public void AddRotationBefore(Transform t)
{
UIRotationOption inst = Instantiate(prefab, transform);
inst.transform.SetSiblingIndex(t.GetSiblingIndex() - 1);
rotations.Add(inst);
inst.gameObject.SetActive(true);
}
public void RemoveRotation(UIRotationOption option)
{
rotations.Remove(option);
Destroy(option.gameObject);
}