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/*
* 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; }
};
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; }
};
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; }
};
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; save = 0; }
};
class NurbsTessellator;
#endif /* __glureader_h_ */
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