为实现由参数曲面构成的鞋品外观的计算机辅助设计,利用二次开发技术,开发出了一个三维环境下的鞋品外观样式计算机辅助设计原型系统。利用该CAD系统,可实现草图设计面的空间自动定位、草图轮廓到曲面的定制投影、基于草图投影轮廓的曲面自动裁剪以及基础曲面的自动复制等诸多鞋样设计中的关键问题。
In this work, to implement shoe design based on 3D lasts which made up of parametric surfaces, we develop a CAD prototype system for shoe styles with further-development method. In this system, some key problems, wich are the automatic position of the sketch design plane, the projection from the sketch profiles onto the shoe-last surface, the surface trimming based on the projection outlines and the au tomatic replication of original shoe last surface, have been solved.