add

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

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+using UnityEngine;
+
+/// <summary>
+/// Placing this script on the game object will make that game object pan with mouse movement.
+/// </summary>
+
+[AddComponentMenu("NGUI/Examples/Pan With Mouse")]
+public class PanWithMouse : MonoBehaviour
+{
+	public Vector2 degrees = new Vector2(5f, 3f);
+	public float range = 1f;
+
+	Transform mTrans;
+	Quaternion mStart;
+	Vector2 mRot = Vector2.zero;
+
+	void Start ()
+	{
+		mTrans = transform;
+		mStart = mTrans.localRotation;
+	}
+
+	void Update ()
+	{
+		float delta = RealTime.deltaTime;
+		Vector3 pos = Input.mousePosition;
+
+		float halfWidth = Screen.width * 0.5f;
+		float halfHeight = Screen.height * 0.5f;
+		if (range < 0.1f) range = 0.1f;
+		float x = Mathf.Clamp((pos.x - halfWidth) / halfWidth / range, -1f, 1f);
+		float y = Mathf.Clamp((pos.y - halfHeight) / halfHeight / range, -1f, 1f);
+		mRot = Vector2.Lerp(mRot, new Vector2(x, y), delta * 5f);
+
+		mTrans.localRotation = mStart * Quaternion.Euler(-mRot.y * degrees.y, mRot.x * degrees.x, 0f);
+	}
+}