From dc77fbd3840c01dc0f4e6f147b0decc686dc6ac8 Mon Sep 17 00:00:00 2001
From: Max Lyon <lyon@cs.rwth-aachen.de>
Date: Tue, 8 Aug 2017 14:14:30 +0200
Subject: [PATCH] only compute normals for faces that are not deleted

---
 src/OpenMesh/Core/Mesh/PolyMeshT.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/OpenMesh/Core/Mesh/PolyMeshT.cc b/src/OpenMesh/Core/Mesh/PolyMeshT.cc
index e77c0ba8..827306dc 100644
--- a/src/OpenMesh/Core/Mesh/PolyMeshT.cc
+++ b/src/OpenMesh/Core/Mesh/PolyMeshT.cc
@@ -261,7 +261,7 @@ void
 PolyMeshT<Kernel>::
 update_face_normals()
 {
-  FaceIter f_it(Kernel::faces_begin()), f_end(Kernel::faces_end());
+  FaceIter f_it(Kernel::faces_sbegin()), f_end(Kernel::faces_end());
 
   for (; f_it != f_end; ++f_it)
     this->set_normal(*f_it, calc_face_normal(*f_it));