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Diffstat (limited to 'src/glu/mesa/tess.h')
| -rw-r--r-- | src/glu/mesa/tess.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/src/glu/mesa/tess.h b/src/glu/mesa/tess.h new file mode 100644 index 00000000000..53d673ccbea --- /dev/null +++ b/src/glu/mesa/tess.h @@ -0,0 +1,121 @@ +/* $Id: tess.h,v 1.1 1999/08/19 00:55:42 jtg Exp $ */ + +/* + * Mesa 3-D graphics library + * Version: 3.1 + * Copyright (C) 1995-1998 Brian Paul + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free + * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + + +/* + * $Log: tess.h,v $ + * Revision 1.1 1999/08/19 00:55:42 jtg + * Initial revision + * + * Revision 1.5 1999/02/27 13:55:31 brianp + * fixed BeOS-related GLU typedef problems + * + * Revision 1.4 1999/01/03 03:23:15 brianp + * now using GLAPIENTRY and GLCALLBACK keywords (Ted Jump) + * + * Revision 1.3 1997/10/29 02:02:20 brianp + * various MS Windows compiler changes (David Bucciarelli, v20 3dfx driver) + * + * Revision 1.2 1997/05/24 13:30:58 brianp + * added TESS_H multi-inclusion prevention test + * + * Revision 1.1 1996/09/27 01:19:39 brianp + * Initial revision + * + */ + + +/* + * This file is part of the polygon tesselation code contributed by + * Bogdan Sikorski + */ + + +#ifndef TESS_H +#define TESS_H + + +#include "gluP.h" + +#define EPSILON 1e-06 /* epsilon for double precision compares */ + +typedef enum +{ + OXY, + OYZ, + OXZ +} projection_type; + +typedef struct callbacks_str +{ + void (GLCALLBACK *begin)( GLenum mode ); + void (GLCALLBACK *edgeFlag)( GLboolean flag ); + void (GLCALLBACK *vertex)( GLvoid *v ); + void (GLCALLBACK *end)( void ); + void (GLCALLBACK *error)( GLenum err ); +} tess_callbacks; + +typedef struct vertex_str +{ + void *data; + GLdouble location[3]; + GLdouble x,y; + GLboolean edge_flag; + struct vertex_str *shadow_vertex; + struct vertex_str *next,*previous; +} tess_vertex; + +typedef struct contour_str +{ + GLenum type; + GLuint vertex_cnt; + GLdouble area; + GLenum orientation; + struct vertex_str *vertices,*last_vertex; + struct contour_str *next,*previous; +} tess_contour; + +typedef struct polygon_str +{ + GLuint vertex_cnt; + GLdouble A,B,C,D; + GLdouble area; + GLenum orientation; + struct vertex_str *vertices,*last_vertex; +} tess_polygon; + +struct GLUtesselator +{ + tess_contour *contours,*last_contour; + GLuint contour_cnt; + tess_callbacks callbacks; + tess_polygon *current_polygon; + GLenum error; + GLdouble A,B,C,D; + projection_type projection; +}; + + +extern void tess_call_user_error(GLUtriangulatorObj *,GLenum); + + +#endif |