参数化图形的二种实施方法

Two Methods of Implementing Parametric Graphic

本文介绍了作者在CAD软件研究开发中曾经使用过的图形随参数（尺寸）变化的二种实施方法：①MOUSE拖动；②尺寸驱动。另外还分析比较了它们各自的优缺点和适用范围。

This paper present two methods of implementing parametric graphic applied in CAD software development during thepast years.They are:①Mouse drag.②demension drive. Besides, analysis and comparison about the applicable range and advantage and drawback of two methods are given.