标签:style io ar color os sp on 代码 html
关键代码:
using System; using YanZhiwei.DotNet2.Utilities.Models; namespace YanZhiwei.DotNet2.Utilities.Common { /// <summary> /// 火星坐标系 (GCJ-02)与百度坐标系 (BD-09) 转换帮助类 /// </summary> public class BDGCJLatLonHelper { /* *参考: *BD09坐标系:即百度坐标系,GCJ02坐标系经加密后的坐标系。 */ #region 常量 const double x_pi = 3.14159265358979324 * 3000.0 / 180.0; #endregion #region 将GCJ-02坐标转换成BD-09坐标 /// <summary> /// 将GCJ-02坐标转换成BD-09坐标 /// </summary> /// <param name="gcjPoint">GCJ-02坐标</param> /// <returns>BD-09坐标</returns> public LatLngPoint GCJ02ToBD09(LatLngPoint gcjPoint) { LatLngPoint _bdPoint = new LatLngPoint(); double _x = gcjPoint.LonX, y = gcjPoint.LatY; double _z = Math.Sqrt(_x * _x + y * y) + 0.00002 * Math.Sin(y * x_pi); double _theta = Math.Atan2(y, _x) + 0.000003 * Math.Cos(_x * x_pi); _bdPoint.LonX = _z * Math.Cos(_theta) + 0.0065; _bdPoint.LatY = _z * Math.Cos(_theta) + 0.006; return _bdPoint; } #endregion #region 将BD-09坐标转换成GCJ-02坐标 /// <summary> /// 将BD-09坐标转换成GCJ-02坐标 /// </summary> /// <param name="bdPoint">BD-09坐标</param> /// <returns>GCJ-02坐标</returns> public LatLngPoint BD09ToGCJ02(LatLngPoint bdPoint) { LatLngPoint _gcjPoint = new LatLngPoint(); double _x = bdPoint.LonX - 0.0065, _y = bdPoint.LatY - 0.006; double _z = Math.Sqrt(_x * _x + _y * _y) - 0.00002 * Math.Sin(_y * x_pi); double _theta = Math.Atan2(_y, _x) - 0.000003 * Math.Cos(_x * x_pi); _gcjPoint.LonX = _z * Math.Cos(_theta); _gcjPoint.LatY = _z * Math.Sin(_theta); return _gcjPoint; } #endregion } }
[C#]火星坐标系 (GCJ-02)与百度坐标系 (BD-09) 转换帮助类
标签:style io ar color os sp on 代码 html
原文地址:http://www.cnblogs.com/Yan-Zhiwei/p/4157584.html