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 }

本文转自94cool博客园博客，原文链接：http://www.cnblogs.com/94cool/p/4109944.html，如需转载请自行联系原作者