public void ReadGpxData(GpxFile gpxFile, Stream stream)
{
XmlSerializer serializer = new XmlSerializer (typeof (gpx));
gpx gpx = (gpx)serializer.Deserialize (stream);
if (gpx.trk != null)
{
foreach (gpxTrk trkType in gpx.trk)
{
Track track = new Track ();
foreach (gpxTrkTrkseg trkseg in trkType.trkseg)
{
if (trkseg.trkpt.Length > 0)
{
TrackSegment segment = new TrackSegment ();
foreach (gpxTrkTrksegTrkpt trkpt in trkseg.trkpt)
{
TrackPoint waypoint = ReadTrackPoint (trkpt);
segment.AddPoint (waypoint);
}
track.AddSegment (segment);
}
}
gpxFile.AddTrack (track);
}
}
if (gpx.wpt != null)
{
foreach (gpxWpt wptType in gpx.wpt)
{
TrackPoint waypoint = ReadWayoint(wptType);
gpxFile.AddWaypoint (waypoint);
}
}
if (gpx.rte != null)
{
foreach (gpxRte rteType in gpx.rte)
{
Track route = new Track ();
if (rteType.rtept != null)
{
TrackSegment segment = new TrackSegment ();
foreach (gpxRteRtept wptType in rteType.rtept)
{
TrackPoint waypoint = ReadRoutePoint (wptType);
segment.AddPoint (waypoint);
}
}
gpxFile.AddRoute (route);
}
}
}
/// <summary>
/// Calculates statistics for a <see cref="IGpsTrack"/> object.
/// </summary>
/// <param name="gpsTrack"><see cref="IGpsTrack"/> object to calculate statistics for.</param>
/// <returns>GpsTrackStatistics object containing the statistics data.</returns>
public static GpsTrackStatistics CalculateTrackStatistics(Track track)
{
GpsTrackStatistics stat = new GpsTrackStatistics ();
TrackPoint lastPoint = null;
TrackPoint lastPointWithElevation = null;
foreach (TrackSegment segment in track.Segments)
{
foreach (TrackPoint point in segment.Points)
{
stat.Bounds.ExtendToCover(point.Location);
if (point.Elevation.HasValue)
{
stat.MinElevation = Math.Min(stat.MinElevation, point.Elevation.Value);
stat.MaxElevation = Math.Max(stat.MaxElevation, point.Elevation.Value);
}
if (point.Time.HasValue)
{
if (false == stat.StartTime.HasValue || point.Time < stat.StartTime)
stat.StartTime = point.Time.Value;
if (false == stat.EndTime.HasValue || point.Time > stat.EndTime)
stat.EndTime = point.Time.Value;
}
if (lastPoint != null)
{
double horizontalDistance = GpsUtilities.CalculateHorizontalDistance(lastPoint, point);
stat.HorizontalDistance += horizontalDistance;
}
if (lastPointWithElevation != null)
{
// calculate ascent/descent
if (point.Elevation.HasValue)
{
double elevationDifference = point.Elevation.Value - lastPointWithElevation.Elevation.Value;
if (elevationDifference < 0)
stat.TotalDescent -= elevationDifference;
else
stat.TotalAscent += elevationDifference;
}
}
lastPoint = point;
if (point.Elevation.HasValue)
lastPointWithElevation = point;
}
}
return stat;
}
