#include "../q.h"
//#define DEBUG
-//#define CHECKS
+#define CHECKS
#define SPLAY
-typedef enum {DIR_UP, DIR_DOWN} segment_dir_t;
+typedef enum {DIR_UP, DIR_DOWN, DIR_UNKNOWN} segment_dir_t;
typedef enum {EVENT_CROSS, EVENT_END, EVENT_CORNER, EVENT_START, EVENT_HORIZONTAL} eventtype_t;
typedef enum {SLOPE_POSITIVE, SLOPE_NEGATIVE} slope_t;
point_t a;
point_t b;
fillstyle_t*style;
+#ifdef DEBUG
int tmp;
+#endif
struct _edge *next;
} edge_t;
{
char is_filled;
int wind_nr;
- int num_polygons;
} windstate_t;
+/* TODO: maybe we should merge windcontext and windrule */
+typedef struct _windcontext
+{
+ int num_polygons;
+} windcontext_t;
+
typedef struct _windrule
{
- windstate_t (*start)(int num_polygons);
- windstate_t (*add)(windstate_t left, fillstyle_t*edge, segment_dir_t dir, int polygon_nr);
+ windstate_t (*start)(windcontext_t* num_polygons);
+ windstate_t (*add)(windcontext_t*context, windstate_t left, fillstyle_t*edge, segment_dir_t dir, int polygon_nr);
fillstyle_t* (*diff)(windstate_t*left, windstate_t*right);
} windrule_t;
+#define SEGNR(s) ((s)?(s)->nr:-1)
+
typedef struct _segment {
point_t a;
point_t b;
point_t delta;
double k; //k = a.x*b.y-a.y*b.x = delta.y*a.x - delta.x*a.y (=0 for points on the segment)
- int minx, maxx;
+ int32_t minx, maxx;
segment_dir_t dir;
fillstyle_t*fs;
fillstyle_t*fs_out;
+#ifdef CHECKS
char fs_out_ok;
+#endif
int polygon_nr;
windstate_t wind;
edge_t*edges;
} gfxpoly_t;
+typedef struct _gfxstroke {
+ segment_dir_t dir;
+ int num_points;
+ point_t*points;
+ fillstyle_t*fs;
+} gfxstroke_t;
+typedef struct _gfxcompactpoly {
+ double gridsize;
+ int num_strokes;
+ gfxstroke_t*strokes;
+} gfxcompactpoly_t;
+
void gfxpoly_fail(char*expr, char*file, int line, const char*function);
gfxpoly_t* gfxpoly_new(double gridsize);
int gfxpoly_size(gfxpoly_t*poly);
void gfxpoly_dump(gfxpoly_t*poly);
gfxpoly_t* gfxpoly_save(gfxpoly_t*poly, const char*filename);
-gfxpoly_t* gfxpoly_process(gfxpoly_t*poly, windrule_t*windrule);
+gfxpoly_t* gfxpoly_process(gfxpoly_t*poly, windrule_t*windrule, windcontext_t*context);
typedef struct _event {
eventtype_t type;