文章描述了obj文档的格式规范，以及如何将obj文件读入opengl进行显示，并包含主干代码。-This paper describes the obj format specification documents, and how to read obj opengl to display the file, and contains the trunk code.

利用Lsystem生成彩色的树干和树叶。适合OpenGL初学者学习使用。-Generate color using Lsystem trunk and leaves. Suitable for beginners to learn to use OpenGL.

this pdf file of google c++ style. This guide is for keeping a consistency and code manageability in the open source projects developed by Google using C++. xml version is available in http://code.google.com/p/google-styleguide/source/browse/tr

这个程序是在VC6.0环境下用OpenGL图形库写的一个小游戏坦克大战。程序中使用了OpenGL基本的图形操作，此外还使用了贴图，使得游戏更好看。-in this project ,i writed a sample game named trunk war. in the program, i use the basic operations of the OpenGL ,and i also used the knowlege o f texture.