所绘画出的线段类型、颜色和粗细，还有如何定 义画刷的填充颜色和类型。如何用Rectangle函数绘画矩形、用Ellipse函数绘画圆和椭圆和运用 -drawn up by the line type, color and thickness, and how to define the brush paintings filled with color and type. How Rectangle function rectangular painting, painting w

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