Add a Tween method to UIPanelAlpha

[nah0y]

Hi there !

I suppose almost everybody use UIPanelAlpha with a script or something to decrease the alpha of a panel and not just set a hard alpha value.

So my question is, can you add a simple tweening method to this class to change the opacity from a value to another one ?

[ArenMook]

That script was written for use with Unity animations, however I can add support to TweenAlpha as well.

[ArenMook]

1. //----------------------------------------------
2. //            NGUI: Next-Gen UI kit
3. // Copyright © 2011-2012 Tasharen Entertainment
4. //----------------------------------------------
5.  
6. using UnityEngine;
7.  
8. /// <summary>
9. /// Tween the object's alpha.
10. /// </summary>
11.  
12. [AddComponentMenu("NGUI/Tween/Alpha")]
13. public class TweenAlpha : UITweener
14. {
15.         public float from = 1f;
16.         public float to = 1f;
17.  
18.         Transform mTrans;
19.         UIWidget mWidget;
20.         UIPanelAlpha mPanelAlpha;
21.  
22.         /// <summary>
23.         /// Current alpha.
24.         /// </summary>
25.  
26.         public float alpha
27.         {
28.                 get
29.                 {
30.                         if (mWidget != null) return mWidget.alpha;
31.                         if (mPanelAlpha != null) return mPanelAlpha.alpha;
32.                         return 0f;
33.                 }
34.                 set
35.                 {
36.                         if (mWidget != null) mWidget.alpha = value;
37.                         else if (mPanelAlpha != null) mPanelAlpha.alpha = value;
38.                 }
39.         }
40.  
41.         /// <summary>
42.         /// Find all needed components.
43.         /// </summary>
44.  
45.         void Awake ()
46.         {
47.                 mPanelAlpha = GetComponent<UIPanelAlpha>();
48.                 if (mPanelAlpha == null) mWidget = GetComponentInChildren<UIWidget>();
49.         }
50.  
51.         /// <summary>
52.         /// Interpolate and update the alpha.
53.         /// </summary>
54.  
55.         override protected void OnUpdate (float factor, bool isFinished) { alpha = Mathf.Lerp(from, to, factor); }
56.  
57.         /// <summary>
58.         /// Start the tweening operation.
59.         /// </summary>
60.  
61.         static public TweenAlpha Begin (GameObject go, float duration, float alpha)
62.         {
63.                 TweenAlpha comp = UITweener.Begin<TweenAlpha>(go, duration);
64.                 comp.from = comp.alpha;
65.                 comp.to = alpha;
66.  
67.                 if (duration <= 0f)
68.                 {
69.                         comp.Sample(1f, true);
70.                         comp.enabled = false;
71.                 }
72.                 return comp;
73.         }
74. }

[nah0y]

Thanks a lot !

[oriam]

I was using TweenAlpha without UIPanelAlpha (I'm new to NGUI). Even though the Tween script was in the panel, it only fade the "fade button", not the entire panel. This fix is quite useful. Hopefully it will make it to a public release

[ArenMook]

It has.

[oriam]

Oh nice just updated and checked it out, thank you