【摘要】 本文针对现有CAD系统的不足,提出了动态图形数据结构的概念及其构成原理,并从集合论的角度对动态图形数据结构进行了较精确的定义。在此图形数据结构基础上设计的交互式CAD系统可有效地解决图形识别和参数作图的问题,这为从根本上解决CAD与CAPP的集成以及使CAD具有理想的、高效的工作方式提供了理论上的依据。更多还原

【Abstract】 In this paper,we put forword the conception and the forming fundamental theory of the dynamic graph data structure,which point at the insufficient of existing CAD system,And the conception is accurately defineted from set theory The CAD system which dased on the dynamic graph data structure can efficiently solve the problem of graph distinguishing and parameter draming.This provided theoretical basis for solving the problem of intergrating CAD/CAPP and making the CAD system have the ideal end effcient working way.更多还原