Curve Rotate Script for Unity

using UnityEngine;
using System.Collections;

//use an animation curve to rotate an object on its Y axis
//someday will mod to include an axis selection

public class CurveRotate : MonoBehaviour {
    public AnimationCurve rotateCurve;  //curve to use for the angle (usually keeping the range 0-1 on both axis)
    public float offset;                //offset angle (start angle)
    public float rotateAmount;          //degrees to rotate
    public float rotateRate;            //speed to go thru the rotation 1=1s, 0.5=2s, 2=0.5s
    public float curvePos;              //use if you want to start at a different point on the curve 0-1, so 0.5 is halfway
    public bool loop=true;              //should we keep looping?
    Vector3 eul;                        //this stores your rotation: Note right now it would make your angles x & z=0

    void Start () {
        eul=Vector3.zero;
    }


    void Update () {
        if (curvePos!=1||loop){
            curvePos+=rotateRate*Time.deltaTime;
            if (curvePos>1f&&loop){curvePos=curvePos-1f;}
            else if (curvePos>1f&&!loop){curvePos=1f;}

            eul.y=offset+rotateAmount*rotateCurve.Evaluate(curvePos);
            transform.localEulerAngles=eul;
        }
    }
}