internal TapInput(ActiveGesture gesture) : this()
{
PressPosition = gesture.StartPosition;
ReleasePosition = gesture.EndPosition;
TapDuration = gesture.EndTime - gesture.StartTime;
TapDrift = gesture.TravelDistance;
TimeStamp = gesture.EndTime;
}
/// <summary>
/// Construct a new swipe input from a given gesture.
/// </summary>
internal SwipeInput(ActiveGesture gesture) : this()
{
InputId = gesture.InputId;
StartPosition = gesture.StartPosition;
PreviousPosition = gesture.PreviousPosition;
EndPosition = gesture.EndPosition;
SwipeDirection = (EndPosition - StartPosition).normalized;
SwipeDuration = gesture.EndTime - gesture.StartTime;
TravelDistance = gesture.TravelDistance;
SwipeSameness = gesture.SwipeDirectionSameness;
if (SwipeDuration > 0.0f)
{
SwipeVelocity = (float)(TravelDistance / SwipeDuration);
}
}
private void DebugInfo(ActiveGesture gesture)
{
if (label == null)
{
return;
}
var builder = new StringBuilder();
builder.AppendFormat("ID: {0}", gesture.InputId);
builder.AppendLine();
builder.AppendFormat("Start Position: {0}", gesture.StartPosition);
builder.AppendLine();
builder.AppendFormat("Position: {0}", gesture.EndPosition);
builder.AppendLine();
builder.AppendFormat("Duration: {0}", gesture.EndTime - gesture.StartTime);
builder.AppendLine();
builder.AppendFormat("Sameness: {0}", gesture.SwipeDirectionSameness);
builder.AppendLine();
builder.AppendFormat("Travel distance: {0}", gesture.TravelDistance);
builder.AppendLine();
builder.AppendFormat("Samples: {0}", gesture.Samples);
builder.AppendLine();
builder.AppendFormat("Realtime since startup: {0}", Time.realtimeSinceStartup);
builder.AppendLine();
builder.AppendFormat("Starting Timestamp: {0}", gesture.StartTime);
builder.AppendLine();
builder.AppendFormat("Ending Timestamp: {0}", gesture.EndTime);
builder.AppendLine();
label.text = builder.ToString();
var worldStart = Camera.main.ScreenToWorldPoint(gesture.StartPosition);
var worldEnd = Camera.main.ScreenToWorldPoint(gesture.EndPosition);
worldStart.z += 5;
worldEnd.z += 5;
}
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));
}
/// <summary>
/// Checks whether a given active gesture will be a valid tap.
/// </summary>
private bool IsValidTap(ref ActiveGesture gesture)
{
return(gesture.TravelDistance <= maxTapDrift &&
(gesture.StartTime - gesture.EndTime) <= maxTapDuration);
}
/// <summary>
/// Checks whether a given active gesture will be a valid swipe.
/// </summary>
private bool IsValidSwipe(ref ActiveGesture gesture)
{
return(gesture.TravelDistance >= minSwipeDistance &&
(gesture.StartTime - gesture.EndTime) <= maxSwipeDuration &&
gesture.SwipeDirectionSameness >= swipeDirectionSamenessThreshold);
}