巡逻动画模拟，这个程序是用Delphi 7开发的，本身没有实用价值，编写它的目的就是演示一下画擦法实现动画的原理以及扫描区的阴影是如何处理出来的。-Patrol animated simulation, this program is developed in Delphi 7, itself has no practical value, the preparation of its aim is to demonstrate what painting brush method to ach