public static int Main(string[] args)
{
var parsedArgs = new ParsedArgs(args);
if (parsedArgs.Ready)
{
Console.WriteLine(parsedArgs);
using (XmlReader fileReader = XmlReader.Create(parsedArgs.InTrackFile)) {
XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = true;
settings.CloseOutput = true;
settings.Encoding = UTF8Encoding.UTF8;
settings.WriteEndDocumentOnClose = true;
settings.NamespaceHandling = NamespaceHandling.OmitDuplicates;
using (XmlWriter fileWriter = XmlWriter.Create(parsedArgs.OutTrackFile, settings)) {
Statistics stats = new Statistics();
GpxPoint previous = null;
stats.Init();
ProcessMethodExtended dealPoint = (XmlReader entry, object extraData) => {
GpxPoint current = new GpxPoint(ProcessXml.ReadElement(entry), fileReader.NamespaceURI);
if (current.Hdop > parsedArgs.HdopLimit)
{
Console.WriteLine(current + ", hdop " + current.Hdop);
}
else
{
ProcessPoint(current, ref previous, ref stats);
}
current.Entry.WriteTo(extraData as XmlWriter);
};
var segment = new PartsRunner("trkseg", "trkpt", dealPoint);
var track = new PartsRunner("trk", "trkseg", segment.Run);
fileWriter.WriteStartDocument();
fileReader.MoveToContent();
fileWriter.WriteStartElement("gpx", fileReader.NamespaceURI);
// xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd">
fileWriter.WriteAttributeString("version", "1.1");
ProcessXml.ProcessEntries(fileReader, "trk", track.Run, fileWriter);
fileWriter.WriteEndElement();
fileWriter.Close();
Console.WriteLine(stats);
}
}
}
else
{
Console.WriteLine("Wrong arguments passed to the application.");
}
return(0);
}
public static double CalcVelocity(GpxPoint previous, GpxPoint current, double distance = -1.0)
{
if (.0 > distance)
{
distance = CalcDistance(previous, current);
}
return(distance / (current.Moment - previous.Moment).TotalSeconds);
}
public static double CalcDistance(GpxPoint previous, GpxPoint current)
{
const double R = 6371e3; // Earth radius
double rLat1 = previous.Latitude * Math.PI / 180.0,
rLat2 = current.Latitude * Math.PI / 180.0,
drLon = (current.Longitude - previous.Longitude) * Math.PI / 180.0;
double a = Math.Sin((rLat2 - rLat1) / 2.0),
b = Math.Sin(drLon / 2.0);
double hcls = a * a + Math.Cos(rLat1) * Math.Cos(rLat2) * b * b;
return(R * 2 * Math.Atan2(Math.Sqrt(hcls), Math.Sqrt(1 - hcls)));
}
private static void ProcessPoint(GpxPoint current, ref GpxPoint previous, ref Statistics stats)
{
if (null != previous)
{
current.Previous = previous;
stats.Distance += current.Distance;
stats.Time += (current.Moment - previous.Moment).TotalSeconds;
stats.AvdSpeed += current.Velocity * current.Distance;
if (current.Velocity < stats.MinSpeed)
{
stats.MinSpeed = current.Velocity;
}
if (current.Velocity > stats.MaxSpeed)
{
stats.MaxSpeed = current.Velocity;
}
}
previous = current;
Console.WriteLine(current + ", distance " + current.Distance + ", velocity " + current.Velocity);
}