public Track(Gpx.GpxTrack oldtrk) : this()
{
Comment = oldtrk.Comment;
Description = oldtrk.Description;
Name = oldtrk.Name;
number = oldtrk.Number.ToString();
srcField = oldtrk.Source;
foreach (Gpx.GpxTrackSegment oldseg in oldtrk.Segments)
{
TrackSegment seg = new TrackSegment();
foreach (Gpx.GpxPoint pt in oldseg.TrackPoints)
{
seg.WayPoints.Add(new WayPoint(pt));
}
TrackSegments.Add(seg);
}
}
public static Track FromRoute(Route route)
{
Track retVal = new Track();
retVal.Classification = route.Classification;
retVal.Comment = route.Comment;
retVal.Description = route.Description;
retVal.Link = route.Link;
retVal.Name = route.Name;
retVal.number = route.Number;
retVal.Source = route.src;
retVal.TrackSegments = new List<TrackSegment>();
TrackSegment segment = new TrackSegment();
segment.WayPoints = new List<WayPoint>();
foreach (WayPoint wp in route.rtept)
{
segment.WayPoints.Add(wp);
}
retVal.TrackSegments.Add(segment);
return retVal;
}
public TrackSegment Compress(double neighbourDistance, double lineDistance, double angle)
{
TrackSegment retVal = new TrackSegment(true);
TrackSegment original = this;
double neighbourDistanceSquare = neighbourDistance * neighbourDistance;
double lineDistanceSquare = lineDistance * lineDistance;
double angleRad = angle * Math.PI / 180.0;
double angleSine = Math.Sin(angleRad);
double angleSineSquare = angleSine * angleSine;
int numRemoved = 0;
do
{
numRemoved = 0;
bool previousDeleted = false;
foreach (WayPoint wp in original.WayPoints)
{
WayPoint previous = wp.PreviousWaypoint;
if (previousDeleted)
{
previousDeleted = false;
//skip this point and
//add it to the new track segment
WayPoint copy = wp.Copy();
retVal.WayPoints.Add(copy);
continue;
}
if (CanDelete(wp, previous, neighbourDistanceSquare, lineDistanceSquare, angleSineSquare))
{
previousDeleted = true;
numRemoved++;
}
else
{
previousDeleted = false;
//add to the new track segment
WayPoint copy = wp.Copy();
retVal.WayPoints.Add(copy);
}
}
if (numRemoved > 0)
{
original = retVal;
original.Recalculate();
retVal = new TrackSegment(true);
}
}
while (numRemoved > 0);
return retVal;
}
