;		/* number of trim vertices	*/
-    O_pwlcurve *	next;		/* next curve in list		*/
-    int			used;		/* curve called in cur surf	*/
-    int			save;		/* 1 if in display list		*/
-    O_curve *		owner;		/* owning curve 		*/
-			O_pwlcurve( long, long, INREAL *, long, TrimVertex * );
-    };
-
-struct O_trim : public PooledObj {
-    O_curve		*o_curve;	/* closed trim loop	 	*/
-    O_trim *		next;		/* next loop along trim 	*/
-    int			save;		/* 1 if in display list		*/
-			O_trim() { next = 0; o_curve = 0; save = 0; }
-    };
-
-struct O_nurbssurface : public PooledObj {
-    Quilt *		bezier_patches;/* array of bezier patches	*/
-    long		type;		/* range descriptor		*/
-    O_surface *		owner;		/* owning surface		*/
-    O_nurbssurface *	next;		/* next surface in chain	*/
-    int			save;		/* 1 if in display list		*/
-    int			used;		/* 1 if prev called in block	*/
-			O_nurbssurface( long _type ) 
-			   { bezier_patches = 0; type = _type; owner = 0; next = 0; save = 0; used = 0; }
-    };
-
-struct O_surface : public PooledObj {
-    O_nurbssurface *	o_nurbssurface;	/* linked list of surfaces	*/
-    O_trim *		o_trim;		/* list of trim loops		*/
-    int			save;		/* 1 if in display list		*/
-    long		nuid;
-			O_surface() { o_trim = 0; o_nurbssurface = 0; save = 0; nuid = 0; }
-    };
-
-struct Property : public PooledObj {
-    long		type;
-    long		tag;
-    REAL		value;
-    int			save;		/* 1 if in display list		*/
-			Property( long _type, long _tag, INREAL _value )
-			{ type = _type; tag = _tag; value = (REAL) _value; save = 0; }
-			Property( long _tag, INREAL _value )
-			{ type = 0; tag = _tag; value = (REAL) _value; save = 0; }
-    };
-
-class NurbsTessellator;
-#endif /* __glureader_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/renderhints.cc b/src/glu/sgi/libnurbs/internals/renderhints.cc
deleted file mode 100644
index 4b347ebc7f5..00000000000
--- a/src/glu/sgi/libnurbs/internals/renderhints.cc
+++ /dev/null
@@ -1,136 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * renderhints.c++
- *
- */
-
-#include "glimports.h"
-#include "mystdio.h"
-#include "renderhints.h"
-#include "nurbsconsts.h"
-
-
-/*--------------------------------------------------------------------------
- * Renderhints::Renderhints - set all window specific options
- *--------------------------------------------------------------------------
- */
-Renderhints::Renderhints()
-{
-    display_method 	= N_FILL;
-    errorchecking 	= N_MSG;
-    subdivisions 	= 6.0;
-    tmp1 		= 0.0;
-    displaydomain 	= 0;
-    maxsubdivisions 	= (int) subdivisions;
-    wiretris	 	= 0;
-    wirequads	 	= 0;
-}
-
-void
-Renderhints::init( void )
-{
-    maxsubdivisions = (int) subdivisions;
-    if( maxsubdivisions < 0 ) maxsubdivisions = 0;
-
-
-    if( display_method == N_FILL ) {
-	wiretris = 0;
-	wirequads = 0;
-    } else if( display_method == N_OUTLINE_TRI ) {
-	wiretris = 1;
-	wirequads = 0;
-    } else if( display_method == N_OUTLINE_QUAD ) {
-	wiretris = 0;
-	wirequads = 1;
-    } else {
-	wiretris = 1;
-	wirequads = 1;
-    }
-}
-
-int
-Renderhints::isProperty( long property )
-{
-    switch ( property ) {
-	case N_DISPLAY:
-	case N_ERRORCHECKING:
-	case N_SUBDIVISIONS:
-        case N_TMP1:
-	    return 1;
-	default:
-	    return 0;
-    }
-}
-
-REAL 
-Renderhints::getProperty( long property )
-{
-    switch ( property ) {
-	case N_DISPLAY:
-	    return display_method;
-	case N_ERRORCHECKING:
-	    return errorchecking;
-	case N_SUBDIVISIONS:
-	    return subdivisions;
-        case N_TMP1:
-	    return tmp1;
-	default:
-	    abort();
-	    return -1;  //not necessary, needed to shut up compiler
-    }
-}
-
-void 
-Renderhints::setProperty( long property, REAL value )
-{
-    switch ( property ) {
-	case N_DISPLAY:
-	    display_method = value;
-	    break;
-	case N_ERRORCHECKING:
-	    errorchecking = value;
-	    break;
-	case N_SUBDIVISIONS:
-	    subdivisions = value;
-	    break;
-	case N_TMP1: /* unused */
-	    tmp1 = value;
-	    break;
-	default:
-	    abort();
-	    break;
-    }
-}
diff --git a/src/glu/sgi/libnurbs/internals/renderhints.h b/src/glu/sgi/libnurbs/internals/renderhints.h
deleted file mode 100644
index 444f649be23..00000000000
--- a/src/glu/sgi/libnurbs/internals/renderhints.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * renderhints.h
- *
- */
-
-#ifndef __glurenderhints_h_
-#define __glurenderhints_h_
-
-#include "types.h"
-
-class Renderhints {
-public:
-    			Renderhints( void );
-    void		init( void );
-    int			isProperty( long );
-    REAL 		getProperty( long );
-    void		setProperty( long, REAL );
-
-    REAL 		display_method;		/* display mode */
-    REAL 		errorchecking;		/* activate error checking */
-    REAL 		subdivisions;		/* maximum number of subdivisions per patch */
-    REAL 		tmp1;			/* unused */
-
-    int			displaydomain;
-    int			maxsubdivisions;
-    int			wiretris;
-    int			wirequads;
-};
-
-#endif /* __glurenderhints_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/simplemath.h b/src/glu/sgi/libnurbs/internals/simplemath.h
deleted file mode 100644
index d00062dc700..00000000000
--- a/src/glu/sgi/libnurbs/internals/simplemath.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * simplemath.h
- *
- */
-
-#ifndef __glusimplemath_h_
-#define __glusimplemath_h_
-
-/* simple inline routines */
-
-#include "types.h"
-
-inline int 
-max( int x, int y ) { return ( x < y ) ? y : x; }
-
-inline REAL 
-min( REAL x, REAL y ) { return ( x > y ) ? y : x; }
-
-inline REAL 
-glu_abs( REAL x ) { return ( x < 0.0 ) ? -x : x; }
-
-#endif /* __glusimplemath_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/slicer.cc b/src/glu/sgi/libnurbs/internals/slicer.cc
deleted file mode 100644
index 1b18d73c176..00000000000
--- a/src/glu/sgi/libnurbs/internals/slicer.cc
+++ /dev/null
@@ -1,1304 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * slicer.c++
- *
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <math.h>
-#include "glimports.h"
-#include "mystdio.h"
-#include "myassert.h"
-#include "bufpool.h"
-#include "slicer.h"
-#include "backend.h"
-#include "arc.h"
-#include "gridtrimvertex.h"
-#include "simplemath.h"
-#include "trimvertex.h"
-#include "varray.h"
-
-#include "polyUtil.h" //for area()
-
-//static int count=0;
-
-/*USE_OPTTT is initiated in trimvertex.h*/
-
-#ifdef USE_OPTTT
-	#include <GL/gl.h>
-#endif
-
-//#define USE_READ_FLAG //whether to use new or old tesselator
-                          //if defined, it reads "flagFile", 
-                          // if the number is 1, then use new tess
-                          // otherwise, use the old tess.
-                         //if not defined, then use new tess.
-#ifdef USE_READ_FLAG
-static Int read_flag(char* name);
-Int newtess_flag = read_flag("flagFile");
-#endif
-
-//#define COUNT_TRIANGLES
-#ifdef COUNT_TRIANGLES
-Int num_triangles = 0;
-Int num_quads = 0;
-#endif
-
-#define max(a,b) ((a>b)? a:b)
-#define ZERO 0.00001 /*determing whether a loop is a rectngle or not*/
-#define equalRect(a,b) ((glu_abs(a-b) <= ZERO)? 1:0) //only used in tessellating a rectangle
-
-#if 0 // UNUSED
-static Int is_Convex(Arc_ptr loop)
-{
-  if(area(loop->tail(), loop->head(), loop->next->head()) <0 )
-    return 0;
-  for(Arc_ptr jarc = loop->next; jarc != loop; jarc = jarc->next)
-    {
-      if(area(jarc->tail(), jarc->head(), jarc->next->head()) < 0)
-	return 0;
-    }
-  return 1;
-}
-#endif
-
-/******triangulate a monotone polygon**************/
-#include "monoTriangulation.h"
-#if 0 // UNUSED
-static int is_U_monotone(Arc_ptr loop)
-{
-  int n_changes=0;
-  int prev_sign;
-  int cur_sign;
-  Arc_ptr temp;
-
-  cur_sign = compV2InX(loop->head(), loop->tail());
-
-  n_changes  = (compV2InX(loop->prev->head(), loop->prev->tail())
-		!= cur_sign);
-
-  for(temp=loop->next; temp != loop; temp = temp->next)
-    {
-      prev_sign = cur_sign;
-      cur_sign = compV2InX(temp->head(), temp->tail());
-      if(cur_sign != prev_sign)
-       {
-#ifdef DEBUG
-	 printf("***change signe\n");
-#endif
-	 n_changes++;
-       }
-    }
-  if(n_changes == 2) return 1;
-  else
-    return 0;
-}
-#endif
-
-inline int compInY(REAL a[2], REAL b[2])
-{
-  if(a[1] < b[1])
-    return -1;
-  else if (a[1] > b[1])
-    return 1;
-  else if(a[0] > b[0])
-    return 1;
-  else return -1;
-}
-
-void monoTriangulationLoop(Arc_ptr loop, Backend& backend, primStream* pStream)
-{
-  int i;
-  //find the top, bottom, increasing and decreasing chain
-  //then call monoTrianulation
-  Arc_ptr jarc, temp;
-  Arc_ptr top;
-  Arc_ptr bot;
-  top = bot = loop;
-  if(compInY(loop->tail(), loop->prev->tail()) < 0)
-    {
-      //first find bot
-      for(temp = loop->next; temp != loop; temp = temp->next)
-	{
-	  if(compInY(temp->tail(), temp->prev->tail()) > 0)
-	    break;
-	}
-      bot = temp->prev;
-      //then find top
-      for(temp=loop->prev; temp != loop; temp = temp->prev)
-	{
-	  if(compInY(temp->tail(), temp->prev->tail()) > 0)
-	    break;
-	}
-      top = temp;
-    }
-  else //loop > loop->prev
-    {
-      for(temp=loop->next; temp != loop; temp = temp->next)
-	{
-	  if(compInY(temp->tail(), temp->prev->tail()) < 0)
-	    break;
-	}
-      top = temp->prev;
-      for(temp=loop->prev; temp != loop; temp = temp->prev)
-	{
-	  if(compInY(temp->tail(), temp->prev->tail()) < 0)
-	    break;
-	}
-      bot = temp;
-    }
-  //creat increase and decrease chains
-  vertexArray inc_chain(50); //this is a dynamci array
-  for(i=1; i<=top->pwlArc->npts-2; i++) 
-    {
-      //the first vertex is the top which doesn't below to inc_chain
-      inc_chain.appendVertex(top->pwlArc->pts[i].param);
-    }
-  for(jarc=top->next; jarc != bot; jarc = jarc->next)
-    {
-      for(i=0; i<=jarc->pwlArc->npts-2; i++)
-	{
-	  inc_chain.appendVertex(jarc->pwlArc->pts[i].param);
-	}
-      
-    }
-  vertexArray dec_chain(50);
-  for(jarc = top->prev; jarc != bot; jarc = jarc->prev)
-    {
-      for(i=jarc->pwlArc->npts-2; i>=0; i--)
-	{
-	  dec_chain.appendVertex(jarc->pwlArc->pts[i].param);
-	}
-    }
-  for(i=bot->pwlArc->npts-2; i>=1; i--)
-    {
-      dec_chain.appendVertex(jarc->pwlArc->pts[i].param);
-    }	  
-
-  monoTriangulationRec(top->tail(), bot->tail(), &inc_chain, 0,
-		       &dec_chain, 0, &backend);
-
-}
-
-/********tesselate a rectanlge (OPTIMIZATION**************/
-static void triangulateRectGen(Arc_ptr loop, int n_ulines, int n_vlines, Backend& backend);
-
-static Int is_rect(Arc_ptr loop)
-{
-  Int nlines =1;
-  for(Arc_ptr jarc = loop->next; jarc != loop; jarc = jarc->next)
-    {
-      nlines++;
-      if(nlines == 5)
-	break;
-    }
-  if(nlines != 4)
-    return 0;
-
-
-/*
-printf("here1\n");
-printf("loop->tail=(%f,%f)\n", loop->tail()[0], loop->tail()[1]);
-printf("loop->head=(%f,%f)\n", loop->head()[0], loop->head()[1]);
-printf("loop->next->tail=(%f,%f)\n", loop->next->tail()[0], loop->next->tail()[1]);
-printf("loop->next->head=(%f,%f)\n", loop->next->head()[0], loop->next->head()[1]);
-if(fglu_abs(loop->tail()[0] - loop->head()[0])<0.000001)
-	printf("equal 1\n");
-if(loop->next->tail()[1] == loop->next->head()[1])
-	printf("equal 2\n");
-*/
-
-  if( (glu_abs(loop->tail()[0] - loop->head()[0])<=ZERO) && 
-      (glu_abs(loop->next->tail()[1] - loop->next->head()[1])<=ZERO) &&
-      (glu_abs(loop->prev->tail()[1] - loop->prev->head()[1])<=ZERO) &&
-      (glu_abs(loop->prev->prev->tail()[0] - loop->prev->prev->head()[0])<=ZERO)
-     )
-    return 1;
-  else if
-    ( (glu_abs(loop->tail()[1] - loop->head()[1]) <= ZERO) && 
-      (glu_abs(loop->next->tail()[0] - loop->next->head()[0]) <= ZERO) &&
-      (glu_abs(loop->prev->tail()[0] - loop->prev->head()[0]) <= ZERO) &&
-      (glu_abs(loop->prev->prev->tail()[1] - loop->prev->prev->head()[1]) <= ZERO)
-     )
-      return 1;
-  else
-    return 0;
-}
-
-
-//a line with the same u for opt
-#ifdef USE_OPTTT
-static void evalLineNOGE_BU(TrimVertex *verts, int n, Backend& backend)
-{
-  int i;
-  backend.preEvaluateBU(verts[0].param[0]);
-  for(i=0; i<n; i++)
-    backend.tmeshvertNOGE_BU(&verts[i]);
-}
-#endif
-
-//a line with the same v for opt
-#ifdef USE_OPTTT
-static void evalLineNOGE_BV(TrimVertex *verts, int n, Backend& backend)
-{
-  int i;
-  backend.preEvaluateBV(verts[0].param[1]);
-
-  for(i=0; i<n; i++)
-    backend.tmeshvertNOGE_BV(&verts[i]);
-}
-#endif
-
-#ifdef USE_OPTTT
-static void evalLineNOGE(TrimVertex *verts, int n, Backend& backend)
-{
-
-  if(verts[0].param[0] == verts[n-1].param[0]) //all u;s are equal
-    evalLineNOGE_BU(verts, n, backend);
-  else if(verts[0].param[1] == verts[n-1].param[1]) //all v's are equal
-    evalLineNOGE_BV(verts, n, backend);
-  else
-    {
-      int i;
-      for(i=0; i<n; i++)
-	backend.tmeshvertNOGE(&verts[i]);
-    }
-}
-#endif
-
-inline void  OPT_OUTVERT(TrimVertex& vv, Backend& backend) 
-{
-
-#ifdef USE_OPTTT
-  glNormal3fv(vv.cache_normal);                         
-  glVertex3fv(vv.cache_point);
-#else
-
-  backend.tmeshvert(&vv);
-
-#endif
-
-}
-
-static void triangulateRectAux(PwlArc* top, PwlArc* bot, PwlArc* left, PwlArc* right, Backend& backend);
-
-static void triangulateRect(Arc_ptr loop, Backend& backend, int TB_or_LR, int ulinear, int vlinear)
-{
-  //we know the loop is a rectangle, but not sure which is top
-  Arc_ptr top, bot, left, right;
-  if(loop->tail()[1] == loop->head()[1])
-    {
-      if(loop->tail()[1] > loop->prev->prev->tail()[1])
-	{
-
-	top = loop;
-	}
-      else{
-
-	top = loop->prev->prev;
-	}
-    }
-  else 
-    {
-      if(loop->tail()[0] > loop->prev->prev->tail()[0])
-	{
-	  //loop is the right arc
-
-	  top = loop->next;
-	}
-      else
-	{
-
-	  top = loop->prev;
-	}
-    }
-  left = top->next;
-  bot  = left->next;
-  right= bot->next;
-
-  //if u, v are both nonlinear, then if the
-  //boundary is tessellated dense, we also
-  //sample the inside to get a better tesslletant.
