Resizes a node in view space. The current scaling of the node will be overridden.
The node will be handled as if it is sphere. pWorldRadius is the assumed radius of the
sphere (e.g. radius of the bounding sphere). pPixelRadius is the desired radius in view space.
Resizes a node in view space. The current scaling of the node will be overridden. The node will be handled as if it is sphere. pWorldRadius is the assumed radius of the sphere (e.g. radius of the bounding sphere). pPixelRadius is the desired radius in view space.