Index: trunk/MagicSoft/Mars/mimage/MHillas.cc
===================================================================
--- trunk/MagicSoft/Mars/mimage/MHillas.cc	(revision 7208)
+++ trunk/MagicSoft/Mars/mimage/MHillas.cc	(revision 7224)
@@ -118,4 +118,14 @@
 // --------------------------------------------------------------------------
 //
+//  return the direction of the main axis (normalized). The main axis
+//  always has the direction  -->  x>0
+//
+TVector2 MHillas::GetNormAxis() const
+{
+    return TVector2(fCosDelta, fSinDelta);
+}
+
+// --------------------------------------------------------------------------
+//
 //  Analytical estimation of length of border line:
 //    U = pi*(a+b - sqrt(a*b))
Index: trunk/MagicSoft/Mars/mimage/MHillas.h
===================================================================
--- trunk/MagicSoft/Mars/mimage/MHillas.h	(revision 7208)
+++ trunk/MagicSoft/Mars/mimage/MHillas.h	(revision 7224)
@@ -46,4 +46,5 @@
 
     TVector2 GetMean() const;
+    TVector2 GetNormAxis() const;
 
     Double_t GetBorderLine() const;