经纬度和墨卡托互相转换

 1 //经纬度转墨卡托
 2         public Vector2D lonLat2Mercator(Vector2D lonLat)
 3         {
 4             Vector2D mercator = new Vector2D();
 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 Vector2D Mercator2lonLat(Vector2D mercator)
14         {
15             Vector2D lonLat = new Vector2D();
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         }

WGS84经纬度坐标