lib/art/art_svp_wind.h

   1 /* Libart_LGPL - library of basic graphic primitives
   2  * Copyright (C) 1998 Raph Levien
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifndef __ART_SVP_WIND_H__
  21 #define __ART_SVP_WIND_H__
  22
  23 /* Primitive intersection and winding number operations on sorted
  24    vector paths. */
  25
  26 #ifdef LIBART_COMPILATION
  27 #include "art_svp.h"
  28 #else
  29 #include "art_svp.h"
  30 #endif
  31
  32 #ifdef __cplusplus
  33 extern "C" {
  34 #endif /* __cplusplus */
  35
  36 #ifndef ART_WIND_RULE_DEFINED
  37 #define ART_WIND_RULE_DEFINED
  38 typedef enum {
  39   ART_WIND_RULE_NONZERO,
  40   ART_WIND_RULE_INTERSECT,
  41   ART_WIND_RULE_ODDEVEN,
  42   ART_WIND_RULE_POSITIVE
  43 } ArtWindRule;
  44 #endif
  45
  46 ArtSVP *
  47 art_svp_uncross (ArtSVP *vp);
  48
  49 ArtSVP *
  50 art_svp_rewind_uncrossed (ArtSVP *vp, ArtWindRule rule);
  51
  52
  53 #ifdef __cplusplus
  54 }
  55 #endif /* __cplusplus */
  56
  57 #endif /* __ART_SVP_WIND_H__ */