diff options
Diffstat (limited to 'src/glu/mesa/tess.h')
| -rw-r--r-- | src/glu/mesa/tess.h | 189 |
1 files changed, 83 insertions, 106 deletions
diff --git a/src/glu/mesa/tess.h b/src/glu/mesa/tess.h index 55681830735..ddb9b30cb20 100644 --- a/src/glu/mesa/tess.h +++ b/src/glu/mesa/tess.h @@ -1,131 +1,108 @@ -/* $Id: tess.h,v 1.16 1999/12/06 09:39:34 gareth Exp $ */ +/* $Id: tess.h,v 1.17 2000/07/11 14:11:04 brianp Exp $ */ /* * Mesa 3-D graphics library - * Version: 3.1 + * Version: 3.3 + * Copyright (C) 1995-2000 Brian Paul * - * Copyright (C) 1999 Brian Paul All Rights Reserved. + * 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. * - * 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: + * 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. * - * The above copyright notice and this permission notice 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 - * BRIAN PAUL 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. + * 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. */ -/***************************************************************************** - * - * GLU 1.3 Polygon Tessellation by Gareth Hughes <[email protected]> - * - *****************************************************************************/ -#ifndef __GLU_TESS_H__ -#define __GLU_TESS_H__ +/* + * This file is part of the polygon tesselation code contributed by + * Bogdan Sikorski + */ -#include <stdarg.h> -#include <stdio.h> -#include "gluP.h" +#ifndef TESS_H +#define TESS_H -#include "tess_typedefs.h" -#include "tess_macros.h" -#include "tess_hash.h" -#include "tess_heap.h" -#if 0 -#include "tess_grid.h" -#endif -#ifdef __cplusplus -extern "C" { -#endif +#include "gluP.h" + +#define EPSILON 1e-06 /* epsilon for double precision compares */ -/***************************************************************************** - * The GLUtesselator structure: - *****************************************************************************/ -struct GLUtesselator +typedef enum { - tess_callbacks_t callbacks; - GLenum winding_rule; - GLboolean boundary_only; - GLdouble tolerance; - GLenum orientation; - void *data; - GLint num_contours; - tess_contour_t *contours, *last_contour; - tess_contour_t *current_contour; - GLdouble mins[2], maxs[2]; - GLint num_vertices; - tess_vertex_t **sorted_vertices; -#if 0 - tess_grid_t *grid; /* Not currently used... */ -#endif - heap_t *ears; - GLboolean edge_flag; - GLuint label; - tess_plane_t plane; - GLenum error; -}; + 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; -/***************************************************************************** - * Common tessellation functions: - *****************************************************************************/ -extern void tess_error_callback( GLUtesselator *, GLenum ); +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; -extern GLdouble twice_contour_area( tess_contour_t *contour ); -extern void reverse_contour( tess_contour_t *contour ); -extern void delete_contour( tess_contour_t **contour ); +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; -extern void contour_dump( tess_contour_t *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 GLUtriangulatorObj +{ + 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; +}; -/***************************************************************************** - * Debugging output: - *****************************************************************************/ -#ifdef DEBUG -extern int tess_dbg_level; -#define DBG_LEVEL_BASE 1 -#define DBG_LEVEL_VERBOSE 10 -#define DBG_LEVEL_ENTEREXIT 20 +extern void tess_call_user_error(GLUtriangulatorObj *, GLenum); +extern void tess_test_polygon(GLUtriangulatorObj *); +extern void tess_find_contour_hierarchies(GLUtriangulatorObj *); +extern void tess_handle_holes(GLUtriangulatorObj *); +extern void tess_tesselate(GLUtriangulatorObj *); +extern void tess_tesselate_with_edge_flag(GLUtriangulatorObj *); -#ifdef _WIN32 -#define DBG_STREAM stdout -#else -#define DBG_STREAM stderr -#endif -#ifdef __GNUC__ -#define MSG( level, format, args... ) \ - if ( level <= tess_dbg_level ) { \ - fprintf( DBG_STREAM, "%9.9s:%d:\t ", __FILE__, __LINE__ ); \ - fprintf( DBG_STREAM, format, ## args ); \ - fflush( DBG_STREAM ); \ - } -#else -#define MSG tess_msg -#endif /* __GNUC__ */ - -#else -#define MSG tess_msg -#endif /* DEBUG */ - -extern INLINE void tess_msg( GLint level, char *format, ... ); -extern INLINE void tess_info( char *file, GLint line ); - -#ifdef __cplusplus -} #endif - -#endif /* __GLU_TESS_H__ */ |