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/* $Id: tess.h,v 1.13 1999/10/13 19:12:47 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_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;
GLboolean boundary_only;
GLenum winding_rule;
GLdouble tolerance;
tess_plane_t plane;
GLuint contour_count;
tess_contour_t *contours, *last_contour;
tess_contour_t *current_contour;
GLdouble mins[2], maxs[2];
GLuint vertex_count;
tess_vertex_t **sorted_vertices;
#if 0
tess_grid_t *grid; /* Not currently used... */
#endif
heap_t *ears;
hashtable_t *cvc_lists;
void *data;
GLboolean edge_flag;
GLuint label;
GLenum error;
};
/*****************************************************************************
* Tessellation error handler:
*****************************************************************************/
extern void tess_error_callback( GLUtesselator *, GLenum );
/*****************************************************************************
* Debugging output: (to be removed...)
*****************************************************************************/
#ifdef DEBUG
extern int tess_debug_level;
int vdebugstr( char *format_str, ... );
#pragma message( "tess: using DEBUGP for debugging output" )
#ifdef _WIN32
#define DEBUG_STREAM stdout
#else
#define DEBUG_STREAM stderr
#endif
#define DEBUGP( level, body ) \
do { \
if ( tess_debug_level >= level ) { \
vdebugstr( "%11.11s:%-5d ", __FILE__, __LINE__, level ); \
vdebugstr body; \
fflush( DEBUG_STREAM ); \
} \
} while ( 0 )
#define DEBUGIF( level ) do { if ( tess_debug_level >= level ) {
#define DEBUGENDIF } } while ( 0 )
#else
#define DEBUGP( level, body )
#define DEBUGIF( level ) while(0) {
#define DEBUGENDIF }
#endif
#ifdef __cplusplus
}
#endif
#endif /* __GLU_TESS_H__ */
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