先对散点进行三角网生成，然后再有三角网生成Voronoi多边形。还可以在生成的Voronoi图中继续追加散点，进一步生成新的Voronoi图。程序在Vc++2003环境下编译通过。-Get TIN through some points.Then derive Voronoi graph from TIN.After you get your first Voronoi graph,you can continue add new points to form new Voronoi graph