点击运行后，显示屏上出现一个蓝色的水面，当单击动画工具按钮后，再用鼠标点击屏幕，会显示水纹扩散，再次点击工具按钮，动画停止，屏幕定格-Click to run after a blue screen appeared on the surface, when the button click animation tool, and then click the screen will show the spread of水纹, click the Tools button again, anim