在windows窗口中绘制一个球体，添加光照，纹理，鼠标操作，键盘操控等处理，来实现球体的自转，和放大缩小，-Window in the windows to draw a ball, add lighting, textures, mouse, keyboard control and other treatment, to achieve the sphere s rotation, and zoom,

通过程序控制系统显示亮度，可以广泛应用在野外施工，适合不同光照条件下的平板电脑使用-Process control system via the display brightness can be widely applied in the field of construction, tablets suitable for use under different lighting conditions