private static LocateInfo transform(double lat, double lon)
{
LocateInfo info = new LocateInfo();
if (outOfChina(lat, lon))
{
info.isChina = false;
info.latitude = lat;
info.longtitude = lon;
return(info);
}
double dLat = transformLat(lon - 105.0, lat - 35.0);
double dLon = transformLon(lon - 105.0, lat - 35.0);
double radLat = lat / 180.0 * pi;
double magic = Math.Sin(radLat);
magic = 1 - ee * magic * magic;
double sqrtMagic = Math.Sqrt(magic);
dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
dLon = (dLon * 180.0) / (a / sqrtMagic * Math.Cos(radLat) * pi);
double mgLat = lat + dLat;
double mgLon = lon + dLon;
info.isChina = true;
info.latitude = mgLat;
info.longtitude = mgLon;
return(info);
}
public static LocateInfo gcj02_To_Wgs84(double lat, double lon)
{
LocateInfo info = new LocateInfo();
LocateInfo gps = transform(lat, lon);
double lontitude = lon * 2 - gps.longtitude;
double latitude = lat * 2 - gps.latitude;
info.isChina = gps.isChina;
info.latitude = latitude;
info.longtitude = lontitude;
return(info);
}
