随着鼠标的移动，根据鼠标在屏幕上的位置产生类似银河旋转的效果-With the mouse movement, according to the location of the mouse on the screen produce similar effects of galactic rotation

银河帝国的源代码，我简单的修改了一下，希望大家一起学习研究。-Galactic Empire source code, I simply modified a bit, I hope everyone Learning.