/// <summary>
/// Extracts the tracker data.
/// </summary>
/// <param name="data">The data.</param>
/// <returns></returns>
public GazeData ExtractTrackerData(EyeTrackingController.SampleStruct data)
{
GazeData result = new GazeData();
float gazePosXLeft = Convert.ToSingle(data.leftEye.gazeX);
float gazePosXRight = Convert.ToSingle(data.rightEye.gazeX);
float gazePosYLeft = Convert.ToSingle(data.leftEye.gazeY);
float gazePosYRight = Convert.ToSingle(data.rightEye.gazeY);
result.GazePosX = (gazePosXLeft + gazePosXRight) / 2;
result.GazePosY = (gazePosYLeft + gazePosYRight) / 2;
if (result.GazePosX > 1000 * 10)
{
result.GazePosX = result.GazePosX / 1000;
}
if (result.GazePosY > 1000 * 10)
{
result.GazePosY = result.GazePosY / 1000;
}
long MICROSECONDS = 1000;
result.Time = (data.timestamp / MICROSECONDS);
this.lastTime = result.Time;
result.PupilDiaX = Convert.ToSingle(data.leftEye.diam);
result.PupilDiaY = Convert.ToSingle(data.rightEye.diam);
return(result);
}
public void GazeDataThreadProc()
{
while (!_terminating)
{
EyeTrackingController.SampleStruct sampleData = new EyeTrackingController.SampleStruct();
if (_eyeTracker.iV_GetSample(ref sampleData) != (int)EyeTrackingController.RetCode.Success)
{
Thread.Sleep(_sleepTime);
continue;
}
EventHandler <GazeEventArgs> handler = GazeEvent;
if (handler != null)
{
GazeEventArgs gazeEventArgs = new GazeEventArgs(sampleData.leftEye.gazeX,
sampleData.leftEye.gazeY,
sampleData.timestamp / 1000,
Fixation.Unknown,
false);
handler(this, gazeEventArgs);
}
Thread.Sleep(_sleepTime);
}
}
public void testExtractTrackerDataRightEyeZero()
{
EyeTrackingController.SampleStruct testdata = getTestdata();
testdata.leftEye.gazeX = 10;
testdata.leftEye.gazeY = 10;
testdata.rightEye.gazeX = 0;
testdata.rightEye.gazeY = 0;
GazeData gazeData = cut.ExtractTrackerData(testdata);
Assert.IsNotNull(gazeData);
assertEqualDecimal(5f, gazeData.GazePosX);
assertEqualDecimal(5f, gazeData.GazePosY);
}
public void testExtractTrackerDataWithZeroValues()
{
EyeTrackingController.SampleStruct testdata = getTestdata();
testdata.rightEye.gazeX = 0;
testdata.rightEye.gazeY = 0;
testdata.leftEye.gazeX = 0;
testdata.leftEye.gazeY = 0;
GazeData gazeData = cut.ExtractTrackerData(testdata);
Assert.IsNotNull(gazeData);
Assert.AreEqual(0, gazeData.GazePosX);
Assert.AreEqual(0, gazeData.GazePosY);
}
/// <summary>
/// Gets the sample callback function.
/// </summary>
/// <param name="sampleData">The sample data.</param>
void GetSampleCallbackFunction(EyeTrackingController.SampleStruct sampleData)
{
string data = ("Data from SampleCallback - timestamp: " + sampleData.timestamp.ToString() +
" - GazeRX: " + sampleData.rightEye.gazeX.ToString() +
" - GazeRY: " + sampleData.rightEye.gazeY.ToString() +
" - GazeLX: " + sampleData.leftEye.gazeX.ToString() +
" - GazeLY: " + sampleData.leftEye.gazeY.ToString() +
" - DiamRX: " + sampleData.rightEye.diam.ToString() +
" - DiamLX: " + sampleData.leftEye.diam.ToString() +
" - DistanceR: " + sampleData.rightEye.eyePositionZ.ToString() +
" - DistanceL: " + sampleData.leftEye.eyePositionZ.ToString());
//log("GetSampleCallbackFunction: " + data);
if (listener != null)
{
listener.onSampleData(sampleData);
}
}
/// <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);
}
}
protected EyeTrackingController.SampleStruct getTestdata()
{
EyeTrackingController.SampleStruct testdata = new EyeTrackingController.SampleStruct();
testdata.leftEye.diam = 10;
testdata.leftEye.eyePositionX = 2;
testdata.leftEye.eyePositionY = 3;
testdata.leftEye.eyePositionZ = 4;
testdata.rightEye.diam = 10;
testdata.rightEye.eyePositionX = 8;
testdata.rightEye.eyePositionY = 9;
testdata.rightEye.eyePositionZ = 10;
testdata.leftEye.gazeX = 10;
testdata.leftEye.gazeY = 10;
testdata.rightEye.gazeX = 20;
testdata.rightEye.gazeY = 10;
testdata.planeNumber = 13;
testdata.timestamp = 12340000;
return(testdata);
}
