From 1111b67e7e3328e95ce35cb5323385bff51220e5 Mon Sep 17 00:00:00 2001
From: ponchio <federico.ponchio@isti.cnr.it>
Date: Thu, 29 Apr 2010 16:54:10 +0000
Subject: [PATCH] fixed resolution

---
 wrap/gui/frustum.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/wrap/gui/frustum.h b/wrap/gui/frustum.h
index 2e0d0cc7..e0627879 100644
--- a/wrap/gui/frustum.h
+++ b/wrap/gui/frustum.h
@@ -181,8 +181,8 @@ template <class T> void Frustum<T>::UpdateView() {
   planes[5].Init(SW, SE, NE);   
 
   //compute resolution: sizeo of a pixel unitary distance from view_point
-  resolution = ((ne + NE) - (nw + NW)).Norm() /
-               (View<T>::viewport[2] * ((ne + NE) - view_point).Norm());
+  resolution = ((ne + NE)/2 - (nw + NW)/2).Norm() /
+               (View<T>::viewport[2] * ((ne + NE + nw + NW)/4 - view_point).Norm());
 }
 
 }//namespace