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WIP Added libtess library extracted from
https://cgit.freedesktop.org/mesa/glu/ The library is stable (it should be, since it is in use since 1994), but it is not thread safe: Its callbacks do not receive any pointer to a context.
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src/glu-libtess/include/glu-libtess.h
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src/glu-libtess/include/glu-libtess.h
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/*
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* SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
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* Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice including the dates of first publication and
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* either this permission notice or a reference to
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* http://oss.sgi.com/projects/FreeB/
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* shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of Silicon Graphics, Inc.
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* shall not be used in advertising or otherwise to promote the sale, use or
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* other dealings in this Software without prior written authorization from
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* Silicon Graphics, Inc.
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*/
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#ifndef __glu_libtess_h__
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#define __glu_libtess_h__
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#define USE_MGL_NAMESPACE
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#define gluNewTess mgluNewTess
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#define gluDeleteTess mgluDeleteTess
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#define gluTessBeginPolygon mgluTessBeginPolygon
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#define gluTessBeginContour mgluTessBeginContour
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#define gluTessVertex mgluTessVertex
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#define gluTessEndPolygon mgluTessEndPolygon
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#define gluTessEndContour mgluTessEndContour
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#define gluTessProperty mgluTessProperty
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#define gluTessNormal mgluTessNormal
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#define gluTessCallback mgluTessCallback
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#define gluGetTessProperty mgluGetTessProperty
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#define gluBeginPolygon mgluBeginPolygon
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#define gluNextContour mgluNextContour
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#define gluEndPolygon mgluEndPolygon
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#define GLAPI extern
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#define GLAPIENTRY
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typedef unsigned int GLenum;
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typedef unsigned char GLboolean;
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typedef unsigned int GLbitfield;
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typedef signed char GLbyte;
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typedef short GLshort;
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typedef int GLint;
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typedef int GLsizei;
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typedef unsigned char GLubyte;
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typedef unsigned short GLushort;
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typedef unsigned int GLuint;
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typedef float GLfloat;
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typedef float GLclampf;
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typedef double GLdouble;
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typedef double GLclampd;
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typedef void GLvoid;
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/* Boolean */
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#define GL_TRUE 1
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#define GL_FALSE 0
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/* BeginMode */
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#define GL_LINE_LOOP 0x0002
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#define GL_TRIANGLES 0x0004
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#define GL_TRIANGLE_STRIP 0x0005
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#define GL_TRIANGLE_FAN 0x0006
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#ifndef GLAPIENTRYP
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#define GLAPIENTRYP GLAPIENTRY *
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef __glu_h__
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static_assert(false, "glu-libtess.h: glu.h must not be included!")
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#endif
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#ifdef __gl_h__
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static_assert(false, "glu-libtess.h: gl.h must not be included!")
