基于OpenGL和谷歌地图的电子地图实时绘制方法研究
Research on Electronic Map Drawing Method Based on OpenGL and Google Maps Tile Data

介绍了谷歌地图的投影方式和栅格瓦片数据组织格式，通过对谷歌地图栅格瓦片数据的重新组织、合并和索引构建了离线的、单一的地图数据包文件，基于OpenGL图形渲染引擎和多线程技术，设计实现了高速实时的二维电子地图控件，经实际应用满足了二维战场态势、作战想定编辑等组件对于二维电子地图实时显示的要求，避免了使用矢量地图时详细的矢量数据珍贵且难以获取、渲染和绘制技术实现困难的问题。
This paper introduces the projection mode of Google Map and the organization mode of raster tile data. By reorganizing, merging and indexing the raster tile data of Google Map, an off-line and single map data package is constructed. Base on OpenGL graphics rendering engine and multi-threaded rendering technology, a high-speed and real-time 2-dimensional electronic map control is designed and implemented, which is applied to 2-dimensional battlefield situation, battle scenario editing and other components to avoid the problem that detailed vector data is precious and difficult to obtain, and it is difficult to implement the render and draw technology when using vector map