SWORD25: Merged all art* code and cleaned it up

svn-id: r53384

1 files changed, 102 insertions, 2 deletions

diff --git a/engines/sword25/gfx/image/art.h b/engines/sword25/gfx/image/art.h
index 5888814e77..f0d0d7cacc 100644
--- a/engines/sword25/gfx/image/art.h
+++ b/engines/sword25/gfx/image/art.h
@@ -86,8 +86,6 @@ art_die(const char *fmt, ...) ART_GNUC_PRINTF(1, 2);
 void
 art_warn(const char *fmt, ...) ART_GNUC_PRINTF(1, 2);
 
-#define ART_USE_NEW_INTERSECTOR
-
 typedef struct _ArtDRect ArtDRect;
 typedef struct _ArtIRect ArtIRect;
 
@@ -173,4 +171,106 @@ art_vpath_add_point(ArtVpath **p_vpath, int *pn_points, int *pn_points_max,
 
 ArtVpath *art_bez_path_to_vec(const ArtBpath *bez, double flatness);
 
+/* The funky new SVP intersector. */
+
+#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);
+
+
+/* Sort vector paths into sorted vector paths. */
+
+ArtSVP *
+art_svp_from_vpath(ArtVpath *vpath);
+
+/* Sort vector paths into sorted vector paths. */
+
+typedef enum {
+	ART_PATH_STROKE_JOIN_MITER,
+	ART_PATH_STROKE_JOIN_ROUND,
+	ART_PATH_STROKE_JOIN_BEVEL
+} ArtPathStrokeJoinType;
+
+typedef enum {
+	ART_PATH_STROKE_CAP_BUTT,
+	ART_PATH_STROKE_CAP_ROUND,
+	ART_PATH_STROKE_CAP_SQUARE
+} ArtPathStrokeCapType;
+
+ArtSVP *
+art_svp_vpath_stroke(ArtVpath *vpath,
+                     ArtPathStrokeJoinType join,
+                     ArtPathStrokeCapType cap,
+                     double line_width,
+                     double miter_limit,
+                     double flatness);
+
+/* This version may have winding numbers exceeding 1. */
+ArtVpath *
+art_svp_vpath_stroke_raw(ArtVpath *vpath,
+                         ArtPathStrokeJoinType join,
+                         ArtPathStrokeCapType cap,
+                         double line_width,
+                         double miter_limit,
+                         double flatness);
+
+
+/* The spiffy antialiased renderer for sorted vector paths. */
+
+typedef struct _ArtSVPRenderAAStep ArtSVPRenderAAStep;
+typedef struct _ArtSVPRenderAAIter ArtSVPRenderAAIter;
+
+struct _ArtSVPRenderAAStep {
+	int x;
+	int delta; /* stored with 16 fractional bits */
+};
+
+ArtSVPRenderAAIter *
+art_svp_render_aa_iter(const ArtSVP *svp,
+                       int x0, int y0, int x1, int y1);
+
+void
+art_svp_render_aa_iter_step(ArtSVPRenderAAIter *iter, int *p_start,
+                            ArtSVPRenderAAStep **p_steps, int *p_n_steps);
+
+void
+art_svp_render_aa_iter_done(ArtSVPRenderAAIter *iter);
+
+void
+art_svp_render_aa(const ArtSVP *svp,
+                  int x0, int y0, int x1, int y1,
+                  void (*callback)(void *callback_data,
+                                   int y,
+                                   int start,
+                                   ArtSVPRenderAAStep *steps, int n_steps),
+                  void *callback_data);
+
+
 #endif /* __ART_MISC_H__ */