From 8614cc908731ca86271e81257099f6e96ddb7c1e Mon Sep 17 00:00:00 2001
From: Yury Melnichek <melnichek@gmail.com>
Date: Sat, 15 Jan 2011 23:49:10 +0200
Subject: [PATCH] Fix CrossProduct().

---
 geometry/point2d.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/geometry/point2d.hpp b/geometry/point2d.hpp
index 5b6f819879..6715c3d158 100644
--- a/geometry/point2d.hpp
+++ b/geometry/point2d.hpp
@@ -156,7 +156,7 @@ namespace m2
   template <typename T>
   T const CrossProduct(Point<T> const & a, Point<T> const & b)
   {
-    return a.y * b.x - a.x * b.y;
+    return a.x * b.y - a.y * b.x;
   }
 
   template <typename T>