java类com.badlogic.gdx.graphics.g3d.utils.ModelBuilder的实例源码

@Override
public void create() {
    super.create();

    geometryPass = new ShaderProgram(
            Gdx.files.internal("shaders/g_buffer.vert"),
            Gdx.files.internal("shaders/g_buffer.frag"));

    lightingPass = new ShaderProgram(
            Gdx.files.internal("shaders/deferred_shader.vert"),
            Gdx.files.internal("shaders/deferred_shader.frag"));

    ModelBuilder mb = new ModelBuilder();
    Model cube = mb.createBox(1, 1, 1, new Material(),
            VertexAttributes.Usage.Position |
                    VertexAttributes.Usage.Normal |
                    VertexAttributes.Usage.TextureCoordinates);
    cubeMesh = cube.meshes.first();
}

public void init() {
    final int numVertices = this.vertexResolution * this.vertexResolution;
    final int numIndices = (this.vertexResolution-1) * (this.vertexResolution-1) * 6;

    mesh = new Mesh(true, numVertices, numIndices, attribs);
    this.vertices = new float[numVertices * stride];
    mesh.setIndices(buildIndices());
    buildVertices();
    mesh.setVertices(vertices);

    MeshPart meshPart = new MeshPart(null, mesh, 0, numIndices, GL30.GL_TRIANGLES);
    meshPart.update();
    ModelBuilder mb = new ModelBuilder();
    mb.begin();
    mb.part(meshPart, material);
    model = mb.end();
    modelInstance = new ModelInstance(model);
    modelInstance.transform = transform;
}

public SimulationRunner() {
    logger.info("Loading models");
    ModelBuilder builder = new ModelBuilder();
    models.put("box", builder.createBox(5f, 5f, 5f,
            new Material(ColorAttribute.createDiffuse(new Color(0.8f, 0f, 0f, 0f))),
            VertexAttributes.Usage.Position | VertexAttributes.Usage.Normal));

    G3dModelLoader loader = new G3dModelLoader(new JsonReader());
    models.put("hub", loader.loadModel(Gdx.files.internal("data/hubreal.g3dj")));
    models.put("rim", loader.loadModel(Gdx.files.internal("data/rimreal.g3dj")));
    models.put("spoke", loader.loadModel(Gdx.files.internal("data/spoke.g3dj")));


    Bullet.init();
    logger.info("Initialized Bullet");
}

public void init() {
    final int numVertices = this.vertexResolution * vertexResolution;
    final int numIndices = (this.vertexResolution - 1) * (vertexResolution - 1) * 6;

    mesh = new Mesh(true, numVertices, numIndices, attribs);
    this.vertices = new float[numVertices * stride];
    mesh.setIndices(buildIndices());
    buildVertices();
    mesh.setVertices(vertices);

    MeshPart meshPart = new MeshPart(null, mesh, 0, numIndices, GL20.GL_TRIANGLES);
    meshPart.update();
    ModelBuilder mb = new ModelBuilder();
    mb.begin();
    mb.part(meshPart, material);
    model = mb.end();
    modelInstance = new ModelInstance(model);
    modelInstance.transform = transform;
}

public static Model createAxes() {
    final float GRID_MIN = -10f;
    final float GRID_MAX = 10f;
    final float GRID_STEP = 1f;
    ModelBuilder modelBuilder = new ModelBuilder();
    modelBuilder.begin();
    MeshPartBuilder builder = modelBuilder.part("grid", GL20.GL_LINES,
            VertexAttributes.Usage.Position | VertexAttributes.Usage.ColorUnpacked, new Material());
    builder.setColor(Color.LIGHT_GRAY);
    for (float t = GRID_MIN; t <= GRID_MAX; t += GRID_STEP) {
        builder.line(t, 0, GRID_MIN, t, 0, GRID_MAX);
        builder.line(GRID_MIN, 0, t, GRID_MAX, 0, t);
    }
    builder = modelBuilder.part("axes", GL20.GL_LINES,
            VertexAttributes.Usage.Position | VertexAttributes.Usage.ColorUnpacked, new Material());
    builder.setColor(Color.RED);
    builder.line(0, 0, 0, 100, 0, 0);
    builder.setColor(Color.GREEN);
    builder.line(0, 0, 0, 0, 100, 0);
    builder.setColor(Color.BLUE);
    builder.line(0, 0, 0, 0, 0, 100);
    return modelBuilder.end();
}

public ScaleTool(ProjectManager projectManager, GameObjectPicker goPicker, ToolHandlePicker handlePicker,
        ShapeRenderer shapeRenderer, ModelBatch batch, CommandHistory history) {
    super(projectManager, goPicker, handlePicker, batch, history);

    this.shapeRenderer = shapeRenderer;

