private bool TryGetLastGazePoints(out IEnumerable <GazePoint> gazePoints)
{
if (!IsInitialized)
{
gazePoints = new List <GazePoint>();
return(false);
}
if (_useMouseEmulation)
{
var host = EyeTrackingHost.GetInstance() as EyeTrackingHost;
if (host)
{
var gazePoint = new GazePoint(Input.mousePosition, (double)Time.time / 1000.0f, Time.time);
gazePoints = new List <GazePoint>()
{
gazePoint
};
return(true);
}
}
gazePoints = _gazePointDataProvider.GetDataPointsSince(_lastHandledGazePoint);
UpdateLastHandledGazePoint(gazePoints);
return(gazePoints.Any());
}
//--------------------------------------------------------------------
// Singleton Accessor
//--------------------------------------------------------------------
/// <summary>
/// Gets the singleton EyeTrackingHost instance.
/// Always use this method to access the EyeTrackingHost
/// </summary>
/// <returns>The instance.</returns>
public static IEyeTrackingHost GetInstance()
{
if (_isShuttingDown)
{
return(new EyeTrackingHostStub());
}
if (_instance == null)
{
// create a game object with a new instance of this class attached as a component.
// (there's no need to keep a reference to the game object, because game objects are not garbage collected.)
var container = new GameObject("EyeTrackingHostContainer");
DontDestroyOnLoad(container);
_instance = (EyeTrackingHost)container.AddComponent(typeof(EyeTrackingHost));
}
return(_instance);
}
private bool TryGetGazePoint(out GazePoint gazePoint)
{
if (!IsInitialized)
{
gazePoint = GazePoint.Invalid;
return(false);
}
if (_useMouseEmulation)
{
var host = EyeTrackingHost.GetInstance() as EyeTrackingHost;
if (host)
{
gazePoint = new GazePoint(Input.mousePosition, (double)Time.time / 1000.0f, Time.time);
return(true);
}
}
gazePoint = GetLastGazePoint();
return(gazePoint.IsWithinScreenBounds);
}
} // TODO: make internal?
//---------------------------------------------------------------------
// Private methods
//---------------------------------------------------------------------
private void Initialize()
{
if (_gazePointDataProvider == null)
{
ReloadSettings();
_gazePointDataProvider = EyeTrackingHost.GetInstance().GetGazePointDataProvider();
_gazePointDataProvider.Start(_identifier.GetInstanceID());
}
if (Scorer == null)
{
//Scorer = new SingleRayCastNoScore();
Scorer = new SingleRaycastHistoricHitScore();
//Scorer = new MultiRaycastHistoricHitScore();
}
if (_multiScorer == null)
{
_multiScorer = new MultiRaycastHistoricHitScore();
}
_isInitialized = true;
}
private IRegisterGazeFocusable GazeFocusHandler()
{
return((IRegisterGazeFocusable)EyeTrackingHost.GetInstance().GazeFocus);
}