通过选择菜单或工具栏中相应功能完成基本几何图形的绘制(基本几何图形包括直线、圆、椭圆、矩形等)，几何图形能实现存盘和读取显示功能。-By selecting the appropriate menu or toolbar to complete the basic geometry of the mapping function (basic geometric shapes including lines, circles, ellipses, rectangles, etc.), geome