libgdx basic cube

Newbie & Debugging Questions
#1

hey there… im creating a project using libgdx 3d and im quite new to the whole thing…

model = modelBuilder.createBox(5f, 5f, 5f,
            new Material(ColorAttribute.createDiffuse(Color.GREEN)),
            Usage.Position | Usage.Normal);
        
        instance = new ModelInstance(model);
        
        camController = new CameraInputController(cam);
        Gdx.input.setInputProcessor(camController);

anyways i have created a basic cube and got the camera to rotate around the cube…


if (Gdx.input.isTouched()){
        	vec.x = Gdx.input.getX();
                cam.rotate(0, vec.x, 0, 0);
        }

so know what i want to do is to know which face of the cube is facing the camera after the rotation is done… and if i can make each face clickable