Updates from Macro to support the new multitexture API, and improve

bounding box computation.

include/osgParticle/Particle

@@ -171,6 +171,9 @@ namespace osgParticle
         
         /// Perform some post-rendering tasks. Called automatically by particle systems.
         inline void endRender();
+        
+        /// Get the current (interpolated) polygon size. Valid only after the first call to update().
+        inline float getCurrentSize() const;
 
     private:
         Shape shape_;
@@ -391,6 +394,11 @@ namespace osgParticle
         default: ;
         }
     }
+    
+    inline float Particle::getCurrentSize() const
+    {
+		return current_size_;
+    }
 
 
 }