libart 2.3.16

[swftools.git] / lib / art / art_svp_intersect.h

diff --git a/lib/art/art_svp_intersect.h b/lib/art/art_svp_intersect.h
new file mode 100644 (file)
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+++ b/lib/art/art_svp_intersect.h
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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. */
+
+#ifdef LIBART_COMPILATION
+#include "art_svp.h"
+#else
+#include "art_svp.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#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);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __ART_SVP_INTERSECT_H__ */