protected override void AddGestureEventToCurrentList(GestureState state)
{
var deltaTrans = currPosition - lastPosition;
CurrentGestureEvents.Add(new GestureEventDrag(state, ConfigDrag.RequiredNumberOfFingers, ElapsedSinceLast, ElapsedSinceBeginning, ConfigDrag.DragShape,
NormalizeVector(startPosition), NormalizeVector(currPosition), NormalizeVector(deltaTrans)));
lastPosition = currPosition;
base.AddGestureEventToCurrentList(state);
}
protected override void ProcessPointerEventsImpl(TimeSpan deltaTime, List <PointerEvent> events)
{
AnalysePointerEvents(events);
if (HasGestureStarted && ElapsedSinceBeginning >= ConfigLongPress.RequiredPressTime)
{
var avgPosition = ComputeMeanPosition(FingerIdToBeginPositions.Values);
CurrentGestureEvents.Add(new GestureEventLongPress(ConfigLongPress.RequiredNumberOfFingers, ElapsedSinceBeginning, NormalizeVector(avgPosition)));
HasGestureStarted = false;
}
}
protected override void AddGestureEventToCurrentList(GestureState state)
{
var deltaRotation = currentRotation - lastRotation;
var deltaScale = currentScale - lastScale;
CurrentGestureEvents.Add(new GestureEventComposite(state, ElapsedSinceLast, ElapsedSinceBeginning, deltaRotation, currentRotation, deltaScale, currentScale,
NormalizeVector(beginCenter), NormalizeVector(lastCenter), NormalizeVector(currentCenter)));
lastRotation = currentRotation;
lastScale = currentScale;
lastCenter = currentCenter;
base.AddGestureEventToCurrentList(state);
}
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 ProcessMoveEventPointers(Dictionary <int, Vector2> fingerIdsToMovePos)
{
if (!HasGestureStarted)
{
return;
}
foreach (var id in fingerIdsToMovePos.Keys)
{
var newPos = fingerIdsToMovePos[id];
// check that the shape of the flick is respected, stop the gesture if it is not the case
if (ConfigFlick.FlickShape != GestureShape.Free)
{
var compIndex = ConfigFlick.FlickShape == GestureShape.Horizontal ? 1 : 0;
if (Math.Abs(newPos[compIndex] - FingerIdToBeginPositions[id][compIndex]) > ConfigFlick.AllowedErrorMargins[compIndex])
{
HasGestureStarted = false;
}
}
// Update the last position of the finger
FingerIdsToLastPos[id] = newPos;
}
if (HasGestureStarted)
{
// trigger the event if the conditions are fulfilled
var startPos = ComputeMeanPosition(FingerIdToBeginPositions.Values);
var currPos = ComputeMeanPosition(FingerIdsToLastPos.Values);
var translDist = (currPos - startPos).Length();
if (translDist > ConfigFlick.MinimumFlickLength && translDist / ElapsedSinceBeginning.TotalSeconds > ConfigFlick.MinimumAverageSpeed)
{
var evt = CurrentGestureEvents.Add() as GestureEventFlick;
evt.Set(ConfigFlick.RequiredNumberOfFingers, ElapsedSinceBeginning, ConfigFlick.FlickShape, NormalizeVector(startPos), NormalizeVector(currPos));
HasGestureStarted = false;
}
}
}