private void OnPressedSecond(PointerInput input, double time)
{
_pinching = true;
_secondPressed = true;
_pinchPosStartFirst = _posLastFirst;
_pinchPosStartSecond = input.Position;
_posLastSecond = _pinchPosStartSecond;
_pinchStartDistance = Vector2.Distance(_pinchPosStartFirst, _pinchPosStartSecond);
_pinchLastDistance = _pinchStartDistance;
PinchStarted?.Invoke(new PinchInput()
{
InputId = input.InputId,
PinchDeltaDistance = 0,
PinchDistance = _pinchStartDistance,
Pointer0CurrentPosition = _pinchPosStartFirst,
Pointer0StartPosition = _pinchPosStartFirst,
Pointer1CurrentPosition = _pinchPosStartSecond,
Pointer1StartPosition = _pinchPosStartSecond
});
}
private void OnDraggedFirst(PointerInput input, double time)
{
if (!activeGestures.TryGetValue(input.InputId, out var existingGesture))
{
// Probably caught by UI, or the input was otherwise lost
return;
}
existingGesture.SubmitPoint(input.Position, time);
if (IsValidSwipe(ref existingGesture))
{
PotentiallySwiped?.Invoke(new SwipeInput(existingGesture));
}
_posLastFirst = input.Position;
if (_pinching)
{
OnPinch(input);
}
DebugInfo(existingGesture);
}
private void OnPressedFirst(PointerInput input, double time)
{
Debug.Assert(!activeGestures.ContainsKey(input.InputId));
var newGesture = new ActiveGesture(input.InputId, input.Position, time);
activeGestures.Add(input.InputId, newGesture);
DebugInfo(newGesture);
_posLastFirst = input.Position;
if (_secondPressed)
{
_pinching = true;
_pinchPosStartFirst = _posLastFirst;
_pinchPosStartSecond = _posLastSecond;
_pinchStartDistance = Vector2.Distance(_pinchPosStartFirst, _pinchPosStartSecond);
_pinchLastDistance = _pinchStartDistance;
PinchStarted?.Invoke(new PinchInput()
{
InputId = input.InputId,
PinchDeltaDistance = 0,
PinchDistance = _pinchStartDistance,
Pointer0CurrentPosition = _pinchPosStartFirst,
Pointer0StartPosition = _pinchPosStartFirst,
Pointer1CurrentPosition = _pinchPosStartSecond,
Pointer1StartPosition = _pinchPosStartSecond
});
}
PressedFirst?.Invoke(new SwipeInput(newGesture));
}
