对二维和三维数据可视化,图像处理,动画制作等高层次的绘图命令,也包括可以修改图形及编制完整图形界面的,低层次的绘图命令,Of two-dimensional and three-dimensional data visualization, image processing, high-level animation of graphics commands, but also can modify the graphics and the preparation of a full graphical interface, and low-level graphics command