From ce65ad05d18ed9356daf96f68b82f42b17bcc241 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 20 Sep 2006 13:40:58 +0000
Subject: [PATCH] Added use of ClusterCullingCallback

---
 examples/osgfadetext/osgfadetext.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/examples/osgfadetext/osgfadetext.cpp b/examples/osgfadetext/osgfadetext.cpp
index cd32f3259..b5687bcf7 100644
--- a/examples/osgfadetext/osgfadetext.cpp
+++ b/examples/osgfadetext/osgfadetext.cpp
@@ -7,6 +7,7 @@
 #include <osg/PositionAttitudeTransform>
 #include <osg/MatrixTransform>
 #include <osg/CoordinateSystemNode>
+#include <osg/ClusterCullingCallback>
 
 #include <osgDB/FileUtils>
 #include <osgDB/ReadFile>
@@ -96,7 +97,11 @@ osgText::Text* createText(osg::EllipsoidModel* ellipsoid, double latitude, doubl
     double X,Y,Z;
     ellipsoid->convertLatLongHeightToXYZ( osg::DegreesToRadians(latitude), osg::DegreesToRadians(longitude), height, X, Y, Z);
 
-    osgText::FadeText* text = new osgText::FadeText;
+
+    osgText::Text* text = new osgText::FadeText;
+
+    osg::Vec3 normal = ellipsoid->computeLocalUpVector( X, Y, Z);
+    text->setCullCallback(new osg::ClusterCullingCallback(osg::Vec3(X,Y,Z), normal, 0.0));
 
     text->setText(str);
     text->setFont("fonts/arial.ttf");