/// <summary>Raises the <see cref="Position"/> event</summary>
/// <param name="e">Event arguments</param>
protected virtual void OnPosition(GpsPositionEventArgs e)
{
if (Position != null)
{
Position(this, e);
}
}
/// <summary>Called when GPS position is received</summary>
/// <param name="sender">A GPS provider</param>
/// <param name="e">Event arguments containing actual GPS position</param>
void GpsPositionReceived(GpsProvider sender, GpsPositionEventArgs e)
{
GpsPosition pos = e.Position;
if (waitForStop || !gpsRunning)
{
return;
}
if ((DateTime.Now - lastGpsLoggedAt).TotalMilliseconds < 10)
{
return; //I've experianced multiple logs at same place in same time
}
if (pos.Longitude.HasValue && pos.Latitude.HasValue)
{
afterStart = false;
invalidPositionCount = 0;
lastGpsLoggedAt = DateTime.Now;
DateTime time = AdvancedConfig.UseGpsTime ? pos.GpsTime.ToLocalTime() : DateTime.Now;
decimal? altitude = pos.Altitude.HasValue ? pos.Altitude + (decimal)AdvancedConfig.AltitudeCorrection : null;
string gpsData = string.Format(
AdvancedConfig.TextLogFormat,
time.ToUniversalTime(),
Math.Round(pos.Longitude.Value, 7),
Math.Round(pos.Latitude.Value, 7),
altitude.HasValue ? Math.Round(altitude.Value, 7) : 0,
time,
AdvancedConfig.ElevationUnitName,
statistic == null ? 0.0M : statistic.SumLength * AdvancedConfig.DistanceMultiplier,
AdvancedConfig.DistanceUnitName
);
if (!positionLogged)
{
bool logThisPoint = false; //Check if the point is not too neer to stop-start point
decimal? distance = null;
if (lastPositionA == null)
{
//Stop-start point unknown (immediately after start)
logThisPoint = true;
}
else
{
distance = Math.Abs(GpsPosition.CalculateDistance(lastPositionA.Value, pos, OpenNETCF.IO.Serial.GPS.Units.Kilometers) * 1000);
if (distance < AdvancedConfig.MinimalDistance)
{
//Point is to near
lastPositionC = pos; //Remember it
lastTimeC = time; //And remember the time
}
else
{
//Points are far enough
logThisPoint = true;//Log this point
if (lastPositionC != null && time != lastTimeA && lastTimeA != lastTimeC)
{
WriteToFile(
lastTimeC,
Convert.ToDouble(Math.Round(lastPositionC.Value.Latitude.Value, 7)),
Convert.ToDouble(Math.Round(lastPositionC.Value.Longitude.Value, 7)),
Convert.ToDouble(Math.Round(lastPositionC.Value.Altitude.HasValue ? lastPositionC.Value.Altitude.Value + AdvancedConfig.AltitudeCorrection : 0, 7))
);
}
}
}
WriteToTextbox(gpsData + (logThisPoint ? "" : " X"));
OnPoint(time, new GpsPoint(pos.Latitude.Value, pos.Longitude.Value, pos.Altitude), logThisPoint);
if (logThisPoint)
{
if (distance.HasValue)
{
ShowSpeed(distance.Value / 1000 / (decimal)(time - lastTimeA).TotalHours);
}
Status(Properties.Resources.status_PositionReceived);
lastPositionA = pos; //Remember position
lastTimeA = time; //Remember time
lastPositionC = pos;
lastTimeC = time;
WriteToFile(
time,
Convert.ToDouble(Math.Round(pos.Latitude.Value, 7)),
Convert.ToDouble(Math.Round(pos.Longitude.Value, 7)),
Convert.ToDouble(altitude.HasValue ? Math.Round(altitude.Value, 7) : 0));
}
else
{
Status(string.Format(Properties.Resources.PointsTooNear, distance));
}
StopGps();
}
positionLogged = true;
}
else
{
if (++invalidPositionCount == int.MaxValue)
{
invalidPositionCount = 0;
}
if (!afterStart && AdvancedConfig.InvalidPositionsMax != 0 && invalidPositionCount >= AdvancedConfig.InvalidPositionsMax)
{
invalidPositionCount = 0;
Status(string.Format(Properties.Resources.status_InvalidPosWait, invalidPositionCount));
StopGps();
}
else if (afterStart || AdvancedConfig.InvalidPositionsMax == 0)
{
if ((DateTime.Now - lastInvPosUserTime).TotalMilliseconds >= 900)
{
Status(string.Format("inv. pos. {0}", invalidPositionCount));
lastInvPosUserTime = DateTime.Now;
}
}
else
{
if ((DateTime.Now - lastInvPosUserTime).TotalMilliseconds >= 900)
{
Status(string.Format(Properties.Resources.status_InvalidPos, invalidPositionCount));
lastInvPosUserTime = DateTime.Now;
}
}
}
}
/// <summary>Raises the <see cref="Position"/> event</summary>
/// <param name="e">Event arguments</param>
protected virtual void OnPosition(GpsPositionEventArgs e)
{
if (Position != null) Position(this, e);
}
