/// <summary>
/// The <see cref="ITracker.GazeDataChanged"/> event handler.
/// Calculates the new sampling data from the trackers format.
/// Updates the live viewers cursors and send a
/// <see cref="NewRawDataAvailable"/> message to write the
/// data into the database.
/// </summary>
/// <param name="sender">
/// Source of the event.
/// </param>
/// <param name="e">
/// A <see cref="GazeDataChangedEventArgs"/> with the event data.
/// </param>
public void TrackerGazeDataChanged(object sender, GazeDataChangedEventArgs e)
{
// Save current timestamp
lock (this.timeLock)
{
this.lastTimeStamp = e.Gazedata.Time;
}
if (this.currentTrial == null)
{
return;
}
// Create a new RawData object
var newRawData = new RawData
{
SubjectName = this.currentTracker.Subject.SubjectName,
GazePosX = e.Gazedata.GazePosX,
GazePosY = e.Gazedata.GazePosY
};
newRawData = ModifyGazeDataWhenBetweenZeroAndOne(newRawData);
newRawData.PupilDiaX = e.Gazedata.PupilDiaX;
newRawData.PupilDiaY = e.Gazedata.PupilDiaY;
long gazeTime = e.Gazedata.Time - this.recordingStarttime;
newRawData.Time = gazeTime;
newRawData.TrialSequence = this.trialSequenceCounter;
// Retrieve mouse position, this is already in SCREEN COORDINATES
PointF? newMousePos = this.GetMousePosition();
if (this.currentSlide.MouseCursorVisible && newMousePos != null)
{
newRawData.MousePosX = newMousePos.Value.X + this.xScrollOffset;
newRawData.MousePosY = newMousePos.Value.Y + this.yScrollOffset;
}
// Update gaze cursor with reduced update rate
// if (_counter % REDUCING_COUNT == 0)
if (newRawData.GazePosX != null && newRawData.GazePosY != null)
{
var newCursorPos = new PointF(newRawData.GazePosX.Value, newRawData.GazePosY.Value);
if (this.smoothing)
{
if (this.PointsArNear(newCursorPos, this.currentGazeCursorCenter))
{
this.numberOfSamplesInRegion++;
this.sumOfSamplesInRegion.X += newCursorPos.X;
this.sumOfSamplesInRegion.Y += newCursorPos.Y;
this.currentGazeCursorCenter.X = this.sumOfSamplesInRegion.X / this.numberOfSamplesInRegion;
this.currentGazeCursorCenter.Y = this.sumOfSamplesInRegion.Y / this.numberOfSamplesInRegion;
}
else
{
this.numberOfSamplesInRegion = 0;
this.sumOfSamplesInRegion = PointF.Empty;
this.currentGazeCursorCenter = newCursorPos;
}
}
else
{
this.currentGazeCursorCenter = newCursorPos;
}
}
// Update mouse cursor with reduced update rate
// if (_counter % REDUCING_COUNT == 0)
{
if (this.systemHasSecondaryScreen || this.forcePanelViewerUpdate)
{
if (newRawData.MousePosX.HasValue && newRawData.MousePosY.HasValue)
{
this.currentMouseCursorCenter = new PointF(newRawData.MousePosX.Value, newRawData.MousePosY.Value);
}
}
}
if (!this.currentSlide.IsDisabled)
{
this.OnNewRawDataAvailable(new NewRawDataAvailableEventArgs(newRawData));
}
}
/// <summary>
/// The
/// <see cref="GTNetworkClient.GazeData.OnGazeData"/> event handler
/// which is called whenever there is a new frame arrived.
/// Sends the GazeDataChanged event to the recording module.
/// </summary>
/// <param name="sender">
/// The sender.
/// </param>
/// <param name="e">
/// The <see cref="GazeDataChangedEventArgs"/> instance containing the event data.
