T-vertexes are moved away from shadow boundary, so the result is good for radiosity calculation, and the time and space required for eliminating T-vertexes are saved.

• 该算法将T型结点转移到非阴影边界区域，既克服了T型结点给图形计算带来的影响，又避免了消除T型结点所需的额外时间和空间开销。