iTween on GUI

Unity Engine
1

I am trying to fade out a GUI area with iTween. I purchased an animation example from the iTween site so that I could see how to invoke an animation / fade, etc … but I can’t seem to put it together for a fade :evil:

Here is my fade function:

function fadeOut_Details()
{     iTween.FadeUpdate(gameObject,iTween.Hash("alpha",0,"time",2));
}

… and this function is called from an OnGUI call (not visible here) and I currently hide / show the GUI contents of this function with a boolean flag (also in non-visible OnGUI). However, I want to fade it out rather than a simple “snap hide”.

function displayLessonDetailsWindow()
{    
 // Background Overlay
 if(GUI.Button(Rect(0,0,500,500),"Click to Fade Out",Background_win))
 {
   // Click big BG button to fade out self and area below.        
   fadeOut_Details();
 }
    
     GUILayout.BeginArea(Rect (0,0,500,500));
       // GUI Stuff in here ... 
    GUILayout.EndArea();
}

I’ve been all over Google for answers and I’m not really finding anything substantial … any help would be greatly appreciated!

(Please don’t point me to the iTween docs… I’ve been there many times)

Thanks!

2

gui stuff will not fade only 3D things.

to have fading on the gui you need to modify GUI.color before drawing

3

Pretty certain you can’t fade out UnityGUI elements with iTween as the “GUI” itself isn’t really a gameobject that you can address in that manner. I may be mistaken…

4

For modifying the GUI.color, will that work for graphics as well, or just solid colors? Currently, I have about 20 individual GUIStyles.

(I have plans to merge them into a GUISkin later).

5

That was my thought initially, but I was proven wrong by the example I purchased from iTween. It referenced an OnGUI area and animated it by simply using the term “gameObject” … I was hoping it would work the same for alpha.

6

sure it was an ongui area (unity 2.x UI), not guitexture and guitext (Unity 1.x UI), which indeed are bound to game objects and transform?

7

Positive. I’d post the code of the functioning animation, but it’s all broken out into functions and it’s hard to trace back to the actual OnGUI function … ironically, for easier reading :slight_smile: