基于OSG的*.SHP文件格式的读写作,良好的效率、分级加载世界各地的地名。-Based on OSG*. SHP file format of the reading and writing, good efficiency, grading loading place names around the world.

基于边坍塌完成的网格模型简化以及空洞填充，具有图形化操作界面。(Based on the edge collapse, the mesh model is simplified and the cavity is filled, which has a graphical operation interface.)