delaunay三角网“动态”构建，用于地形建模等应用-delaunay triangulation dynamic to build, for applications such as terrain modeling

不规则三角网的生成算法，还有一个release版本实现三角网的显示，另外，包含多个测试数据。-TIN generation algorithm, there is a release version implements triangulation show, in addition, includes a plurality of test data.