/// <summary>
/// Connects to eyetracker and subscribes to events. Events are received on background thread.
/// </summary>
public void Connect()
{
try
{
eyetracker = EyetrackerFactory.CreateEyetracker(info, EventThreadingOptions.BackgroundThread);
// subscribe to eyetracker events
eyetracker.ConnectionError += ConnectionError;
foreach (EventHandler <FramerateChangedEventArgs> handler in framerateChangedHandlers)
{
eyetracker.FramerateChanged += handler;
}
foreach (EventHandler <GazeDataEventArgs> handler in gazeDataHandlers)
{
eyetracker.GazeDataReceived += handler;
}
eyetracker.StartTracking();
}
catch (EyetrackerException ee)
{
Disconnect();
if (ee.ErrorCode == 0x20000402)
{
throw new Exception("Failed to upgrade protocol. Upgrade firmware to version 2.0.0 or higher.", ee);
}
throw ee;
}
catch (Exception e)
{
Disconnect();
throw e;
}
}
// establich connection to eyetracker device
private void ConnectToTrackerAndStartTracking(EyetrackerInfo info)
{
try
{
if (FEyetracker == null)
{
// get tracker representation from EyetrackerInfo
FEyetracker = EyetrackerFactory.CreateEyetracker(info);
}
FEyetracker.ConnectionError -= HandleConnectionError;
// Trigger device-status-update event for IS1Node
UpdateDeviceStatus(FTrackerInfo.Status);
FConnectionName = info.ProductId;
if (FSyncManager == null)
{
FSyncManager = new SyncManager(FClock, info);
FSyncManager.SyncStateChanged += HandleSyncStateChanged;
}
SyncState st = FSyncManager.SyncState;
if (st.StateFlag == SyncStateFlag.Unsynchronized)
{
// TODO: handle the case that eyetracker is unsynchronized to make sure that et-status gets OK
}
// register eventhandlers
FEyetracker.ConnectionError += HandleConnectionError;
// trigger device-status-update event for IS1Node
UpdateDeviceStatus(FTrackerInfo.Status);
}
catch (EyetrackerException ee)
{
if (ee.ErrorCode == 0x20000402)
{
// trigger custom-error event for IS1Node
OnCustomError("EyetrackerException occured (errorCode " + ee.ErrorCode.ToString() + ") - Failed to upgrade protocol." +
"This probably means that the firmware needs to be upgraded to a version that supports the new sdk.");
}
else
{
// trigger custom-error event for IS1Node
OnCustomError("EyetrackerException occured (errorCode " + ee.ErrorCode.ToString() + ") - Eyetracker responded with error" + ee);
}
DisconnectEyetracker(false);
}
catch (Exception e)
{
// trigger custom-error event for IS1Node
OnCustomError("Could not connect to eyetracker. " + "Connection failed" + "(" + e.Message + ")");
DisconnectEyetracker(false);
}
}
/// <summary>
/// This methods connects to the tracker.
/// </summary>
/// <param name="info">
/// A <see cref="EyetrackerInfo"/>with information about the
/// eyetracker to connect to.
/// </param>
private void ConnectToTracker(EyetrackerInfo info)
{
try
{
connectedTracker = EyetrackerFactory.CreateEyetracker(info);
connectedTracker.ConnectionError += this.HandleConnectionError;
this.tobiiSettings.ConnectedTrackerName = connectedTracker.GetUnitName();
this.tobiiClock = new Clock();
this.syncManager = new SyncManager(this.tobiiClock, info);
connectedTracker.GazeDataReceived += this.ConnectedTrackerGazeDataReceived;
connectedTracker.StartTracking();
}
catch (EyetrackerException ee)
{
if (ee.ErrorCode == 0x20000402)
{
MessageBox.Show(
Resources.TobiiTracker_ConnectToTrackerFailed,
"Upgrade Failed",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
}
else
{
MessageBox.Show("Eyetracker responded with error " + ee, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
this.DisconnectTracker();
}
catch (Exception)
{
MessageBox.Show(
"Could not connect to eyetracker.",
"Connection Failed",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
this.DisconnectTracker();
}
}
/// <summary>
/// Connects to eyetracker and subscribes to events. Events are received on background thread.
