public List<double> getlocal(GPS origin)
{
// AddToLogBox("lat1 : " + lat1 + ", long1: " + lng1 + ", lat2: " + lat2 + ", long2: " + lng2);
double lng1 = this.long_coord;
double lng2 = origin.long_coord;
double lat1 = this.lat_coord;
double lat2 = origin.lat_coord;
double earthRadius = 3958.75;
double dLat = (Math.PI / 180) * (lat2 - lat1);
double dLng = (Math.PI / 180) * (lng2 - lng1);
double a = Math.Sin(dLat / 2) * Math.Sin(dLat / 2) +
Math.Cos((Math.PI / 180) * (lat1)) * Math.Cos((Math.PI / 180) * (lat2)) *
Math.Sin(dLng / 2) * Math.Sin(dLng / 2);
double c = 2 * Math.Atan2(Math.Sqrt(a), Math.Sqrt(1 - a));
double dist = earthRadius * c;
//AddToLogBox("dist in miles: " + dist);
double meterConversion = 1609;
dist = dist * meterConversion;
// AddToLogBox("dist in meteres: " + dist);
List<double> local = new List<double>();
return local;
}