public double SquareDistanceTo(Locatable locatable)
{
var xDiff = Latitude - locatable.Latitude;
var yDiff = Longitude - locatable.Longitude;
return((xDiff * xDiff) + (yDiff * yDiff));
}
public double DistanceTo(Locatable locatable)
{
return(Math.Sqrt(SquareDistanceTo(locatable)));
}