Octahedron geometryAnimatedScene is ready.Context3dLostEvent is fired.#onUpdate() called.
OrthographicCamera camera = new OrthographicCamera( width / - 2, width / 2, height / 2, height / - 2, 1, 1000 );
// or, simple
OrthographicCamera camera = new OrthographicCamera( width, height, 1, 1000 );