private void Tick(object state)
{
var position = _gazePointHandler.CurrentPosition;
if (position == null)
{
Reset();
return;
}
var now = _clock.Time;
var button = _findButtonFunc(position.Value);
if (button != _previousHover)
{
_previousHover = button;
_hoverStartAt = now;
if (_cancellable && _inTrial)
{
_spellerController.CancelTrial();
Reset();
}
return;
}
if (button == null || _inTrial)
{
return;
}
if (_clock.Unit.ToMilliseconds(Math.Abs(now - _startAt)) < _minTrialInterval)
{
return;
}
if (_clock.Unit.ToMilliseconds(Math.Abs(now - _hoverStartAt)) < _hoverToSelectDuration)
{
return;
}
_inTrial = true;
_spellerController.CreateTrial();
}
public void Reset()
{
_startAt = _clock.Time;
_previousHover = null;
_inTrial = false;
}