/// </param>
private void GazeDataReceived(object sender, GazeDataChangedEventArgs e)
{
this.clientStatus = this.clientStatus | HaythamStatus.IsStreaming;
if (e.Gazedata.GazePosX != null && e.Gazedata.GazePosY != null)
{
this.lastGazedataString = string.Format(
"Receiving gaze data: {0}Time: {1} {2} X: {3}, Y: {4} {5} Pupil: {6}",
Environment.NewLine,
e.Gazedata.Time.ToString("N0"),
Environment.NewLine,
e.Gazedata.GazePosX.Value.ToString("N0"),
e.Gazedata.GazePosY.Value.ToString("N0"),
Environment.NewLine,
e.Gazedata.PupilDiaX);
}
if (this.shouldSendGazeSamples)
{
this.lastTime = e.Gazedata.Time;
this.OnGazeDataChanged(e);
}
}
/// <summary>
/// The OnGazeDataReceived method raises the event by invoking
/// the delegates. The sender is always this, the current instance
/// of the class.
/// </summary>
/// <param name="e">
/// An empty <see cref="EventArgs"/>
/// </param>
private void OnGazeDataReceived(GazeDataChangedEventArgs e)
{
// Invokes the delegates.
if (this.GazeDataReceived != null)
{
this.GazeDataReceived(this, e);
}
}
///////////////////////////////////////////////////////////////////////////////
// Inherited methods //
///////////////////////////////////////////////////////////////////////////////
#region OVERRIDES
#endregion //OVERRIDES
///////////////////////////////////////////////////////////////////////////////
// Eventhandler //
///////////////////////////////////////////////////////////////////////////////
#region EVENTS
///////////////////////////////////////////////////////////////////////////////
// Eventhandler for UI, Menu, Buttons, Toolbars etc. //
///////////////////////////////////////////////////////////////////////////////
#region WINDOWSEVENTHANDLER
#endregion //WINDOWSEVENTHANDLER
///////////////////////////////////////////////////////////////////////////////
// Eventhandler for Custom Defined Events //
///////////////////////////////////////////////////////////////////////////////
#region CUSTOMEVENTHANDLER
/// <summary>
/// Raised when new gaze data is available.
/// </summary>
/// <param name="e"><see cref="GazeDataChangedEventArgs"/> event arguments</param>.
private void OnGazeDataChanged(GazeDataChangedEventArgs e)
{
if (this.GazeDataChanged != null)
{
this.GazeDataChanged(this, e);
}
}
/// <summary>
/// Fires the <see cref="Tracker.OnGazeDataChanged"/>
/// event to the recorder, if client has new gaze data.
/// </summary>
/// <param name="sender">Source of the event.</param>
/// <param name="e">A <see cref="GazeDataChangedEventArgs"/> with the event data.</param>
private void SMIClientGazeDataChanged(object sender, GazeDataChangedEventArgs e)
{
this.OnGazeDataChanged(new GazeDataChangedEventArgs(e.Gazedata));
}
/// <summary>
/// Calls listeners methods (which is always the <see cref="RecordModule"/>)
/// when new gaze data is available.
/// </summary>
/// <param name="e">
/// <see cref="GazeDataChangedEventArgs"/> event arguments
/// </param>
protected void OnGazeDataChanged(GazeDataChangedEventArgs e)
{
if (this.GazeDataChanged != null)
{
this.GazeDataChanged(this, e);
}
}
/// <summary>
/// Ons the sample data.
/// </summary>
/// <param name="data">The data.</param>
public void onSampleData(EyeTrackingController.SampleStruct data)
{
lock (LOCK)
{
if (!IsTracking)
{
return;
}
if (this.GazeDataChanged == null)
{
return;
}
GazeData gazeData = ExtractTrackerData(data);
GazeDataChangedEventArgs eventArgs = new GazeDataChangedEventArgs(gazeData);
this.OnGazeDataChanged(eventArgs);
}
}
