/// <summary>
/// Returns <see langword="true"/> if current instance is equivalent to <see cref="other"/>, else <see langword="false"/>
/// </summary>
/// <param name="other"></param>
/// <returns></returns>
public bool Equals(Position other)
{
if (ReferenceEquals(null, other))
{
return false;
}
if (ReferenceEquals(this, other))
{
return true;
}
return Equals(other.Longitude, Longitude) && Equals(other.Latitude, Latitude);
}
/// <summary>
/// Returns the distance between this position and <see cref="position"/> in meters
/// </summary>
/// <param name="position"></param>
/// <returns></returns>
public double DistanceFrom(Position position)
{
double lat1 = Latitude.RawValue.ToRadians();
double long1 = Longitude.RawValue.ToRadians();
double lat2 = position.Latitude.RawValue.ToRadians();
double long2 = position.Longitude.RawValue.ToRadians();
double longitudeDistance = long1 - long2;
double latitudeDistance = lat1 - lat2;
double a = Math.Pow(Math.Sin(latitudeDistance / 2.0), 2.0) +
Math.Cos(lat1) * Math.Cos(lat2) *
Math.Pow(Math.Sin(longitudeDistance / 2.0), 2.0);
double c = 2.0*Math.Atan2(Math.Sqrt(a), Math.Sqrt(1.0 - a));
const double radiusOfEarth = 6371009;
return radiusOfEarth*c;
}
