X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fgeometry.h;h=410c7e05e501435098045ce154638876a3ee4316;hb=84afe881653a02a16b19d4da37435b8701b1a826;hp=6ff456410aa22ba01682128cd17a8392707c2a3b;hpb=921bf050ffe5fc81a9ab377e634180e659ee5d5d;p=architektonas

diff --git a/src/geometry.h b/src/geometry.h
index 6ff4564..410c7e0 100644
--- a/src/geometry.h
+++ b/src/geometry.h
@@ -3,6 +3,10 @@
 
 #include "vector.h"
 
+class Circle;
+class Dimension;
+class Line;
+
 class Geometry
 {
 	public:
@@ -11,6 +15,12 @@ class Geometry
 		static double ParameterOfLineAndPoint(Point, Point, Point);
 		static Point MirrorPointAroundLine(Point, Point, Point);
 		static Point RotatePointAroundPoint(Point, Point, double);
+		static double Determinant(Point, Point);
+		static int Intersects(Line *, Line *, double * tp = 0, double * up = 0);
+		static int Intersects(Line *, Dimension *, double * tp = 0, double * up = 0);
+		static int Intersects(Line * l, Circle * c, double * tp = 0, double * up = 0, double * vp = 0, double * wp = 0);
+		static int Intersects(Circle * c1, Circle * c2, double * tp = 0, double * up = 0, double * vp = 0, double * wp = 0, Point * p1 = 0, Point * p2 = 0);
+		static void FindAnglesForSides(double s1, double s2, double s3, double * a1, double * a2, double * a3);
 };
 
 #endif 	// __GEOMETRY_H__