实现三维坐标显示及相关运动的程序。三维图形可以以网格和线条显示，不同z坐标值用不同颜色显示，类似MatLab的显示。图形可以选择和移动。-3D coordinates indicating the movement and related procedures. 3D graphics can grids and lines, different z coordinates with different colors, similar to the display MatLab. Graphic