Adding clickable 3DObject Rajawali Cardboard

Question

I'm trying to add a simple Sphere Object to my VR app using Rajawali Libraries. My app should show a simple View ( with RajawaliCardboardRenderer, a sphere with the texture of an images ). The question is : can I simply add a sphere or a 3DObject to that sphere which is gonna be clickable?

Here's my code :

    public class MyRenderer extends RajawaliCardboardRenderer {
    private Sphere sphere,sphere2;
    public MyRenderer(Context context) {
        super(context);
    }

    @Override
    protected void initScene() {

        sphere = createPhotoSphereWithTexture(new Texture("photo", R.drawable.panorama));

        sphere2 = new Sphere(24,24,24);

        Material m = new Material();
        m.setColor(0);
        try {
            m.addTexture(new Texture("photo",R.drawable.zvirbloniu_parkas));
        } catch ( ATexture.TextureException e) {
            e.printStackTrace();
        }
        sphere2.setMaterial(m);


        getCurrentScene().addChild(sphere);
        getCurrentScene().addChild(sphere2);

        getCurrentCamera().setPosition(Vector3.ZERO);
        getCurrentCamera().setFieldOfView(100);
    }

    @Override
    protected void onRender(long ellapsedRealtime, double deltaTime) {
        super.onRender(ellapsedRealtime, deltaTime);
        sphere2.rotate(Vector3.Axis.Y, 1.0);
    }

    private static Sphere createPhotoSphereWithTexture(ATexture texture) {

        Material material = new Material();
        material.setColor(0);

        try {
            material.addTexture(texture);
        } catch (ATexture.TextureException e) {
            throw new RuntimeException(e);
        }

        Sphere sphere = new Sphere(50, 64, 32);
        sphere.setScaleX(-1);
        sphere.setMaterial(material);

        return sphere;
    }
}

Don't look at the form of the code, it is bad-written, it doesn't follow any pattern!

Answer 1

You need to attach the sphere2 as a child of the "scenario" sphere, in order to display it inside the scenario, something like this:

 sphere = createPhotoSphereWithTexture(new Texture("photo", .drawable.panorama));

 sphere2 = new Sphere(24,24,24);

 ...

 sphere.addChild(sphere2);
 getCurrentScene().addChild(sphere);

Answer 2

The object picking mechanism of Rajawali will handle child objects. You could either add your new spheres directly to the scene, or to the photo sphere as children, whichever you prefer.