Untitled

public class Test extends ApplicationAdapter {

        private ModelBatch modelBatch;
        private PerspectiveCamera camera;
        private ModelInstance modelInstance;
        private AssetManager assets;
        private CameraInputController cameraController;
        private Viewport viewport;
        private Environment environment;

        @Override
        public void create() {
                assets = new AssetManager();
                // assets.load("BrickHouse.g3db", Model.class);
                // assets.finishLoading();
                // modelInstance = new ModelInstance(assets.get("BrickHouse.g3db",
                // Model.class));
                modelBatch = new ModelBatch();
                camera = new PerspectiveCamera();
                cameraController = new CameraInputController(camera);
                camera.position.set(10, 10, 10);
                camera.lookAt(0, 0, 0);
                Gdx.input.setInputProcessor(cameraController);
                viewport = new ScreenViewport(camera);
                ModelBuilder builder = new ModelBuilder();
                modelInstance = new ModelInstance(builder.createBox(1, 1, 1, new Material(), Usage.Position | Usage.Normal), new Matrix4());
                environment = new Environment();
                environment.set(new ColorAttribute(ColorAttribute.AmbientLight, 0.4f, 0.4f, 0.4f, 1f));
                environment.add(new DirectionalLight().set(0.8f, 0.8f, 0.8f, -1f, -0.8f, -0.2f));
        }

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

                cameraController.update();
                camera.update(true);

                modelBatch.begin(camera);
                modelBatch.render(modelInstance, environment);
                modelBatch.end();
        }

        @Override
        public void resize(int width, int height) {
                viewport.update(width, height);
        }
}