摘要
基于Web墨卡托投影,详述了构建桌面地理信息系统的坐标变换算法、图块组织、双缓冲地图显示和漫游、缩放、测距等地图通用操作的方法和技巧。
Based on Web Mercator projection,Gives the build desktop geographic information system for the coordinate transformation algorithm,tile organization,double buffer map display and pan,zoom,distance and other common operating methods and techniques.
出处
《电脑编程技巧与维护》
2011年第8期41-43,51,共4页
Computer Programming Skills & Maintenance
