二维参数化图形技术研究进展

THE ADVANCE IN PARAMETRIC GRAPHIC TECHNIQUE

近几年来，参数化图形技术得到了不断的发展。目前已有多种参数化图形方法及系统。这些参数化图形方法可分为３种，即变分几何法、几何推理法和过程法。主要介绍这３种方法的研究进展。

Since parametric graphic technique appeared, parametric design has improved greatly. Now many parametric methods are developed, and they are different in the aspect of concept. There are three parametric methods used mainly. One is variational geometric method, the second is geometricreasoning method,and the third is modelingmonitor method. This paper will introduce these three kinds of methods in details.