/// <summary>
/// Convert from CartesianCoordinates3D to SphericalCoordinater3D
/// </summary>
/// <param name="cartesianCoordinates"></param>
/// <returns></returns>
public static SphericalCoordinates3D ConvertToSphericalCoordinator(CartesianCoordinates3D cartesianCoordinates)
{
try
{
var sph = new SphericalCoordinates3D();
var alt2 = cartesianCoordinates.Altitude * cartesianCoordinates.Altitude;
var lng2 = cartesianCoordinates.Longitude * cartesianCoordinates.Longitude;
var lat2 = cartesianCoordinates.Latitude * cartesianCoordinates.Latitude;
sph.R = Math.Sqrt(lat2 + lng2);
//A is an azimuth angle, which is the angle between
//the longitude-axis and latitude-axis of the plane
sph.A = Math.Atan(cartesianCoordinates.Latitude / cartesianCoordinates.Longitude);
sph.A = CorrectAzimuthInRadians(cartesianCoordinates.Longitude, cartesianCoordinates.Latitude, sph.A);
//I is an inclination, which is the angle between the radius R
// and the vector from the center to the point
//sph.I = Math.Acos(c.Z / sph.R2);
sph.D = Math.Atan(cartesianCoordinates.Altitude / sph.R);
return(sph);
}
catch (Exception e)
{
Console.WriteLine(e);
Console.WriteLine("longitude is null");
throw;
}
}
/// <summary>
/// Convert from SphericalCoordinator3D to CartesianCoordinates3D
/// </summary>
/// <param name="sphericalCoordinator"></param>
/// <returns></returns>
public static CartesianCoordinates3D ConvertToCartesianCoordinator(SphericalCoordinates3D sphericalCoordinator)
{
if (sphericalCoordinator == null)
{
return(null);
}
var c = new CartesianCoordinates3D
{
Longitude = Math.Cos(sphericalCoordinator.A) * sphericalCoordinator.R,
Latitude = Math.Sin(sphericalCoordinator.A) * sphericalCoordinator.R,
Altitude = Math.Tan(sphericalCoordinator.D) * sphericalCoordinator.R
};
//x is longitude
//y is latitude
//z is altitude
//c.Z = Math.Cos(sph.I) * sph.R2;
return(c);
}
