diff --git a/experimental/Intersection/LineIntersection.h b/experimental/Intersection/LineIntersection.h
index c1246a5..dfae7ef 100644
--- a/experimental/Intersection/LineIntersection.h
+++ b/experimental/Intersection/LineIntersection.h
@@ -1,5 +1,6 @@
 
 #include "DataTypes.h"
 
-bool lineIntersect(const _Line& a, const _Line& b, _Point* result);
+int horizontalIntersect(const _Line& line, double y, double tRange[2]);
+int intersect(const _Line& a, const _Line& b, double aRange[2], double bRange[2]);
 bool testIntersect(const _Line& a, const _Line& b);