变量化设计环境下的拓扑实体一致性命名机理

Study of mechanism of persistent naming in variation design

基于约束的变量化三维特征造型环境,在命名机理中完全依赖特征方向进行拓扑实体区分会在三维模型重构中引发一些设计语义错误,针对这一问题,提出了一种图论和参数空间相结合的编码和解码方法进行拓扑实体一致性命名维护,纠正了在命名机理中完全依赖特征方向进行拓扑实体区分而造成的三维模型重构中的设计语义错误.本方法采用统一的编码表达,实现了编码和解码过程效率性和有效性的统一,提出的部分算法已成功应用于三维商品化原形系统中.

In constraint-based 3D modeling variational design environment, taking orientation information as a dominant factor in naming scheme vill result in design semantics inconsistency between original model and regenerated model, because the influence caused by automatic rebuild of constraints on exact interpretation of orientation would not be seized by the design system. The graph-based coding and decoding method and parameter information were presented. The user design intent in constraint-based variation design was maintained. With uniform naming, the method enhanced both effectiveness and efficiency in the process of coding and decoding. Part of the algorithms was implemented in a commercial 3D modeling prototype.