FairyGUI.Stage.UpdateTouchPosition C# (CSharp) Method

		void UpdateTouchPosition()
		{
			if (_frameGotTouchPosition != Time.frameCount)
			{
				_frameGotTouchPosition = Time.frameCount;
				if (_customInput)
				{
					_touchPosition = _customInputPos;
					_touchPosition.y = stageHeight - _touchPosition.y;
				}
				else if (touchScreen)
				{
					for (int i = 0; i < Input.touchCount; ++i)
					{
						Touch uTouch = Input.GetTouch(i);
						_touchPosition = uTouch.position;
						_touchPosition.y = stageHeight - _touchPosition.y;
					}
				}
				else
				{
					Vector2 pos = Input.mousePosition;
					if (pos.x >= 0 && pos.y >= 0) //编辑器环境下坐标有时是负
					{
						pos.y = stageHeight - pos.y;
						_touchPosition = pos;
					}
				}
			}
		}