OpenSceneGraph渲染任何一个人的基本理论，只要他需要…

代码说明：

OpenSceneGraph基本渲染理论 任何一个人，只要他需要在计算机中组织他所要渲染的场景，而这些场景在现实中又是非常复杂的，他首先要面临的是效率问题，故明思议：需要在计算机中合理组织，高效显示的用户，关心场景图。-OpenSceneGraph rendering the basic theory of any one person, as long as he needs the computer to organize his rendering of the scene, and these scenes are in reality very complex, he must first face the problem of efficiency, so you Ming: the need for computer rational organization, and efficient display of the user, concerned about the scene graph.