图形学的一个小型Vcad绘图程序，可以绘制直线，园，园弧，椭圆，可以直线剪裁，填充，还可以绘制Btz曲线-graphics of a small Vcad mapping procedures, drawing straight lines, the landscape, the landscape arc, ellipse, straight line tailoring, Filling can also draw Btz curve

适合于图形学的初学者学习的二维图形绘制包-Graphics for beginners to learn the two-dimensional graphics rendering package