激光快速成型系统中STL文件浏览器的设计与实现

A STL File Browser to the Design and Implementation on Laser RP System

基于OpenGL技术,结合激光快速成型系统的特点,设计并实现了一个STL文件浏览器,通过计算三角行面片每个顶点的法矢向量,得到了真实感较强的三维几何实体模型的显示效果,并实现了平移、旋转和比例缩放等模型辅助变换操作;重点研究了STL文件数据的读入、模型的拓扑信息提取,模型的辅助变换、正确性的校验、STL文件分层切块和STL文件的保存处理的算法实现,为后续的软件的处理打下了很好的基础;该技术在很多预处理软件中都有成功运用。

This article programs and achieves a STL file browser based on the OpenGL technology and the characteristic of laser fast takes shape the system.It obtains the vivid three-D geometry full-scale mockup demonstration effect by computing the triangle good surface piece each apex law arrow vector and realizes the model assistance transformation operations such as shift,rotation and the proportion scale etc.The STL file data read into the model＇s topology information extraction,model-assisted transformation,correctness verification,STL,and STL files layered cuts to save the file processing algorithm are researched,for subsequent handling of the software lay a good foundation.The technology has been applied successfully in some sketch process software.