Added txp::TerrapageNode to the txp plugin, and implemented the node so that it

automatically assign handles the updates of eye points and database merges.

include/osg/NodeVisitor

@@ -189,6 +189,10 @@ class SG_EXPORT NodeVisitor : public Referenced
         /** Get the World To Local Matrix from the NodePath for specified Transform::Mode.*/
         virtual bool getWorldToLocalMatrix(Matrix& matrix, Node* node);
 
+        /** Get the eye point in local coordinates.
+          * Note, not all NodeVisitor implement this method, it is mainly cull visitors which will implement.*/
+        virtual osg::Vec3 getEyePoint() const { return Vec3(0.0f,0.0f,0.0f); }
+
         /** Get the distance from a point to the eye point, distance value in local coordinate system.
           * Note, not all NodeVisitor implement this method, it is mainly cull visitors which will implement.
           * If the getDistianceFromEyePoint(pos) is not implmented than a default value of 0.0 is returned.*/

include/osgTXP/TrPageParser.h

@@ -166,5 +166,5 @@ namespace txp
         TrPageParser*parse;
     };
     
-}; // namespace txp
+} // namespace txp
 #endif

include/osgTXP/trPagePageManager.h

@@ -34,6 +34,7 @@
 #include <osgTXP/trpage_scene.h>
 #include <osgTXP/trpage_managers.h>
 #include <osgTXP/WaitBlock.h>
+#include <osgTXP/TrPageArchive.h>
 
 namespace txp
 {

include/osgUtil/CullVisitor

@@ -48,6 +48,7 @@ class OSGUTIL_EXPORT CullVisitor : public osg::NodeVisitor, public osg::CullStac
 
         virtual void reset();
         
+        virtual osg::Vec3 getEyePoint() const { return getEyeLocal(); }
         virtual float getDistanceToEyePoint(const osg::Vec3& pos, bool withLODScale) const;
         virtual float getDistanceFromEyePoint(const osg::Vec3& pos, bool withLODScale) const;