    ModelBuilder modelBuilder = new ModelBuilder();
    Model xPlaneHandleModel = UsefulMeshs.createArrowStub(new Material(ColorAttribute.createDiffuse(COLOR_X)),
            Vector3.Zero, new Vector3(15, 0, 0));
    Model yPlaneHandleModel = UsefulMeshs.createArrowStub(new Material(ColorAttribute.createDiffuse(COLOR_Y)),
            Vector3.Zero, new Vector3(0, 15, 0));
    Model zPlaneHandleModel = UsefulMeshs.createArrowStub(new Material(ColorAttribute.createDiffuse(COLOR_Z)),
            Vector3.Zero, new Vector3(0, 0, 15));
    Model xyzPlaneHandleModel = modelBuilder.createBox(3, 3, 3,
            new Material(ColorAttribute.createDiffuse(COLOR_XYZ)),
            VertexAttributes.Usage.Position | VertexAttributes.Usage.Normal);

    xHandle = new ScaleHandle(X_HANDLE_ID, xPlaneHandleModel);
    yHandle = new ScaleHandle(Y_HANDLE_ID, yPlaneHandleModel);
    zHandle = new ScaleHandle(Z_HANDLE_ID, zPlaneHandleModel);
    xyzHandle = new ScaleHandle(XYZ_HANDLE_ID, xyzPlaneHandleModel);

    handles = new ScaleHandle[] { xHandle, yHandle, zHandle, xyzHandle };
}

public static Model buildPlaneModel(final float width,
                                    final float height, final Material material, final float u1,
                                    final float v1, final float u2, final float v2) {

    ModelBuilder modelBuilder = new ModelBuilder();
    modelBuilder.begin();
    MeshPartBuilder bPartBuilder = modelBuilder.part("rect", GL20.GL_TRIANGLES,
            VertexAttributes.Usage.Position
                    | VertexAttributes.Usage.Normal
                    | VertexAttributes.Usage.TextureCoordinates, material);
    bPartBuilder.setUVRange(u1, v1, u2, v2);
    bPartBuilder.rect(-(width * 0.5f), -(height * 0.5f), 0, (width * 0.5f),
            -(height * 0.5f), 0, (width * 0.5f), (height * 0.5f), 0,
            -(width * 0.5f), (height * 0.5f), 0, 0, 0, -1);

    return (modelBuilder.end());
}

public static Model createInfiniteWaterPart(TypeInterpreter interpreter, int landscapeIndex, PlanetConfig planetConfig) {
    ModelBuilder modelBuilder = new ModelBuilder();
    MeshBuilder builder = new MeshBuilder();
    float waterHeight = interpreter.it.get(landscapeIndex).endValue;
    builder.begin(PlanetPart.VERTEX_ATTRIBUTES, GL20.GL_TRIANGLES);
    infiniteWaterHeight = waterHeight * planetConfig.landscapeHeight - 1;
    Vector3 corner01 = new Vector3(-INFINITE_WATER_SIZE, -INFINITE_WATER_SIZE, infiniteWaterHeight);
    Vector3 corner02 = new Vector3(INFINITE_WATER_SIZE, -INFINITE_WATER_SIZE, infiniteWaterHeight);
    Vector3 corner03 = new Vector3(INFINITE_WATER_SIZE, INFINITE_WATER_SIZE, infiniteWaterHeight);
    Vector3 corner04 = new Vector3(-INFINITE_WATER_SIZE, INFINITE_WATER_SIZE, infiniteWaterHeight);
    builder.rect(corner01, corner02, corner03, corner04, new Vector3(0, 0, 1));
    Material waterMaterial = planetConfig.layerConfigs.get(landscapeIndex).material;
    Mesh mesh = builder.end();
    modelBuilder.begin();
    modelBuilder.part(PlanetPart.LANDSCAPE_PART_NAME + landscapeIndex, mesh, GL20.GL_TRIANGLES, waterMaterial);
    return modelBuilder.end();
}

