public GPSPoint(Path p)
{
Altitude = p.Altitude;
Distance = 0;
Latitude = p.Latitude;
Longitude = p.Longitude;
Timestamp = p.Timestamp;
}
public GPSPoint(Path p, Distance d, Path prevP, Distance prevD)
{
Altitude = p.Altitude;
Distance = d.Meters;
DistanceFromPreviousPoint = d.Meters - prevD.Meters;
TimestampFromPreviousPoint = d.Timestamp - prevD.Timestamp;
Latitude = p.Latitude;
Longitude = p.Longitude;
Timestamp = p.Timestamp;
}