说明：  ogre是国外著名的3D渲染引擎，免费且开源，可以帮助你很快的实现3D编程，本教程将介绍ogre的使用与编写代码
(famous ogre is 3D rendering engine, free and open source, I can help you quickly achieve the 3D programming, this tutorial will introduce the use of the ogre and the preparation of the code)