diff -r 36eb4b8f409e -r 988f1908a7c4 geometry.cpp
--- a/geometry.cpp	Thu Feb 25 11:03:52 2010 +0000
+++ b/geometry.cpp	Fri Jul 23 16:43:49 2010 +0000
@@ -65,10 +65,18 @@
 {
 }
 
+//! Check if length is 0
+bool Vector::isNull()
+{
+	if (x()==0 && y()==0)
+		return true;
+	return false;	
+}
+
 //! Normalize vector
 void Vector::normalize ()
 {
-	if (x()==0 && y()==0) return;
+	if (isNull() ) return;
 	qreal l=sqrt ( x()*x() + y()*y() );
 	setX (x()/l);
 	setY (y()/l);