Added new Node/Drawable::s/getInitialBound and Node/Drawable::s/getComputeBoundCallback

methods and reimplement computeBound so that it passes back a bounding volume rather
than modifying the local one.

include/osgParticle/ParticleProcessor

@@ -131,12 +131,12 @@ namespace osgParticle
         /// Transform a vector from world to local coordinates, discarding translation (valid only during cull traversal).
         inline osg::Vec3 rotateWorldToLocal(const osg::Vec3& P);
 
+        virtual osg::BoundingSphere computeBound() const;    
+
     protected:
         virtual ~ParticleProcessor() {}
         ParticleProcessor& operator=(const ParticleProcessor&) { return *this; }
         
-        inline bool computeBound() const;    
-        
         virtual void process(double dt) = 0;
         
     private:
@@ -249,13 +249,6 @@ namespace osgParticle
         return _resetTime;
     }
 
-    inline bool ParticleProcessor::computeBound() const
-    {
-        _bsphere.init();
-        _bsphere_computed = true;
-        return true;
-    }
-    
     inline const osg::Matrix& ParticleProcessor::getLocalToWorldMatrix()    
     {
         if (_need_ltw_matrix) {

include/osgParticle/ParticleSystem

@@ -159,13 +159,14 @@ namespace osgParticle
 
         virtual void drawImplementation(osg::State& state) const;
 
+        virtual osg::BoundingBox computeBound() const;
+
     protected:
 
         virtual ~ParticleSystem();
 
         ParticleSystem& operator=(const ParticleSystem&) { return *this; }
 
-        inline virtual bool computeBound() const;
         inline void update_bounds(const osg::Vec3& p, float r);
         void single_pass_render(osg::State& state, const osg::Matrix& modelview) const;
 
@@ -298,18 +299,6 @@ namespace osgParticle
         return _last_frame;
     }
 
-    inline bool ParticleSystem::computeBound() const
-    {        
-        if (!_bounds_computed) {
-            _bbox = _def_bbox;
-        } else {
-			_bbox._min = _bmin;
-			_bbox._max = _bmax;
-        }
-        _bbox_computed = true;
-        return true;
-    }
-
     inline void ParticleSystem::update_bounds(const osg::Vec3& p, float r)
     {
         if (_reset_bounds_flag) {

include/osgParticle/ParticleSystemUpdater

@@ -75,11 +75,12 @@ namespace osgParticle
         
         virtual void traverse(osg::NodeVisitor& nv);
         
+        virtual osg::BoundingSphere computeBound() const;        
+
     protected:
         virtual ~ParticleSystemUpdater() {}
         ParticleSystemUpdater &operator=(const ParticleSystemUpdater &) { return *this; }
         
-        inline virtual bool computeBound() const;        
         
     private:
         typedef std::vector<osg::ref_ptr<ParticleSystem> > ParticleSystem_Vector;
@@ -90,13 +91,6 @@ namespace osgParticle
     
     // INLINE FUNCTIONS
     
-    inline bool ParticleSystemUpdater::computeBound() const
-    {
-        _bsphere.init();
-        _bsphere_computed = true;
-        return true;
-    }
-    
     inline bool ParticleSystemUpdater::addParticleSystem(ParticleSystem* ps)
     {
         _psv.push_back(ps);