语义特征造型的拓扑元素编码机制  

Coding mechanism for topological entities in semantic feature modeling

作　　者：高雪瑶[1] 孙立镌[1] 

机构地区：[1]哈尔滨理工大学计算机科学与技术学院,哈尔滨150080

出　　处：《计算机应用研究》2010年第3期938-940,944,共4页Application Research of Computers

基　　金：国家自然科学基金资助项目(60173055)

摘　　要：针对现有拓扑元素标志与编码方法都是面向基于历程的造型系统,无法完全满足与历程无关语义特征造型的需要这一问题,提出一种以特征为基础的拓扑元素标志方法,并归纳出了一种统一格式的拓扑元素编码方法。当拓扑元素发生分裂时,给出了区分分裂面和分裂边的方法及编码格式;根据模型修改前后拓扑元素的不同变化情况,提出虚拓扑元素和子边的概念及编码格式,通过保留模型中拓扑元素间的拓扑关系,实现与历程无关的模型修改操作,并将该方法在自主开发的语义特征造型系统(HUST-CAID)中加以实现。The naming and coding for topological entities were all for history-based modeling systems, which could not entirely support history-independent semantic fealure modeling. This paper proposed a feature-based method for naming topological entities, and proposed a uniform coding method of topological entities. Gave differentiate methods and coding format for the split faces and edges. And proposed virtual topological entity and sub-edge according to topological entities variation after model modifying. Remained relations between topological entities to realize history-independent model modification. The proposed method was realized in HUST-CAID.

关 键 词：与历程无关 拓扑元素 编码 虚拓扑元素 子边 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]