计算机图形学综合使用鼠标、菜单、橡皮条等交互技术实现直线、圆和矩形等基本图形的绘制。-integrated computer graphics use a mouse, menus, such as rubber of interactive technology straight, round and rectangular basic graphics rendering.

类天正的自定义实体：墙体，ARX二次开发时候使用。包括实体，和橡皮条。可以自动连接墙线,Class Tianzheng custom entities: the wall, ARX secondary development when used. Including entities, and rubber articles. Can automatically connect the wall line

实现了基本图形的橡皮条程序！可以由用户自己拖到鼠标进行基本图形的绘制！-Graphics to achieve the basic procedure of rubber! Can drag the mouse from the user' s own basic graphics rendering!