}
private void addObjects() {
final Box box1 = new Box("box", Vector3.ZERO, 5, 15, 5);
box1.setTranslation(0, box1.getYExtent(), 0);
TextureState ts = new TextureState();
ts.setTexture(TextureManager.load("images/skybox/1.jpg", Texture.MinificationFilter.Trilinear, true));
box1.setRenderState(ts);
box1.getSceneHints().setPickingHint(PickingHint.Pickable, true);
box1.setModelBound(new BoundingBox());
final Node base = new Node();
base.setTranslation(0, 0, 0);
base.attachChild(box1);
_root.attachChild(base);
final Sphere sphere = new Sphere("sphere", Vector3.ZERO, 16, 16, 8);
ts = new TextureState();
ts.setTexture(TextureManager.load("images/water/dudvmap.png", Texture.MinificationFilter.Trilinear, true));
sphere.setRenderState(ts);
sphere.getSceneHints().setPickingHint(PickingHint.Pickable, true);
sphere.setModelBound(new BoundingSphere());
final Node joint = new Node();
joint.setTranslation(0, sphere.getRadius() + 2 * box1.getYExtent(), 0);
joint.attachChild(sphere);
base.attachChild(joint);
final Box box2 = new Box("box", Vector3.ZERO, 5, 15, 5);
box2.setTranslation(0, box2.getYExtent(), 0);
ts = new TextureState();
ts.setTexture(TextureManager.load("images/skybox/3.jpg", Texture.MinificationFilter.Trilinear, true));
box2.setRenderState(ts);
box2.getSceneHints().setPickingHint(PickingHint.Pickable, true);
box2.setModelBound(new BoundingBox());
final Node arm = new Node();