src/glu/mesa/tess.h

   1 /* $Id: tess.h,v 1.6 1999/09/15 02:12:16 gareth Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.1
   6  *
   7  * Copyright (C) 1999  Brian Paul   All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27 /*
  28  * $Log: tess.h,v $
  29  * Revision 1.6  1999/09/15 02:12:16  gareth
  30  * Added debugging pragma message.
  31  *
  32  * Revision 1.5  1999/09/14 22:46:02  gareth
  33  * Added debugging output.
  34  *
  35  * Revision 1.4  1999/09/13 22:20:13  gareth
  36  * Fixed file headers.  Tracking down macro bugs.
  37  *
  38  */
  39
  40 /*****************************************************************************
  41  *
  42  * GLU 1.3 Polygon Tessellation by Gareth Hughes <garethh@lucent.com>
  43  *
  44  *****************************************************************************/
  45
  46 #ifndef __GLU_TESS_H__
  47 #define __GLU_TESS_H__
  48
  49 #include <stdarg.h>
  50 #include <stdio.h>
  51
  52 #include "gluP.h"
  53
  54 #include "tess_typedefs.h"
  55 #include "tess_heap.h"
  56 #if 0
  57 #include "tess_grid.h"
  58 #endif
  59
  60 #ifdef __cplusplus
  61 extern "C" {
  62 #endif
  63
  64 /*****************************************************************************
  65  * The GLUtesselator structure:
  66  *****************************************************************************/
  67 struct GLUtesselator
  68 {
  69     tess_callbacks_t    callbacks;
  70     GLboolean           boundary_only;
  71     GLenum              winding_rule;
  72     GLdouble            tolerance;
  73     tess_plane_t        plane;
  74     GLuint              contour_count;
  75     tess_contour_t      *contours, *last_contour;
  76     tess_contour_t      *current_contour;
  77     GLdouble            mins[2], maxs[2];
  78     GLuint              vertex_count;
  79     tess_vertex_t       **sorted_vertices;
  80 #if 0
  81     tess_grid_t         *grid;                  /* Not currently used... */
  82 #endif
  83     heap_t              *heap;
  84     GLenum              error;
  85 };
  86
  87
  88 /*****************************************************************************
  89  * Tessellation error handler:
  90  *****************************************************************************/
  91 extern void tess_error_callback( GLUtesselator *, GLenum, void * );
  92
  93
  94 /*****************************************************************************
  95  * Debugging output:  (to be removed...)
  96  *****************************************************************************/
  97 #ifdef DEBUG
  98 extern  int     tess_debug_level;
  99 int vdebugstr( char *format_str, ... );
 100
 101 #pragma message( "tess: using DEBUGP for debugging output" )
 102 #define DEBUGP(level, body)                                             \
 103     do {                                                                \
 104         if ( tess_debug_level >= level ) {                              \
 105             vdebugstr( "%11.11s:%-5d ", __FILE__, __LINE__, level );    \
 106             vdebugstr body;                                             \
 107             fflush( stderr );                                           \
 108         }                                                               \
 109     } while ( 0 )
 110 #define DEBUGIF(level)          do { if ( tess_debug_level >= level ) {
 111 #define DEBUGENDIF              } } while ( 0 )
 112 #else
 113 #define DEBUGP(level, body)
 114 #define DEBUGIF(level)          while(0) {
 115 #define DEBUGENDIF              }
 116 #endif
 117
 118 #ifdef __cplusplus
 119 }
 120 #endif
 121
 122 #endif /* __GLU_TESS_H__ */