Scale by Curve script for Unity3D

using UnityEngine;
using System.Collections;
//script to apply scaling over time based on a curve
//Quentin Preik - 2012/10/22
//@fivearchers
public class CurveScale : MonoBehaviour {

    public AnimationCurve scaleCurve;   //Curve to scale with - usually cover 0 to 1 on both axis
    public Vector3 movement;            //this is the scaling amount - it is additive, so if you say 0,2,0 - at 1 on the curve
                                        // your object would be 2x as big on the Y axis, and the same size on x and z

    public float scaleRate;             //How fast to scale:  1=1s, 2=0.5s, 0.5=2s
    public float curvePos;              //Use this as an offset, so at 0.5 it would start halfway thru the curve
    public bool loop=true;              //Whether to loop or not
    Vector3 localstart;

    void Start () {
        localstart=transform.localScale;
    }


    void Update () {
        if (curvePos!=1||!loop){
            curvePos+=scaleRate*Time.deltaTime;
            if (curvePos>1f){curvePos=curvePos-1f;}
            transform.localScale=localstart+movement*scaleCurve.Evaluate(curvePos);
        }
    }
}