开放式CAD图形库的建立与管理

The Establishment and Management of the Open Graph Base in CAD System

针对目前大多数ＣＡＤ系统中图形库存在的通用性差、开发效率低、可维护性和可移植性差等方面的问题，提出建立和管理开放式ＣＡＤ图形库的方法．按此法建造的ＣＡＤ图形库可相对整个ＣＡＤ系统独立，对各级用户具有良好的透明度，便于进行二次开发，便于维护和扩充，从而提高设计效率．

Aiming at the problems existing in most of the graph base in CAD (computer assisted design) system, inducing the poor universality, low exploring efficiency, poor maintainability and transplantation, this article poses a method for establishing and managing the open graph base in CAD system. Based on this method, the open graph base can be independent of the whole CAD system relatively .Due to its good transparency to customers at different levels, it is convenient for further exploration, maintenance and expedition, thus improving the design efficiency.