From 0775483b7cd5357f5b272e8373a608bda6aea2bc Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Tue, 7 Feb 2012 11:21:11 +0000
Subject: [PATCH] From Lionel Lagarde, "The setNormal method of osg::Billboard
 has side effects (it calls updateCache and update the normal to Z rotation
 matrix). When cloning billboards, copying the normal vector is not enough. In
 the correction, the copy constructor calls setNormal to update the internal
 members."

---
 src/osg/Billboard.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/osg/Billboard.cpp b/src/osg/Billboard.cpp
index 44adabd7e..8bebadab3 100644
--- a/src/osg/Billboard.cpp
+++ b/src/osg/Billboard.cpp
@@ -35,7 +35,10 @@ Billboard::Billboard(const Billboard& billboard,const CopyOp& copyop):
         _normal(billboard._normal),
         _positionList(billboard._positionList),
         _cachedMode(billboard._cachedMode),
-        _side(billboard._side) {}
+        _side(billboard._side)
+{
+    setNormal(_normal);
+}
 
 Billboard::~Billboard()
 {