public double DistanceFrom(GpsPoint other)
{
const int radius = 3956; // Miles
var lat1 = Lat * Math.PI / 180.0;
var lat2 = other.Lat * Math.PI / 180.0;
var diffLat = (other.Lat - Lat) * Math.PI / 180.0;
var diffLon = (other.Lon - Lon) * Math.PI / 180.0;
var a = Math.Pow(Math.Sin(diffLat / 2.0), 2) + Math.Cos(lat1) * Math.Cos(lat2) * Math.Pow(Math.Sin(diffLon / 2.0), 2);
var c = 2 * Math.Atan2(Math.Sqrt(a), Math.Sqrt(1 - a));
var d = radius * c;
return d;
}
public double DistanceFrom(GpsPoint other)
{
const int radius = 3956; // Miles
var lat1 = Lat * Math.PI / 180.0;
var lat2 = other.Lat * Math.PI / 180.0;
var diffLat = (other.Lat - Lat) * Math.PI / 180.0;
var diffLon = (other.Lon - Lon) * Math.PI / 180.0;
var a = Math.Pow(Math.Sin(diffLat / 2.0), 2) + Math.Cos(lat1) * Math.Cos(lat2) * Math.Pow(Math.Sin(diffLon / 2.0), 2);
var c = 2 * Math.Atan2(Math.Sqrt(a), Math.Sqrt(1 - a));
var d = radius * c;
return(d);
}