-  if( (!ulinear) && (!vlinear))
-    {
-      int nu = top->pwlArc->npts;
-      if(nu < bot->pwlArc->npts)
-	nu = bot->pwlArc->npts;
-      int nv = left->pwlArc->npts;
-      if(nv < right->pwlArc->npts)
-	nv = right->pwlArc->npts;
-/*
-      if(nu > 2 && nv > 2)
-	{
-	  triangulateRectGen(top, nu-2,  nv-2, backend);
-	  return;
-	}
-*/
-    }
-
-  if(TB_or_LR == 1)
-    triangulateRectAux(top->pwlArc, bot->pwlArc, left->pwlArc, right->pwlArc, backend);
-  else if(TB_or_LR == -1)
-    triangulateRectAux(left->pwlArc, right->pwlArc, bot->pwlArc, top->pwlArc, backend);    
-  else
-    {
-      Int maxPointsTB = top->pwlArc->npts + bot->pwlArc->npts;
-      Int maxPointsLR = left->pwlArc->npts + right->pwlArc->npts;
-      
-      if(maxPointsTB < maxPointsLR)
-	triangulateRectAux(left->pwlArc, right->pwlArc, bot->pwlArc, top->pwlArc, backend);    
-      else
-	triangulateRectAux(top->pwlArc, bot->pwlArc, left->pwlArc, right->pwlArc, backend);
-    }
-}
-
-static void triangulateRectAux(PwlArc* top, PwlArc* bot, PwlArc* left, PwlArc* right, Backend& backend)
-{ //if(maxPointsTB >= maxPointsLR)
-    {
-
-      Int d, topd_left, topd_right, botd_left, botd_right, i,j;
-      d = left->npts /2;
-
-#ifdef USE_OPTTT
-      evalLineNOGE(top->pts, top->npts, backend);
-      evalLineNOGE(bot->pts, bot->npts, backend);
-      evalLineNOGE(left->pts, left->npts, backend);
-      evalLineNOGE(right->pts, right->npts, backend);
-#endif
-
-      if(top->npts == 2) {
-	backend.bgntfan();
-	OPT_OUTVERT(top->pts[0], backend);//the root
-	for(i=0; i<left->npts; i++){
-	  OPT_OUTVERT(left->pts[i], backend);
-	}
-	for(i=1; i<= bot->npts-2; i++){
-	  OPT_OUTVERT(bot->pts[i], backend);
-	}
-	backend.endtfan();
-	
-	backend.bgntfan();
-	OPT_OUTVERT(bot->pts[bot->npts-2], backend);
-	for(i=0; i<right->npts; i++){
-	  OPT_OUTVERT(right->pts[i], backend);
-	}
-	backend.endtfan();
-      }
-      else if(bot->npts == 2) {
-	backend.bgntfan();
-	OPT_OUTVERT(bot->pts[0], backend);//the root
-	for(i=0; i<right->npts; i++){
-	  OPT_OUTVERT(right->pts[i], backend);
-	}
-	for(i=1; i<= top->npts-2; i++){
-	  OPT_OUTVERT(top->pts[i], backend);
-	}
-	backend.endtfan();
-	
-	backend.bgntfan();
-	OPT_OUTVERT(top->pts[top->npts-2], backend);
-	for(i=0; i<left->npts; i++){
-	  OPT_OUTVERT(left->pts[i], backend);
-	}
-	backend.endtfan();
-      }
-      else { //both top and bot have >=3 points
-	
-	backend.bgntfan();
-	
-	OPT_OUTVERT(top->pts[top->npts-2], backend);
-	
-	for(i=0; i<=d; i++)
-	  {
-	    OPT_OUTVERT(left->pts[i], backend);	  
-	  }
-	backend.endtfan();
-	
-	backend.bgntfan();
-	
-	OPT_OUTVERT(bot->pts[1], backend);
-	
-	OPT_OUTVERT(top->pts[top->npts-2], backend);
-	
-	for(i=d; i< left->npts; i++)
-	  {      
-	    OPT_OUTVERT(left->pts[i], backend);      
-	  }
-	backend.endtfan();
-
-	d = right->npts/2;
-	//output only when d<right->npts-1 and
-	//
-	if(d<right->npts-1)
-	  {	
-	    backend.bgntfan();
-	    //      backend.tmeshvert(& top->pts[1]);
-	    OPT_OUTVERT(top->pts[1], backend);
-	    for(i=d; i< right->npts; i++)
-	      {
-		//	  backend.tmeshvert(& right->pts[i]);
-		
-		OPT_OUTVERT(right->pts[i], backend);
-		
-	      }
-	    backend.endtfan();
-	  }
-	
-	backend.bgntfan();
-	//      backend.tmeshvert(& bot->pts[bot->npts-2]);
-	OPT_OUTVERT( bot->pts[bot->npts-2], backend);
-	for(i=0; i<=d; i++)
-	  {
-	    //	  backend.tmeshvert(& right->pts[i]);
-	    OPT_OUTVERT(right->pts[i], backend);
-	    
-	  }
-	
-	//      backend.tmeshvert(& top->pts[1]);
-	OPT_OUTVERT(top->pts[1], backend);      
-	
-	backend.endtfan();
-
-
-	topd_left = top->npts-2;
-	topd_right = 1; //topd_left>= topd_right
-
-	botd_left = 1;
-	botd_right = bot->npts-2; //botd_left<= bot_dright
-
-	
-	if(top->npts < bot->npts)
-	  {
-	    int delta=bot->npts - top->npts;
-	    int u = delta/2;
-	    botd_left = 1+ u;
-	    botd_right = bot->npts-2-( delta-u);	    
-	
-	    if(botd_left >1)
-	      {
-		backend.bgntfan();
-		//	  backend.tmeshvert(& top->pts[top->npts-2]);
-		OPT_OUTVERT(top->pts[top->npts-2], backend);
-		for(i=1; i<= botd_left; i++)
-		  {
-		    //	      backend.tmeshvert(& bot->pts[i]);
-		    OPT_OUTVERT(bot->pts[i] , backend);
-		  }
-		backend.endtfan();
-	      }
-	    if(botd_right < bot->npts-2)
-	      {
-		backend.bgntfan();
-		OPT_OUTVERT(top->pts[1], backend);
-		for(i=botd_right; i<= bot->npts-2; i++)
-		  OPT_OUTVERT(bot->pts[i], backend);
-		backend.endtfan();
-	      }
-	  }
-	else if(top->npts> bot->npts)
-	  {
-	    int delta=top->npts-bot->npts;
-	    int u = delta/2;
-	    topd_left = top->npts-2 - u;
-	    topd_right = 1+delta-u;
-	    
-	    if(topd_left < top->npts-2)
-	      {
-		backend.bgntfan();
-		//	  backend.tmeshvert(& bot->pts[1]);
-		OPT_OUTVERT(bot->pts[1], backend);
-		for(i=topd_left; i<= top->npts-2; i++)
-		  {
-		    //	      backend.tmeshvert(& top->pts[i]);
-		    OPT_OUTVERT(top->pts[i], backend);
-		  }
-		backend.endtfan();
-	      }
-	    if(topd_right > 1)
-	      {
-		backend.bgntfan();
-		OPT_OUTVERT(bot->pts[bot->npts-2], backend);
-		for(i=1; i<= topd_right; i++)
-		  OPT_OUTVERT(top->pts[i], backend);
-		backend.endtfan();
-	      }
-	  }
-	
-	if(topd_left <= topd_right) 
-	  return;
-
-	backend.bgnqstrip();
-	for(j=botd_left, i=topd_left; i>=topd_right; i--,j++)
-	  {
-	    //	  backend.tmeshvert(& top->pts[i]);
-	    //	  backend.tmeshvert(& bot->pts[j]);
-	    OPT_OUTVERT(top->pts[i], backend);
-	    OPT_OUTVERT(bot->pts[j], backend);
-	  }
-	backend.endqstrip();
-	
-      }
-    }
-}
-
-  
-static void triangulateRectCenter(int n_ulines, REAL* u_val, 
-				  int n_vlines, REAL* v_val,
-				  Backend& backend)
-{
-
-  // XXX this code was patched by Diego Santa Cruz <[email protected]>
-  // to fix a problem in which glMapGrid2f() was called with bad parameters.
-  // This has beens submitted to SGI but not integrated as of May 1, 2001.
-  if(n_ulines>1 && n_vlines>1) {
-    backend.surfgrid(u_val[0], u_val[n_ulines-1], n_ulines-1, 
-                     v_val[n_vlines-1], v_val[0], n_vlines-1);
-    backend.surfmesh(0,0,n_ulines-1,n_vlines-1);
-  }
-
-  return;
-
-  /*
-  for(i=0; i<n_vlines-1; i++)
-    {
-
-      backend.bgnqstrip();
-      for(j=0; j<n_ulines; j++)
-	{
-	  trimVert.param[0] = u_val[j];
-	  trimVert.param[1] = v_val[i+1];
-	  backend.tmeshvert(& trimVert);	  
-
-	  trimVert.param[1] = v_val[i];
-	  backend.tmeshvert(& trimVert);	  
-	}
-      backend.endqstrip();
-
-    }
-    */
-}
-
-//it works for top, bot, left ad right, you need ot select correct arguments
-static void triangulateRectTopGen(Arc_ptr arc, int n_ulines, REAL* u_val, Real v, int dir, int is_u, Backend& backend)
-{
-
-  if(is_u)
-    {
-      int i,k;
-      REAL* upper_val = (REAL*) malloc(sizeof(REAL) * arc->pwlArc->npts);
-      assert(upper_val);
-      if(dir)
-	{
-	  for(k=0,i=arc->pwlArc->npts-1; i>=0; i--,k++)
-	    {
-	      upper_val[k] = arc->pwlArc->pts[i].param[0];
-	    }	
-	  backend.evalUStrip(arc->pwlArc->npts, arc->pwlArc->pts[0].param[1],
-			     upper_val,
-			     n_ulines, v, u_val);
-	}
-      else
-	{
-	  for(k=0,i=0;  i<arc->pwlArc->npts; i++,k++)
-	    {
-	      upper_val[k] = arc->pwlArc->pts[i].param[0];
-
-	    }		  
-
-	  backend.evalUStrip(
-			     n_ulines, v, u_val,
-			     arc->pwlArc->npts, arc->pwlArc->pts[0].param[1], upper_val
-			     );	 
-	}
-
-      free(upper_val);
-      return;
-    }
-  else //is_v
-    {
-      int i,k;
-      REAL* left_val = (REAL*) malloc(sizeof(REAL) * arc->pwlArc->npts);
-      assert(left_val);   
-      if(dir)
-	{
-	  for(k=0,i=arc->pwlArc->npts-1; i>=0; i--,k++)
-	    {
-	      left_val[k] = arc->pwlArc->pts[i].param[1];
-	    }
-	  backend.evalVStrip(arc->pwlArc->npts, arc->pwlArc->pts[0].param[0],
-			     left_val,
-			     n_ulines, v, u_val);
-	}
-      else 
-	{
-	  for(k=0,i=0;  i<arc->pwlArc->npts; i++,k++)
-	    {
-	      left_val[k] = arc->pwlArc->pts[i].param[1];
-	    }
-	   backend.evalVStrip(
-			     n_ulines, v, u_val,
-			     arc->pwlArc->npts, arc->pwlArc->pts[0].param[0], left_val
-			     );	
-	}
-      free(left_val);
-      return;
-    }
-	
-  //the following is a different version of the above code. If you comment
-  //the above code, the following code will still work. The reason to leave
-  //the folliwng code here is purely for testing purpose.
-  /*
-  int i,j;
-  PwlArc* parc = arc->pwlArc;
-  int d1 = parc->npts-1;
-  int d2 = 0;
-  TrimVertex trimVert;
-  trimVert.nuid = 0;//????
-  REAL* temp_u_val = u_val;
-  if(dir ==0) //have to reverse u_val
-    {
-      temp_u_val = (REAL*) malloc(sizeof(REAL) * n_ulines);
-      assert(temp_u_val);
-      for(i=0; i<n_ulines; i++)
-	temp_u_val[i] = u_val[n_ulines-1-i];
-    }
-  u_val = temp_u_val;
-
-  if(parc->npts > n_ulines)
-    {
-      d1 = n_ulines-1;
-
-      backend.bgntfan();
-      if(is_u){
-	trimVert.param[0] = u_val[0];
-	trimVert.param[1] = v;
-      }
-      else
-	{
-	trimVert.param[1] = u_val[0];
-	trimVert.param[0] = v;
-      }
-	  
-      backend.tmeshvert(& trimVert);
-      for(i=d1; i< parc->npts; i++)
-	backend.tmeshvert(& parc->pts[i]);
-      backend.endtfan();
-
-
-    }
-  else if(parc->npts < n_ulines)
-    {
-      d2 = n_ulines-parc->npts;
-
-
-      backend.bgntfan();
-      backend.tmeshvert(& parc->pts[parc->npts-1]);
-      for(i=0; i<= d2; i++)
-	{
-	  if(is_u){
-	    trimVert.param[0] = u_val[i];
-	    trimVert.param[1] = v;
-	  }
-	  else
-	    {
-	      trimVert.param[1] = u_val[i];
-	      trimVert.param[0] = v;
-	    }
-	  backend.tmeshvert(&trimVert);
-	}
-      backend.endtfan();
-
-    }
-  if(d1>0){
-
-
-    backend.bgnqstrip();
-    for(i=d1, j=d2; i>=0; i--, j++)
-      {
-	backend.tmeshvert(& parc->pts[i]);
-
-	if(is_u){
-	  trimVert.param[0] = u_val[j];
-	  trimVert.param[1] = v;
-	}
-	else{
-	  trimVert.param[1] = u_val[j];
-	  trimVert.param[0] = v;
-	}
-	backend.tmeshvert(&trimVert);
-
-
-	
-      }
-    backend.endqstrip();
-
-
-  }
-  if(dir == 0)  //temp_u_val was mallocated
-    free(temp_u_val);
- */
-}
-
-//n_ulines is the number of ulines inside, and n_vlines is the number of vlines
-//inside, different from meanings elsewhere!!!
-static void triangulateRectGen(Arc_ptr loop, int n_ulines, int n_vlines, Backend& backend)
-{
-
-  int i;
-  //we know the loop is a rectangle, but not sure which is top
-  Arc_ptr top, bot, left, right;
-
-  if(equalRect(loop->tail()[1] ,  loop->head()[1]))
-    {
-
-      if(loop->tail()[1] > loop->prev->prev->tail()[1])
-	{
-
-	top = loop;
-	}
-      else{
-
-	top = loop->prev->prev;
-	}
-    }
-  else 
-    {
-      if(loop->tail()[0] > loop->prev->prev->tail()[0])
-	{
-	  //loop is the right arc
-
-	  top = loop->next;
-	}
-      else
-	{
-
-	  top = loop->prev;
-	}
-    }
-
-  left = top->next;
-  bot  = left->next;
-  right= bot->next;
-
-#ifdef COUNT_TRIANGLES
-  num_triangles += loop->pwlArc->npts + 
-                 left->pwlArc->npts + 
-                 bot->pwlArc->npts + 
-		  right->pwlArc->npts 
-		      + 2*n_ulines + 2*n_vlines 
-			-8;
-  num_quads += (n_ulines-1)*(n_vlines-1);
-#endif
-/*
-  backend.surfgrid(left->tail()[0], right->tail()[0], n_ulines+1, 
-		   top->tail()[1], bot->tail()[1], n_vlines+1);
-//  if(n_ulines>1 && n_vlines>1)
-    backend.surfmesh(0,0,n_ulines+1,n_vlines+1);
-return;
-*/
-  REAL* u_val=(REAL*) malloc(sizeof(REAL)*n_ulines);
-  assert(u_val);
-  REAL* v_val=(REAL*)malloc(sizeof(REAL) * n_vlines);
-  assert(v_val);
-  REAL u_stepsize = (right->tail()[0] - left->tail()[0])/( (REAL) n_ulines+1);
-  REAL v_stepsize = (top->tail()[1] - bot->tail()[1])/( (REAL) n_vlines+1);
-  Real temp=left->tail()[0]+u_stepsize;
-  for(i=0; i<n_ulines; i++)
-    {
-      u_val[i] = temp;
-      temp += u_stepsize;
-    }
-  temp = bot->tail()[1] + v_stepsize;
-  for(i=0; i<n_vlines; i++)
-    {
-      v_val[i] = temp;
-      temp += v_stepsize;
-    }
-
-  triangulateRectTopGen(top, n_ulines, u_val, v_val[n_vlines-1], 1,1, backend);
-  triangulateRectTopGen(bot, n_ulines, u_val, v_val[0], 0, 1, backend);
-  triangulateRectTopGen(left, n_vlines, v_val, u_val[0], 1, 0, backend);
-  triangulateRectTopGen(right, n_vlines, v_val, u_val[n_ulines-1], 0,0, backend);
-
-
-
-
-  //triangulate the center
-  triangulateRectCenter(n_ulines, u_val, n_vlines, v_val, backend);
-
-  free(u_val);
-  free(v_val);
-  
-}
-
-
-  
-
-/**********for reading newtess_flag from a file**********/
-#ifdef USE_READ_FLAG
-static Int read_flag(char* name)
-{
-  Int ret;
-  FILE* fp = fopen(name, "r");
-  if(fp == NULL)
-    {
-      fprintf(stderr, "can't open file %s\n", name);
-      exit(1);
-    }
-  fscanf(fp, "%i", &ret);
-  fclose(fp);
-  return ret;
-}
-#endif  
-
-/***********nextgen tess****************/
-#include "sampleMonoPoly.h"
-directedLine* arcToDLine(Arc_ptr arc)
-{
-  int i;
-  Real vert[2];
-  directedLine* ret;
-  sampledLine* sline = new sampledLine(arc->pwlArc->npts);
-  for(i=0; i<arc->pwlArc->npts; i++)
-    {
-      vert[0] = arc->pwlArc->pts[i].param[0];
-      vert[1] = arc->pwlArc->pts[i].param[1];
-      sline->setPoint(i, vert);
-    }
-  ret = new directedLine(INCREASING, sline);
-  return ret;
-}
- 
-/*an pwlArc may not be a straight line*/
-directedLine* arcToMultDLines(directedLine* original, Arc_ptr arc)
-{
-  directedLine* ret = original;
-  int is_linear = 0;
-  if(arc->pwlArc->npts == 2 )
-    is_linear = 1;
-  else if(area(arc->pwlArc->pts[0].param, arc->pwlArc->pts[1].param, arc->pwlArc->pts[arc->pwlArc->npts-1].param) == 0.0)
-    is_linear = 1;
-  
-  if(is_linear)
-    {
-      directedLine *dline = arcToDLine(arc);
-      if(ret == NULL)
-	ret = dline;
-      else
-	ret->insert(dline);
-      return ret;
-    }
-  else /*not linear*/
-    {
-      for(Int i=0; i<arc->pwlArc->npts-1; i++)
-	{
-	  Real vert[2][2];
-	  vert[0][0] = arc->pwlArc->pts[i].param[0];
-	  vert[0][1] = arc->pwlArc->pts[i].param[1];
-	  vert[1][0] = arc->pwlArc->pts[i+1].param[0];
-	  vert[1][1] = arc->pwlArc->pts[i+1].param[1];
-	  
-	  sampledLine *sline = new sampledLine(2, vert);
-	  directedLine *dline = new directedLine(INCREASING, sline);
-	  if(ret == NULL)
-	    ret = dline;
-	  else
-	    ret->insert(dline);
-	}
-      return ret;
-    }
-}
-  
-     
-	
-directedLine* arcLoopToDLineLoop(Arc_ptr loop)
-{
-  directedLine* ret;
-
-  if(loop == NULL)
-    return NULL;
-  ret = arcToMultDLines(NULL, loop);
-//ret->printSingle();
-  for(Arc_ptr temp = loop->next; temp != loop; temp = temp->next){
-    ret = arcToMultDLines(ret, temp);
-//ret->printSingle();
-  }
-
-  return ret;
-}
-
-/*
-void Slicer::evalRBArray(rectBlockArray* rbArray, gridWrap* grid)
-{
-  TrimVertex *trimVert = (TrimVertex*)malloc(sizeof(TrimVertex));
-  trimVert -> nuid = 0;//????
