/// <summary>
/// Process just-released touches and call triggered
/// event delegates as part of Update.
/// </summary>
/// <param name='id'>
/// The id of the relevant touch
/// </param>
/// <param name='position'>
/// The position of the relevant touch
/// </param>
private void ProcessTouchUp(int id, Vector2 position)
{
ArTouch touch = GetTouch(id);
// If this touch has not been added yet,
// add it then remove it.
// NOTE: (jonagill) Does adding and removing a touch in the same step
// ever cause trouble?
if (touch == null)
{
Debug.LogWarning("Tried to remove touch " + id + " before adding it.");
ProcessTouchDown(id, position);
touch = GetTouch(id);
}
// Store age for event processing
float touchAge = touch.GetAge();
// If a touch hasn't moved and is young enough, throw any assigned tap events
if (!touch.hasMoved && touchAge <= TAP_MAXTIME)
{
// If the touch is near enough to a recent tap's location, throw any
// assigned double tap events
// NOTE: (jonagill) To prevent this touch throwing a basic tap
// event as well, set touch.isDead in the double callback function
bool doubleTap = false;
foreach (ArTouch oldTap in _recentTaps)
{
if ((oldTap.position - touch.position).sqrMagnitude <= _doubleTapMaxSqdist)
{
if (OnDoubleTap != null && !touch.isDead)
{
OnDoubleTap(ref touch);
_recentTaps.Remove(oldTap);
doubleTap = true;
// Break because we don't want to trigger OnDoubleTap multiple times
// if it's near multiple old taps
break;
}
}
}
// Throw any assigned tap events
if (OnTap != null && !touch.isDead)
{
OnTap(ref touch);
}
// Add this touch to the list of recent taps
// if not used on a double tap (otherwise we enter
// every tap on that spot will count as a double
if (!doubleTap)
{
_recentTaps.Add(touch);
}
}
// If a touch has moved and is young enough, throw any assigned flick events
else if (touch.hasMoved && touchAge <= FLICK_MAXTIME)
{
if (OnFlick != null && !touch.isDead)
{
OnFlick(ref touch);
}
}
// Call any assigned functions for generic TouchUp events
if (OnTouchUp != null && !touch.isDead)
{
OnTouchUp(ref touch);
}
// Remove the touch from our references
if (id == ArTouch.MOUSE_ID)
{
_mouseTouch = null;
}
else
{
_touches.Remove(touch);
}
}
/// <summary>
/// Process existing touches and call triggered
/// event delegates as part of Update.
/// </summary>
/// <param name='id'>
/// The id of the relevant touch
/// </param>
/// <param name='position'>
/// The position of the relevant touch
/// </param>
private void ProcessTouchUpdate(int id, Vector2 position)
{
ArTouch touch = GetTouch(id);
// If this touch has not been added yet, add it instead of updating
if (touch == null)
{
Debug.LogWarning("Tried to update touch " + id + " before adding it.");
ProcessTouchDown(id, position);
return;
}
// Only update the touch's position if it has moved a significant distance
Vector2 moveDelta = position - touch.position;
bool moved = (moveDelta.sqrMagnitude >= _registerMoveSqdist);
if (moved)
{
touch.deltaPosition = moveDelta;
touch.position = position;
}
// If touch hasn't moved far enough to throw move events yet, check if it has now
if (!touch.hasMoved)
{
if ((touch.position - touch.startPosition).sqrMagnitude >= _startMoveSqdist)
{
touch.hasMoved = true;
}
}
// Store age for event checks
float touchAge = touch.GetAge();
// If it still hasn't moved, see if it should throw any assigned press events
if (!touch.hasMoved && touchAge > PRESS_MINTIME)
{
if (OnPress != null && !touch.isDead)
{
OnPress(ref touch);
}
}
// If it has moved far enough to throw move events, process that
else if (touch.hasMoved && moved)
{
// If we're not still waiting for flicks, throw any assigned drag events
if (touchAge > DRAG_MINTIME)
{
if (OnDrag != null && !touch.isDead)
{
OnDrag(ref touch);
}
}
// Throw any assigned generic touch move events
if (OnTouchMove != null && !touch.isDead)
{
OnTouchMove(ref touch);
}
}
}