1 /* Libart_LGPL - library of basic graphic primitives
2 * Copyright (C) 2001 Raph Levien
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.
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.
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.
20 #ifndef __ART_SVP_INTERSECT_H__
21 #define __ART_SVP_INTERSECT_H__
23 /* The funky new SVP intersector. */
25 #ifdef LIBART_COMPILATION
33 #endif /* __cplusplus */
35 #ifndef ART_WIND_RULE_DEFINED
36 #define ART_WIND_RULE_DEFINED
38 ART_WIND_RULE_NONZERO,
39 ART_WIND_RULE_INTERSECT,
40 ART_WIND_RULE_ODDEVEN,
41 ART_WIND_RULE_POSITIVE
45 typedef struct _ArtSvpWriter ArtSvpWriter;
47 struct _ArtSvpWriter {
48 int (*add_segment) (ArtSvpWriter *self, int wind_left, int delta_wind,
50 void (*add_point) (ArtSvpWriter *self, int seg_id, double x, double y);
51 void (*close_segment) (ArtSvpWriter *self, int seg_id);
55 art_svp_writer_rewind_new (ArtWindRule rule);
58 art_svp_writer_rewind_reap (ArtSvpWriter *self);
61 art_svp_seg_compare (const void *s1, const void *s2);
64 art_svp_intersector (const ArtSVP *in, ArtSvpWriter *out);
68 #endif /* __cplusplus */
70 #endif /* __ART_SVP_INTERSECT_H__ */