-
-  Real* u_values = grid->get_u_values();
-  Real* v_values = grid->get_v_values();
-
-  Int i,j,k,l;
-
-  for(l=0; l<rbArray->get_n_elements(); l++)
-    {
-      rectBlock* block = rbArray->get_element(l);
-      for(k=0, i=block->get_upGridLineIndex(); i>block->get_lowGridLineIndex(); i--, k++)
-	{
-
-	  backend.bgnqstrip();
-	  for(j=block->get_leftIndices()[k+1]; j<= block->get_rightIndices()[k+1]; j++)
-	    {
-	      trimVert->param[0] = u_values[j];
-	      trimVert->param[1] = v_values[i];
-	      backend.tmeshvert(trimVert);
-
-	      trimVert->param[1] = v_values[i-1];
-	      backend.tmeshvert(trimVert);
-
-	    }
-	  backend.endqstrip();
-
-	}
-    }
-  
-  free(trimVert);
-}
-*/
-
-void Slicer::evalRBArray(rectBlockArray* rbArray, gridWrap* grid)
-{
-  Int i,j,k;
-  
-  Int n_vlines=grid->get_n_vlines();
-  //the reason to switch the position of v_max and v_min is because of the
-  //the orientation problem. glEvalMesh generates quad_strip clockwise, but
-  //we need counter-clockwise.
-  backend.surfgrid(grid->get_u_min(), grid->get_u_max(), grid->get_n_ulines()-1,
-		   grid->get_v_max(), grid->get_v_min(), n_vlines-1);
-
-
-  for(j=0; j<rbArray->get_n_elements(); j++)
-    {
-      rectBlock* block = rbArray->get_element(j);
-      Int low = block->get_lowGridLineIndex();
-      Int high = block->get_upGridLineIndex();
-
-      for(k=0, i=high; i>low; i--, k++)
-	{
-	  backend.surfmesh(block->get_leftIndices()[k+1], n_vlines-1-i, block->get_rightIndices()[k+1]-block->get_leftIndices()[k+1], 1);
-	}
-    }
-}
-
-
-void Slicer::evalStream(primStream* pStream)
-{
-  Int i,j,k;
-  k=0;
-/*  TrimVertex X;*/
-  TrimVertex *trimVert =/*&X*/  (TrimVertex*)malloc(sizeof(TrimVertex));
-  trimVert -> nuid = 0;//???
-  Real* vertices = pStream->get_vertices(); //for efficiency
-  for(i=0; i<pStream->get_n_prims(); i++)
-    {
-
-     //ith primitive  has #vertices = lengths[i], type=types[i]
-      switch(pStream->get_type(i)){
-      case PRIMITIVE_STREAM_FAN:
-
-	backend.bgntfan();
-
-	for(j=0; j<pStream->get_length(i); j++)
-	  {	    
-	    trimVert->param[0] = vertices[k];
-	    trimVert->param[1] = vertices[k+1];
-	    backend.tmeshvert(trimVert);	   
-	    
-//	    backend.tmeshvert(vertices[k], vertices[k+1]);
-	    k += 2;
-	  }
-	backend.endtfan();
-	break;
-	
-      default:
-	fprintf(stderr, "evalStream: not implemented yet\n");
-	exit(1);
-
-      }
-    }
-  free(trimVert);
-}
-	   
-	   
-	    
-
-void Slicer::slice_new(Arc_ptr loop)
-{
-//count++;
-//if(count == 78) count=1;
-//printf("count=%i\n", count);
-//if( ! (4<= count && count <=4)) return;
-
-
-  Int num_ulines;
-  Int num_vlines;
-  Real uMin, uMax, vMin, vMax;
-  Real mydu, mydv;
-  uMin = uMax = loop->tail()[0];
-  vMin = vMax = loop->tail()[1];
-  mydu = (du>0)? du: -du;
-  mydv = (dv>0)? dv: -dv;
-
-  for(Arc_ptr jarc=loop->next; jarc != loop; jarc = jarc->next)
-   {
-
-     if(jarc->tail()[0] < uMin)
-       uMin = jarc->tail()[0];
-     if(jarc->tail()[0] > uMax)
-       uMax = jarc->tail()[0];
-     if(jarc->tail()[1] < vMin)
-       vMin = jarc->tail()[1];
-     if(jarc->tail()[1] > vMax)
-       vMax = jarc->tail()[1];
-   }
-
-  if (uMax == uMin)
-    return; // prevent divide-by-zero.  Jon Perry.  17 June 2002
-
-  if(mydu > uMax - uMin)
-    num_ulines = 2;
-  else
-    {
-      num_ulines = 3 + (Int) ((uMax-uMin)/mydu);
-    }
-  if(mydv>=vMax-vMin)
-    num_vlines = 2;
-  else
-    {
-      num_vlines = 2+(Int)((vMax-vMin)/mydv);
-    }
-
-  Int isRect = is_rect(loop);
-
-  if(isRect && (num_ulines<=2 || num_vlines<=2))
-    {
-      if(vlinear)
-	triangulateRect(loop, backend, 1, ulinear, vlinear);
-      else if(ulinear)
-	triangulateRect(loop, backend, -1, ulinear, vlinear);	
-      else
-	triangulateRect(loop, backend, 0, ulinear, vlinear);		
-    }
-
-   else if(isRect)
-    {
-      triangulateRectGen(loop, num_ulines-2, num_vlines-2, backend); 
-    }
-  else if( (num_ulines<=2 || num_vlines <=2) && ulinear)
-    {
-      monoTriangulationFunBackend(loop, compV2InY, &backend);
-    }
-  else if( (!ulinear) && (!vlinear) && (num_ulines == 2) && (num_vlines > 2))
-    {
-      monoTriangulationFunBackend(loop, compV2InY, &backend);
-    }
-  else 
-    {
-      directedLine* poly = arcLoopToDLineLoop(loop);
-
-      gridWrap grid(num_ulines, num_vlines, uMin, uMax, vMin, vMax);
-      primStream pStream(20, 20);
-      rectBlockArray rbArray(20);
-
-      sampleMonoPoly(poly, &grid, ulinear, vlinear, &pStream, &rbArray);
-
-      evalStream(&pStream);
-
-      evalRBArray(&rbArray, &grid);
-      
-#ifdef COUNT_TRIANGLES
-      num_triangles += pStream.num_triangles();
-      num_quads += rbArray.num_quads();
-#endif
-      poly->deleteSinglePolygonWithSline();      
-    }
-  
-#ifdef COUNT_TRIANGLES
-  printf("num_triangles=%i\n", num_triangles);
-  printf("num_quads = %i\n", num_quads);
-#endif
-}
-
-void Slicer::slice(Arc_ptr loop)
-{
-#ifdef USE_READ_FLAG
-  if(read_flag("flagFile"))
-    slice_new(loop);
-  else
-    slice_old(loop);
-
-#else
-    slice_new(loop);
-#endif
-
-}
-
-  
-
-Slicer::Slicer( Backend &b ) 
-	: CoveAndTiler( b ), Mesher( b ), backend( b )
-{
-    oneOverDu = 0;
-    du = 0;
-    dv = 0;
-    isolines = 0;
-    ulinear = 0;
-    vlinear = 0;
-}
-
-Slicer::~Slicer()
-{
-}
-
-void
-Slicer::setisolines( int x )
-{
-    isolines = x;
-}
-
-void
-Slicer::setstriptessellation( REAL x, REAL y )
-{
-    assert(x > 0 && y > 0);
-    du = x;
-    dv = y;
-    setDu( du );
-}
-
-void
-Slicer::slice_old( Arc_ptr loop )
-{
-    loop->markverts();
-
-    Arc_ptr extrema[4];
-    loop->getextrema( extrema );
-
-    unsigned int npts = loop->numpts();
-    TrimRegion::init( npts, extrema[0] );
-
-    Mesher::init( npts );
-
-    long ulines = uarray.init( du, extrema[1], extrema[3] );
-//printf("ulines = %i\n", ulines);
-    Varray varray;
-    long vlines = varray.init( dv, extrema[0], extrema[2] );
-//printf("vlines = %i\n", vlines);
-    long botv = 0;
-    long topv;
-    TrimRegion::init( varray.varray[botv] );
-    getGridExtent( &extrema[0]->pwlArc->pts[0], &extrema[0]->pwlArc->pts[0] );
-
-    for( long quad=0; quad<varray.numquads; quad++ ) {
-	backend.surfgrid( uarray.uarray[0], 
-		       uarray.uarray[ulines-1], 
-	 	       ulines-1, 
-		       varray.vval[quad], 
-		       varray.vval[quad+1], 
-		       varray.voffset[quad+1] - varray.voffset[quad] );
-
-	for( long i=varray.voffset[quad]+1; i <= varray.voffset[quad+1]; i++ ) {
-    	    topv = botv++;
-    	    advance( topv - varray.voffset[quad], 
-		     botv - varray.voffset[quad], 
-		     varray.varray[botv] );
-	    if( i == vlines )
-		getPts( extrema[2] );
-	    else
-		getPts( backend );
-	    getGridExtent();
-            if( isolines ) {
-	        outline();
-	    } else {
-		if( canTile() ) 
-		    coveAndTile();
-		else
-		    mesh();
-	    }
-        }
-   }
-}
-
-
-void
-Slicer::outline( void )
-{
-    GridTrimVertex upper, lower;
-    Hull::init( );
-
-    backend.bgnoutline();
-    while( (nextupper( &upper )) ) {
-	if( upper.isGridVert() )
-	    backend.linevert( upper.g );
-	else
-	    backend.linevert( upper.t );
-    }
-    backend.endoutline();
-
-    backend.bgnoutline();
-    while( (nextlower( &lower )) ) {
-	if( lower.isGridVert() )
-	    backend.linevert( lower.g );
-	else
-	    backend.linevert( lower.t );
-    }
-    backend.endoutline();
-}
-
-
-void
-Slicer::outline( Arc_ptr jarc )
-{
-    jarc->markverts();
-
-    if( jarc->pwlArc->npts >= 2 ) {
-	backend.bgnoutline();
-	for( int j = jarc->pwlArc->npts-1; j >= 0; j--  )
-	    backend.linevert( &(jarc->pwlArc->pts[j]) );
-	backend.endoutline();
-    }
-}
-
-
diff --git a/src/glu/sgi/libnurbs/internals/slicer.h b/src/glu/sgi/libnurbs/internals/slicer.h
deleted file mode 100644
index e1f5d22ff10..00000000000
--- a/src/glu/sgi/libnurbs/internals/slicer.h
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * slicer.h
- *
- */
-
-#ifndef __gluslicer_h_
-#define __gluslicer_h_
-
-#include "trimregion.h"
-#include "mesher.h"
-#include "coveandtiler.h"
-#include "primitiveStream.h"
-#include "rectBlock.h"
-
-class Backend;
-class Arc;
-class TrimVertex;
-
-class Slicer : public CoveAndTiler, public Mesher {
-public:
-    			Slicer( Backend & );
-			~Slicer( void );
-    void		slice( Arc_ptr );
-    void		slice_old( Arc_ptr);
-    void		slice_new( Arc_ptr );
-    void                evalStream(primStream* );
-    void                evalRBArray(rectBlockArray* rbArray, gridWrap* grid);
-
-    void		outline( Arc_ptr );
-    void		setstriptessellation( REAL, REAL );
-    void		setisolines( int );
-
-    void                set_ulinear(int ulinear_flag)
-      {
-	ulinear = ulinear_flag;
-      }
-    void                set_vlinear(int vlinear_flag)
-      {
-	vlinear = vlinear_flag;
-      }
-private:
-    Backend&		backend;
-    REAL		oneOverDu;
-    REAL		du, dv;
-    int			isolines;
-
-    void		outline( void );
-    void		initGridlines( void );
-    void		advanceGridlines( long );
-
-    int                ulinear; //indicate whether uorder is 2 or not
-    int                vlinear; //indicate whether vorder is 2 or not
-};
-#endif /* __gluslicer_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/sorter.cc b/src/glu/sgi/libnurbs/internals/sorter.cc
deleted file mode 100644
index 7a79941492d..00000000000
--- a/src/glu/sgi/libnurbs/internals/sorter.cc
+++ /dev/null
@@ -1,139 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * sorter.c++
- *
- */
-
-#include "glimports.h"
-#include "sorter.h"
-#include "mystdio.h"
-
-Sorter::Sorter( int _es )
-{
-    es = _es;
-}
-
-void
-Sorter::qsort( void *a, int n )
-{
-    qs1( (char *)a, ((char *)a)+n*es);
-}
-
-int
-Sorter::qscmp( char *, char * )
-{
-    _glu_dprintf( "Sorter::qscmp: pure virtual called\n" );
-    return 0;
-}
-
-
-void
-Sorter::qsexc( char *, char * )
-{
-    _glu_dprintf( "Sorter::qsexc: pure virtual called\n" );
-}
-
-
-void
-Sorter::qstexc( char *, char *, char * )
-{
-    _glu_dprintf( "Sorter::qstexc: pure virtual called\n" );
-}
-
-void
-Sorter::qs1( char *a,  char *l )
-{
-    char *i, *j;
-    char	*lp, *hp;
-    int	c;
-    unsigned int n;
-
-start:
-    if((n=l-a) <= (unsigned int)es)
-	    return;
-    n = es * (n / (2*es));
-    hp = lp = a+n;
-    i = a;
-    j = l-es;
-    while(1) {
-	if(i < lp) {
-	    if((c = qscmp(i, lp)) == 0) {
-		qsexc(i, lp -= es);
-		continue;
-	    }
-	    if(c < 0) {
-		i += es;
-		continue;
-	    }
-	}
-
-loop:
-	if(j > hp) {
-	    if((c = qscmp(hp, j)) == 0) {
-		qsexc(hp += es, j);
-		goto loop;
-	    }
-	    if(c > 0) {
-		if(i == lp) {
-		    qstexc(i, hp += es, j);
-		    i = lp += es;
-		    goto loop;
-		}
-		qsexc(i, j);
-		j -= es;
-		i += es;
-		continue;
-	    }
-	    j -= es;
-	    goto loop;
-	}
-
-	if(i == lp) {
-	    if(lp-a >= l-hp) {
-		qs1(hp+es, l);
-		l = lp;
-	    } else {
-		qs1(a, lp);
-		a = hp+es;
-	    }
-	    goto start;
-	}
-
-	qstexc(j, lp -= es, i);
-	j = hp -= es;
-    }
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/sorter.h b/src/glu/sgi/libnurbs/internals/sorter.h
deleted file mode 100644
index 57ea1212907..00000000000
--- a/src/glu/sgi/libnurbs/internals/sorter.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-/*
-*/
-
-#ifndef __glusorter_h_
-#define __glusorter_h_
-
-class Sorter {
-public:
-			Sorter( int es );
-    virtual             ~Sorter() { /* silence warning*/ }
-    void		qsort( void *a, int n );
-
-protected:	
-    virtual int		qscmp( char *, char * );
-    virtual void	qsexc( char *i, char *j );	// i<-j, j<-i 
-    virtual void	qstexc( char *i, char *j, char *k ); // i<-k, k<-j, j<-i 
-
-private:
-    void		qs1( char *, char * );
-    int 		es;
-};
-#endif /* __glusorter_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/splitarcs.cc b/src/glu/sgi/libnurbs/internals/splitarcs.cc
deleted file mode 100644
index 1f79d543fbc..00000000000
--- a/src/glu/sgi/libnurbs/internals/splitarcs.cc
+++ /dev/null
@@ -1,293 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * splitarcs.c++
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "mysetjmp.h"
-#include "mystdio.h"
-#include "subdivider.h"
-#include "arcsorter.h"
-#include "arc.h"
-#include "bin.h"
-
-/* local preprocessor definitions */
-#define MAXARCS	10
-
-/*----------------------------------------------------------------------------
- * Subdivider::split - split trim regions in source bin by line (param == value). 
