private void UpdateFingerDictionaries(bool isKeyDown, int id, Vector2 pos)
{
if (isKeyDown)
{
FingerIdToBeginPositions[id] = pos;
FingerIdsToLastPos[id] = pos;
}
else
{
FingerIdToBeginPositions.Remove(id);
FingerIdsToLastPos.Remove(id);
}
}
private void EndCurrentTap()
{
// add the gesture to the tap event list if the number of tap requirement is fulfilled
if (currentNumberOfTaps == ConfigTap.RequiredNumberOfTaps)
{
var tapMeanPosition = ComputeMeanPosition(FingerIdToBeginPositions.Values);
CurrentGestureEvents.Add(new GestureEventTap(ElapsedSinceBeginning, ConfigTap.RequiredNumberOfFingers, currentNumberOfTaps, NormalizeVector(tapMeanPosition)));
}
currentNumberOfTaps = 0;
HasGestureStarted = false;
FingerIdToBeginPositions.Clear();
}
protected override void ProcessDownEventPointer(int id, Vector2 pos)
{
if (!FingerIdToBeginPositions.ContainsKey(id))
{
FingerIdToBeginPositions[id] = pos;
}
FingerIdsToLastPos[id] = pos;
maxNbOfFingerTouched = Math.Max(maxNbOfFingerTouched, NbOfFingerOnScreen);
isTapDown = true;
if (NbOfFingerOnScreen == 1)
{
elapsedSinceTakeOff = TimeSpan.Zero;
elapsedSinceDown = TimeSpan.Zero;
HasGestureStarted = true;
}
if (HasGestureStarted && maxNbOfFingerTouched > ConfigTap.RequiredNumberOfFingers)
{
EndCurrentTap();
}
if (HasGestureStarted && !HadFingerAtThatPosition(pos))
{
EndCurrentTap();
maxNbOfFingerTouched = NbOfFingerOnScreen;
elapsedSinceTakeOff = TimeSpan.Zero;
elapsedSinceDown = TimeSpan.Zero;
HasGestureStarted = true;
foreach (var key in FingerIdsToLastPos.Keys)
{
FingerIdToBeginPositions[key] = FingerIdsToLastPos[key];
}
}
}
protected override void ProcessUpEventPointer(int id, Vector2 pos)
{
FingerIdToBeginPositions.Remove(id);
HasGestureStarted = (NbOfFingerOnScreen == ConfigLongPress.RequiredNumberOfFingers);
}
