/// <summary>
/// gesture recognizer registration for the device
/// </summary>
/// <param name="adapter">The adapter.</param>
/// <returns>A gesture recognizer for recognizing gestures</returns>
private GestureRecognizer registerGestureRecognizer(AbstractBrailleIOAdapterBase adapter)
{
if (adapter != null)
{
var blobTracker = new BlobTracker();
var gestureRecognizer = new GestureRecognizer(blobTracker);
var tabClassifier = new TapClassifier();
var multitouchClassifier = new MultitouchClassifier();
// add several classifiers to interpret the tracked blobs
gestureRecognizer.AddClassifier(tabClassifier);
gestureRecognizer.AddClassifier(multitouchClassifier);
// start tracking fo blobs
blobTracker.InitiateTracking();
return(gestureRecognizer);
}
return(null);
}
private void initalizeGestureRecognition(BrailleIODevice device)
{
// gesture recognizer registration for the device
var blobTracker = new BlobTracker();
var gestureRecognizer = new GestureRecognizer(blobTracker);
//int c = 0;
// try to register blob tracker
blobTrackers.AddOrUpdate(device, blobTracker,
(key, existingBlobTracker) =>
{
// If this delegate is invoked, then the key already exists.
return blobTracker;
}
);
//while (!blobTrackers.TryAdd(device, blobTracker) && c++ < 20) { Thread.Sleep(5); };
//if (c > 19) throw new AccessViolationException("Cannot add blob tracker to dictionary - access denied");
// try to register gesture recognizer
gestureRecognizers.AddOrUpdate(device, gestureRecognizer,
(key, existingGestureRecognizer) =>
{
// If this delegate is invoked, then the key already exists.
if (existingGestureRecognizer != null)
{
existingGestureRecognizer.FinishEvaluation();
}
return gestureRecognizer;
}
);
//while (!gestureRecognizers.TryAdd(device, gestureRecognizer) && c++ < 40) { Thread.Sleep(5); };
//if (c > 39) throw new AccessViolationException("Cannot add gesture recognizer to dictionary - access denied");
var multitouchClassifier = new MultitouchClassifier();
var tabClassifier = new TapClassifier();
gestureRecognizer.AddClassifier(tabClassifier);
gestureRecognizer.AddClassifier(multitouchClassifier);
blobTracker.InitiateTracking();
}