Hello,
At first, thanks a lot for this very usefull library!
I'm trying to create an atmoshpere around planets.
To do that, I put a sphere around another slightly smaller with a transparent texture. But the largest sphere is not visible on the side of smallest sphere as i was hoping.
I tried different value of transparency, size, culling mode, etc... outside of the smallest sphere, the side of largest still invisible.
Do you have any idea how to do this ? what I'm doing wrong ?

Thanks a lot !

Some code:
        Object3D planet = Loader.loadASC(new FileInputStream("res/meshes/sphere.asc"), (float) planet_radius, true);
        Object3D atmo = Loader.loadASC(new FileInputStream("res/meshes/sphere.asc"), (float) planet_radius, true);
       
        atmo.rotateX((float) (Math.PI/2));
        planet.rotateX((float) (Math.PI/2));
       
        atmo.setOrigin(new SimpleVector( center[X], center[Y], center[Z]));
        planet.setOrigin(new SimpleVector( center[X], center[Y], center[Z]));
       
        atmo.scale((float) atmo_radius);
       
        atmo.setTexture("atmo");
        atmo.setSpecularLighting( true );
        atmo.setCulling(false);
        atmo.setTransparency(0);
        atmo.setTransparencyMode( Object3D.TRANSPARENCY_MODE_ADD);
        //atmo.setAdditionalColor(255,255,255);
        planet.setTexture( textureId );
       
        planet.build();
        atmo.build();
        planet.addChild(atmo);


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