final Mesh torus = new Torus("Torus", 16, 16, 1, 4);
torus.setModelBound(new BoundingBox());
torus.setTranslation(new Vector3(4, 0, -10));
_root.attachChild(torus);
final Mesh sphere = new Sphere("Sphere", 16, 16, 5);
sphere.setModelBound(new BoundingBox());
sphere.setTranslation(new Vector3(-8, 0, -30));
_root.attachChild(sphere);
final Box box = new Box("Box", new Vector3(), 50, 1, 50);
box.setModelBound(new BoundingBox());
box.setTranslation(new Vector3(0, -1, -25));