Region
class Region : public Tree<Region>, public Memory<Region>
Region::PolygonVisible
Region::SphereVisible
Region::EllipsoidVisible
Region::BoxVisible
Region::CylinderVisible
Region::PolygonOccluded
Region::SphereOccluded
Region::EllipsoidOccluded
Region::BoxOccluded
Region::CylinderOccluded
Region();
Tree<Region>
Memory<Region>