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/*
** 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.h
*
* $Date: 2001/03/17 00:25:41 $ $Revision: 1.1 $
* $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/internals/reader.h,v 1.1 2001/03/17 00:25:41 brianp Exp $
*/
#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;
struct 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; }
};
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 )
{ type = _type; owner = 0; next = 0; used = 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; }
};
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 )
{ type = _type; owner = 0; next = 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; }
};
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; }
Property( long _tag, INREAL _value )
{ type = 0; tag = _tag; value = (REAL) _value; }
};
class NurbsTessellator;
#endif /* __glureader_h_ */
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