- *----------------------------------------------------------------------------
- */
-
-void
-Subdivider::split( Bin& bin, Bin& left, Bin& right, int param, REAL value )
-{
-    Bin	intersections, unknown; 
-
-    partition( bin, left, intersections, right, unknown, param, value );
-
-    int	count = intersections.numarcs();
-    if( count % 2 ) {
-#ifndef NDEBUG
-	left.show( "left" );
-	intersections.show( "intersections" );
-	right.show( "right" );
-#endif
-	::mylongjmp( jumpbuffer, 29 );
-    }
-
-    Arc_ptr arclist[MAXARCS], *list;
-    if( count >= MAXARCS ) {
-	list = new Arc_ptr[count];
-    } else {
-	list = arclist;
-    }
-
-    Arc_ptr jarc, *last, *lptr;
-    for( last = list; (jarc=intersections.removearc()) != NULL; last++ )
-	*last = jarc;
-
-    if( param == 0 ) { /* sort into increasing t order */
-	ArcSdirSorter sorter(*this);
-	sorter.qsort( list, count );
-	
-        //::qsort ((void *)list, count, sizeof(Arc_ptr), (cmpfunc)compare_s);
-	for( lptr=list; lptr<last; lptr+=2 )
-	    check_s ( lptr[0], lptr[1] );
-	for( lptr=list; lptr<last; lptr+=2 )
-	    join_s ( left, right, lptr[0], lptr[1] );
-	for( lptr=list; lptr != last; lptr++ ) {
-	    if( ((*lptr)->head()[0] <= value) && ((*lptr)->tail()[0] <= value) )
-		left.addarc( *lptr  );
-	    else
-		right.addarc( *lptr  );
-	}
-    } else { /* sort into decreasing s order */
-	ArcTdirSorter sorter(*this);
-	sorter.qsort( list, count );
-        //::qsort ((void *)list, count, sizeof(Arc_ptr), (cmpfunc)compare_t);
-	for( lptr=list; lptr<last; lptr+=2 )
-	    check_t ( lptr[0], lptr[1] );
-	for( lptr=list; lptr<last; lptr+=2 )
-	    join_t ( left, right, lptr[0], lptr[1] );
-	for( lptr=list; lptr != last; lptr++ ) {
-	    if( ((*lptr)->head()[1] <= value) && ((*lptr)->tail()[1] <= value) )
-		left.addarc( *lptr  );
-	    else
-		right.addarc( *lptr  );
-	}
-    }
-
-    if( list != arclist ) delete[] list;
-    unknown.adopt(); 
-}
-
-
-void
-Subdivider::check_s( Arc_ptr jarc1, Arc_ptr jarc2 )
-{
-    assert( jarc1->check( ) != 0 );
-    assert( jarc2->check( ) != 0 );
-    assert( jarc1->next->check( ) != 0 );
-    assert( jarc2->next->check( ) != 0 );
-    assert( jarc1 != jarc2 );
-
-    /* XXX - if these assertions fail, it is due to user error or
-	     undersampling */
-    if( ! ( jarc1->tail()[0] < (jarc1)->head()[0] ) ) {
-#ifndef NDEBUG
-	_glu_dprintf( "s difference %f\n",  (jarc1)->tail()[0] - (jarc1)->head()[0] );
-#endif
-	::mylongjmp( jumpbuffer, 28 );
-    }
-
-    if( ! ( jarc2->tail()[0] > (jarc2)->head()[0] ) ) { 
-#ifndef NDEBUG
-	_glu_dprintf( "s difference %f\n",  (jarc2)->tail()[0] - (jarc2)->head()[0] );
-#endif
-	::mylongjmp( jumpbuffer, 28 );
-    }
-}
-
-inline void
-Subdivider::link( Arc_ptr jarc1, Arc_ptr jarc2, Arc_ptr up, Arc_ptr down )
-{
-    up->nuid = down->nuid = 0;		// XXX
-
-    up->next = jarc2;
-    down->next = jarc1;
-    up->prev = jarc1->prev;
-    down->prev = jarc2->prev;
-
-    down->next->prev = down;
-    up->next->prev = up;
-    down->prev->next = down;
-    up->prev->next = up;
-}
-
-inline void 
-Subdivider::simple_link( Arc_ptr jarc1, Arc_ptr jarc2 )
-{
-    Arc_ptr tmp = jarc2->prev;
-    jarc2->prev = jarc1->prev;
-    jarc1->prev = tmp;
-    jarc2->prev->next = jarc2;
-    jarc1->prev->next = jarc1;
-}
-
-
-/*----------------------------------------------------------------------------
- * join - add a pair of oppositely directed jordan arcs between two arcs
- *----------------------------------------------------------------------------
- */
-
-void
-Subdivider::join_s( Bin& left, Bin& right, Arc_ptr jarc1, Arc_ptr jarc2 )
-{
-    assert( jarc1->check( ) != 0);
-    assert( jarc2->check( ) != 0);
-    assert( jarc1 != jarc2 );
-
-    if( ! jarc1->getitail() )
-	jarc1 = jarc1->next;
-
-    if( ! jarc2->getitail() )
-	jarc2 = jarc2->next;
-
-    REAL s = jarc1->tail()[0];
-    REAL t1 = jarc1->tail()[1];
-    REAL t2 = jarc2->tail()[1];
-
-    if( t1 == t2 ) {
-	simple_link( jarc1, jarc2 );
-    } else {
-	Arc_ptr newright = new(arcpool) Arc( arc_right, 0 ); 
-	Arc_ptr newleft = new(arcpool) Arc( arc_left, 0 );
-	assert( t1 < t2 );
-	if( isBezierArcType() ) {
-	    arctessellator.bezier( newright, s, s, t1, t2 );
-	    arctessellator.bezier( newleft, s, s, t2, t1 );
-	} else {
-	    arctessellator.pwl_right( newright, s, t1, t2, stepsizes[0] );
-	    arctessellator.pwl_left( newleft, s, t2, t1, stepsizes[2] );
-	}
-	link( jarc1, jarc2, newright, newleft );
-	left.addarc( newright  );
-	right.addarc( newleft  );
-    }
-
-    assert( jarc1->check( ) != 0 );
-    assert( jarc2->check( ) != 0 );
-    assert( jarc1->next->check( ) != 0);
-    assert( jarc2->next->check( ) != 0);
-}
-
-void
-Subdivider::check_t( Arc_ptr jarc1, Arc_ptr jarc2 )
-{
-    assert( jarc1->check( ) != 0 );
-    assert( jarc2->check( ) != 0 );
-    assert( jarc1->next->check( ) != 0 );
-    assert( jarc2->next->check( ) != 0 );
-    assert( jarc1 != jarc2 );
-
-    /* XXX - if these assertions fail, it is due to user error or
-	     undersampling */
-    if( ! ( jarc1->tail()[1] < (jarc1)->head()[1] ) ) {
-#ifndef NDEBUG
-	_glu_dprintf( "t difference %f\n",  jarc1->tail()[1] - (jarc1)->head()[1] );
-#endif
-	::mylongjmp( jumpbuffer, 28 );
-    }
-
-    if( ! ( jarc2->tail()[1] > (jarc2)->head()[1] ) ) { 
-#ifndef NDEBUG
-	_glu_dprintf( "t difference %f\n",  jarc2->tail()[1] - (jarc2)->head()[1] );
-#endif
-	::mylongjmp( jumpbuffer, 28 );
-    }
-}
-
-/*----------------------------------------------------------------------------
- * join_t - add a pair of oppositely directed jordan arcs between two arcs
- *----------------------------------------------------------------------------
- */
-
-void
-Subdivider::join_t( Bin& bottom, Bin& top, Arc_ptr jarc1, Arc_ptr jarc2 )
-{
-    assert( jarc1->check( ) != 0 );
-    assert( jarc2->check( ) != 0 );
-    assert( jarc1->next->check( ) != 0 );
-    assert( jarc2->next->check( ) != 0 );
-    assert( jarc1 != jarc2 );
-
-    if( ! jarc1->getitail() )
-	jarc1 = jarc1->next;
-
-    if( ! jarc2->getitail() )
-	jarc2 = jarc2->next;
-
-    REAL s1 = jarc1->tail()[0];
-    REAL s2 = jarc2->tail()[0];
-    REAL t  = jarc1->tail()[1];
-
-    if( s1 == s2 ) {
-	simple_link( jarc1, jarc2 );
-    } else {
-	Arc_ptr newtop = new(arcpool) Arc( arc_top, 0 );
-	Arc_ptr newbot = new(arcpool) Arc( arc_bottom, 0 );
-	assert( s1 > s2 );
-	if( isBezierArcType() ) {
-	    arctessellator.bezier( newtop, s1, s2, t, t );
-	    arctessellator.bezier( newbot, s2, s1, t, t );
-	} else {
-	    arctessellator.pwl_top( newtop, t, s1, s2, stepsizes[1] );
-	    arctessellator.pwl_bottom( newbot, t, s2, s1, stepsizes[3] );
-	}
-	link( jarc1, jarc2, newtop, newbot );
-	bottom.addarc( newtop  );
-	top.addarc( newbot  );
-    }
-
-    assert( jarc1->check( ) != 0 );
-    assert( jarc2->check( ) != 0 );
-    assert( jarc1->next->check( ) != 0 );
-    assert( jarc2->next->check( ) != 0 );
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/subdivider.cc b/src/glu/sgi/libnurbs/internals/subdivider.cc
deleted file mode 100644
index ccddc270ff9..00000000000
--- a/src/glu/sgi/libnurbs/internals/subdivider.cc
+++ /dev/null
@@ -1,912 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * subdivider.cxx
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "mystdio.h"
-#include "subdivider.h"
-#include "arc.h"
-#include "bezierarc.h"
-#include "bin.h"
-#include "renderhints.h"
-#include "backend.h"
-#include "mapdesc.h"
-#include "quilt.h"
-#include "patchlist.h"
-#include "patch.h"
-#include "nurbsconsts.h"
-#include "trimvertpool.h"
-#include "simplemath.h"
-
-#include "polyUtil.h" //for function area()
-
-//#define  PARTITION_TEST
-#ifdef PARTITION_TEST
-#include "partitionY.h"
-#include "monoTriangulation.h"
-#include "dataTransform.h"
-#include "monoChain.h"
-
-#endif
-
-
-#define OPTIMIZE_UNTRIMED_CASE
-
-
-Bin*
-Subdivider::makePatchBoundary( const REAL *from, const REAL *to )
-{ 
-    Bin* ret = new Bin();
-    REAL smin = from[0];
-    REAL smax = to[0];
-    REAL tmin = from[1];
-    REAL tmax = to[1];
-
-    pjarc = 0;
-
-    Arc_ptr jarc = new(arcpool) Arc( arc_bottom, 0 );
-    arctessellator.bezier( jarc, smin, smax, tmin, tmin );
-    ret->addarc( jarc  );
-    pjarc = jarc->append( pjarc );
-
-    jarc = new(arcpool) Arc( arc_right, 0 );
-    arctessellator.bezier( jarc, smax, smax, tmin, tmax );
-    ret->addarc( jarc  );
-    pjarc = jarc->append( pjarc );
-
-    jarc = new(arcpool) Arc( arc_top, 0 );
-    arctessellator.bezier( jarc, smax, smin, tmax, tmax );
-    ret->addarc( jarc  );
-    pjarc = jarc->append( pjarc );
-
-    jarc = new(arcpool) Arc( arc_left, 0 );
-    arctessellator.bezier( jarc, smin, smin, tmax, tmin );
-    ret->addarc( jarc  );
-    jarc->append( pjarc );
-
-    assert( jarc->check() != 0 );
-    return ret;
-}
-
-/*---------------------------------------------------------------------------
- * Subdivider - construct a subdivider
- *---------------------------------------------------------------------------
- */
-
-Subdivider::Subdivider( Renderhints& r, Backend& b ) 
-	: slicer( b ),
-	  arctessellator( trimvertexpool, pwlarcpool ), 
-	  arcpool( sizeof( Arc), 1, "arcpool" ),
- 	  bezierarcpool( sizeof( BezierArc ), 1, "Bezarcpool" ),
-	  pwlarcpool( sizeof( PwlArc ), 1, "Pwlarcpool" ),
-	  renderhints( r ),
-	  backend( b )
-{
-}
-
-void
-Subdivider::setJumpbuffer( JumpBuffer *j )
-{
-    jumpbuffer = j;
-}
-
-/*---------------------------------------------------------------------------
- * clear - reset all state after possible error condition
- *---------------------------------------------------------------------------
- */
-
-void		
-Subdivider::clear( void )
-{
-    trimvertexpool.clear();     
-    arcpool.clear();
-    pwlarcpool.clear();
-    bezierarcpool.clear();
-}
-
-/*---------------------------------------------------------------------------
- * ~Subdivider - destroy a subdivider
- *---------------------------------------------------------------------------
- */
-
-Subdivider::~Subdivider( void )
-{
-}
-
-/*---------------------------------------------------------------------------
- * addArc - add a bezier arc to a trim loop and to a bin
- *---------------------------------------------------------------------------
- */
-void
-Subdivider::addArc( REAL *cpts, Quilt *quilt, long _nuid )
-{
-    BezierArc *bezierArc = new(bezierarcpool) BezierArc;
-    Arc *jarc  		= new(arcpool) Arc( arc_none, _nuid );
-    jarc->pwlArc	= 0;
-    jarc->bezierArc	= bezierArc;
-    bezierArc->order	= quilt->qspec->order;
-    bezierArc->stride	= quilt->qspec->stride;
-    bezierArc->mapdesc	= quilt->mapdesc;
-    bezierArc->cpts	= cpts;
-    initialbin.addarc( jarc );
-    pjarc		= jarc->append( pjarc );
-}
-
-/*---------------------------------------------------------------------------
- * addArc - add a pwl arc to a trim loop and to a bin
- *---------------------------------------------------------------------------
- */
-
-void
-Subdivider::addArc( int npts, TrimVertex *pts, long _nuid ) 
-{
-    Arc *jarc 		= new(arcpool) Arc( arc_none, _nuid );
-    jarc->pwlArc	= new(pwlarcpool) PwlArc( npts, pts );        
-    initialbin.addarc( jarc  );
-    pjarc		= jarc->append( pjarc );
-}
-
-void
-Subdivider::beginQuilts( void )
-{
-    qlist = 0;
-}
-
-void
-Subdivider::addQuilt( Quilt *quilt )
-{
-    quilt->next = qlist;
-    qlist = quilt;
-}
-
-/*---------------------------------------------------------------------------
- * drawSurfaces - main entry point for surface tessellation
- *---------------------------------------------------------------------------
- */
-
-void
-Subdivider::drawSurfaces( long nuid )
-{
-    renderhints.init( );
-
-    if (qlist == NULL) 
-      {
-	//initialbin could be nonempty due to some errors
-	freejarcs(initialbin);
-	return;
-      }
-
-    for( Quilt *q = qlist; q; q = q->next ) {
-	if( q->isCulled( ) == CULL_TRIVIAL_REJECT ) {
-	    freejarcs( initialbin );
-	    return;
-	}
-    }
-
-
-    REAL from[2], to[2];
-    qlist->getRange( from, to, spbrkpts, tpbrkpts );
-#ifdef OPTIMIZE_UNTRIMED_CASE
-    //perform optimization only when the samplng method is 
-    //DOMAIN_DISTANCE and the display methdo is either 
-    //fill or outline_polygon.
