Bug with UIPanelAlpha?

[turkeypotpie]

I added a UIPanelAlpha component to my panel node, and set its Alpha value to 0.

In another script, I use iTween to change the alpha value:

1.  
2.     public float fadeInTime = 0;
3.  
4.     private void Start() {
5.         if (fadeInTime > 0) {
6.             iTween.ValueTo(gameObject, iTween.Hash(
7.                 "from", 0,
8.                 "to", 1,
9.                 "time", fadeInTime,
10.                 "onupdate", "OnFadeInUpdate"));
11.         }
12.     }
13.  
14.     private void OnFadeInUpdate(float amount) {
15.         GetComponent<UIPanelAlpha>().alpha = amount;
16.     }
17.    
18.  

The fade itself works ok, but after the fade, the buttons are in a disabled state.


If I remove the following lines in UIPanelAlpha.cs:

1.  
2.                 // Fade out finished -- disable all game objects
3.                                 Transform trans = transform;
4.                                 for (int i = 0, imax = trans.childCount; i < imax; ++i) NGUITools.SetActive(trans.GetChild(i).gameObject, false);
5.                                 mLevel = 0;
6.  
7.  

... then the problem goes away.  Why does it think there was a fade out when the alpha value started from zero?

[turkeypotpie]

Just tried the same thing with NGUI's builtin alpha tweener, and things work ok.

Though this should still probably be fixed so things can be piped in from the outside.