unity3d 扩展NGUI Tweener —— TweenFillAmount

 1 #region HeadComments
 2 /* ========================================================================
 3 * Copyright (C) 2015 Arthun
 4 *
 5 * 作    者：Arthun
 6 * 文件名称：TweenFillAmount
 7 * 功    能：移动填充量
 8 * 创建时间：2015/09/10 10:58:12
 9 * 版    本：v1.0.0
10 *
11 * [修改日志]
12 * 修改者： 时间： 修改内容：
13 * 
14 * =========================================================================
15 */
16 #endregion
17 
18 using UnityEngine;
19 
20 [RequireComponent(typeof(UIBasicSprite))]
21 [AddComponentMenu("NGUI/Tween/Tween Fill Amount")]
22 public class TweenFillAmount : UITweener
23 {
24     [Range(0f, 1f)]
25     public float from = 1f;
26     [Range(0f, 1f)]
27     public float to = 1f;
28 
29     private bool mCached = false;
30     private UIBasicSprite mBasic;
31 
32     private void Cache()
33     {
34         mCached = true;
35         mBasic = GetComponent<UIBasicSprite>();
36     }
37 
38     public float value
39     {
40         get
41         {
42             if (!mCached) Cache();
43             return mBasic != null ? mBasic.fillAmount : 1f;
44         }
45         set
46         {
47             if (!mCached) Cache();
48             if (mBasic != null) mBasic.fillAmount = value;
49         }
50     }
51 
52     protected override void OnUpdate(float factor, bool isFinished) { value = Mathf.Lerp(from, to, factor); }
53 
54     public override void SetStartToCurrentValue() { from = value; }
55 
56     public override void SetEndToCurrentValue() { to = value; }
57 }