-    int optimize = (is_domain_distance_sampling && (renderhints.display_method != N_OUTLINE_PATCH));
-#endif
-
-    if( ! initialbin.isnonempty() ) {
-#ifdef OPTIMIZE_UNTRIMED_CASE
-        if(! optimize )
-	  {	
-
-	  makeBorderTrim( from, to );
-	  }
-#else
-	makeBorderTrim( from, to );
-#endif
-    } else {
-	REAL rate[2];
-	qlist->findRates( spbrkpts, tpbrkpts, rate );
-
-    	if( decompose( initialbin, min(rate[0], rate[1]) ) ) 
-	    mylongjmp( jumpbuffer, 31 );
-    }
-
-    backend.bgnsurf( renderhints.wiretris, renderhints.wirequads, nuid );
-
-#ifdef PARTITION_TEST
- if(    initialbin.isnonempty() && spbrkpts.end-2 == spbrkpts.start && 
-	tpbrkpts.end-2 == tpbrkpts.start)
-{
-    for(int i=spbrkpts.start; i<spbrkpts.end-1; i++){
-      for(int j=tpbrkpts.start; j<tpbrkpts.end-1; j++){
-	Real pta[2], ptb[2];
-	pta[0] = spbrkpts.pts[i];
-	ptb[0] = spbrkpts.pts[i+1];
-	pta[1] = tpbrkpts.pts[j];
-	ptb[1] = tpbrkpts.pts[j+1];
-	qlist->downloadAll(pta, ptb, backend);
-
-	directedLine *poly;
-
-	  {
-
-	    poly = bin_to_DLineLoops(initialbin);
-	    
-	    poly=poly->deleteDegenerateLinesAllPolygons();	    	
-
-    sampledLine* retSampledLines;
-//printf("before MC_partition\n");	    
-	    poly = MC_partitionY(poly, &retSampledLines);
-//printf("after MC_partition\n");	    
-
-	  }
-
-
-	{
-	  primStream pStream(5000,5000);
-	  directedLine* temp;
-
-	  for(temp=poly; temp != NULL; temp=temp->getNextPolygon())
-
-	    monoTriangulation(temp, &pStream);
-
-	  slicer.evalStream(&pStream);
-
-	}
-	//need to clean up space
-      }
-    }
-    freejarcs( initialbin );
-    backend.endsurf();
-    return;
-
-    /*
-    printf("num_polygons=%i\n", poly->numPolygons());
-    printf("num_edges=%i\n", poly->numEdgesAllPolygons());
-    poly->writeAllPolygons("zloutputFile");
-    return;
-    {
-      primStream pStream(20,20);
-      for(directedLine* tempD = poly; tempD != NULL; tempD = tempD->getNextPolygon())
-	monoTriangulation(tempD, &pStream);
-    }
-    return;
-    */
-}
-#endif //PARTITION_TEST
-
-
-#ifdef OPTIMIZE_UNTRIMED_CASE
-    if( (!initialbin.isnonempty())  && optimize )
-      {
-	int i,j;
-	int num_u_steps;
-        int num_v_steps;
-	for(i=spbrkpts.start; i<spbrkpts.end-1; i++){
-	  for(j=tpbrkpts.start; j<tpbrkpts.end-1; j++){
-	    Real pta[2], ptb[2];
-	    pta[0] = spbrkpts.pts[i];
-	    ptb[0] = spbrkpts.pts[i+1];
-	    pta[1] = tpbrkpts.pts[j];
-	    ptb[1] = tpbrkpts.pts[j+1];
-	    qlist->downloadAll(pta, ptb, backend);
-	   
-            num_u_steps = (int) (domain_distance_u_rate * (ptb[0]-pta[0]));
-            num_v_steps = (int) (domain_distance_v_rate * (ptb[1]-pta[1]));
-
-            if(num_u_steps <= 0) num_u_steps = 1;
-            if(num_v_steps <= 0) num_v_steps = 1;
-
-	    backend.surfgrid(pta[0], ptb[0], num_u_steps, 
-			     ptb[1], pta[1], num_v_steps);
-	    backend.surfmesh(0,0,num_u_steps,num_v_steps);
-
-        
-
-	    continue;
-	    /* the following is left for reference purpose, don't delete
-	    {
-	    Bin* tempSource;	
-	      Patchlist patchlist(qlist, pta, ptb);
-	      patchlist.getstepsize();
-
-	      tempSource=makePatchBoundary(pta, ptb);
-
-	      tessellation(*tempSource, patchlist);
-
-	      render(*tempSource);
-	      delete tempSource;
-	    }
-	    */
-	  }
-	}
-      }
-    else
-      subdivideInS( initialbin );
-#else
-
-    subdivideInS( initialbin );
-#endif
-
-    backend.endsurf();
-
-}
-
-void
-Subdivider::subdivideInS( Bin& source )
-{
-    if( renderhints.display_method == N_OUTLINE_PARAM ) {
-	outline( source );
-	freejarcs( source );
-    } else {
-	setArcTypeBezier();
-	setNonDegenerate();
-	splitInS( source, spbrkpts.start, spbrkpts.end );
-    }
-}
-
-
-/*---------------------------------------------------------------------------
- * splitInS - split a patch and a bin by an isoparametric line
- *---------------------------------------------------------------------------
- */
-
-void
-Subdivider::splitInS( Bin& source, int start, int end )
-{
-    if( source.isnonempty() ) {
-        if( start != end ) {
-	    int	i = start + (end - start) / 2;
-	    Bin left, right;
-	    split( source, left, right, 0, spbrkpts.pts[i] );
-	    splitInS( left, start, i );
-	    splitInS( right, i+1, end );
-        } else {
-	    if( start == spbrkpts.start || start == spbrkpts.end ) {
-		freejarcs( source );
-	    } else if( renderhints.display_method == N_OUTLINE_PARAM_S ) {
-		outline( source );
-		freejarcs( source );
-	    } else {
-		setArcTypeBezier();
-		setNonDegenerate();
-		s_index = start;
-		splitInT( source, tpbrkpts.start, tpbrkpts.end );
-	    }
-        }
-    } 
-}
-
-/*---------------------------------------------------------------------------
- * splitInT - split a patch and a bin by an isoparametric line
- *---------------------------------------------------------------------------
- */
-
-void
-Subdivider::splitInT( Bin& source, int start, int end )
-{
-    if( source.isnonempty() ) {
-        if( start != end ) {
-	    int	i = start + (end - start) / 2;
-	    Bin left, right;
-	    split( source, left, right, 1, tpbrkpts.pts[i] );
-	    splitInT( left, start, i );
-	    splitInT( right, i+1, end );
-        } else {
-	    if( start == tpbrkpts.start || start == tpbrkpts.end ) {
-		freejarcs( source );
-	    } else if( renderhints.display_method == N_OUTLINE_PARAM_ST ) {
-		outline( source );
-		freejarcs( source );
-	    } else {
-		t_index = start;
-		setArcTypeBezier();
-		setDegenerate();
-
-		REAL pta[2], ptb[2];
-		pta[0] = spbrkpts.pts[s_index-1];
-		pta[1] = tpbrkpts.pts[t_index-1];
-
-		ptb[0] = spbrkpts.pts[s_index];
-		ptb[1] = tpbrkpts.pts[t_index];
-		qlist->downloadAll( pta, ptb, backend );
-	    
-		Patchlist patchlist( qlist, pta, ptb );
-/*
-printf("-------samplingSplit-----\n");
-source.show("samplingSplit source");
-*/
-		samplingSplit( source, patchlist, renderhints.maxsubdivisions, 0 );
-		setNonDegenerate();
-		setArcTypeBezier();
-	    }
-        }
-    } 
-}
-
-/*--------------------------------------------------------------------------
- * samplingSplit - recursively subdivide patch, cull check each subpatch  
- *--------------------------------------------------------------------------
- */
-
-void
-Subdivider::samplingSplit( 
-    Bin& source, 
-    Patchlist& patchlist, 
-    int subdivisions, 
-    int param )
-{
-    if( ! source.isnonempty() ) return;
-
-    if( patchlist.cullCheck() == CULL_TRIVIAL_REJECT ) {
-	freejarcs( source );
-	return;
-    }
-
-    patchlist.getstepsize();
-
-    if( renderhints.display_method == N_OUTLINE_PATCH ) {
-        tessellation( source, patchlist );
-	outline( source );
-	freejarcs( source );
-	return;
-    } 
-
-    //patchlist.clamp();
-
-    tessellation( source, patchlist );
-
-    if( patchlist.needsSamplingSubdivision() && (subdivisions > 0) ) {
-	if( ! patchlist.needsSubdivision( 0 ) )
-	    param = 1;
-	else if( ! patchlist.needsSubdivision( 1 ) )
-	    param = 0;
-	else
-	    param = 1 - param;
-
-	Bin left, right;
-	REAL mid = ( patchlist.pspec[param].range[0] +
-		     patchlist.pspec[param].range[1] ) * 0.5;
-	split( source, left, right, param, mid );
-	Patchlist subpatchlist( patchlist, param, mid );
-	samplingSplit( left, subpatchlist, subdivisions-1, param );
-	samplingSplit( right, patchlist, subdivisions-1, param );
-    } else {
-	setArcTypePwl();
-	setDegenerate();
-	nonSamplingSplit( source, patchlist, subdivisions, param );
-	setDegenerate();
-	setArcTypeBezier();
-    }
-}
-
-void
-Subdivider::nonSamplingSplit( 
-    Bin& source, 
-    Patchlist& patchlist, 
-    int subdivisions, 
-    int param )
-{
-    if( patchlist.needsNonSamplingSubdivision() && (subdivisions > 0) ) {
-	param = 1 - param;
-
-	Bin left, right;
-	REAL mid = ( patchlist.pspec[param].range[0] +
-		     patchlist.pspec[param].range[1] ) * 0.5;
-	split( source, left, right, param, mid );
-	Patchlist subpatchlist( patchlist, param, mid );
-	if( left.isnonempty() ) {
-	    if( subpatchlist.cullCheck() == CULL_TRIVIAL_REJECT ) 
-		freejarcs( left );
-	    else
-	        nonSamplingSplit( left, subpatchlist, subdivisions-1, param );
-	}
-	if( right.isnonempty() ) {
-	    if( patchlist.cullCheck() == CULL_TRIVIAL_REJECT ) 
-		freejarcs( right );
-	    else
-	        nonSamplingSplit( right, patchlist, subdivisions-1, param );
-	}
-
-    } else {
-	// make bbox calls
-	patchlist.bbox();
-	backend.patch( patchlist.pspec[0].range[0], patchlist.pspec[0].range[1],
-		       patchlist.pspec[1].range[0], patchlist.pspec[1].range[1] );
-    
-	if( renderhints.display_method == N_OUTLINE_SUBDIV ) {
-	    outline( source );
-	    freejarcs( source );
-	} else {
-	    setArcTypePwl();
-	    setDegenerate();
-	    findIrregularS( source );
-	    monosplitInS( source, smbrkpts.start, smbrkpts.end );
-	}
-    }
-}
-
-/*--------------------------------------------------------------------------
- * tessellation - set tessellation of interior and boundary of patch
- *--------------------------------------------------------------------------
- */
-
-void
-Subdivider::tessellation( Bin& bin, Patchlist &patchlist )
-{
-    // tessellate unsampled trim curves
-    tessellate( bin, patchlist.pspec[1].sidestep[1], patchlist.pspec[0].sidestep[1],
-	 patchlist.pspec[1].sidestep[0], patchlist.pspec[0].sidestep[0] );
-
-    // set interior sampling rates
-    slicer.setstriptessellation( patchlist.pspec[0].stepsize, patchlist.pspec[1].stepsize );
-
-    //added by zl: set the order which will be used in slicer.c++
-    slicer.set_ulinear( (patchlist.get_uorder() == 2));
-    slicer.set_vlinear( (patchlist.get_vorder() == 2));
-
-    // set boundary sampling rates
-    stepsizes[0] = patchlist.pspec[1].stepsize;
-    stepsizes[1] = patchlist.pspec[0].stepsize;
-    stepsizes[2] = patchlist.pspec[1].stepsize;
-    stepsizes[3] = patchlist.pspec[0].stepsize;
-}
-
-/*---------------------------------------------------------------------------
- * monosplitInS - split a patch and a bin by an isoparametric line
- *---------------------------------------------------------------------------
- */
-
-void
-Subdivider::monosplitInS( Bin& source, int start, int end )
-{
-    if( source.isnonempty() ) {
-        if( start != end ) {
-	    int	i = start + (end - start) / 2;
-	    Bin left, right;
-	    split( source, left, right, 0, smbrkpts.pts[i] );
-	    monosplitInS( left, start, i );
-	    monosplitInS( right, i+1, end );
-        } else {
-	    if( renderhints.display_method == N_OUTLINE_SUBDIV_S ) {
-		outline( source );
-		freejarcs( source );
-	    } else {
-		setArcTypePwl();
-		setDegenerate();
-		findIrregularT( source );
-		monosplitInT( source, tmbrkpts.start, tmbrkpts.end );
-	    }
-        }
-    } 
-}
-
-/*---------------------------------------------------------------------------
- * monosplitInT - split a patch and a bin by an isoparametric line
- *---------------------------------------------------------------------------
- */
-
-void
-Subdivider::monosplitInT( Bin& source, int start, int end )
-{
-    if( source.isnonempty() ) {
-        if( start != end ) {
-	    int	i = start + (end - start) / 2;
-	    Bin left, right;
-	    split( source, left, right, 1, tmbrkpts.pts[i] );
-	    monosplitInT( left, start, i );
-	    monosplitInT( right, i+1, end );
-        } else {
-	    if( renderhints.display_method == N_OUTLINE_SUBDIV_ST ) {
-		outline( source );
-		freejarcs( source );
-	    } else {
-/*
-printf("*******render\n");
-source.show("source\n");
-*/
-		render( source );
-		freejarcs( source );
-	    }
-        }
-    } 
-}
-
-
-/*----------------------------------------------------------------------------
- * findIrregularS - determine points of non-monotonicity is s direction
- *----------------------------------------------------------------------------
- */
-
-void
-Subdivider::findIrregularS( Bin& bin )
-{
-    assert( bin.firstarc()->check() != 0 );
-
-    smbrkpts.grow( bin.numarcs() );
-
-    for( Arc_ptr jarc=bin.firstarc(); jarc; jarc=bin.nextarc() ) {
-	REAL *a = jarc->prev->tail();
-	REAL *b = jarc->tail();
-	REAL *c = jarc->head();
-
-	if( b[1] == a[1] && b[1] == c[1] ) continue;
-
-	//corrected code
-	if((b[1]<=a[1] && b[1] <= c[1]) ||
-	   (b[1]>=a[1] && b[1] >= c[1]))
-	  {
-	    //each arc (jarc, jarc->prev, jarc->next) is a 
-	    //monotone arc consisting of multiple line segements.
-	    //it may happen that jarc->prev and jarc->next are the same,
-	    //that is, jarc->prev and jarc form a closed loop.
-	    //In such case, a and c will be the same.
-            if(a[0]==c[0] && a[1] == c[1])
-	      {
-		if(jarc->pwlArc->npts >2)
-		  {
-		    c = jarc->pwlArc->pts[jarc->pwlArc->npts-2].param;
-		  }
-		else
-		  {
-		    assert(jarc->prev->pwlArc->npts>2);
-		    a = jarc->prev->pwlArc->pts[jarc->prev->pwlArc->npts-2].param;
-		  }
-		    
-	      }
-	    if(area(a,b,c) < 0)
-	      {
-		smbrkpts.add(b[0]);
-	      }
-
-	  }
-
-	/* old code, 
-	if( b[1] <= a[1] && b[1] <= c[1] ) {
-	    if( ! ccwTurn_tr( jarc->prev, jarc ) )
-                smbrkpts.add( b[0] );
-	} else if( b[1] >= a[1] && b[1] >= c[1] ) {
-	    if( ! ccwTurn_tl( jarc->prev, jarc ) )
-                smbrkpts.add( b[0] );
-        }
-	*/
-
-    }
-
-    smbrkpts.filter();
-} 
-
-/*----------------------------------------------------------------------------
- * findIrregularT - determine points of non-monotonicity in t direction
- *		     where one arc is parallel to the s axis.
- *----------------------------------------------------------------------------
- */
-
-void
-Subdivider::findIrregularT( Bin& bin )
-{
-    assert( bin.firstarc()->check() != 0 );
-
-    tmbrkpts.grow( bin.numarcs() );
-
-    for( Arc_ptr jarc=bin.firstarc(); jarc; jarc=bin.nextarc() ) {
-	REAL *a = jarc->prev->tail();
-	REAL *b = jarc->tail();
-	REAL *c = jarc->head();
-
-	if( b[0] == a[0] && b[0] == c[0] ) continue;
-
-	if( b[0] <= a[0] && b[0] <= c[0] ) {
-	    if( a[1] != b[1] && b[1] != c[1] ) continue; 
-	    if( ! ccwTurn_sr( jarc->prev, jarc ) )
-                tmbrkpts.add( b[1] );
-	} else if ( b[0] >= a[0] && b[0] >= c[0] ) {
-	    if( a[1] != b[1] && b[1] != c[1] ) continue; 
-	    if( ! ccwTurn_sl( jarc->prev, jarc ) )
-                tmbrkpts.add( b[1] );
-	}
-    }
-    tmbrkpts.filter( );
-}
-
-/*-----------------------------------------------------------------------------
- * makeBorderTrim - if no user input trimming data then create 
- * a trimming curve around the boundaries of the Quilt.  The curve consists of
- * four Jordan arcs, one for each side of the Quilt, connected, of course,
- * head to tail. 
