public WebBrowserAssistantEngine(Session session)
{
var experiment = _experiment = (WebBrowserAssistantExperiment)session.Experiment;
_server = new WebBrowserAssistantServer(session);
_server.AddMessageHandler(this);
if (!session.StreamerCollection.TryFindFirst(out _gazePointStreamer))
{
throw new UserException("Gaze-point streamer not found");
}
if (!session.StreamerCollection.TryFindFirst(out _biosignalStreamer))
{
throw new UserException("Biosignal streamer not found");
}
_gazePointProvider = new GazePointProvider();
_dwellTrialController = new DwellTrialController(session.Clock, _gazePointProvider, experiment.Config.User);
_dwellTrialController.Triggered += (sender, e) => _trialStartEvent.Set();
_dwellTrialController.Cancelled += (sender, e) => _trialCancelled.Set();
_ssvepDetector = new SsvepDetector(session.Clock, 4, Frequencies.Concat(ExtraFrequencies)
.Select(f => new CompositeTemporalPattern <SinusoidalPattern>(new SinusoidalPattern(f))).ToArray(), new[]
{
new SsvepDetector.BandpassFilter(12, 90),
new SsvepDetector.BandpassFilter(24, 90)
}, new SsvepDetector.FbccaSubBandMixingParams(1.25, 0.25), 2, 0,
experiment.Config.System.Channels.Enumerate(1, _biosignalStreamer.BiosignalSampler.ChannelNum).Select(i => (uint)(i - 1)).ToArray(),
_biosignalStreamer.BiosignalSampler.Frequency, experiment.Config.User.TrialDuration, 0);
}
public DwellTrialController(IClock clock, GazePointProvider gazePointProvider,
WebBrowserAssistantExperiment.Configuration.UserConfig userConfig)
{
_clock = clock;
_gazePointProvider = gazePointProvider;
_cancellable = userConfig.TrialCancellable;
_cursorMovementTolerance = userConfig.CursorMovementTolerance;
_dwellToSelectDelay = userConfig.DwellSelectionDelay;
Reset();
}
