STK仿真工具包主要用于航空航天军事等方面的模拟仿真建模，分析在轨或飞行运行状况。-STK simulation kit is mainly used for aerospace military simulation modeling and analysis in rail or flight status.

利用opengl实现太阳系九大行星模型动画，有光源，有轨道线，不同行星大小、颜色、速度不同-Opengl achieve nine planets of the solar system using model animation, a light source, a rail line, the different planets of different size, color, speed,