public static TweenRotation AddTween(GameObject target, Vector3 from, Vector3 to, float duration, Keyframe[] keys)
{
TweenRotation tweener = target.AddComponent <TweenRotation>();
tweener.Target = target;
tweener.From = from;
tweener.To = to;
tweener.Duration = duration;
tweener.Curve = new AnimationCurve();
tweener.Curve.keys = keys;
tweener.Initialise();
return(tweener);
}