三维鞋样交互设计方法研究

提出了一种在三角网格鞋楦模型上生成三维帮样曲线的离散表示及其交互编辑修改方法。基于改进的能量模型对鞋楦曲面的选择区域进行展平，利用展平过程建立的三维帮面与展平后二维帮面间的拓扑对应关系，实现鞋样曲线在三维空间与二维展平空间的实时关联；所生成的二维帮样曲线以3次非均匀B-spline表示，并以DXF格式输出，便于其他程序调用。算例结果显示，本文方法具有交互性好、实时直观的优点，能够满足基于楦型的帮样交互设计要求。

Interaction Design Methods of Three-dimensional Shoe Pattern

A new discrete representation approach and an interactive editing method for three-dimensional shoe pattern curves generated on triangular meshes of shoe last model are presented. The selection areas of shoe last surface are flattened by utilizing the improved energy model. The topological relation between three-dimensional upper surfaces and two-dimensional flattened upper surfaces is established in the process of flattening. And the real-time association for shoe pattern curves in three-dimensional and two-dimensional flattened spaces is obtained by using the topological relation mentioned. For the convenience of other programs calling, two-dimensional shoe pattern curves generated are represented by cubic non-uniform B-spline and outputted in the DXF format. Numerical results show that the proposed method has advantages of good interaction and real-time intuition, and the method can meet the requirement of real-time interactive design for shoe pattern based on shoe last.