Interfaces
 InterfaceDescription
 IBlockerConsumer Interface for containers capable of storing blockers.
 IBlockerProvider Interface for objects that provide blocker instances for occlusion culling in the renderer.
Classes
 ClassDescription
 Blocker Abstract primitive that can block other primitives from drawing
 BlockerArray Array for storing blocker objects
 ConvexBlocker Convex hull primitive that blocks all primitives behind and contained completely inside.