ClipStatus Structure
Assembly: Microsoft.WindowsMobile.DirectX (in microsoft.windowsmobile.directx.dll)
When clipping is enabled during vertex processing (by ProcessVertices, DrawPrimitives, or other drawing functions), Direct3D computes a clip code for each vertex. When a vertex is outside of a particular clipping plane, the corresponding bit is set in the clipping code. Direct3D maintains the clip status using ClipStatus, which has ClipUnion and ClipIntersection members. ClipUnion is a bitwise OR of all vertex clip codes and ClipIntersection is a bitwise AND of all vertex clip codes. Initial values are zero for ClipUnion and 0xFFFFFFFF for ClipIntersection. When RenderStateManager is set to false, ClipUnion and ClipIntersection are set to zero. Direct3D updates the clip status during drawing calls. To compute clip status for a particular object, set ClipUnion and ClipIntersection to their initial values and continue drawing.
Reference
ClipStatus MembersMicrosoft.WindowsMobile.DirectX.Direct3D Namespace