说明：  基于VC++和OpenGL的STL文件读取显示STL是三维模型常用的文件格式。对STL文件进行读取和显示，是对模型进行后续操作的前提。在对STL文件格式进行详细分析的基础上，以VC+-I-作为开发平台
(Based on vc++ and OpenGL STL file read shows the STL is a 3 d model commonly used file format. To read and display of STL file, is the precondition of the model for subsequent operation. In STL file format, on the basis of detailed analysis, with VC+- I- as a development platform )