Fading in/out a text

Troubleshooting graphics
1

Hi, I am trying to do an effect of fading to text (this text has been created using Text class), I have used to do this the class FadeInOut and FadeInOutController, but it doesn't work, although with an image it does. How I can get the same effect  on the text.


//Create FadeInOut
logoQuad_fadeInOut = CreateFade(logoQuad, "logQuad");
txtObj_fadeInOut = CreateFade(txtObj, "txtObj");

//Function CreateFade
private FadeInOut CreateFade(Geometry object, String name){
      FadeInOut f = new FadeInOut( name, object, null, null, new ColorRGBA(1, 1, 1, 0), 0.3f);
      return f;
}

//Create Controller
logoQuad_fadeInOutController = new FadeInOutController(logoQuad_fadeInOut);
txtObj_fadeInOutController = new FadeInOutController(txtObj_fadeInOut);
      
//Add Controller
logoQuad.addController(logoQuad_fadeInOutController);
txtObj.addController(txtObj_fadeInOutController);



The logoQuad fades, but txtObj does anything.
2

I wonder if you have a lightstate somehow attached to your text_obj…



How is it attached to the scene?

3

No i have nothing like that.



This is my txtObj


txtObj = CreatePresenta();

private Text CreatePresenta(){      
        // Create presenta 
      TextureState tsFont;
      Text text;
        tsFont = DisplaySystem.getDisplaySystem().getRenderer().createTextureState();
        tsFont.setTexture(TextureManager.loadTexture(
              IntroMenuState.class.getClassLoader().getResource("res/gameFont.png"),
               Texture.MinificationFilter.BilinearNearestMipMap,
               Texture.MagnificationFilter.Bilinear));
        text = new Text("text", "Presenta:");
        text.setLocalTranslation(650, 100, 0);
        text.setZOrder(0);
        text.setRenderState(tsFont);
        text.setLocalScale(3f);
        text.setTextColor(ColorRGBA.black);
        return text;
   }



And it is attached just like that: getRootNode().attachChild(txtObj);
4

decrement a float value "textAlpha" in your update loop from 1 to 0 and then set the alpha value:


textObj.getTextColor().a = textAlpha;

5

I did it, i only want to know if there is another way to get the same, using a controller. Thanks.

6

yes you can do the same in a controller, just extend Controller, set your values in the constructor (targetalpha, speed, …) and set the alpha value of the text in the overridden update method.

7

Alternatively you could just set the ColorRGBA reference to both objects (just set the defaultColor() to the same ColorRGBA object)…