STL格式文件的拓扑重建方法研究

Research of slice algorithm metal compound rapid prototyping

STL格式文件用三角网格面来描述实体模型,实际应用如逆向工程中需要建立三角形、边和顶点的邻接拓扑关系,其中查找并去除重复顶点是建立拓扑结构的关键。本文通过分析STL格式文件的数据结构特点,建立准确、清晰、简单的拓扑结构,为后续数控加工及STL数据的其他方面的应用提供了极大的方便。

STL （Stereo Lithography） file describes the object model using triangle armeshes. In practice, for example, in reverse engineering, it is necessary to reconstruct the topology of the triangles, edges and vertexes, in which the key is to find and wipe off the repeated vertexes. This text sets up accurate, clear, simple topological structure through analyzing the structural characteristic of data of STL form file, have offered great convenience for subsequent processing of numerical controland application of other respects of STL data.