Added RemoveLoadedProxyNodes pass to Optimizer, set on by default at present.

include/osg/NodeVisitor

@@ -20,24 +20,25 @@
 
 namespace osg {
 
-class Geode;
 class Billboard;
-class LightSource;
+class ClearNode;
 class ClipNode;
-class TexGenNode;
+class CoordinateSystemNode;
+class Geode;
 class Group;
-class Transform;
+class Impostor;
+class LightSource;
+class LOD;
 class MatrixTransform;
+class OccluderNode;
+class PagedLOD;
 class PositionAttitudeTransform;
 class Projection;
-class LOD;
-class PagedLOD;
-class Switch;
-class Impostor;
-class ClearNode;
-class OccluderNode;
+class ProxyNode;
 class Sequence;
-class CoordinateSystemNode;
+class Switch;
+class TexGenNode;
+class Transform;
 
 /** Visitor for type safe operations on osg::Nodes.
     Based on GOF's Visitor pattern. The NodeVisitor 
@@ -222,6 +223,8 @@ class OSG_EXPORT NodeVisitor : public virtual Referenced
         
         virtual void apply(Group& node)                     { apply((Node&)node); }
 
+        virtual void apply(ProxyNode& node)                 { apply((Group&)node); }
+
         virtual void apply(Projection& node)                { apply((Group&)node); }
 
         virtual void apply(CoordinateSystemNode& node)      { apply((Group&)node); }

include/osg/ProxyNode

@@ -61,19 +61,19 @@ class OSG_EXPORT ProxyNode : public Group
         /** Get how the center of object should be determined when computed which child is active.*/
         CenterMode getCenterMode() const { return _centerMode; }
 
-        /** Sets the object-space point which defines the center of the osg::LOD.  
-            center is affected by any transforms in the hierarchy above the osg::LOD.*/
+        /** Sets the object-space point which defines the center of the osg::ProxyNode.  
+            center is affected by any transforms in the hierarchy above the osg::ProxyNode.*/
         inline void setCenter(const Vec3& center) { _centerMode=USER_DEFINED_CENTER; _userDefinedCenter = center; }
         
-        /** return the LOD center point. */
+        /** return the ProxyNode center point. */
         inline const Vec3& getCenter() const { if (_centerMode==USER_DEFINED_CENTER) return _userDefinedCenter; else return getBound().center(); }
 
 
-        /** Set the object-space reference radius of the volume enclosed by the LOD. 
-          * Used to detmine the bounding sphere of the LOD in the absense of any children.*/
+        /** Set the object-space reference radius of the volume enclosed by the ProxyNode. 
+          * Used to detmine the bounding sphere of the ProxyNode in the absense of any children.*/
         inline void setRadius(float radius) { _radius = radius; }
         
-        /** Get the object-space radius of the volume enclosed by the LOD.*/
+        /** Get the object-space radius of the volume enclosed by the ProxyNode.*/
         inline float getRadius() const { return _radius; }
 
     protected :