//From https://www.movable-type.co.uk/scripts/latlong.html
public static double GetDistanceInMeter(GPSLocation location1, GPSLocation location2)
{
const double radius = 6371000;
var latRad1 = ToRadians(location1.Latitude);
var latRad2 = ToRadians(location2.Latitude);
var deltaLat = ToRadians(location2.Latitude - location1.Latitude);
var deltaLong = ToRadians(location2.Longitude - location1.Longitude);
var a = Math.Sin(deltaLat / 2) * Math.Sin(deltaLat / 2);
a += Math.Cos(latRad1) * Math.Cos(latRad2) * Math.Sin(deltaLong / 2) * Math.Sin(deltaLong / 2);
var c = 2 * Math.Atan2(Math.Sqrt(a), Math.Sqrt(1 - a));
var d = radius * c;
return(d);
}
public bool Equals(GPSLocation other)
{
return(Longitude.Equals(other.Longitude) && Latitude.Equals(other.Latitude));
}