From c210dd2db92260ab61d4aab1cde6f70fdd24a523 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Sat, 23 Jul 2005 19:05:42 +0000
Subject: [PATCH] Added osg::CameraNode to ImpostorSprite in prep for moving
 across to using camera node in pre rendering of impostors.

---
 include/osgSim/Impostor       |  1 -
 include/osgSim/ImpostorSprite | 13 +++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/include/osgSim/Impostor b/include/osgSim/Impostor
index c3094f0c8..052f96c5f 100644
--- a/include/osgSim/Impostor
+++ b/include/osgSim/Impostor
@@ -112,7 +112,6 @@ class OSGSIM_EXPORT Impostor : public osg::LOD
         
         ImpostorSprite* createImpostorSprite(osgUtil::CullVisitor* cv);
 
-
         float _impostorThreshold;
 
 };
diff --git a/include/osgSim/ImpostorSprite b/include/osgSim/ImpostorSprite
index 91e97ff87..08185d9f6 100644
--- a/include/osgSim/ImpostorSprite
+++ b/include/osgSim/ImpostorSprite
@@ -20,6 +20,7 @@
 #include <osg/AlphaFunc>
 #include <osg/TexEnv>
 #include <osg/Texture2D>
+#include <osg/CameraNode>
 
 #include <osgSim/Export>
 
@@ -149,6 +150,15 @@ class OSGSIM_EXPORT ImpostorSprite : public osg::Drawable
         osg::Vec4 _color;
 
         virtual osg::BoundingBox computeBound() const;
+        
+        /** Set the camera node to use for pre rendering the impostor sprite's texture.*/
+        void setCameraNode(osg::CameraNode* camera) { _camera = camera; }
+
+        /** Get the camera node to use for pre rendering the impostor sprite's texture.*/
+        osg::CameraNode* getCameraNode() { return _camera.get(); }
+
+        /** Get the const camera node to use for pre rendering the impostor sprite's texture.*/
+        const osg::CameraNode* getCameraNode() const { return _camera.get(); }
 
     protected:
 
@@ -160,6 +170,9 @@ class OSGSIM_EXPORT ImpostorSprite : public osg::Drawable
         Impostor* _parent;
 
         friend class osgSim::ImpostorSpriteManager;
+        
+        // camera node for doing the pre rendering.
+        osg::ref_ptr<osg::CameraNode> _camera;
 
         // support for a double linked list managed by the
         // ImposotorSpriteManager.