From aef81ae00db5c8d25dde33d0367802457dd8a4f1 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Mon, 19 Dec 2005 15:05:26 +0000
Subject: [PATCH] Added check against the validity of the _inverse matrix
 pointer.

---
 src/osgUtil/IntersectVisitor.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/osgUtil/IntersectVisitor.cpp b/src/osgUtil/IntersectVisitor.cpp
index 2b7d5ae8b..a3dbf251e 100644
--- a/src/osgUtil/IntersectVisitor.cpp
+++ b/src/osgUtil/IntersectVisitor.cpp
@@ -211,7 +211,7 @@ bool IntersectVisitor::hits()
 osg::Vec3 IntersectVisitor::getEyePoint() const
 {
     const IntersectState* cis = _intersectStateStack.empty() ? 0 : _intersectStateStack.back().get();
-    if (cis)
+    if (cis && cis->_inverse.valid())
     {
         //osg::notify(osg::NOTICE)<<"IntersectVisitor::getEyePoint()"<<_pseudoEyePoint * (*(cis->_inverse))<<std::endl;
         return _pseudoEyePoint * (*(cis->_inverse));