平面物体的集合运算及实现

Realization of Plane Object's Set Operations

通过全面讨论两有界平面之间的相互分割，在双交线、单交线、单重合边、双重合边等概念的基础上，论述了该运算所需的各最小有界平面的形成、分类与合并等操作以及对悬面、悬边、悬点等特殊情况的处理，实现了平面物体的集合运算。

On the basis of conception of double cross line, single cross line, single coincident line and double coincident line in two bounded planes partitioned from each other, minimum bounded plane's forming, classifying, combining are discussed. Processing of suspension plane, side and point is discussed as well. Plane object's set operations are realized.