FairyGUI.Stage.GetHitTarget C# (CSharp) Method

		void GetHitTarget()
		{
			if (_frameGotHitTarget == Time.frameCount)
				return;

			_frameGotHitTarget = Time.frameCount;

			if (_customInput)
			{
				Vector2 pos = _customInputPos;
				pos.y = stageHeight - pos.y;

				TouchInfo touch = _touches[0];
				_touchTarget = HitTest(pos, true);
				touch.target = _touchTarget;
			}
			else if (touchScreen)
			{
				for (int i = 0; i < Input.touchCount; ++i)
				{
					Touch uTouch = Input.GetTouch(i);
					if (uTouch.phase == TouchPhase.Stationary)
						continue;

					Vector2 pos = uTouch.position;
					pos.y = stageHeight - pos.y;

					_touchTarget = null;
					TouchInfo touch = null;
					for (int j = 0; j < 5; j++)
					{
						if (_touches[j].touchId == uTouch.fingerId)
						{
							touch = _touches[j];
							break;
						}

						if (_touches[j].touchId == -1)
						{
							touch = _touches[j];
							//下面的赋值避免了touchMove在touchDown前触发
							touch.x = uTouch.position.x;
							touch.y = stageHeight - uTouch.position.y;
						}
					}
					if (touch == null)
						return;

					touch.touchId = uTouch.fingerId;
					DisplayObject ht = HitTest(pos, true);
					touch.target = ht;
					if (ht != null)
						_touchTarget = ht;
				}
			}
			else
			{
				Vector2 pos = Input.mousePosition;
				pos.y = stageHeight - pos.y;

				TouchInfo touch = _touches[0];
				if (pos.x < 0 || pos.y < 0)
				{
					pos.x = touch.x;
					pos.y = touch.y;
				}

				_touchTarget = HitTest(pos, true);
				touch.target = _touchTarget;
			}

			HitTestContext.ClearRaycastHitCache();
		}