1 files changed, 11 insertions, 7 deletions
diff --git a/geometry.h b/geometry.h
index c936e59..470e8e9 100644
--- a/geometry.h
+++ b/geometry.h
@@ -2,6 +2,8 @@
 #define GEOMETRY_H_
 
 
+#include <glib.h>
+
 #define EDGE_NONE        0
 #define EDGE_LEFT   (1<<0)
 #define EDGE_RIGHT  (1<<1)
@@ -9,13 +11,14 @@
 #define EDGE_BOTTOM (1<<3)
 #define EDGE_ALL    (EDGE_LEFT|EDGE_RIGHT|EDGE_TOP|EDGE_BOTTOM)
 
-#define INTERSECTION_ERROR          -1
-#define INTERSECTION_NONE            0
-#define INTERSECTION_IDENTICAL       1
-#define INTERSECTION_LINE_LINE       2
-#define INTERSECTION_LINE_SEGMENT    3
-#define INTERSECTION_SEGMENT_LINE    4
-#define INTERSECTION_SEGMENT_SEGMENT 5
+#define INTERSECTION_ERROR           -1
+#define INTERSECTION_NONE             0
+#define INTERSECTION_IDENTICAL        1
+#define INTERSECTION_LINE             2
+#define INTERSECTION_LINE_LINE        2
+#define INTERSECTION_LINE_SEGMENT     3
+#define INTERSECTION_SEGMENT_LINE     6
+#define INTERSECTION_SEGMENT_SEGMENT  7
 
 
 typedef struct _VERTEX {
@@ -42,6 +45,7 @@ void deleteVertex(VERTEX_LIST *list, unsigned int n);
 
 
 int vertexInRect(const VERTEX *v, const RECTANGLE *rect);
+gboolean vertexInPolygon(const VERTEX *v, const POLYGON *p);
 int lineIntersection(const LINE *la, const LINE *lb, VERTEX *v);
 int lineRectIntersection(const LINE *l, const RECTANGLE *rect, int edge, VERTEX *v);
 int lineRectIntersections(const LINE *line, const RECTANGLE *rect, int edge, VERTEX *v1, VERTEX *v2);