在学习java的画图的时候，做得一个小应用。对于动态画图的实现。里面可以根据需要修改一下参数，和时间轴，目前这个画出jar我也不是很熟！-Learning java drawing when doing a small application. For the realization of the dynamic drawing. Which can be modified as needed about the parameters, and the timeline, the current