diff -r 0fad394bc330 -r 31841b366d5e geometry.cpp
--- a/geometry.cpp	Wed Mar 10 15:36:19 2010 +0000
+++ b/geometry.cpp	Mon Mar 15 11:49:42 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);