@Override
public void create () {
    modelBatch = new ModelBatch(new BaseShaderProvider() {
        @Override
        protected Shader createShader (Renderable renderable) {
            return new TestShader();
        }
    });

    cam = new PerspectiveCamera(67, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
    cam.position.set(10f, 10f, 10f);
    cam.lookAt(0, 0, 0);
    cam.near = 0.1f;
    cam.far = 300f;
    cam.update();

    camController = new CameraInputController(cam);
    Gdx.input.setInputProcessor(camController);

    Material material = new Material(new TestAttribute(1f));
    ModelBuilder builder = new ModelBuilder();
    model = builder.createCone(5, 5, 5, 20, material, Usage.Position);
    instance = new ModelInstance(model);
    testAttribute = (TestAttribute)instance.materials.get(0).get(TestAttribute.ID);
}

@Override
public void create () {
    modelBatch = new ModelBatch();
    environment = new Environment();
    environment.set(new ColorAttribute(ColorAttribute.AmbientLight, 0.4f, 0.4f, 0.4f, 1.f));
    environment.set(new ColorAttribute(ColorAttribute.Fog, 0.13f, 0.13f, 0.13f, 1f));
    environment.add(new DirectionalLight().set(0.8f, 0.8f, 0.8f, -1f, -0.8f, -0.2f));

    cam = new PerspectiveCamera(67, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
    cam.position.set(30f, 10f, 30f);
    cam.lookAt(0, 0, 0);
    cam.near = 0.1f;
    cam.far = 45f;
    cam.update();

    ModelBuilder modelBuilder = new ModelBuilder();
    model = modelBuilder.createBox(5f, 5f, 5f, new Material(ColorAttribute.createDiffuse(Color.GREEN)), Usage.Position
        | Usage.Normal);
    instance = new ModelInstance(model);

    Gdx.input.setInputProcessor(new InputMultiplexer(this, inputController = new CameraInputController(cam)));
}

private void createAxes () {
    ModelBuilder modelBuilder = new ModelBuilder();
    modelBuilder.begin();
    MeshPartBuilder builder = modelBuilder.part("grid", GL20.GL_LINES, Usage.Position | Usage.Color, new Material());
    builder.setColor(Color.LIGHT_GRAY);
    for (float t = GRID_MIN; t <= GRID_MAX; t += GRID_STEP) {
        builder.line(t, 0, GRID_MIN, t, 0, GRID_MAX);
        builder.line(GRID_MIN, 0, t, GRID_MAX, 0, t);
    }
    builder = modelBuilder.part("axes", GL20.GL_LINES, Usage.Position | Usage.Color, new Material());
    builder.setColor(Color.RED);
    builder.line(0, 0, 0, 100, 0, 0);
    builder.setColor(Color.GREEN);
    builder.line(0, 0, 0, 0, 100, 0);
    builder.setColor(Color.BLUE);
    builder.line(0, 0, 0, 0, 0, 100);
    axesModel = modelBuilder.end();
    axesInstance = new ModelInstance(axesModel);
}

@Override
    public void create () {
        modelBatch = new ModelBatch(new DefaultShaderProvider());
// modelBatch = new ModelBatch();
        environment = new Environment();
        environment.set(new ColorAttribute(ColorAttribute.AmbientLight, .4f, .4f, .4f, 1f));
        environment.add(new DirectionalLight().set(0.8f, 0.8f, 0.8f, -1f, -0.8f, -0.2f));

        cam = new PerspectiveCamera(67, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
        cam.position.set(10f, 10f, 10f);
        cam.lookAt(0, 0, 0);
        cam.near = 0.1f;
        cam.far = 300f;
        cam.update();

        ModelBuilder modelBuilder = new ModelBuilder();
        model = modelBuilder.createBox(5f, 5f, 5f, new Material(ColorAttribute.createDiffuse(Color.GREEN)), Usage.Position
            | Usage.Normal);
        instance = new ModelInstance(model);

