异构CAD系统间的几何约束在线交换*

作者：胡静，周广平，李路野 日期：2010-06-28/span> 浏览：3810 查看PDF文档

异构CAD系统间的几何约束在线交换*
胡静，周广平，李路野
（浙江大学 计算机科学与技术学院，浙江 杭州 310027）

摘要：为保证不同CAD系统之间在线交换时几何约束的一致性，提出了一种异构CAD系统间的几何约束在线交换方法。通过分析主流CAD系统的几何约束差异性，给出了几何约束的中性命令表示；接着给出了几何约束的系统命令与中性命令的双向转化算法，并重点介绍其中的差异性解决方法；最后通过实验进行验证。实验验证结果表明，提出的几何约束在线交换方法能够有效地支持几何约束在异构CAD系统间的实时创建、修改和删除操作。
关键词：中性命令；异构CAD系统；几何约束；数据交换
中图分类号：TH164；TP391文献标识码：A文章编号：1001-4551(2010)06-0017-05

Online exchange in geometric constraints among heterogeneous CAD systems

HU Jing, ZHOU Guang-ping, LI Lu-ye
（College of Computer Science, Zhejiang University, Hangzhou 310027, China）

Abstract: To ensure the consistency of geometric constraints among different CAD systems, a method was presented for the online exchange of geometric constraints among heterogeneous CAD systems. Reasonable neutral commands for geometric constraints were defined by comparing the differences among mainstream CAD systems; then dual exchange method was introduced between system geometric constraints and neutral commands, which mainly focuses on the differences of geometric constraints presentation in heterogeneous CAD systems; Lastly the experiment was tested. Experimental results show that the method can effectively support creation, modification and deletion of geometric constraints among heterogeneous CAD systems properly.
Key words: neutral commands; heterogeneous CAD systems; geometric constraints; data exchange