public static Vector3Double GeodeticToDatabase(GeodeticCoord geod)
{
return(new Vector3Double(
(((geod.Lon - _refLatLon.Lon)) * (flat_earth_radius * PI * Cos(DegreesToRadians(_refLatLon.Lat)))) / 180.0,
geod.Alt,
((geod.Lat - _refLatLon.Lat) * (flat_earth_radius * PI)) / 180.0
));
}
public static GeocentricCoord GeodeticToGeocentric(GeodeticCoord geod)
{
var lambda = DegreesToRadians(geod.Lat);
var phi = DegreesToRadians(geod.Lon);
var s = Sin(lambda);
var N = a / Sqrt(1 - e_sq * s * s);
var sin_lambda = Sin(lambda);
var cos_lambda = Cos(lambda);
var cos_phi = Cos(phi);
var sin_phi = Sin(phi);
return(new GeocentricCoord(
(geod.Alt + N) * cos_lambda * cos_phi,
(geod.Alt + N) * cos_lambda * sin_phi,
(geod.Alt + (1 - e_sq) * N) * sin_lambda
));
}
public static UTMCoord GeodToUTM(GeodeticCoord geod)
{
UTMCoord utm;
utm.Zone = (int)Floor((geod.Lon + 180.0) / 6) + 1;
MapLatLonToXY(DegreesToRadians(geod.Lat), DegreesToRadians(geod.Lon), UTMCentralMeridian(utm.Zone), out utm.X, out utm.Y);
/* Adjust easting and northing for UTM system. */
utm.X = utm.X * utm_scale_factor + 500000.0;
utm.Y = utm.Y * utm_scale_factor;
if (utm.Y < 0.0)
{
utm.Y = utm.Y + 10000000.0;
}
utm.IsNorthHemisphere = geod.Lat >= 0;
utm.Z = geod.Alt;
return(utm);
}
