public EyeNavData(EyeTrackingDeviceStatus state, int timestamp, double x, double y)
{
this.state = getMappedState(state);
this.timestamp = timestamp;
this.x = x;
this.y = y;
}
void DeviceStatusHandler(object sender, EngineStateValue <EyeTrackingDeviceStatus> e)
{
_dispatcher.Invoke(() =>
{
_deviceStatus = GetDeviceStatus(e);
_semaphore.Release();
});
}
void StartStatusListening()
{
_semaphore = new SemaphoreSlim(0);
// Get initial status values.
_deviceStatus = GetDeviceStatus(_eyeXHost.EyeTrackingDeviceStatus);
_configurationStatus = GetConfigurationStatus(_eyeXHost.ConfigurationStatus);
// Start listening for changes.
_eyeXHost.EyeTrackingDeviceStatusChanged += DeviceStatusHandler;
_eyeXHost.ConfigurationStatusChanged += ConfigurationStatusHandler;
}
static bool IsSuccessDeviceStatus(EyeTrackingDeviceStatus status)
{
switch (status)
{
case EyeTrackingDeviceStatus.Initializing:
case EyeTrackingDeviceStatus.Configuring:
case EyeTrackingDeviceStatus.Tracking:
case EyeTrackingDeviceStatus.TrackingPaused:
return(true);
default:
return(false);
}
}
private int getMappedState(EyeTrackingDeviceStatus tobiiState)
{
switch (tobiiState)
{
case EyeTrackingDeviceStatus.Tracking:
return(1);
case EyeTrackingDeviceStatus.TrackingPaused:
case EyeTrackingDeviceStatus.TrackingUnavailable:
return(2);
default:
return(10);
}
}
static bool IsStableDeviceStatus(EyeTrackingDeviceStatus status)
{
return(IsSuccessDeviceStatus(status) || IsFailedDeviceStatus(status));
}
static bool IsFailedDeviceStatus(EyeTrackingDeviceStatus status)
{
return(status == EyeTrackingDeviceStatus.DeviceNotConnected);
}
