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

三维图形学NURBS算法实现源代码，对搞三维图形编程的人有帮助-NURBS 3D graphics algorithm source code to engage in three-dimensional graphics programming to help people