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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。
Through in-depth analysis and research on the parametric modeling technology, the constraints of the structural relationships between the geometric elements that constitute the geometry and the dimensional constraint separation of the graphics will be described. A parametric modeling method based on constraint separation is proposed. By recording the coordinates of the feature points that determine the shape of the geometric shape, the structural constraint data of the graphical shape can be provided to assist the size-driven modification process of the graphic. Through the separation of constraints, parametric modeling process is more intuitive and easy to understand, and can handle implicit constraints, under-constrained and over-constrained.