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);
}
}
private void OnEyeTrackerGazeData(object sender, GazeDataEventArgs e)
{
EventHandler <GazeEventArgs> handler = GazeEvent;
if (handler != null)
{
Point2D gazePoint;
var gazeData = e.GazeData;
switch (gazeData.TrackingStatus)
{
case TrackingStatus.BothEyesTracked:
gazePoint = new Point2D((gazeData.Left.GazePointOnDisplayNormalized.X + gazeData.Right.GazePointOnDisplayNormalized.X) / 2.0,
(gazeData.Left.GazePointOnDisplayNormalized.Y + gazeData.Right.GazePointOnDisplayNormalized.Y) / 2.0);
break;
case TrackingStatus.OnlyLeftEyeTracked:
case TrackingStatus.OneEyeTrackedProbablyLeft:
gazePoint = gazeData.Left.GazePointOnDisplayNormalized;
break;
case TrackingStatus.OnlyRightEyeTracked:
case TrackingStatus.OneEyeTrackedProbablyRight:
gazePoint = gazeData.Right.GazePointOnDisplayNormalized;
break;
default:
return;
}
GazeEventArgs gazeEventArgs = new GazeEventArgs(gazePoint.X, gazePoint.Y, gazeData.Timestamp / 1000, Fixation.Unknown, true);
handler(this, gazeEventArgs);
}
}
private void GazeDataReaderProc()
{
string line = null;
GazeEventArgs ea = null;
long curTimeStamp = 0;
line = _gazeDataReader.ReadLine();
if (line != null)
{
ea = ParseGazeEventArgs(line);
if (ea != null)
{
curTimeStamp = ea.Timestamp;
}
}
Thread.Sleep(2000);
RaiseGazeEvent(ea);
while ((!_terminating) && ((line = _gazeDataReader.ReadLine()) != null))
{
ea = ParseGazeEventArgs(line);
if (ea == null)
{
continue;
}
Thread.Sleep((int)(ea.Timestamp - curTimeStamp));
curTimeStamp = ea.Timestamp;
RaiseGazeEvent(ea);
}
}
public void dataCallback(
long timestamp,
float mouseX,
float mouseY,
float mouseRawX,
float pogRawY,
int screenWidth,
int screenHeight,
[MarshalAs(UnmanagedType.U1)] bool leftEyeDetected,
[MarshalAs(UnmanagedType.U1)] bool rightEyeDetected,
int imageWidth,
int imageHeight,
float leftEyeX,
float leftEyeY,
float leftEyeSize,
float rightEyeX,
float rightEyeY,
float rightEyeSize,
float distanceFactor)
{
var eventData = new GazeEventArgs(
mouseX,
mouseY,
Environment.TickCount, Fixation.Unknown, false);
_gazeEvent?.Invoke(this, eventData);
}
private void RaiseGazeEvent(GazeEventArgs ea)
{
EventHandler <GazeEventArgs> handler = GazeEvent;
if (handler != null)
{
handler(this, ea);
}
}
void RaiseGazeEvent(double x, double y, double timestamp)
{
EventHandler <GazeEventArgs> handler = GazeEvent;
if (handler != null)
{
GazeEventArgs gazeEventArgs = new GazeEventArgs(x, y, (long)timestamp, Fixation.Unknown, false);
handler(this, gazeEventArgs);
}
}
private GazeEventArgs ParseGazeEventArgs(string line)
{
string[] parts = line.Split(',');
if (parts.Length != 3)
{
return(null);
}
double x = double.Parse(parts[0]);
double y = double.Parse(parts[1]);
long t = long.Parse(parts[2]);
GazeEventArgs ea = new GazeEventArgs(x, y, t, Fixation.Unknown, true);
return(ea);
}
void MouseTick(object sender, EventArgs e)
{
try
{
var window = Application.Current.MainWindow;
var windowPoint = Mouse.GetPosition(window);
var point = window.PointToScreen(windowPoint);
var eventData = new GazeEventArgs(point.X, point.Y, Environment.TickCount, Fixation.Unknown, false);
_gazeEvent?.Invoke(this, eventData);
}
catch
{
// A Win32Exception is sometimes thrown Mouse.GetPosition; this try-catch block just lessens the impact of that.
}
}
void Tick(object sender, EventArgs e)
{
try
{
QuickLink2API.QLDevice_GetFrame(deviceId, (IntPtr)10000, ref frameData);
if (frameData.WeightedGazePoint.Valid)
{
var eventData = new GazeEventArgs(
frameData.WeightedGazePoint.x * System.Windows.Forms.Screen.PrimaryScreen.Bounds.Width / 100,
frameData.WeightedGazePoint.y * System.Windows.Forms.Screen.PrimaryScreen.Bounds.Height / 100,
Environment.TickCount,
Fixation.Unknown,
false
);
_gazeEvent?.Invoke(this, eventData);
}
}
catch
{
// A Win32Exception is sometimes thrown Mouse.GetPosition; this try-catch block just lessens the impact of that.
}
}
public GazeEventArgs(double x, double y, GazeEventArgs ea, bool scaled) :
this(x, y, ea.Timestamp, ea.Fixation, scaled)
{
}
