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 Vector2D mercator = new Vector2D();
 4 double x = lonLat.X * 20037508.34 / 180;
 5 double y = Math.Log(Math.Tan((90 + lonLat.Y) * Math.PI / 360)) / (Math.PI / 180);
 6   y = y * 20037508.34 / 180;
 7   mercator.X = x;
 8   mercator.Y = y;
 9   return mercator;
10 }
11 //墨卡托转经纬度
12 public Vector2D Mercator2lonLat(Vector2D mercator){
13 Vector2D lonLat = new Vector2D();
14 double x = mercator.X / 20037508.34 * 180;
15 double y = mercator.Y / 20037508.34 * 180;
16   y = 180 / Math.PI * (2 * Math.Atan(Math.Exp(y * Math.PI / 180)) - Math.PI / 2);
17   lonLat.X = x;
18   lonLat.Y = y;
19   return lonLat;
20 }

 

posted @ 2021-10-11 09:20  木章  阅读(458)  评论(0)    收藏  举报