- *-----------------------------------------------------------------------------
- */
-
-void
-Subdivider::makeBorderTrim( const REAL *from, const REAL *to )
-{ 
-    REAL smin = from[0];
-    REAL smax = to[0];
-    REAL tmin = from[1];
-    REAL tmax = to[1];
-
-    pjarc = 0;
-
-    Arc_ptr jarc = new(arcpool) Arc( arc_bottom, 0 );
-    arctessellator.bezier( jarc, smin, smax, tmin, tmin );
-    initialbin.addarc( jarc  );
-    pjarc = jarc->append( pjarc );
-
-    jarc = new(arcpool) Arc( arc_right, 0 );
-    arctessellator.bezier( jarc, smax, smax, tmin, tmax );
-    initialbin.addarc( jarc  );
-    pjarc = jarc->append( pjarc );
-
-    jarc = new(arcpool) Arc( arc_top, 0 );
-    arctessellator.bezier( jarc, smax, smin, tmax, tmax );
-    initialbin.addarc( jarc  );
-    pjarc = jarc->append( pjarc );
-
-    jarc = new(arcpool) Arc( arc_left, 0 );
-    arctessellator.bezier( jarc, smin, smin, tmax, tmin );
-    initialbin.addarc( jarc  );
-    jarc->append( pjarc );
-
-    assert( jarc->check() != 0 );
-}
-
-/*----------------------------------------------------------------------------
- * render - renders all monotone regions in a bin and frees the bin
- *----------------------------------------------------------------------------
- */
-
-void
-Subdivider::render( Bin& bin )
-{
-    bin.markall();
-
-#ifdef N_ISOLINE_S
-    slicer.setisolines( ( renderhints.display_method == N_ISOLINE_S ) ? 1 : 0 );
-#else
-    slicer.setisolines( 0 );
-#endif
-
-    for( Arc_ptr jarc=bin.firstarc(); jarc; jarc=bin.nextarc() ) {
-	if( jarc->ismarked() ) {
-	    assert( jarc->check( ) != 0 );
-	    Arc_ptr jarchead = jarc;
-	    do {
-		jarc->clearmark();
-		jarc = jarc->next;
-	    } while (jarc != jarchead);
-	    slicer.slice( jarc );
-	}
-    }
-}
-
-/*---------------------------------------------------------------------------
- * outline - render the trimmed patch by outlining the boundary 
- *---------------------------------------------------------------------------
- */
-
-void
-Subdivider::outline( Bin& bin )
-{
-    bin.markall();
-    for( Arc_ptr jarc=bin.firstarc(); jarc; jarc=bin.nextarc() ) {
-	if( jarc->ismarked() ) {
-	    assert( jarc->check( ) != 0 );
-	    Arc_ptr jarchead = jarc;
-	    do {
-		slicer.outline( jarc );
-		jarc->clearmark();
-		jarc = jarc->prev;
-	    } while (jarc != jarchead);
-	}
-    }
-}
-
-/*---------------------------------------------------------------------------
- * freejarcs - free all arcs in a bin
- *---------------------------------------------------------------------------
- */
-
-void
-Subdivider::freejarcs( Bin& bin )
-{
-    bin.adopt();	/* XXX - should not be necessary */
-
-    Arc_ptr jarc;
-    while( (jarc = bin.removearc()) != NULL ) {
-	if( jarc->pwlArc ) jarc->pwlArc->deleteMe( pwlarcpool ); jarc->pwlArc = 0;
-	if( jarc->bezierArc) jarc->bezierArc->deleteMe( bezierarcpool ); jarc->bezierArc = 0;
-	jarc->deleteMe( arcpool );
-    }
-}
-
-/*----------------------------------------------------------------------------
- * tessellate - tessellate all Bezier arcs in a bin
- * 		   1) only accepts linear Bezier arcs as input 
- * 		   2) the Bezier arcs are stored in the pwlArc structure
- * 		   3) only vertical or horizontal lines work
- * 		-- should 
- * 		   1) represent Bezier arcs in BezierArc structure
- * 		      (this requires a multitude of changes to the code)
- * 		   2) accept high degree Bezier arcs (hard)
- * 		   3) map the curve onto the surface to determine tessellation
- * 		   4) work for curves of arbitrary geometry
- *----------------------------------------------------------------------------
- */
-
-
-void
-Subdivider::tessellate( Bin& bin, REAL rrate, REAL trate, REAL lrate, REAL brate )
-{
-    for( Arc_ptr jarc=bin.firstarc(); jarc; jarc=bin.nextarc() ) {
-	if( jarc->isbezier( ) ) {
-    	    assert( jarc->pwlArc->npts == 2 );	
-	    TrimVertex  *pts = jarc->pwlArc->pts;
-    	    REAL s1 = pts[0].param[0];
-    	    REAL t1 = pts[0].param[1];
-    	    REAL s2 = pts[1].param[0];
-    	    REAL t2 = pts[1].param[1];
-	    
-    	    jarc->pwlArc->deleteMe( pwlarcpool ); jarc->pwlArc = 0;
-	    
-	    switch( jarc->getside() ) {
-		case arc_left:
-		    assert( s1 == s2 );
-		    arctessellator.pwl_left( jarc, s1, t1, t2, lrate );
-		    break;
-		case arc_right:
-		    assert( s1 == s2 );
-		    arctessellator.pwl_right( jarc, s1, t1, t2, rrate );
-		    break;
-		case arc_top:
-		    assert( t1 == t2 );
-		    arctessellator.pwl_top( jarc, t1, s1, s2, trate );
-		    break;
-		case arc_bottom:
-		    assert( t1 == t2 );
-		    arctessellator.pwl_bottom( jarc, t1, s1, s2, brate );
-		    break;
-		case arc_none:
-		    (void) abort();
-		    break;
-	    }
-	    assert( ! jarc->isbezier() );
-    	    assert( jarc->check() != 0 );
-	}
-    }
-}
diff --git a/src/glu/sgi/libnurbs/internals/subdivider.h b/src/glu/sgi/libnurbs/internals/subdivider.h
deleted file mode 100644
index 4d539518186..00000000000
--- a/src/glu/sgi/libnurbs/internals/subdivider.h
+++ /dev/null
@@ -1,200 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * subdivider.h
- *
- */
-
-#ifndef __glusubdivider_h_
-#define __glusubdivider_h_
-
-#include "mysetjmp.h"
-#include "bin.h"
-#include "flist.h"
-#include "slicer.h"
-#include "arctess.h"
-#include "trimvertex.h"
-#include "trimvertpool.h"
-
-class Arc;
-class Pool;
-class Renderhints;
-class Quilt;
-class Patchlist;
-class Curvelist;
-struct JumpBuffer;
-
-class Subdivider {
-public:
-			Subdivider( Renderhints&, Backend& );
-			~Subdivider( void );
-    void		clear( void );
-
-    void		beginTrims( void ) {}
-    void		beginLoop( void );
-    void		addArc( REAL *, Quilt *, long );
-    void		addArc( int, TrimVertex *, long );
-    void		endLoop( void ) {}
-    void		endTrims( void ) {}
-
-    void		beginQuilts( void );
-    void		addQuilt( Quilt * );
-    void		endQuilts( void ) {}
-
-    void		drawCurves( void );
-    void		drawSurfaces( long );
-
-    int			ccwTurn_sl( Arc_ptr, Arc_ptr  );
-    int			ccwTurn_sr( Arc_ptr , Arc_ptr   );
-    int			ccwTurn_tl( Arc_ptr , Arc_ptr  );
-    int			ccwTurn_tr( Arc_ptr , Arc_ptr  );
-
-    void		setJumpbuffer( JumpBuffer * );
-
-    void set_domain_distance_u_rate(REAL u_rate)
-      {
-	domain_distance_u_rate = u_rate;
-      }
-    void set_domain_distance_v_rate(REAL v_rate)
-      {
-	domain_distance_v_rate = v_rate;
-      }
-    void set_is_domain_distance_sampling(int flag)
-      {
-	is_domain_distance_sampling = flag;
-      }
-
-private:
-    void		classify_headonleft_s( Bin &, Bin &, Bin &, REAL );
-    void		classify_tailonleft_s( Bin &, Bin &, Bin &, REAL );
-    void		classify_headonright_s( Bin &, Bin &, Bin &, REAL );
-    void		classify_tailonright_s( Bin &, Bin &, Bin &, REAL );
-    void		classify_headonleft_t( Bin &, Bin &, Bin &, REAL );
-    void		classify_tailonleft_t( Bin &, Bin &, Bin &, REAL );
-    void		classify_headonright_t( Bin &, Bin &, Bin &, REAL );
-    void		classify_tailonright_t( Bin &, Bin &, Bin &, REAL );
-
-    enum dir 		{ down, same, up, none };
-    void		tessellate( Arc_ptr, REAL );
-    void		monotonize( Arc_ptr , Bin & );
-    int			isMonotone( Arc_ptr  );
-    int			decompose( Bin &, REAL );
-
-
-    Slicer		slicer;
-    ArcTessellator	arctessellator;
-    Pool		arcpool;
-    Pool		bezierarcpool;
-    Pool		pwlarcpool;
-    TrimVertexPool	trimvertexpool;
-
-    JumpBuffer*		jumpbuffer;
-    Renderhints&	renderhints;
-    Backend&		backend;
-
-    Bin			initialbin;
-    Arc_ptr		pjarc;
-    int 		s_index;
-    int			t_index;
-    Quilt *		qlist;
-    Flist		spbrkpts;
-    Flist		tpbrkpts;
-    Flist		smbrkpts;
-    Flist		tmbrkpts;
-    REAL	 	stepsizes[4];
-    int			showDegenerate;
-    int			isArcTypeBezier;
-
-    void		samplingSplit( Curvelist&, int );
-
-    void		subdivideInS( Bin&  );
-    void		splitInS( Bin&, int, int );
-    void		splitInT( Bin&, int, int );
-    void		samplingSplit( Bin&, Patchlist&, int, int );
-    void		nonSamplingSplit( Bin&, Patchlist&, int, int );
-    void		tessellation( Bin&, Patchlist& );
-    void		monosplitInS( Bin&, int, int );
-    void		monosplitInT( Bin&, int, int );
-
-    void		outline( Bin & );
-    void		freejarcs( Bin & );
-    void		render( Bin & );
-    void		split( Bin &, Bin &, Bin &, int, REAL );
-    void		tessellate( Bin &, REAL, REAL, REAL, REAL );
-
-    inline void		setDegenerate( void ) { showDegenerate = 1; }
-    inline void		setNonDegenerate( void ) { showDegenerate = 0; }
-    inline int		showingDegenerate( void ) { return showDegenerate; }
-    inline void		setArcTypeBezier( void ) { isArcTypeBezier = 1; }
-    inline void		setArcTypePwl( void ) { isArcTypeBezier = 0; }
-    inline int		isBezierArcType( void ) { return isArcTypeBezier; }
-
-    void		makeBorderTrim( const REAL *, const REAL * );
-    void		split( Bin &, int, const REAL *, int, int );
-    void		partition( Bin &, Bin &, Bin &, Bin &, Bin &, int, REAL );
-    void		findIrregularS( Bin & );
-    void		findIrregularT( Bin & );
-
-
-    inline int		bbox( TrimVertex *, TrimVertex *, TrimVertex *, int );
-    static int		bbox( REAL, REAL, REAL, REAL, REAL, REAL );
-    static int		ccw( TrimVertex *, TrimVertex *, TrimVertex * );
-    void		join_s( Bin &, Bin &, Arc_ptr, Arc_ptr  );
-    void		join_t( Bin &, Bin &, Arc_ptr , Arc_ptr  );
-    int			arc_split( Arc_ptr , int, REAL, int );
-    void		check_s( Arc_ptr , Arc_ptr  );
-    void		check_t( Arc_ptr , Arc_ptr  );
-    inline void		link( Arc_ptr , Arc_ptr , Arc_ptr , Arc_ptr  );
-    inline void		simple_link( Arc_ptr , Arc_ptr  );
-
-   Bin*                 makePatchBoundary( const REAL *from, const REAL *to );
-
-   /*in domain distance method, the tessellation is controled by two numbers:
-    *GLU_U_STEP: number of u-segments per unit u length of domain
-    *GLU_V_STEP: number of v-segments per unit v length of domain
-    *These two numbers are normally stored in mapdesc->maxs(t)rate.
-    *I (ZL) put these two numbers here so that I can optimize the untrimmed 
-    *case in the case of domain distance sampling.
-    *These two numbers are set by set_domain_distance_u_rate() and ..._v_..().
-    */
-   REAL domain_distance_u_rate;
-   REAL domain_distance_v_rate;
-   int is_domain_distance_sampling;
-};
-
-inline void
-Subdivider::beginLoop( void ) 
-{
-    pjarc = 0;
-}
-
-
-#endif /* __glusubdivider_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/tobezier.cc b/src/glu/sgi/libnurbs/internals/tobezier.cc
deleted file mode 100644
index 531f26bc783..00000000000
--- a/src/glu/sgi/libnurbs/internals/tobezier.cc
+++ /dev/null
@@ -1,687 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/* 
- * tobezier.c++
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "mystdio.h"
-#include "mystring.h"
-#include "quilt.h"
-#include "knotvector.h"
-
-/* local type definitions */
-struct Breakpt {		/* breakpoints	*/
-    Knot		value;		/* value	*/
-    int			multi;		/* multiplicity	*/
-    int			def;		/* deficit */
-};
-
-struct Knotspec {		/* knotvector format */
-    long		order;		/* order of spline  */
-    Knot_ptr		inkbegin;	/* input knot sequence */
-    Knot_ptr		inkend;		/* location after last knot */
-    Knot_ptr		outkbegin;	/* in-process knot subsequence */
-    Knot_ptr		outkend;	/* location after last knot */
-    Knot_ptr		kleft;		/* */
-    Knot_ptr		kright;		/* */
-    Knot_ptr		kfirst;		/* */
-    Knot_ptr		klast;		/* */
-    Knot_ptr		sbegin;		/* conversion factor values */
-    Breakpt *		bbegin;		/* in-process breakpoints */
-    Breakpt *		bend;		/* last breakpoint */
-    int			ncoords;	/* coordinates per control point */
-    int			prestride;	/* stride between input points */
-    int			poststride;	/* stride between output points	*/
-    int 		preoffset;	/* scaled point offset	*/
-    int 		postoffset;	/* scaled point offset	*/
-    int 		prewidth;	/* width of dimension	*/
-    int 		postwidth;	/* width of dimension	*/
-    int 		istransformed;	/* was dimension transformed */
-    Knotspec *		next;   	/* next knotspec */
-    Knotspec *		kspectotrans;   /* knotspec in transformation direction */
-
-			Knotspec( void );
-			~Knotspec( void );
-    void		factors( void );
-    void		insert( REAL * );
-    void		preselect();
-    void		select( void );
-    void		copy( INREAL *, REAL * );
-    void		breakpoints( void );
-    void		knots( void );
-    void		transform( REAL * );
-    void		showpts( REAL * );
-    
-    void		pt_io_copy( REAL *, INREAL * );
-    void		pt_oo_copy( REAL *, REAL * );
-    void		pt_oo_sum( REAL*, REAL*, REAL*, Knot, Knot );
-};
-
-struct Splinespec {		/* a non-uniform tensor element */
-			Splinespec( int );
-                        ~Splinespec(void);
-    Knotspec		*kspec;	/* format of each param. dir. */
-    int			dim;		/* domain dimension */
-    REAL *		outcpts;	/* Bezier control points */
-
-    void		kspecinit( Knotvector & );
-    void		kspecinit( Knotvector &, Knotvector & );
-    void		select( void );
-    void		layout( long );
-    void		setupquilt( Quilt_ptr );
-    void		copy( INREAL * );
-    void		transform( void );
-};
-
-/*-----------------------------------------------------------------------------
- * Quilt::toBezier - convert from NURBS to rational Bezier 
- *-----------------------------------------------------------------------------
- */
-
-void
-Quilt::toBezier( 
-    Knotvector& knotvector,	/* a knot vector */
-    INREAL *ctlpts,		/* input contol points */
-    long ncoords )		/* number of coordinates per control point */
-{
-    Splinespec spline( 1 );
-    spline.kspecinit( knotvector );
-    spline.select();
-    spline.layout( ncoords );
-    spline.setupquilt( this );
-    spline.copy( ctlpts );
-    spline.transform();
-}
-
-void
-Quilt::toBezier( 
-    Knotvector& sknotvector,	/* a knot vector */
-    Knotvector& tknotvector,	/* a knot vector */
-    INREAL *ctlpts,		/* input contol points */
-    long ncoords )		/* number of coordinates per control point */
-{
-    Splinespec spline( 2 );
-    spline.kspecinit( sknotvector, tknotvector );
-    spline.select();
-    spline.layout( ncoords );
-    spline.setupquilt( this );
-    spline.copy( ctlpts );
-    spline.transform();
-}
-Splinespec::Splinespec( int dimen )
-{
-    dim = dimen;
-}
-
-Splinespec::~Splinespec( void )
-{
-    /* Note: do NOT delete 'outcpts' here since its address (not contents)
-     * is copied in 'cpts' in this file in function Splinespec::setupquilt().
-     * This block of memory will eventually be deleted in file quilt.c++ in
-     * function Quilt::deleteMe() through 'cpts' so do NOT delete it here!
-     */	
-    Knotspec *ktrav= kspec;         //start at beginning of list 
-    while (ktrav != 0) {            //any items to delete? 
