private static Record ParseRecord(string aLine)
{
NumberFormatInfo info = NumberFormatInfo.InvariantInfo;
string[] fields = aLine.Split(',');
Record result = new Record();
result.Time = GetDateTime(fields[0]);
result.Location = new PointLatLng(double.Parse(fields[1], info), double.Parse(fields[2], info));
result.Altitude = float.Parse(fields[3], info);
result.VelocityNorth = float.Parse(fields[4], info);
result.VelocityEast = float.Parse(fields[5], info);
result.VelocityDown = float.Parse(fields[6], info);
return result;
}
public static void CalculateMissingData(LogEntry aEntry)
{
int num = aEntry.Records.Count;
for (int i = 1; i < num; i++)
{
Record a = aEntry.Records[i];
Record b = aEntry.Records[i - 1];
// calculate differences.
double timeDiff = (a.Time - b.Time).TotalSeconds;
double altitudeDiff = a.Altitude - b.Altitude;
double latDiff = DistanceInMeters(a.Location.Lat, b.Location.Lat);
double lngDiff = DistanceInMeters(a.Location.Lng, b.Location.Lng);
// calculate velocities.
a.VelocityDown = (float)(-altitudeDiff / timeDiff);
a.VelocityNorth = (float)(latDiff / timeDiff);
a.VelocityEast = (float)(-lngDiff / timeDiff);
// store result.
aEntry.Records[i] = a;
}
}
public static void Import(string aKey, GpxFile aFile, AddEntryCallback aCallback)
{
if (aFile != null)
{
// apply some basic filtering of loaded GPX data
FileFilterChain filterChain = new FileFilterChain();
filterChain.Filters.Add(new RemoveErrorPointsFilter());
aFile = filterChain.ApplyFilters(aFile);
// convert to LogEntry.
int idx = 0;
foreach (Track track in aFile.Tracks)
{
if (track.Segments.Count > 0)
{
TrackSegment firstSeg = track.Segments[0];
string key = string.Format("{0}/{1}[{2}]", aKey, track.Name, idx);
DateTime time = (DateTime)firstSeg.StartTime;
LogEntry entry = new LogEntry(key, time, firstSeg.PointsCount);
foreach (TrackSegment seg in track.Segments)
{
foreach (TrackPoint pnt in seg.Points)
{
Record rec = new Record();
rec.Location = new PointLatLng(pnt.Location.Y, pnt.Location.X);
if (pnt.Time != null)
{
rec.Time = (DateTime)pnt.Time;
}
if (pnt.Elevation != null)
{
rec.Altitude = (float)pnt.Elevation;
}
entry.Records.Add(rec);
}
}
CalculateMissingData(entry);
aCallback(key, entry);
idx++;
}
}
}
}
public static LogEntry Read(string aKey, BinaryReader aReader)
{
int version = aReader.ReadByte();
DateTime date = DateTime.FromBinary(aReader.ReadInt64());
int count = aReader.ReadInt32();
LogEntry result = new LogEntry(aKey, date, count);
for (int i = 0; i < count; ++i)
{
Record rec = new Record();
rec.Time = DateTime.FromBinary(aReader.ReadInt64());
rec.Location = new PointLatLng(aReader.ReadDouble(), aReader.ReadDouble());
rec.Altitude = aReader.ReadSingle();
rec.VelocityNorth = aReader.ReadSingle();
rec.VelocityEast = aReader.ReadSingle();
rec.VelocityDown = aReader.ReadSingle();
result.Records.Add(rec);
}
return result;
}