// model = new G3dModelLoader(new UBJsonReader()).loadModel(Gdx.files.internal("data/g3d/knight.g3db"));
// instance = new ModelInstance(model);

        Gdx.input.setInputProcessor(new InputMultiplexer(this, inputController = new CameraInputController(cam)));
    }

@Override
public void create () {
    ModelBuilder builder = new ModelBuilder();
    sphere = builder.createSphere(2f, 2f, 2f, 16, 16, new Material(new ColorAttribute(ColorAttribute.Diffuse, Color.WHITE)),
        Usage.Position | Usage.Normal);
    // cam = new PerspectiveCamera(45, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
    cam = new OrthographicCamera(45, 45 * (Gdx.graphics.getWidth() / (float)Gdx.graphics.getHeight()));

    cam.near = 1;
    cam.far = 200;

    Random rand = new Random();
    for (int i = 0; i < instances.length; i++) {
        pos.set(rand.nextFloat() * 100 - rand.nextFloat() * 100, rand.nextFloat() * 100 - rand.nextFloat() * 100,
            rand.nextFloat() * -100 - 3);
        instances[i] = new ModelInstance(sphere, pos);
    }
    modelBatch = new ModelBatch();

    batch = new SpriteBatch();
    font = new BitmapFont();
    // Gdx.graphics.setVSync(true);
    // Gdx.app.log("CullTest", "" + Gdx.graphics.getBufferFormat().toString());
}

public TileHighlightDisplayable() {
  ModelBuilder modelBuilder = new ModelBuilder();

  Model model
      = modelBuilder.createRect(0, 0, Z_OFFSET,
                                1, 0, Z_OFFSET,
                                1, 1, Z_OFFSET,
                                0, 1, Z_OFFSET,
                                0, 0, 1,
                                GL20.GL_TRIANGLES,
                                new Material(
                                    new ColorAttribute(
                                        ColorAttribute.createDiffuse(color)),
                                    new BlendingAttribute(
                                        GL20.GL_SRC_ALPHA,
                                        GL20.GL_ONE_MINUS_SRC_ALPHA)),
                                VertexAttributes.Usage.Position |
                                VertexAttributes.Usage.TextureCoordinates);

  instance = new ModelInstance(model);
}

public Game3d(){
   ship = Asset.loadModelObj("ship");//loads an obj model
   ship.scale(3f);
   skydome = Asset.loadModel("skydome"); //loads a g3db model
   builder = new ModelBuilder();
   builder.begin();
   MeshPartBuilder part = builder.part("floor", GL20.GL_TRIANGLES, Usage.Position | 
        Usage.TextureCoordinates | Usage.Normal, new Material());
   for (float x = -200f; x < 200f; x += 10f) {
       for (float z = -200f; z < 200f; z += 10f) {
           part.rect(x, 0, z + 10f, x + 10f, 0, z + 10f, x + 10f, 0, z, x, 0, z, 0, 1, 0);
       }
   }
   floor = new Actor3d(builder.end());
   floor.materials.get(0).set(TextureAttribute.createDiffuse(Asset.tex("concrete").getTexture()));
   knight = Asset.loadModel("knight");
   knight.setPosition(-20f, 18f, 0f);
   knight.setPitch(-90f);
   addActor3d(floor);
   addActor3d(skydome);
   addActor3d(ship);
   addActor3d(knight);
   stage3d.getCamera().position.set(knight.getX()+ 13f, knight.getY() + 24f, knight.getZ() + 45f);
   //Camera3d.followOffset(20f, 20f, -20f);
  // Camera3d.followActor3d(knight, false);
}

@Override
public void create() {
    assets = new AssetManager();
    String model = "Bambo_House.g3db";
    assets.load(model, Model.class);
    assets.finishLoading();
    modelInstance = new ModelInstance(assets.get(model, Model.class), new Matrix4().setToScaling(0.6f, 0.6f, 0.6f));

    DefaultShader.Config config = new Config();
    config.defaultCullFace = GL20.GL_NONE;
    ShaderProvider shaderProvider = new DefaultShaderProvider(config);
    modelBatch = new ModelBatch(shaderProvider);

