This demo scene consists of a torus spinning around some lion statues. The background is a single photograph and the torus is occluded by a simple box positioned "invisibly" in front of the statues.Here for demonstration purposes the occlusion geometry (the box) is highlighted in red on alternate revolutions.
The OccluderGroup has exactly the same interface as a standard Group node. Child nodes of the OccluderGroup are invisible and serve to hide any nodes further down in the scenegraph.
