【摘要】 通过对参数化造型技术的深入分析和研究，将描述构成几何图形的几何元素之间结构关系的约束和图形的尺寸约束分离处理．提出了基于约束分离的参数化造型方法。通过对确定几何图形形状的特征点坐标进行记录，形成图形的结构约束数据，可以为图形的尺寸驱动修改过程提供辅助。通过约束分离，参数化造型过程更直观和易于理解，并且能够很好的处理隐含约束、约束不足和过约束。更多还原

【Abstract】 By way of a deep analysis and study onparametrization modelling technique this paper made a separa-tion treatment upon the constraints of structural relationshipamong geometric elements, which describes the formation ofgeometric figure. and the constraints of dimensious, and putforward a parametrization modelling methed based on con-straint separation. By means of carrying out records for the co-ordinates of characteristic points which determine the shape ofgeometric figure,the constructive constraint data of figure areformed and thus provides and assistance for the driving andrevlsing process of dimensions of the figure. The process ofparametrization modelling will be more visual and easy to un-derstand through the separation of constraints and can alsodealing fairly good with implicit constraint, under constraintand over constraint.更多还原