public class Test extends ApplicationAdapter {

    private  RayHandler rayHandler;

    @Override
    public void create () {
        Stage test = new Stage();

        World w = new World(new Vector2(), false);

        rayHandler = new RayHandler(w);
        rayHandler.setAmbientLight(1f, 1f, 1f, 1f);
        rayHandler.setCulling(true);
        rayHandler.setBlur(true);
        rayHandler.setBlurNum(3);
        rayHandler.setShadows(true);
        rayHandler.setCombinedMatrix(test.getCamera().combined);
    }

    @Override
    public void render () {
        Gdx.gl.glClearColor(0, 0, 0, 1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

        rayHandler.updateAndRender();
    }
}