/// <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 static 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);
}
/// <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 static 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);
}
