From 1a10795198f4377d761639e3a7f8b9ab88a50082 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Thu, 30 Jun 2016 08:16:29 +0100
Subject: [PATCH] Added handling of possible zero divisor

---
 src/osgPlugins/bsp/VBSPGeometry.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/osgPlugins/bsp/VBSPGeometry.cpp b/src/osgPlugins/bsp/VBSPGeometry.cpp
index 08e7e8b88..52fa073e3 100644
--- a/src/osgPlugins/bsp/VBSPGeometry.cpp
+++ b/src/osgPlugins/bsp/VBSPGeometry.cpp
@@ -236,7 +236,7 @@ osg::Vec3 VBSPGeometry::getNormalFromEdges(int row, int col,
 
     // Scale the final normal according to how many triangle normals are
     // contributing
-    finalNormal *= (1.0f / (float)normalCount);
+    if (normalCount>0) finalNormal *= (1.0f / (float)normalCount);
 
     return finalNormal;
 }