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/* Libart_LGPL - library of basic graphic primitives
* Copyright (C) 2001 Raph Levien
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __ART_SVP_INTERSECT_H__
#define __ART_SVP_INTERSECT_H__
/* The funky new SVP intersector. */
#include "art.h"
#ifndef ART_WIND_RULE_DEFINED
#define ART_WIND_RULE_DEFINED
typedef enum {
ART_WIND_RULE_NONZERO,
ART_WIND_RULE_INTERSECT,
ART_WIND_RULE_ODDEVEN,
ART_WIND_RULE_POSITIVE
} ArtWindRule;
#endif
typedef struct _ArtSvpWriter ArtSvpWriter;
struct _ArtSvpWriter {
int (*add_segment)(ArtSvpWriter *self, int wind_left, int delta_wind,
double x, double y);
void (*add_point)(ArtSvpWriter *self, int seg_id, double x, double y);
void (*close_segment)(ArtSvpWriter *self, int seg_id);
};
ArtSvpWriter *
art_svp_writer_rewind_new(ArtWindRule rule);
ArtSVP *
art_svp_writer_rewind_reap(ArtSvpWriter *self);
int
art_svp_seg_compare(const void *s1, const void *s2);
void
art_svp_intersector(const ArtSVP *in, ArtSvpWriter *out);
#endif /* __ART_SVP_INTERSECT_H__ */
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