Remove libGLU

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

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

1 files changed, 0 insertions, 504 deletions

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;
-}
-