#include "../types.h"
//#define DEBUG
-#define CHECKS
+//#define CHECKS
+
+/* features */
#define SPLAY
+#define DONT_REMEMBER_CROSSINGS
typedef enum {DIR_UP, DIR_DOWN, DIR_UNKNOWN} segment_dir_t;
typedef enum {EVENT_CROSS, EVENT_END, EVENT_START, EVENT_HORIZONTAL} eventtype_t;
typedef enum {SLOPE_POSITIVE, SLOPE_NEGATIVE} slope_t;
+#define INVALID_COORD (0x7fffffff)
typedef struct _point {
int32_t x;
int32_t y;
} point_t;
+type_t point_type;
typedef struct _fillstyle {
- char is_filled;
+ void*internal;
} fillstyle_t;
typedef struct _windstate
typedef struct _gfxpolystroke {
segment_dir_t dir;
+ int points_size;
int num_points;
point_t*points;
fillstyle_t*fs;
gfxpolystroke_t*stroke;
int stroke_pos;
+#ifndef DONT_REMEMBER_CROSSINGS
dict_t scheduled_crossings;
+#endif
} segment_t;
#define LINE_EQ(p,s) ((double)(s)->delta.y*(p).x - (double)(s)->delta.x*(p).y - (s)->k)
void gfxpoly_fail(char*expr, char*file, int line, const char*function);
char gfxpoly_check(gfxpoly_t*poly);
+int gfxpoly_num_segments(gfxpoly_t*poly);
int gfxpoly_size(gfxpoly_t*poly);
void gfxpoly_dump(gfxpoly_t*poly);
void gfxpoly_save(gfxpoly_t*poly, const char*filename);
-gfxpoly_t* gfxpoly_process(gfxpoly_t*poly, windrule_t*windrule, windcontext_t*context);
+gfxpoly_t* gfxpoly_process(gfxpoly_t*poly1, gfxpoly_t*poly2, windrule_t*windrule, windcontext_t*context);
+
+gfxpoly_t* gfxpoly_intersect(gfxpoly_t*p1, gfxpoly_t*p2);
+gfxpoly_t* gfxpoly_union(gfxpoly_t*p1, gfxpoly_t*p2);
#ifndef CHECKS
#ifdef assert