二次曲线绘制:启动之后开始绘制二次曲线和小人，根据程序休眠时间对整个界面进行重绘，形成小人沿曲线移动的效果,也可以改变曲线的颜色-Conics Drawing: start after drawing the second curve and villains, according to the procedures dormancy time to redraw the entire interface to form a small effect of moving along the cu