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Diffstat (limited to 'src/glu/sgi/libtess/tess.h')
| -rw-r--r-- | src/glu/sgi/libtess/tess.h | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/src/glu/sgi/libtess/tess.h b/src/glu/sgi/libtess/tess.h deleted file mode 100644 index 16249608814..00000000000 --- a/src/glu/sgi/libtess/tess.h +++ /dev/null @@ -1,165 +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. - */ -/* -** Author: Eric Veach, July 1994. -** -*/ - -#ifndef __tess_h_ -#define __tess_h_ - -#include <GL/glu.h> -#include <setjmp.h> -#include "mesh.h" -#include "dict.h" -#include "priorityq.h" - -/* The begin/end calls must be properly nested. We keep track of - * the current state to enforce the ordering. - */ -enum TessState { T_DORMANT, T_IN_POLYGON, T_IN_CONTOUR }; - -/* We cache vertex data for single-contour polygons so that we can - * try a quick-and-dirty decomposition first. - */ -#define TESS_MAX_CACHE 100 - -typedef struct CachedVertex { - GLdouble coords[3]; - void *data; -} CachedVertex; - -struct GLUtesselator { - - /*** state needed for collecting the input data ***/ - - enum TessState state; /* what begin/end calls have we seen? */ - - GLUhalfEdge *lastEdge; /* lastEdge->Org is the most recent vertex */ - GLUmesh *mesh; /* stores the input contours, and eventually - the tessellation itself */ - - void (GLAPIENTRY *callError)( GLenum errnum ); - - /*** state needed for projecting onto the sweep plane ***/ - - GLdouble normal[3]; /* user-specified normal (if provided) */ - GLdouble sUnit[3]; /* unit vector in s-direction (debugging) */ - GLdouble tUnit[3]; /* unit vector in t-direction (debugging) */ - - /*** state needed for the line sweep ***/ - - GLdouble relTolerance; /* tolerance for merging features */ - GLenum windingRule; /* rule for determining polygon interior */ - GLboolean fatalError; /* fatal error: needed combine callback */ - - Dict *dict; /* edge dictionary for sweep line */ - PriorityQ *pq; /* priority queue of vertex events */ - GLUvertex *event; /* current sweep event being processed */ - - void (GLAPIENTRY *callCombine)( GLdouble coords[3], void *data[4], - GLfloat weight[4], void **outData ); - - /*** state needed for rendering callbacks (see render.c) ***/ - - GLboolean flagBoundary; /* mark boundary edges (use EdgeFlag) */ - GLboolean boundaryOnly; /* Extract contours, not triangles */ - GLUface *lonelyTriList; - /* list of triangles which could not be rendered as strips or fans */ - - void (GLAPIENTRY *callBegin)( GLenum type ); - void (GLAPIENTRY *callEdgeFlag)( GLboolean boundaryEdge ); - void (GLAPIENTRY *callVertex)( void *data ); - void (GLAPIENTRY *callEnd)( void ); - void (GLAPIENTRY *callMesh)( GLUmesh *mesh ); - - - /*** state needed to cache single-contour polygons for renderCache() */ - - GLboolean emptyCache; /* empty cache on next vertex() call */ - int cacheCount; /* number of cached vertices */ - CachedVertex cache[TESS_MAX_CACHE]; /* the vertex data */ - - /*** rendering callbacks that also pass polygon data ***/ - void (GLAPIENTRY *callBeginData)( GLenum type, void *polygonData ); - void (GLAPIENTRY *callEdgeFlagData)( GLboolean boundaryEdge, - void *polygonData ); - void (GLAPIENTRY *callVertexData)( void *data, void *polygonData ); - void (GLAPIENTRY *callEndData)( void *polygonData ); - void (GLAPIENTRY *callErrorData)( GLenum errnum, void *polygonData ); - void (GLAPIENTRY *callCombineData)( GLdouble coords[3], void *data[4], - GLfloat weight[4], void **outData, - void *polygonData ); - - jmp_buf env; /* place to jump to when memAllocs fail */ - - void *polygonData; /* client data for current polygon */ -}; - -void GLAPIENTRY __gl_noBeginData( GLenum type, void *polygonData ); -void GLAPIENTRY __gl_noEdgeFlagData( GLboolean boundaryEdge, void *polygonData ); -void GLAPIENTRY __gl_noVertexData( void *data, void *polygonData ); -void GLAPIENTRY __gl_noEndData( void *polygonData ); -void GLAPIENTRY __gl_noErrorData( GLenum errnum, void *polygonData ); -void GLAPIENTRY __gl_noCombineData( GLdouble coords[3], void *data[4], - GLfloat weight[4], void **outData, - void *polygonData ); - -#define CALL_BEGIN_OR_BEGIN_DATA(a) \ - if (tess->callBeginData != &__gl_noBeginData) \ - (*tess->callBeginData)((a),tess->polygonData); \ - else (*tess->callBegin)((a)); - -#define CALL_VERTEX_OR_VERTEX_DATA(a) \ - if (tess->callVertexData != &__gl_noVertexData) \ - (*tess->callVertexData)((a),tess->polygonData); \ - else (*tess->callVertex)((a)); - -#define CALL_EDGE_FLAG_OR_EDGE_FLAG_DATA(a) \ - if (tess->callEdgeFlagData != &__gl_noEdgeFlagData) \ - (*tess->callEdgeFlagData)((a),tess->polygonData); \ - else (*tess->callEdgeFlag)((a)); - -#define CALL_END_OR_END_DATA() \ - if (tess->callEndData != &__gl_noEndData) \ - (*tess->callEndData)(tess->polygonData); \ - else (*tess->callEnd)(); - -#define CALL_COMBINE_OR_COMBINE_DATA(a,b,c,d) \ - if (tess->callCombineData != &__gl_noCombineData) \ - (*tess->callCombineData)((a),(b),(c),(d),tess->polygonData); \ - else (*tess->callCombine)((a),(b),(c),(d)); - -#define CALL_ERROR_OR_ERROR_DATA(a) \ - if (tess->callErrorData != &__gl_noErrorData) \ - (*tess->callErrorData)((a),tess->polygonData); \ - else (*tess->callError)((a)); - -#endif |