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#endif
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/*************************************************************/
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/* StringName */
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#define GLU_VERSION 100800
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#define GLU_EXTENSIONS 100801
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/* ErrorCode */
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#define GLU_INVALID_ENUM 100900
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#define GLU_INVALID_VALUE 100901
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#define GLU_OUT_OF_MEMORY 100902
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#define GLU_INCOMPATIBLE_GL_VERSION 100903
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#define GLU_INVALID_OPERATION 100904
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/* TessCallback */
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#define GLU_TESS_BEGIN 100100
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#define GLU_BEGIN 100100
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#define GLU_TESS_VERTEX 100101
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#define GLU_VERTEX 100101
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#define GLU_TESS_END 100102
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#define GLU_END 100102
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#define GLU_TESS_ERROR 100103
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#define GLU_TESS_EDGE_FLAG 100104
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#define GLU_EDGE_FLAG 100104
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#define GLU_TESS_COMBINE 100105
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#define GLU_TESS_BEGIN_DATA 100106
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#define GLU_TESS_VERTEX_DATA 100107
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#define GLU_TESS_END_DATA 100108
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#define GLU_TESS_ERROR_DATA 100109
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#define GLU_TESS_EDGE_FLAG_DATA 100110
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#define GLU_TESS_COMBINE_DATA 100111
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/* TessContour */
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#define GLU_CW 100120
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#define GLU_CCW 100121
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#define GLU_INTERIOR 100122
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#define GLU_EXTERIOR 100123
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#define GLU_UNKNOWN 100124
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/* TessProperty */
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#define GLU_TESS_WINDING_RULE 100140
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#define GLU_TESS_BOUNDARY_ONLY 100141
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#define GLU_TESS_TOLERANCE 100142
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/* TessError */
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#define GLU_TESS_ERROR1 100151
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#define GLU_TESS_ERROR2 100152
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#define GLU_TESS_ERROR3 100153
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#define GLU_TESS_ERROR4 100154
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#define GLU_TESS_ERROR5 100155
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#define GLU_TESS_ERROR6 100156
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#define GLU_TESS_ERROR7 100157
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#define GLU_TESS_ERROR8 100158
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#define GLU_TESS_MISSING_BEGIN_POLYGON 100151
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#define GLU_TESS_MISSING_BEGIN_CONTOUR 100152
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#define GLU_TESS_MISSING_END_POLYGON 100153
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#define GLU_TESS_MISSING_END_CONTOUR 100154
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#define GLU_TESS_COORD_TOO_LARGE 100155
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#define GLU_TESS_NEED_COMBINE_CALLBACK 100156
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/* TessWinding */
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#define GLU_TESS_WINDING_ODD 100130
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#define GLU_TESS_WINDING_NONZERO 100131
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#define GLU_TESS_WINDING_POSITIVE 100132
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#define GLU_TESS_WINDING_NEGATIVE 100133
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#define GLU_TESS_WINDING_ABS_GEQ_TWO 100134
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/*************************************************************/
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#ifdef __cplusplus
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class GLUtesselator;
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#else
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typedef struct GLUtesselator GLUtesselator;
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#endif
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typedef GLUtesselator GLUtesselatorObj;
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typedef GLUtesselator GLUtriangulatorObj;
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#define GLU_TESS_MAX_COORD 1.0e150
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/* Internal convenience typedefs */
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typedef void (GLAPIENTRYP _GLUfuncptr)(void);
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GLAPI void GLAPIENTRY gluBeginPolygon (GLUtesselator* tess);
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GLAPI void GLAPIENTRY gluDeleteTess (GLUtesselator* tess);
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GLAPI void GLAPIENTRY gluEndPolygon (GLUtesselator* tess);
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GLAPI void GLAPIENTRY gluGetTessProperty (GLUtesselator* tess, GLenum which, GLdouble* data);
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GLAPI GLUtesselator* GLAPIENTRY gluNewTess (void);
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GLAPI void GLAPIENTRY gluNextContour (GLUtesselator* tess, GLenum type);
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GLAPI void GLAPIENTRY gluTessBeginContour (GLUtesselator* tess);
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GLAPI void GLAPIENTRY gluTessBeginPolygon (GLUtesselator* tess, GLvoid* data);
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GLAPI void GLAPIENTRY gluTessCallback (GLUtesselator* tess, GLenum which, _GLUfuncptr CallBackFunc);
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GLAPI void GLAPIENTRY gluTessEndContour (GLUtesselator* tess);
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GLAPI void GLAPIENTRY gluTessEndPolygon (GLUtesselator* tess);
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GLAPI void GLAPIENTRY gluTessNormal (GLUtesselator* tess, GLdouble valueX, GLdouble valueY, GLdouble valueZ);
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GLAPI void GLAPIENTRY gluTessProperty (GLUtesselator* tess, GLenum which, GLdouble data);
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GLAPI void GLAPIENTRY gluTessVertex (GLUtesselator* tess, GLdouble *location, GLvoid* data);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __glu_libtess_h__ */
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