1 /* 2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008) 3 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice including the dates of first publication and 13 * either this permission notice or a reference to 14 * http://oss.sgi.com/projects/FreeB/ 15 * shall be included in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 21 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF 22 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 23 * SOFTWARE. 24 * 25 * Except as contained in this notice, the name of Silicon Graphics, Inc. 26 * shall not be used in advertising or otherwise to promote the sale, use or 27 * other dealings in this Software without prior written authorization from 28 * Silicon Graphics, Inc. 29 */ 30 31 /* 32 * nurbstess.h 33 * 34 */ 35 36 #ifndef __glunurbstess_h_ 37 #define __glunurbstess_h_ 38 39 #include "mysetjmp.h" 40 #include "subdivider.h" 41 #include "renderhints.h" 42 #include "backend.h" 43 #include "maplist.h" 44 #include "reader.h" 45 #include "nurbsconsts.h" 46 47 struct Knotvector; 48 class Quilt; 49 class DisplayList; 50 class BasicCurveEvaluator; 51 class BasicSurfaceEvaluator; 52 53 class NurbsTessellator { 54 public: 55 NurbsTessellator( BasicCurveEvaluator &c, 56 BasicSurfaceEvaluator &e ); 57 virtual ~NurbsTessellator( void ); 58 59 void getnurbsproperty( long, INREAL * ); 60 void getnurbsproperty( long, long, INREAL * ); 61 void setnurbsproperty( long, INREAL ); 62 void setnurbsproperty( long, long, INREAL ); 63 void setnurbsproperty( long, long, INREAL * ); 64 void setnurbsproperty( long, long, INREAL *, long, long ); 65 66 // called before a tessellation begins/ends 67 virtual void bgnrender( void ); 68 virtual void endrender( void ); 69 70 // called to make a display list of the output vertices 71 virtual void makeobj( int n ); 72 virtual void closeobj( void ); 73 74 // called when a error occurs 75 virtual void errorHandler( int ); 76 77 void bgnsurface( long ); 78 void endsurface( void ); 79 void bgntrim( void ); 80 void endtrim( void ); 81 void bgncurve( long ); 82 void endcurve( void ); 83 void pwlcurve( long, INREAL[], long, long ); 84 void nurbscurve( long, INREAL[], long, INREAL[], long, long ); 85 void nurbssurface( long, INREAL[], long, INREAL[], long, long, 86 INREAL[], long, long, long ); 87 88 void defineMap( long, long, long ); 89 void redefineMaps( void ); 90 91 // recording of input description 92 void discardRecording( void * ); 93 void * beginRecording( void ); 94 void endRecording( void ); 95 void playRecording( void * ); 96 97 //for optimizing untrimmed nurbs in the case of domain distance sampling 98 void set_domain_distance_u_rate(REAL u_rate); 99 void set_domain_distance_v_rate(REAL v_rate); 100 void set_is_domain_distance_sampling(int flag); 101 102 103 protected: 104 Renderhints renderhints; 105 Maplist maplist; 106 Backend backend; 107 108 private: 109 110 void resetObjects( void ); 111 int do_check_knots( Knotvector *, const char * ); 112 void do_nurbserror( int ); 113 void do_bgncurve( O_curve * ); 114 void do_endcurve( void ); 115 void do_freeall( void ); 116 void do_freecurveall( O_curve * ); 117 void do_freebgntrim( O_trim * ); 118 void do_freebgncurve( O_curve * ); 119 void do_freepwlcurve( O_pwlcurve * ); 120 void do_freenurbscurve( O_nurbscurve * ); 121 void do_freenurbssurface( O_nurbssurface * ); 122 void do_freebgnsurface( O_surface * ); 123 void do_bgnsurface( O_surface * ); 124 void do_endsurface( void ); 125 void do_bgntrim( O_trim * ); 126 void do_endtrim( void ); 127 void do_pwlcurve( O_pwlcurve * ); 128 void do_nurbscurve( O_nurbscurve * ); 129 void do_nurbssurface( O_nurbssurface * ); 130 void do_freenurbsproperty( Property * ); 131 void do_setnurbsproperty( Property * ); 132 void do_setnurbsproperty2( Property * ); 133 134 Subdivider subdivider; 135 JumpBuffer* jumpbuffer; 136 Pool o_pwlcurvePool; 137 Pool o_nurbscurvePool; 138 Pool o_curvePool; 139 Pool o_trimPool; 140 Pool o_surfacePool; 141 Pool o_nurbssurfacePool; 142 Pool propertyPool; 143 public: 144 Pool quiltPool; 145 private: 146 TrimVertexPool extTrimVertexPool; 147 148 int inSurface; /* bgnsurface seen */ 149 int inCurve; /* bgncurve seen */ 150 int inTrim; /* bgntrim seen */ 151 int isCurveModified; /* curve changed */ 152 int isTrimModified; /* trim curves changed */ 153 int isSurfaceModified; /* surface changed */ 154 int isDataValid; /* all data is good */ 155 int numTrims; /* valid trim regions */ 156 int playBack; 157 158 O_trim** nextTrim; /* place to link o_trim */ 159 O_curve** nextCurve; /* place to link o_curve */ 160 O_nurbscurve** nextNurbscurve; /* place to link o_nurbscurve */ 161 O_pwlcurve** nextPwlcurve; /* place to link o_pwlcurve */ 162 O_nurbssurface** nextNurbssurface; /* place to link o_nurbssurface */ 163 164 O_surface* currentSurface; 165 O_trim* currentTrim; 166 O_curve* currentCurve; 167 168 DisplayList *dl; 169 170 }; 171 172 #endif /* __glunurbstess_h_ */ 173
Indexes created Thu Jul 23 00:25:05 UTC 2026