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- /* $Id: tess.h,v 1.15.2.6 1999/12/05 17:01:17 gareth Exp $ */
-
- /*
- * Mesa 3-D graphics library
- * Version: 3.1
- *
- * Copyright (C) 1999 Brian Paul 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 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.
- */
-
- /*****************************************************************************
- *
- * GLU 1.3 Polygon Tessellation by Gareth Hughes <garethh@bell-labs.com>
- *
- *****************************************************************************/
-
- #ifndef __GLU_TESS_H__
- #define __GLU_TESS_H__
-
- #include <stdarg.h>
- #include <stdio.h>
-
- #include "gluP.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
-
- /*****************************************************************************
- * The GLUtesselator structure:
- *****************************************************************************/
- struct GLUtesselator
- {
- 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;
- };
-
-
- /*****************************************************************************
- * Common tessellation functions:
- *****************************************************************************/
- extern void tess_error_callback( GLUtesselator *, GLenum );
-
- 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 );
-
- extern void contour_dump( tess_contour_t *contour );
-
-
- /*****************************************************************************
- * Debugging output:
- *****************************************************************************/
- #ifdef DEBUG
- extern int tess_dbg_level;
-
- #define DBG_LEVEL_BASE 1
- #define DBG_LEVEL_VERBOSE 10
- #define DBG_LEVEL_ENTEREXIT 20
-
- #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__ */
-