void AddTouchpoint(Vector2 pos, int id, int root)
{
if (!touchPoints.ContainsKey(id))
{
TouchPoint touchPoint = new TouchPoint(pos, id);
GameObject touchObject = Instantiate(touchPointPrefab);
touchObject.name = id.ToString();
touchObject.transform.SetParent(transform);
touchObject.transform.localPosition = pos;
string text = id.ToString();
touchObject.GetComponentInChildren <UnityEngine.UI.Text>().text = text;
touchPoint.SetGameObject(touchObject);
touchPoint.SetRootID(root);
touchPoints.Add(id, touchPoint);
}
}