/// </summary>
public void Connect()
{
try
{
eyetracker = EyetrackerFactory.CreateEyetracker(info, EventThreadingOptions.BackgroundThread);
eyetracker.ConnectionError += ConnectionError;
eyetracker.StartTracking();
}
catch (EyetrackerException ee)
{
Disconnect();
if (ee.ErrorCode == 0x20000402)
{
throw new Exception("Failed to upgrade protocol. Upgrade firmware to version 2.0.0 or higher.", ee);
}
throw ee;
}
catch (Exception e)
{
Disconnect();
throw e;
}
}
// called when data for any output pin is requested
public void Evaluate(int SpreadMax)
{
if (FInit)
{
FEyetrackerInfoIn.Changed += new SpreadChangedEventHander <EyetrackerInfo>(FEyetrackerInfo_Changed);
}
if (!FXConfigSetToOutput && FUpdateIn.IsChanged && FUpdateIn[0] == true)
{
ReadAndOutputXConfig();
}
// Enabled true
if ((FConnectionChanged || FEnable.IsChanged) && FEnable[0] == true)
{
try
{
if (FEyetrackerInfo != null)
{
FEyetrackerOut.SliceCount = FEyetrackerInfoIn.SliceCount;
if (FSyncManager == null)
{
FClock = new Clock();
FSyncManager = new SyncManager(FClock, FEyetrackerInfo);
FSyncManager.SyncManagerError += new EventHandler(FSyncManager_SyncManagerError);
FSyncManager.SyncStateChanged += new EventHandler <SyncStateChangedEventArgs>(FSyncManager_SyncStateChanged);
}
if (FEyetracker == null)
{
// get tracker representation from EyetrackerInfo
FEyetracker = EyetrackerFactory.CreateEyetracker(FEyetrackerInfo);
FEyetracker.ConnectionError += new EventHandler <ConnectionErrorEventArgs>(FEyetracker_ConnectionError);
FEyetracker.XConfigurationChanged += new EventHandler <XConfigurationChangedEventArgs>(FEyetracker_XConfigurationChanged);
FEyetracker.FramerateChanged += new EventHandler <FramerateChangedEventArgs>(FEyetracker_FramerateChanged);
FEyetrackerOut[0] = FEyetracker;
ReadAndOutputXConfig();
}
}
}
catch (EyetrackerException ex)
{
if (ex.ErrorCode == 0x20000402)
{
// trigger custom-error event for IS1Node
FLogger.Log(LogType.Error, "EyetrackerException occured (errorCode " + ex.ErrorCode.ToString() + ") - Failed to upgrade protocol." +
"This probably means that the firmware needs to be upgraded to a version that supports the new sdk.");
}
else
{
FLogger.Log(LogType.Error, "Error Code: " + ex.ErrorCode + " Message: " + ex.Message);
}
}
catch (Exception e)
{
FLogger.Log(LogType.Error, "Could not connect to eyetracker. " + "Connection failed" + "(" + e.Message + ")");
}
}
// Enabled false
else if ((FConnectionChanged || FEnable.IsChanged) && FEnable[0] == false)
{
// disconnect and stop eye tracker correctly
if (FEyetracker != null)
{
FEyetracker.ConnectionError -= new EventHandler <ConnectionErrorEventArgs>(FEyetracker_ConnectionError);
FEyetracker.Dispose();
FEyetracker = null;
FEyetrackerOut.SliceCount = 1;
}
if (FSyncManager != null)
{
FSyncManager.SyncManagerError -= new EventHandler(FSyncManager_SyncManagerError);
FSyncManager.SyncStateChanged -= new EventHandler <SyncStateChangedEventArgs>(FSyncManager_SyncStateChanged);
FSyncManager.Dispose();
FSyncManager = null;
FClock = null;
}
frameCount = 0;
noXConfCount = 0;
}
// input params changed
if (FSyncManager != null && FEyetracker != null)
{
if (FFramerateIn.IsChanged)
{
FEyetracker.SetFramerate(FFramerateIn[0]);
}
if (FUpdateIn.IsChanged && FUpdateIn[0] == true)
{
FSerial[0] = FEyetracker.GetUnitInfo().SerialNumber;
IList <float> Framerate = FEyetracker.EnumerateFramerates();
FFramerates.SliceCount = Framerate.Count;
if (Framerate.Count == 1)
{
FCurrentFramerate[0] = Framerate[0];
}
for (int i = 0; i < Framerate.Count; i++)
{
FFramerates[i] = Framerate[i];
}
try
{
IList <string> IlluminationModes = FEyetracker.EnumerateIlluminationModes();
FIlluminationMode.SliceCount = IlluminationModes.Count;
for (int i = 0; i < IlluminationModes.Count; i++)
{
FIlluminationMode[i] = IlluminationModes[i];
}
}
catch (EyetrackerException ex)
{
FLogger.Log(LogType.Error, "Could not set illumination mode, " + ex.Message);
}
XConfiguration x = FEyetracker.GetXConfiguration();
FLowerLeft[0] = new Vector3D(x.LowerLeft.X, x.LowerLeft.Y, x.LowerLeft.Z) * 0.1;
FUpperLeft[0] = new Vector3D(x.UpperLeft.X, x.UpperLeft.Y, x.UpperLeft.Z) * 0.1;
FUpperRight[0] = new Vector3D(x.UpperRight.X, x.UpperRight.Y, x.UpperRight.Z) * 0.1;
}
if (FXConfigurationIn.IsChanged)
{
try
{
if (FXConfigurationIn[0] != null)
{
FEyetracker.SetXConfiguration(FXConfigurationIn[0]);
}
}
catch (Exception ee)
{
FLogger.Log(LogType.Error, "Could not set XConfiguration, " + ee.Message);
}
}
}
if (FConnectionChanged && FEyetrackerInfo == null)
{
// Eyetracker has been disconnected, (recognized by error)
}
if (FEyetrackerInfoIn.IsChanged)
{
}
FConnectionChanged = false;
FInit = false;
}