void TryCreateOneFingerGestureOnTouchBegan(Func <CommonTouch, T> createGestureFunction)
{
foreach (var touch in GestureTouchesUtility.touches)
{
if (touch.isPhaseBegan &&
!GestureTouchesUtility.IsFingerIdRetained(touch.fingerId) &&
!GestureTouchesUtility.IsTouchOffScreenEdge(touch))
{
var gesture = createGestureFunction(touch);
AddGesture(gesture);
}
}
}
/// <summary>
/// Helper function for creating one finger gestures when a touch begins.
/// </summary>
/// <param name="createGestureFunction">Function to be executed to create the gesture.</param>
protected internal void TryCreateOneFingerGestureOnTouchBegan(
Func <Touch, T> createGestureFunction)
{
for (int i = 0; i < GestureTouchesUtility.Touches.Length; i++)
{
Touch touch = GestureTouchesUtility.Touches[i];
if (touch.phase == TouchPhase.Began &&
!GestureTouchesUtility.IsFingerIdRetained(touch.fingerId) &&
!GestureTouchesUtility.IsTouchOffScreenEdge(touch))
{
T gesture = createGestureFunction(touch);
gesture.onStart += OnStart;
gesture.onFinished += OnFinished;
m_Gestures.Add(gesture);
}
}
}
void TryCreateGestureTwoFingerGestureOnTouchBeganForTouchIndex(
int touchIndex,
Func <Touch, Touch, T> createGestureFunction)
{
if (GestureTouchesUtility.Touches[touchIndex].phase != TouchPhase.Began)
{
return;
}
var touch = GestureTouchesUtility.Touches[touchIndex];
if (GestureTouchesUtility.IsFingerIdRetained(touch.fingerId) ||
GestureTouchesUtility.IsTouchOffScreenEdge(touch))
{
return;
}
for (var i = 0; i < GestureTouchesUtility.Touches.Length; i++)
{
if (i == touchIndex)
{
continue;
}
// Prevents the same two touches from creating two gestures if both touches began on
// the same frame.
if (i < touchIndex && GestureTouchesUtility.Touches[i].phase == TouchPhase.Began)
{
continue;
}
var otherTouch = GestureTouchesUtility.Touches[i];
if (GestureTouchesUtility.IsFingerIdRetained(otherTouch.fingerId) ||
GestureTouchesUtility.IsTouchOffScreenEdge(otherTouch))
{
continue;
}
var gesture = createGestureFunction(touch, otherTouch);
gesture.onStart += OnStart;
gesture.onFinished += OnFinished;
m_Gestures.Add(gesture);
}
}
void TryCreateGestureTwoFingerGestureOnTouchBeganForTouchIndex(
int touchIndex,
IReadOnlyList <CommonTouch> touches,
Func <CommonTouch, CommonTouch, T> createGestureFunction)
{
var touch = touches[touchIndex];
if (!touch.isPhaseBegan ||
GestureTouchesUtility.IsFingerIdRetained(touch.fingerId) ||
GestureTouchesUtility.IsTouchOffScreenEdge(touch))
{
return;
}
for (var i = 0; i < touches.Count; i++)
{
if (i == touchIndex)
{
continue;
}
var otherTouch = touches[i];
// Prevents the same two touches from creating two gestures if both touches began on
// the same frame.
if (i < touchIndex && otherTouch.isPhaseBegan)
{
continue;
}
if (GestureTouchesUtility.IsFingerIdRetained(otherTouch.fingerId) ||
GestureTouchesUtility.IsTouchOffScreenEdge(otherTouch))
{
continue;
}
var gesture = createGestureFunction(touch, otherTouch);
AddGesture(gesture);
}
}