标签:style blog http color div log new sp on
1 //经纬度转墨卡托 2 public MapPoint lonLat2Mercator(MapPoint lonLat) 3 { 4 MapPoint mercator = new MapPoint(); 5 double x = lonLat.X * 20037508.34 / 180; 6 double y = Math.Log(Math.Tan((90 + lonLat.Y) * Math.PI / 360)) / (Math.PI / 180); 7 y = y * 20037508.34 / 180; 8 mercator.X = x; 9 mercator.Y = y; 10 return mercator; 11 } 12 //墨卡托转经纬度 13 public MapPoint Mercator2lonLat(MapPoint mercator) 14 { 15 MapPoint lonLat = new MapPoint(); 16 double x = mercator.X / 20037508.34 * 180; 17 double y = mercator.Y / 20037508.34 * 180; 18 y = 180 / Math.PI * (2 * Math.Atan(Math.Exp(y * Math.PI / 180)) - Math.PI / 2); 19 lonLat.X = x; 20 lonLat.Y = y; 21 return lonLat; 22 }
From http://xuliduo.iteye.com/blog/1534475
标签:style blog http color div log new sp on
原文地址:http://www.cnblogs.com/JiNerd/p/3931323.html