#ifndef __geom_h
#define __geom_h
+#include <glib.h>
+
+typedef struct _GravityCoord {
+ gint pos;
+ gint denom;
+ gboolean center;
+ gboolean opposite;
+} GravityCoord;
+
+typedef struct _GravityPoint {
+ GravityCoord x;
+ GravityCoord y;
+} GravityPoint;
+
+#define GRAVITY_COORD_SET(c, p, cen, opp) \
+ (c).pos = (p), (c).center = (cen), (c).opposite = (opp)
+
+
typedef struct _Point {
int x;
int y;
(s1).bottom_start == (s2).bottom_start && \
(s1).bottom_end == (s2).bottom_end)
-#define RANGE_INTERSECT(r1x, r1w, r2x, r2w) \
- (r1x < r2x + r2w && r1x + r1w > r2x)
+#define RANGES_INTERSECT(r1x, r1w, r2x, r2w) \
+ (r1w && r2w && r1x < r2x + r2w && r1x + r1w > r2x)
#endif