-       Knotspec *deleteThis= ktrav; //remember to delete this 
-       ktrav= ktrav->next;          //go to next item if any
-       delete deleteThis;           //delete it
-    }	
-} /* ~Splinespec() */
-
-/*-----------------------------------------------------------------------------
- * Splinespec::kspecinit - initialize Splinespec structure
- *
- * Client: Quilt::toBezier
- *-----------------------------------------------------------------------------
- */
-
-void
-Splinespec::kspecinit( Knotvector& knotvector )
-{
-    kspec = new Knotspec;
-    kspec->inkbegin = knotvector.knotlist;
-    kspec->inkend = knotvector.knotlist + knotvector.knotcount;
-    kspec->prestride = (int) knotvector.stride; 
-    kspec->order = knotvector.order;
-    kspec->next = NULL;
-}
-
-void
-Splinespec::kspecinit( Knotvector& sknotvector, Knotvector& tknotvector )
-{
-    kspec = new Knotspec;
-    Knotspec *tkspec = new Knotspec;
-
-    kspec->inkbegin = sknotvector.knotlist;
-    kspec->inkend = sknotvector.knotlist + sknotvector.knotcount;
-    kspec->prestride = (int) sknotvector.stride; 
-    kspec->order = sknotvector.order;
-    kspec->next = tkspec;
-
-    tkspec->inkbegin = tknotvector.knotlist;
-    tkspec->inkend = tknotvector.knotlist + tknotvector.knotcount;
-    tkspec->prestride = (int) tknotvector.stride; 
-    tkspec->order = tknotvector.order;
-    tkspec->next = NULL;
-}
-
-
-/*-----------------------------------------------------------------------------
- * Splinespec::select - select the subsegments to copy
- *
- * Client: gl_quilt_to_bezier	
- *-----------------------------------------------------------------------------
- */
-
-void
-Splinespec::select( )
-{
-    for( Knotspec *knotspec = kspec; knotspec; knotspec = knotspec->next ) {
-	knotspec->preselect();
-	knotspec->select();
-    }
-}
-
-/*-----------------------------------------------------------------------------
- * Splinespec::layout - 
- *
- * Client: gl_quilt_to_bezier	
- *-----------------------------------------------------------------------------
- */
-
-void
-Splinespec::layout( long ncoords )
-{
-
-    long stride = ncoords;
-    for( Knotspec *knotspec = kspec; knotspec; knotspec=knotspec->next ) {
-	knotspec->poststride = (int) stride;
-	stride *= ((knotspec->bend-knotspec->bbegin)*knotspec->order + knotspec->postoffset);
-        knotspec->preoffset  *= knotspec->prestride;
-	knotspec->prewidth  *= knotspec->poststride;
-	knotspec->postwidth *= knotspec->poststride;
-	knotspec->postoffset *= knotspec->poststride;
-        knotspec->ncoords = (int) ncoords;
-    }
-    outcpts = new REAL[stride];
-    assert( outcpts != 0 );  
-}
-
-/*-----------------------------------------------------------------------------
- * Splinespec::copy - copy the control points of current subobject
- *
- * Client: gl_quilt_to_bezier
- *-----------------------------------------------------------------------------
- */
-
-void
-Splinespec::copy( INREAL *incpts )
-{
-    kspec->copy( incpts, outcpts );
-}
-
-/*-----------------------------------------------------------------------------
- * Splinespec::setupquilt - assign all quilt variables from knotspec 
- *
- * Client: gl_quilt_to_bezier
- *-----------------------------------------------------------------------------
- */
-
-void
-Splinespec::setupquilt( Quilt_ptr quilt )
-{
-    Quiltspec_ptr qspec = quilt->qspec;
-    quilt->eqspec = qspec + dim;
-    for( Knotspec *knotspec = kspec; knotspec; knotspec=knotspec->next, qspec++ ) {
-	qspec->stride	= knotspec->poststride;
-	qspec->width	= knotspec->bend - knotspec->bbegin;
-	qspec->order	= (int) knotspec->order;
-	qspec->offset	= knotspec->postoffset;
-	qspec->index	= 0;
-	qspec->bdry[0]	= (knotspec->kleft == knotspec->kfirst) ? 1 : 0;
-	qspec->bdry[1]	= (knotspec->kright == knotspec->klast) ? 1 : 0;
-	qspec->breakpoints = new Knot[qspec->width+1];
-	Knot_ptr k =  qspec->breakpoints;
-	for( Breakpt *bk = knotspec->bbegin; bk <= knotspec->bend; bk++ )
-	    *(k++) = bk->value;
-    }
-    quilt->cpts = outcpts;
-    quilt->next = 0;
-}
-
-/*-----------------------------------------------------------------------------
- * Splinespec::transform - convert a spline to Bezier format
- *
- * Client: gl_quilt_to_bezier
- *-----------------------------------------------------------------------------
- */
-
-void
-Splinespec::transform( void )
-{
-    Knotspec *knotspec;
-    for( knotspec = kspec; knotspec; knotspec=knotspec->next )
-        knotspec->istransformed = 0;
-
-    for( knotspec = kspec; knotspec; knotspec=knotspec->next ) {
-	for( Knotspec *kspec2 = kspec; kspec2; kspec2=kspec2->next )
-	    kspec2->kspectotrans = knotspec;
-	kspec->transform( outcpts );
-	knotspec->istransformed = 1;
-    }
-}
-
-
-/*-----------------------------------------------------------------------------
- * Knotspec::Knotspec -  constuct a knot spec 
- *-----------------------------------------------------------------------------
- */
-
-Knotspec::Knotspec( void )
-{
-    bbegin = 0;
-    sbegin = 0;
-    outkbegin = 0;
-}
-
-/*-----------------------------------------------------------------------------
- * Knotspec::copy -  copy the control points along minor direction 
- *
- * Client: Splinespec::copy
- *-----------------------------------------------------------------------------
- */
-
-void
-Knotspec::copy( INREAL *inpt, REAL *outpt )
-{
-    inpt = (INREAL *) (((char *) inpt) + preoffset);
-
-    if( next ) {
-        for( REAL *lpt=outpt+prewidth; outpt != lpt; outpt += poststride ) {
-	    next->copy( inpt, outpt );
-	    inpt = (INREAL *) (((char *) inpt) + prestride);
-	}
-   } else {
-        for( REAL *lpt=outpt+prewidth; outpt != lpt; outpt += poststride ) {
-	    pt_io_copy( outpt, inpt );
-	    inpt = (INREAL *) (((char *) inpt) + prestride);
-	}
-     }
-}
-
-/*-----------------------------------------------------------------------------
- * Knotspec::showpts - print out points before transformation
- *
- * Client: Knotspec::select
- *-----------------------------------------------------------------------------
- */
-void
-Knotspec::showpts( REAL *outpt )
-{
-    if( next ) {
-        for( REAL *lpt=outpt+prewidth; outpt != lpt; outpt += poststride )
-	    next->showpts( outpt );
-    } else {
-        for( REAL *lpt=outpt+prewidth; outpt != lpt; outpt += poststride )
-	    _glu_dprintf(  "show %g %g %g\n", outpt[0], outpt[1], outpt[2] );
-    }
-}
-
-/*-----------------------------------------------------------------------------
- * Knotspec::factors - precompute scale factors 	
- *	   - overwrites knot vector, actual new knot vector is NOT produced
- *
- * Client: Knotspec::select
- *-----------------------------------------------------------------------------
- */
-
-void
-Knotspec::factors( void )
-{
-    Knot *mid = (outkend - 1) - order + bend->multi;
-    Knot_ptr fptr = sbegin;
-
-    for( Breakpt *bpt = bend; bpt >= bbegin; bpt-- ) {
-    	mid -= bpt->multi;		// last knot less than knot to insert
-	int def = bpt->def - 1;		// number of knots to insert
-	if( def <= 0 ) continue;
-	Knot kv = bpt->value;		// knot to insert
-
-	Knot *kf = (mid-def) + (order-1);
-	for( Knot *kl = kf + def; kl != kf; kl-- ) {
-	    Knot *kh, *kt;
-	    for( kt=kl, kh=mid; kt != kf; kh--, kt-- ) 
-		*(fptr++) = (kv - *kh) / (*kt - *kh);
-	    *kl = kv;
-	}
-    }
-}
-
-/*-----------------------------------------------------------------------------
- * Knotspec::insert - convert subobject in direction of kspec into Bezier
- *
- * Client: Knotspec::transform
- *-----------------------------------------------------------------------------
- */
-
-void
-Knotspec::insert( REAL *p )
-{
-    Knot_ptr fptr = sbegin;
-    REAL *srcpt = p + prewidth - poststride;
-    REAL *dstpt = p + postwidth + postoffset - poststride;
-    Breakpt *bpt = bend;
-
-   for( REAL *pend = srcpt - poststride*bpt->def; srcpt != pend; pend +=poststride ) {
-	REAL *p1 = srcpt;
-	for( REAL *p2 = srcpt-poststride; p2 != pend; p1 = p2, p2 -= poststride ) {
-	    pt_oo_sum( p1, p1, p2, *fptr, 1.0-*fptr );
-	    fptr++;
-	}
-    }
-
-    for( --bpt; bpt >= bbegin; bpt-- ) {
-
-	for( int multi = bpt->multi; multi > 0; multi-- ) {
-	    pt_oo_copy( dstpt, srcpt );
-	    dstpt -= poststride;
-	    srcpt -= poststride;	
-	}
-    
-	for( REAL *pend = srcpt - poststride*bpt->def; srcpt != pend; pend +=poststride, dstpt-=poststride ) {
-	    pt_oo_copy( dstpt, srcpt );
-	    REAL *p1 = srcpt;
-
-	    for( REAL *p2 = srcpt-poststride; p2 != pend; p1=p2, p2 -= poststride ) {
-		pt_oo_sum( p1, p1, p2, *fptr, 1.0-*fptr );
-		fptr++;
-	    }
-	}
-    }
-}
-
-/*-----------------------------------------------------------------------------
- * Knotspec::preselect - initialize kspec for processing
- *
- * Client: Splinespec::select
- *-----------------------------------------------------------------------------
- */
-
-void
-Knotspec::preselect( void )
-{
-    Knot kval; 
-
-    /* position klast after last knot of "last" breakpoint */
-    for( klast = inkend - order, kval = *klast; klast != inkend; klast++ ) 
-	if( ! identical( *klast, kval ) ) break;
-
-    /* position kfirst after last knot of "first" breakpoint */
-    for( kfirst = inkbegin+order-1, kval= *kfirst;  kfirst != inkend; kfirst++ )
-	if( ! identical( *kfirst, kval ) ) break;
-
-    /* compute multiplicity of first breakpoint */
-    Knot_ptr k;
-    for( k  = kfirst - 1; k >= inkbegin; k-- ) 
-	if( ! identical( kval, *k ) ) break;    
-    k++;
-
-    /* allocate space for breakpoints -
-       use worst case estimate on number of breakpoints */
-
-    bbegin = new Breakpt[(klast - kfirst)+1];
-    /* record multiplicity and value of first breakpoint */
-    bbegin->multi = kfirst - k;
-    bbegin->value = kval;
-    bend = bbegin;
-
-    kleft = kright = kfirst;
-}
-
-
-/*-----------------------------------------------------------------------------
- * Knotspec::select - Knotspec::select segments and precompute scale factors
- *
- * Client: Splinespec::select
- *-----------------------------------------------------------------------------
- */
-
-void
-Knotspec::select( void )
-{
-    breakpoints();
-    knots();
-    factors();
-    
-    preoffset	= kleft - (inkbegin + order);
-    postwidth	= (int)((bend - bbegin) * order);
-    prewidth 	= (int)((outkend - outkbegin) - order);
-    postoffset  = (bbegin->def > 1) ? (bbegin->def-1) : 0;
-}
- 
-/*-----------------------------------------------------------------------------
- * Knotspec::breakpoints - compute breakpoints for knotspec
- *
- * Client: Knotspec::select
- *-----------------------------------------------------------------------------
- */
-
-void
-Knotspec::breakpoints( void )
-{
-    Breakpt *ubpt	= bbegin;
-    Breakpt *ubend	= bend;
-    long    nfactors  	= 0;
-
-    ubpt->value	= ubend->value;
-    ubpt->multi	= ubend->multi;
-
-    kleft = kright;
-
-    for( ; kright != klast; kright++ ) {
-        if ( identical(*kright,ubpt->value) ) {
-	    (ubpt->multi)++;
-	} else {
-    	    ubpt->def = (int) (order - ubpt->multi);
-    	    nfactors += (ubpt->def * (ubpt->def - 1)) / 2;
-	    (++ubpt)->value = *kright;
-	    ubpt->multi = 1;
-	}
-    }
-    ubpt->def = (int) (order - ubpt->multi);
-    nfactors += (ubpt->def * (ubpt->def - 1)) / 2;
-
-    bend = ubpt;
-
-    if( nfactors ) {	    
-        sbegin = new Knot[nfactors];
-    } else {
-	sbegin = NULL;
-    }
-}
-
-
-/*-----------------------------------------------------------------------------
- * Knotspec::knots - copy relevant subsequence of knots into temporary area
- *
- * Client: Knotspec::select
- *-----------------------------------------------------------------------------
- */
-
-void
-Knotspec::knots( void )
-{
-    Knot_ptr inkpt = kleft - order;
-    Knot_ptr inkend = kright  + bend->def;
-
-    /* allocate space for knots and factors */
-    outkbegin = new Knot[inkend-inkpt];
-    Knot_ptr outkpt;
-    for( outkpt = outkbegin; inkpt != inkend; inkpt++, outkpt++ ) 
-	*outkpt = *inkpt;
-
-    outkend = outkpt;
-}
-
-
-/*-----------------------------------------------------------------------------
- * Knotspec::transform -	convert a spline along a given direction 
- *
- * Client: Splienspec::transform
- *-----------------------------------------------------------------------------
- */
-
-void
-Knotspec::transform( REAL *p )
-{
-   if( next ) {
-	if( this == kspectotrans ) {
-	    next->transform( p );
-	} else {
-	    if( istransformed ) {
-		p += postoffset;
-		for( REAL *pend = p + postwidth; p != pend; p += poststride )
-		    next->transform( p );
-	    } else {
-		REAL *pend = p + prewidth;
-		for( ; p != pend; p += poststride )
-		    next->transform( p );
-	    }
-	}
-   } else {
-	if( this == kspectotrans ) {
-	    insert( p );
-	} else {
-	    if( istransformed ) {
-		p += postoffset;
-		for( REAL *pend = p + postwidth; p != pend; p += poststride )
-		    kspectotrans->insert( p );
-	    } else {
-		REAL *pend = p + prewidth;
-		for( ; p != pend; p += poststride )
-		    kspectotrans->insert( p );
-	    }
-	}
-   }
-}
-
-/*-----------------------------------------------------------------------------
- * Knotspec::~Knotspec - free space alocated for knotspec
- *-----------------------------------------------------------------------------
- */
-
-Knotspec::~Knotspec( void )
-{
-    if( bbegin ) delete[] bbegin;
-    if( sbegin ) delete[] sbegin;
-    if( outkbegin ) delete[] outkbegin;
-}
-
-
-/*-----------------------------------------------------------------------------
- * pt_io_copy - make internal copy of input cntrl pt. of x coords
- *-----------------------------------------------------------------------------
- */
-
-void
-Knotspec::pt_io_copy( REAL *topt, INREAL *frompt )
-{
-    switch( ncoords ) {
-    case 4:
-        topt[3] = (REAL) frompt[3];
-    case 3:
-        topt[2] = (REAL) frompt[2];
-    case 2:
-        topt[1] = (REAL) frompt[1];
-    case 1:
-        topt[0] = (REAL) frompt[0];
-	break;
-    default: {
-	    for( int i = 0; i < ncoords; i++ )
-		*topt++ = (REAL) *frompt++;
-	}
-    }
-}
-
-/*-----------------------------------------------------------------------------
- * pt_oo_copy - make internal copy of internal cntrl pt. of x coords
- *-----------------------------------------------------------------------------
- */
-
-void
-Knotspec::pt_oo_copy( REAL *topt, REAL *frompt )
-{
-    switch( ncoords ) {
-    case 4:
-        topt[3] = frompt[3];
-    case 3:
-        topt[2] = frompt[2];
-    case 2:
-        topt[1] = frompt[1];
-    case 1:
-        topt[0] = frompt[0];
-	break;
-    default:
-	memcpy( topt, frompt, ncoords * sizeof( REAL ) );
-    }
-}
-
-/*-----------------------------------------------------------------------------
- * pt_oo_sum - compute affine combination of internal cntrl pts
- *-----------------------------------------------------------------------------
- */
-
-void
-Knotspec::pt_oo_sum( REAL *x, REAL *y, REAL *z, Knot a, Knot b )
-{
-    switch( ncoords ) {
-    case 4:
-        x[3] = a * y[3]  +  b * z[3];
-    case 3:
-        x[2] = a * y[2]  +  b * z[2];
-    case 2:
-        x[1] = a * y[1]  +  b * z[1];
-    case 1:
-        x[0] = a * y[0]  +  b * z[0];
-	break;
-    default: {
-          for( int i = 0; i < ncoords; i++ )
-              *x++ = a * *y++   +   b * *z++;
-    }
-    }
-}
diff --git a/src/glu/sgi/libnurbs/internals/trimline.cc b/src/glu/sgi/libnurbs/internals/trimline.cc
deleted file mode 100644
index 61f34cd38a0..00000000000
--- a/src/glu/sgi/libnurbs/internals/trimline.cc
+++ /dev/null
@@ -1,223 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * trimline.c++
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "mystdio.h"
-#include "trimline.h"
-#include "backend.h"
-
-Trimline::Trimline()
-{
-    size = 0; pts = 0; numverts = 0;
-    tinterp = &t; binterp = &b; 
-}
-
-Trimline::~Trimline()
-{
-    if( pts ) delete[] pts; 
-}
-
-void 
-Trimline::init( TrimVertex *v )
-{
-    reset();
-    grow(1);
-    append(v);
-}
-
-inline void
-Trimline::grow( long npts )
-{
-    if( size < npts ) {
-	size = 2 * npts;
-	if( pts ) delete[] pts; 
-        pts = new TrimVertex_p[size];
-    }
-}
-
-inline void
-Trimline::append( TrimVertex *v )
-{
-    assert( numverts != size ); 
-    pts[numverts++] = v;
-}
-
-void
-Trimline::init( long npts, Arc_ptr jarc, long last )
-{
-    jarcl.init( jarc, 0, last );
-    grow( npts + 2 );
-}
-
-inline void
-Trimline::swap()
-{
-    TrimVertex *tmp=tinterp; 
-    tinterp=binterp; 
-    binterp=tmp;
-}
-
-void
-Trimline::getNextPt()
-{
-    *binterp = *jarcl.getnextpt();    
-}
-
-void 
-Trimline::getPrevPt()
-{
-    *binterp = *jarcl.getprevpt();
-}
-
-/*----------------------------------------------------------------------
- * getNextPts - make arrays of pointers to trim points on left and right
- *		hulls of trim strip.
