internal void Recalculate()
{
TransformCoordinates();
_SpeedVector = new GPXVector();
_Speed = 0;
_DirectionVector = new GPXVector();
if (_PreviousWaypoint == null)
{
_DistanceVector = new GPXVector();
_Distance = 0;
_TrackDistanceFromStart = 0;
}
else
{
_DistanceVector = this - _PreviousWaypoint;
_Distance = _DistanceVector.GetLength(this.latField);
_TrackDistanceFromStart = _PreviousWaypoint.GetTrackDistanceFromStart() + _Distance;
if (_Distance > 0.01)
_DirectionVector = _DistanceVector / _Distance;
else
_DirectionVector = new GPXVector();
//if ((this.timeFieldSpecified) && (_PreviousWaypoint.timeFieldSpecified))
//{
TimeSpan ts = this.Time.Subtract(_PreviousWaypoint.Time);
double timeDiff = ts.Ticks / 10000000;
if (timeDiff != 0)
{
_SpeedVector = _DistanceVector / timeDiff;
_Speed = _SpeedVector.GetLength(this.latField);
}
//}
}
}
public void AdjustPoint(GPXVector vector)
{
AdjustPoint(vector.DeltaLongitude, vector.DeltaLatitude, vector.DeltaElevation);
}
internal void RelateToStartPoint(ref WayPoint start) //, out GPXVector distanceVector, out double time)
{
_DistanceFromStart = this - start;
_TimeSinceStart = this.Time.Subtract(start.Time);
}