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Assets/CoolapeFrame/3rd/NGUI_Enhance/Examples/Scripts/Other/LagRotation.cs

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+using UnityEngine;
+
+/// <summary>
+/// Attach to a game object to make its rotation always lag behind its parent as the parent rotates.
+/// </summary>
+
+[AddComponentMenu("NGUI/Examples/Lag Rotation")]
+public class LagRotation : MonoBehaviour
+{
+	public float speed = 10f;
+	public bool ignoreTimeScale = false;
+
+	Transform mTrans;
+	Quaternion mRelative;
+	Quaternion mAbsolute;
+
+	public void OnRepositionEnd ()
+	{
+		Interpolate(1000f);
+	}
+
+	void Interpolate (float delta)
+	{
+		if (mTrans != null)
+		{
+			Transform parent = mTrans.parent;
+
+			if (parent != null)
+			{
+				mAbsolute = Quaternion.Slerp(mAbsolute, parent.rotation * mRelative, delta * speed);
+				mTrans.rotation = mAbsolute;
+			}
+		}
+	}
+
+	void Start ()
+	{
+		mTrans = transform;
+		mRelative = mTrans.localRotation;
+		mAbsolute = mTrans.rotation;
+	}
+
+	void Update ()
+	{
+		Interpolate(ignoreTimeScale ? RealTime.deltaTime : Time.deltaTime);
+	}
+}