说明：  许多运动物体控制的系统设计和仿真过程中，常需要形象、生动地显示被控对象的姿态及运动过程。利用开放图形程序库（OpenGL),可以直观地显示体三维运动仿真画面。
(Many moving object control system design and simulation process, often require vivid display of the controlled object posture and movement. The use of open graphics library (OpenGL), can directly display three dimensional motion simulation screen.)