/// <summary>
/// Create a new Track by loading from a GPX file.
/// </summary>
/// <param name="filespec">The filespec of a GPX file.</param>
public Track(string gpxfile)
{
Points = new List<TrackPoint>();
XmlDocument x = new XmlDocument();
x.Load(gpxfile);
if(x.DocumentElement.Name != "gpx")
throw new ApplicationException("Document element should be 'gpx'");
string ns = "http://www.topografix.com/GPX/1/0";
string ver = x.DocumentElement.GetAttribute("version");
if(ver != null && ver == "1.1")
ns = "http://www.topografix.com/GPX/1/1";
XmlNamespaceManager nsmgr = new XmlNamespaceManager(x.NameTable);
nsmgr.AddNamespace("gpx", ns);
if(x.GetElementsByTagName("name").Count > 0)
Name = x.GetElementsByTagName("name") [0].InnerText;
else
Name = Path.GetFileNameWithoutExtension(gpxfile);
foreach(XmlNode point in x.SelectNodes("//gpx:trkpt",nsmgr)) {
TrackPoint p = new TrackPoint();
p.Lat = XmlConvert.ToDouble(point.SelectSingleNode("@lat").Value);
p.Lon = XmlConvert.ToDouble(point.SelectSingleNode("@lon").Value);
p.Elevation = XmlConvert.ToDouble(point.SelectSingleNode("gpx:ele", nsmgr).InnerText);
p.Time = DateTime.Parse(point.SelectSingleNode("gpx:time", nsmgr).InnerText).ToUniversalTime();
Points.Add(p);
}
}
public object Clone()
{
TrackPoint copy = new TrackPoint();
copy.Lat = Lat;
copy.Lon = Lon;
copy.Elevation = Elevation;
copy.Time = Time;
return copy;
}