图形学中编的三维线框的显示的代码，对学习opengl和图形学比较好-Graphics programming 3 d wireframe display code, be good for learning opengl and graphics

线框模式中呈现一个旋转的立方体。 演示顶点和索引缓冲区，世界和视图转换，呈现状态和绘图命令。-Renders a spinning cube in wireframe mode. Demonstrates vertex and index buffers, world and view transformations, render states and drawing commands.