From 1aecce2033db8fec5fe8c03ba826e9534499909c Mon Sep 17 00:00:00 2001
From: nicopietroni <nico.pietroni@isti.cnr.it>
Date: Wed, 3 Oct 2012 16:39:29 +0000
Subject: [PATCH] added IsCCW function

---
 vcg/space/triangle2.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/vcg/space/triangle2.h b/vcg/space/triangle2.h
index 95e936c7..f1da7768 100644
--- a/vcg/space/triangle2.h
+++ b/vcg/space/triangle2.h
@@ -133,6 +133,13 @@ void PointDistance(const CoordType & q,
 	}
 }
 
+///retutn true if the face is contuerclockwise oriented
+bool IsCCW()
+{
+    ScalarType Area=(P(1)-P(0))^(P(2)-P(0));
+    return (Area>0);
+}
+
 }; //end Class