- *----------------------------------------------------------------------
- */
-void
-Trimline::getNextPts( REAL vval, Backend& backend )
-{
-    reset(); swap(); append( tinterp );
-    assert( tinterp->param[1] >= vval );
-
-    register TrimVertex *p;
-    for( p=jarcl.getnextpt() ; p->param[1] >= vval; p=jarcl.getnextpt() ) {
-	append( p ); 
-    }
-
-    /* compute and copy pointer to final point on left hull */
-    if( interpvert( last(), p, binterp, vval ) ) {
-	binterp->nuid = p->nuid;
-	backend.triangle( p, binterp, last() );
-        append( binterp );
-    }
-    jarcl.reverse();
-    (void) jarcl.getprevpt(); 	/* reset jarcl to proper position */
-    jarcl.reverse();
-}
-
-void 
-Trimline::getPrevPts( REAL vval, Backend& backend )
-{
-    reset(); swap(); append( tinterp );
-    assert( tinterp->param[1] >= vval );
-
-    register TrimVertex *q;
-    for( q=jarcl.getprevpt(); q->param[1] >= vval; q=jarcl.getprevpt() ) {
-	append( q );
-    }
-
-    /* compute and copy pointer to final point on right hull */
-    if( interpvert( q, last(), binterp, vval ) ) {
-	binterp->nuid = q->nuid;
-	backend.triangle( last(), binterp, q );
-        append( binterp );
-    }
-    jarcl.reverse();
-    (void) jarcl.getnextpt();  /* reset jarcl to proper position */
-    jarcl.reverse();
-}
-
-void
-Trimline::getNextPts( Arc_ptr botarc )
-{
-    reset(); swap(); append( tinterp );
-
-#ifndef NDEBUG
-    PwlArc *lastpwl = botarc->prev->pwlArc;
-    TrimVertex *lastpt1 = &lastpwl->pts[lastpwl->npts-1];
-#endif
-    TrimVertex *lastpt2 = botarc->pwlArc->pts;
-    register TrimVertex *p = jarcl.getnextpt();
-    for( append( p ); p != lastpt2; append( p ) ) {
-	assert( p != lastpt1 );
-	p = jarcl.getnextpt();
-    }
-}
-
-void
-Trimline::getPrevPts( Arc_ptr botarc )
-{
-    reset();  swap(); append( tinterp );
-
-    PwlArc *lastpwl = botarc->prev->pwlArc;
-    TrimVertex *lastpt1 = &lastpwl->pts[lastpwl->npts-1];
-#ifndef NDEBUG
-    TrimVertex *lastpt2 = botarc->pwlArc->pts;
-#endif
-
-    register TrimVertex *q =  jarcl.getprevpt();
-    for( append( q ); q != lastpt1; append( q ) ) {
-	assert( q != lastpt2 );
-	q = jarcl.getprevpt();
-    }
-}
-
-
-long
-Trimline::interpvert( TrimVertex *a, TrimVertex *b, TrimVertex *c, REAL vval )
-{
-    REAL denom = a->param[1] - b->param[1];
-
-    if(denom != 0) {
-	if( vval == a->param[1] ) {
-	    c->param[0] = a->param[0]; 
-	    c->param[1] = a->param[1];
-	    c->nuid = a->nuid;
-	    return 0;
-	} else if( vval == b->param[1] ) {
-	    c->param[0] = b->param[0]; 
-	    c->param[1] = b->param[1];
-	    c->nuid = b->nuid;
-	    return 0;
-	} else {
-	    REAL r = (a->param[1] - vval)/denom;
-	    c->param[0] =  a->param[0] - r * (a->param[0] - b->param[0]);
-	    c->param[1] = vval;
-	    return 1;
-	}
-    } else {
-        c->param[0] = a->param[0]; 
-        c->param[1] = a->param[1];
-	c->nuid = a->nuid;
-	return 0;
-    }
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/trimline.h b/src/glu/sgi/libnurbs/internals/trimline.h
deleted file mode 100644
index ecc884284cc..00000000000
--- a/src/glu/sgi/libnurbs/internals/trimline.h
+++ /dev/null
@@ -1,103 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * trimline.h
- *
- */
-
-#ifndef __glutrimline_h_
-#define __glutrimline_h_
-
-class Arc;
-class Backend;
-
-#include "trimvertex.h"
-#include "jarcloc.h"
-
-
-class Trimline {
-private:
-    TrimVertex**	pts; 	
-    long 		numverts;
-    long		i;
-    long		size;
-    Jarcloc		jarcl;
-    TrimVertex		t, b;
-    TrimVertex 		*tinterp, *binterp;
-    void		reset( void ) { numverts = 0; }
-    inline void		grow( long );
-    inline void		swap( void );
-    inline void		append( TrimVertex * );
-    static long		interpvert( TrimVertex *, TrimVertex *, TrimVertex *, REAL );
-
-
-
-public:
-			Trimline();
-			~Trimline();
-    void		init( TrimVertex * );
-    void		init( long, Arc_ptr, long );
-    void		getNextPt( void );
-    void		getPrevPt( void );
-    void		getNextPts( REAL, Backend & );
-    void		getPrevPts( REAL, Backend & );
-    void		getNextPts( Arc_ptr );
-    void		getPrevPts( Arc_ptr );
-    inline TrimVertex *	next( void );
-    inline TrimVertex *	prev( void ); 
-    inline TrimVertex *	first( void );
-    inline TrimVertex *	last( void );
-};
-
-inline TrimVertex *
-Trimline::next( void ) 
-{
-    if( i < numverts) return pts[i++]; else return 0; 
-} 
-
-inline TrimVertex *
-Trimline::prev( void ) 
-{
-    if( i >= 0 ) return pts[i--]; else return 0; 
-} 
-
-inline TrimVertex *
-Trimline::first( void ) 
-{
-    i = 0; return pts[i]; 
-}
-
-inline TrimVertex *
-Trimline::last( void ) 
-{
-    i = numverts; return pts[--i]; 
-}  
-#endif /* __glutrimline_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/trimregion.cc b/src/glu/sgi/libnurbs/internals/trimregion.cc
deleted file mode 100644
index 4aeb5eeac16..00000000000
--- a/src/glu/sgi/libnurbs/internals/trimregion.cc
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * trimregion.c++
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "mystdio.h"
-#include "trimregion.h"
-
-TrimRegion::TrimRegion( void )
-{
-}
-
-void
-TrimRegion::setDu( REAL du )
-{
-    oneOverDu = 1.0/du;
-}
-
-void
-TrimRegion::init( long npts, Arc_ptr extrema )
-{
-    left.init( npts, extrema, extrema->pwlArc->npts - 1 ); 
-    left.getNextPt();
-
-    right.init( npts, extrema, 0 ); 
-    right.getPrevPt();
-}
-
-void
-TrimRegion::getPts( Arc_ptr extrema )
-{
-    left.getNextPts( extrema );
-    right.getPrevPts( extrema );
-}
-
-void
-TrimRegion::getPts( Backend &backend )
-{
-    left.getNextPts( bot.vval, backend );
-    right.getPrevPts( bot.vval, backend );
-}
-
-void 
-TrimRegion::getGridExtent( void )
-{
-    getGridExtent( left.last(), right.last() );
-}
-
-void
-TrimRegion::getGridExtent( TrimVertex *l, TrimVertex *r )
-{
-    bot.ustart = (long) ((l->param[0] - uarray.uarray[0])*oneOverDu);
-    if( l->param[0] >= uarray.uarray[bot.ustart] ) bot.ustart++;
-//  if( l->param[0] > uarray.uarray[bot.ustart] ) bot.ustart++;
-    assert( l->param[0] <= uarray.uarray[bot.ustart] );
-    assert( l->param[0] >= uarray.uarray[bot.ustart-1] );
-
-    bot.uend = (long) ((r->param[0] - uarray.uarray[0])*oneOverDu);
-    if( uarray.uarray[bot.uend] >= r->param[0] ) bot.uend--;
-//  if( uarray.uarray[bot.uend] > r->param[0] ) bot.uend--;
-    assert( r->param[0] >= uarray.uarray[bot.uend] );
-    assert( r->param[0] <= uarray.uarray[bot.uend+1] );
-}
-
-int
-TrimRegion::canTile( void )
-{
-    TrimVertex *lf = left.first();
-    TrimVertex *ll = left.last();
-    TrimVertex *l = ( ll->param[0] > lf->param[0] ) ? ll : lf; 
-
-    TrimVertex *rf = right.first();
-    TrimVertex *rl = right.last();
-    TrimVertex *r = ( rl->param[0] < rf->param[0] ) ? rl : rf;
-    return (l->param[0] <= r->param[0]) ? 1 : 0;
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/trimregion.h b/src/glu/sgi/libnurbs/internals/trimregion.h
deleted file mode 100644
index ee15d7b9888..00000000000
--- a/src/glu/sgi/libnurbs/internals/trimregion.h
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * trimregion.h
- *
- */
-
-#ifndef __glutrimregion_h_
-#define __glutrimregion_h_
-
-#include "trimline.h"
-#include "gridline.h"
-#include "uarray.h"
-
-class Arc;
-class Backend;
-
-class TrimRegion {
-public:
-			TrimRegion();
-    Trimline		left;
-    Trimline		right;
-    Gridline		top;
-    Gridline		bot;
-    Uarray		uarray;
-
-    void		init( REAL );
-    void		advance( REAL, REAL, REAL );
-    void		setDu( REAL );
-    void		init( long, Arc_ptr );
-    void		getPts( Arc_ptr );
-    void		getPts( Backend & );
-    void		getGridExtent( TrimVertex *, TrimVertex * );
-    void		getGridExtent( void );
-    int			canTile( void );
-private:
-    REAL		oneOverDu;
-};
-
-inline void
-TrimRegion::init( REAL vval ) 
-{
-    bot.vval = vval;
-}
-
-inline void
-TrimRegion::advance( REAL topVindex, REAL botVindex, REAL botVval )
-{
-    top.vindex	= (long) topVindex;
-    bot.vindex	= (long) botVindex;
-    top.vval	= bot.vval;
-    bot.vval	= botVval;
-    top.ustart	= bot.ustart;
-    top.uend	= bot.uend;
-}
-#endif /* __glutrimregion_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/trimvertex.h b/src/glu/sgi/libnurbs/internals/trimvertex.h
deleted file mode 100644
index 2780b764a54..00000000000
--- a/src/glu/sgi/libnurbs/internals/trimvertex.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * trimvertex.h
- *
- */
-
-#ifndef __glutrimvertex_h_
-#define __glutrimvertex_h_
-
-#include "types.h"
-
-/*#define USE_OPTTT*/
-
-class TrimVertex { /* a vertex on a trim curve */
-public:
-    REAL		param[2];	/* parametric space coords */
-#ifdef USE_OPTTT
-    REAL                cache_point[4]; //only when USE_OPTTT is on in slicer.c++
-    REAL                cache_normal[3];
-#endif
-    long		nuid;
-};
-
-typedef class TrimVertex *TrimVertex_p;
-
-inline REAL  
-det3( TrimVertex *a, TrimVertex *b, TrimVertex *c ) 
-{         
-    return a->param[0] * (b->param[1]-c->param[1]) + 
-	   b->param[0] * (c->param[1]-a->param[1]) + 
-	   c->param[0] * (a->param[1]-b->param[1]);
-}
-
-#endif /* __glutrimvertex_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/trimvertpool.cc b/src/glu/sgi/libnurbs/internals/trimvertpool.cc
deleted file mode 100644
index 3e5bd703806..00000000000
--- a/src/glu/sgi/libnurbs/internals/trimvertpool.cc
+++ /dev/null
@@ -1,119 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * trimvertexpool.c++
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "mystdio.h"
-#include "mystring.h"
-#include "trimvertex.h"
-#include "trimvertpool.h"
-#include "bufpool.h"
-
-/*----------------------------------------------------------------------------
- * TrimVertexPool::TrimVertexPool 
- *----------------------------------------------------------------------------
- */
-TrimVertexPool::TrimVertexPool( void )
-	: pool( sizeof(TrimVertex)*3, 32, "Threevertspool" )
-{
-    // initialize array of pointers to vertex lists
-    nextvlistslot = 0;
-    vlistsize = INIT_VERTLISTSIZE;
-    vlist = new TrimVertex_p[vlistsize];
-}
-
-/*----------------------------------------------------------------------------
- * TrimVertexPool::~TrimVertexPool 
- *----------------------------------------------------------------------------
- */
-TrimVertexPool::~TrimVertexPool( void )
-{
-    // free all arrays of TrimVertices vertices
-    while( nextvlistslot ) {
-	delete [] vlist[--nextvlistslot];
-    }
-
-    // reallocate space for array of pointers to vertex lists
-    if( vlist ) delete[] vlist;
-}
-
-/*----------------------------------------------------------------------------
- * TrimVertexPool::clear 
- *----------------------------------------------------------------------------
- */
-void
-TrimVertexPool::clear( void )
-{
-    // reinitialize pool of 3 vertex arrays    
-    pool.clear();
-
-    // free all arrays of TrimVertices vertices
-    while( nextvlistslot ) {
-	delete [] vlist[--nextvlistslot];
-	vlist[nextvlistslot] = 0;
-    }
-
-    // reallocate space for array of pointers to vertex lists
-    if( vlist ) delete[] vlist;
-    vlist = new TrimVertex_p[vlistsize];
-}
-
-
-/*----------------------------------------------------------------------------
- * TrimVertexPool::get - allocate a vertex list
- *----------------------------------------------------------------------------
- */
-TrimVertex *
-TrimVertexPool::get( int n )
-{
-    TrimVertex	*v;
-    if( n == 3 ) {
-	v = (TrimVertex *) pool.new_buffer();
-    } else {
-        if( nextvlistslot == vlistsize ) {
-	    vlistsize *= 2;
-	    TrimVertex_p *nvlist = new TrimVertex_p[vlistsize];
-	    memcpy( nvlist, vlist, nextvlistslot * sizeof(TrimVertex_p) );
-	    if( vlist ) delete[] vlist;
-	    vlist = nvlist;
-        }
-        v = vlist[nextvlistslot++] = new TrimVertex[n];
-    }
-    return v;
-}
diff --git a/src/glu/sgi/libnurbs/internals/trimvertpool.h b/src/glu/sgi/libnurbs/internals/trimvertpool.h
deleted file mode 100644
index ebd3c04b1f1..00000000000
--- a/src/glu/sgi/libnurbs/internals/trimvertpool.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * trimvertexpool.h
- *
- */
-
-#ifndef __glutrimvertpool_h_
-#define __glutrimvertpool_h_
-
-#include "bufpool.h"
-
-class TrimVertex;
-
-#define INIT_VERTLISTSIZE  200
-
-class TrimVertexPool {
-public:
-    			TrimVertexPool( void );
-    			~TrimVertexPool( void );
-    void		clear( void );
-    TrimVertex *	get( int );
-private:
-    Pool		pool;
-    TrimVertex **	vlist;
-    int			nextvlistslot;
-    int			vlistsize;
-};
-#endif /* __glutrimvertpool_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/types.h b/src/glu/sgi/libnurbs/internals/types.h
deleted file mode 100644
index 8b59625cff5..00000000000
--- a/src/glu/sgi/libnurbs/internals/types.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * types.h
- *
- */
-
-#ifndef __glutypes_h_
-#define __glutypes_h_
-
-//typedef double		INREAL;
-#define INREAL          float
-typedef float		REAL;
-typedef void 		(*Pfvv)( void );
-typedef void 		(*Pfvf)( float * );
-typedef int		(*cmpfunc)(const void *, const void *);
-typedef	REAL		Knot, *Knot_ptr;/* knot values */
-
-#endif /* __glutypes_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/uarray.cc b/src/glu/sgi/libnurbs/internals/uarray.cc
deleted file mode 100644
index 4b3329c0f27..00000000000
--- a/src/glu/sgi/libnurbs/internals/uarray.cc
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * uarray.c++
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "mystdio.h"
-#include "uarray.h"
-#include "arc.h"
-
-Uarray::Uarray( void )
-{
-    uarray = 0;
-    size = 0;
-    ulines = 0;
-}
-
-Uarray::~Uarray( void )
-{
-    if( uarray ) delete[] uarray;		
-}
-
-long
-Uarray::init( REAL delta, Arc_ptr lo, Arc_ptr hi )
-{
-    ulines = (long) ((hi->tail()[0] - lo->tail()[0])/delta) + 3;
-    if( size < ulines ) {
-	size = ulines * 2;
-	if( uarray ) delete[] uarray;		
-	uarray = new REAL[size];
-	assert( uarray != 0);
-    }
-    uarray[0] = lo->tail()[0] - delta/2.0;
-    for( long i = 1 ; i != ulines; i++ )
-	uarray[i] = uarray[0] + i*delta;
-    return ulines;
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/uarray.h b/src/glu/sgi/libnurbs/internals/uarray.h
deleted file mode 100644
index cc6fae1b754..00000000000
--- a/src/glu/sgi/libnurbs/internals/uarray.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * uarray.h
- *
- */
-
-#ifndef __gluuarray_h_
-#define __gluuarray_h_
-
-#include "types.h"
-
-class Arc;
-typedef class Arc *Arc_ptr; 
-
-class Uarray {
-private:
-    long		size;
-    long		ulines;
-public:
-			Uarray();
-			~Uarray();
-    long		init( REAL, Arc_ptr, Arc_ptr );
-    REAL *		uarray;
-};
-
-#endif /* __gluuarray_h_ */
diff --git a/src/glu/sgi/libnurbs/internals/varray.cc b/src/glu/sgi/libnurbs/internals/varray.cc
deleted file mode 100644
index 1cb235443ad..00000000000
--- a/src/glu/sgi/libnurbs/internals/varray.cc
+++ /dev/null
@@ -1,152 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-**
-** http://oss.sgi.com/projects/FreeB
-**
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-**
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-**
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-*/
-
-/*
- * varray.c++
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "mystdio.h"
-#include "varray.h"
-#include "arc.h"
-#include "simplemath.h"         // glu_abs()
-
-#define TINY 0.0001
-inline long sgn( REAL x ) 
-{
-    return (x < -TINY) ? -1 :  ((x > TINY) ? 1 : 0 );
-}
-
-
-Varray::Varray( void )
-{
-    int i;
-
-    varray = 0;
-    size = 0;
-    numquads = 0;
-
-    for (i = 0; i < 1000; i++) {
-        vval[i] = 0;
-        voffset[i] = 0;
-    }
-}
-
-Varray::~Varray( void )
-{
-    if( varray ) delete[] varray; 
-}
-
-inline void
-Varray::update( Arc_ptr arc, long dir[2], REAL val )
-{
-    register long ds = sgn(arc->tail()[0] - arc->prev->tail()[0]);
-    register long dt = sgn(arc->tail()[1] - arc->prev->tail()[1]);
-
-    if( dir[0] != ds || dir[1] != dt ) {
-	dir[0] = ds;
-	dir[1] = dt;
-	append( val );
-    }
-}
-
-void
-Varray::grow( long guess )
-{
-    if( size < guess ) {
-	size = guess * 2;
-	if( varray ) delete[] varray; 
-	varray = new REAL[size];
-	assert( varray != 0 );
-    }
-}
-
-long
-Varray::init( REAL delta, Arc_ptr toparc, Arc_ptr botarc )
-{
-    Arc_ptr left = toparc->next;
-    Arc_ptr right = toparc;
-    long ldir[2], rdir[2];
-    
-    ldir[0] = sgn( left->tail()[0] - left->prev->tail()[0] );
-    ldir[1] = sgn( left->tail()[1] - left->prev->tail()[1] );
-    rdir[0] = sgn( right->tail()[0] - right->prev->tail()[0] );
-    rdir[1] = sgn( right->tail()[1] - right->prev->tail()[1] );
-
-    vval[0] = toparc->tail()[1];
-    numquads = 0;
-
-    while( 1 ) {
-	switch( sgn( left->tail()[1] - right->prev->tail()[1] ) ) {
-	case 1:
-	    left = left->next;
-	    update( left, ldir, left->prev->tail()[1] );
-	    break;
-	case -1: 
-	    right = right->prev;
-	    update( right, rdir, right->tail()[1] );
-	    break;
-	case 0:
-	    if( glu_abs(left->tail()[1] - botarc->tail()[1]) < TINY) goto end;
-            if( glu_abs(left->tail()[0]-right->prev->tail()[0]) < TINY &&
-                glu_abs(left->tail()[1]-right->prev->tail()[1]) < TINY) goto end;
-	    left = left->next;
-	    break;
- 	}
-    }
-
-end:
-    append( botarc->tail()[1] );
-
-    grow( ((long) ((vval[0] - vval[numquads])/delta)) + numquads + 2 );
-
-    long i, index = 0;
-    for( i=0; i<numquads; i++ ) {
-	voffset[i] = index;
-        varray[index++] = vval[i];
-	REAL dist = vval[i] - vval[i+1];
-	if( dist > delta ) {
-	    long steps = ((long) (dist/delta)) +1;
-	    float deltav = - dist / (REAL) steps;
-	    for( long j=1; j<steps; j++ ) 
-		varray[index++] = vval[i] + j * deltav; 
-	}
-    }
-    voffset[i] = index;
-    varray[index] = vval[i];
-    return index;
-}
-
diff --git a/src/glu/sgi/libnurbs/internals/varray.h b/src/glu/sgi/libnurbs/internals/varray.h
deleted file mode 100644
index b12ff837c85..00000000000
--- a/src/glu/sgi/libnurbs/internals/varray.h
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-/*
- * varray.h
- *
- */
-
-#ifndef __gluvarray_h_
-#define __gluvarray_h_
-
-#include "types.h"
-
-class Arc;
-
-class Varray {
-public:
-			Varray();
-			~Varray();
-    long		init( REAL, Arc *, Arc * );
-    REAL *		varray;
-    REAL		vval[1000];
-    long		voffset[1000];
-    long 		numquads;
-
-private:
-    long		size;
-    inline void		update( Arc *, long[2], REAL );
-    void		grow( long );
-    inline void		append( REAL );
-};
-
-inline void
-Varray::append( REAL v ) 
-{
-    if( v != vval[numquads] )
-        vval[++numquads] = v; 
-}
-
-
-#endif /* __gluvarray_h_ */