Real-time specific shape cutaway

Previous work on cutaway has mainly been aimed at showing the presence of the interior objects, and the cut shape has been considerably less important than the visibility of the interior objects. Proposed is a novel approach to cutting a hole of a specific shape in a surface. The user first defines the required shape on the surface; the algorithm then superimposes the shape on the surface and implements the cutaway. Jittering problems associated with the boundary generated by the above steps are resolved and experimental results demonstrate the efficiency of the algorithm.