    ModelBuilder builder = new ModelBuilder();
    float groundSize = 1000f;
    ground = new ModelInstance(builder.createRect(-groundSize, 0, groundSize, groundSize, 0, groundSize, groundSize, 0, -groundSize, -groundSize, 0, -groundSize, 0,
            1, 0, new Material(), Usage.Position | Usage.Normal), new Matrix4().setToTranslation(0, -0.01f, 0));
    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));

    VirtualReality.renderer.listeners.add(this);
    // VirtualReality.head.setCyclops(true);
}

public static void createFloor() {

        ModelBuilder modelBuilder = new ModelBuilder();
        modelBuilder.begin();
        MeshPartBuilder mpb = modelBuilder.part("parts", GL20.GL_TRIANGLES,
                Usage.Position | Usage.Normal | Usage.ColorUnpacked, new Material(
                        ColorAttribute.createDiffuse(Color.WHITE)));
        mpb.setColor(1f, 1f, 1f, 1f);
//      mpb.box(0, -0.1f, 0, 10, .2f, 10);
        mpb.rect(-10, 0, -10, 
                -10, 0, 10,
                10, 0, 10,
                10, 0, -10, 0, 1, 0);
        floorModel = modelBuilder.end();
        floorInstance = new ModelInstance(floorModel);

        // TODO Set only when FBO is active
        floorInstance.materials.get(0).set(new BlendingAttribute(GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA));
    }

private static void createAxes() {
    ModelBuilder modelBuilder = new ModelBuilder();
    modelBuilder.begin();
    MeshPartBuilder builder = modelBuilder.part("grid", GL20.GL_LINES, Usage.Position | Usage.ColorUnpacked, new Material());
    builder.setColor(Color.LIGHT_GRAY);
    for (float t = GRID_MIN; t <= GRID_MAX; t+=GRID_STEP) {
        builder.line(t, 0, GRID_MIN, t, 0, GRID_MAX);
        builder.line(GRID_MIN, 0, t, GRID_MAX, 0, t);
    }
    builder = modelBuilder.part("axes", GL20.GL_LINES, Usage.Position | Usage.ColorUnpacked, new Material());
    builder.setColor(Color.RED);
    builder.line(0, 0, 0, 10, 0, 0);
    builder.setColor(Color.GREEN);
    builder.line(0, 0, 0, 0, 10, 0);
    builder.setColor(Color.BLUE);
    builder.line(0, 0, 0, 0, 0, 10);
    axesModel = modelBuilder.end();
    axesInstance = new ModelInstance(axesModel);
}

/** players are represented by cubes, with another cube marking the direction it is facing */
public void createPlayerModel() {
    ModelBuilder mb = new ModelBuilder();
    ModelBuilder mb2 = new ModelBuilder();
    long attr = Usage.Position | Usage.Normal;
    float r = 0.5f;
    float g = 1f;
    float b = 0.75f;
    Material material = new Material(ColorAttribute.createDiffuse(new Color(r, g, b, 1f)));
    Material faceMaterial = new Material(ColorAttribute.createDiffuse(Color.BLUE));
    float w = 1f;
    float d = w;
    float h = 2f;
    mb.begin();
    //playerModel = mb.createBox(w, h, d, material, attr);
    Node node = mb.node("box", mb2.createBox(w, h, d, material, attr));
    // the face is just a box to show which direction the player is facing
    Node faceNode = mb.node("face", mb2.createBox(w/2, h/2, d/2, faceMaterial, attr));
    faceNode.translation.set(0f, 0f, d/2);
    playerModel = mb.end();
}

public void createBillboardTest() {
    ModelBuilder mb = new ModelBuilder();
    mb.begin();

    long attr = Usage.TextureCoordinates | Usage.Position | Usage.Normal;
    TextureRegion region = Assets.getAtlas().findRegion("sprites/test-guy");
    Material mat = new Material(TextureAttribute.createDiffuse(region.getTexture()));
    boolean blended = true;
    float opacity = 1f;
    mat.set(new BlendingAttribute(blended, GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA, opacity));
    MeshPartBuilder mpb = mb.part("rect", GL20.GL_TRIANGLES, attr, mat);
    mpb.setUVRange(region);
    // the coordinates are offset so that we can easily set the center position to align with the entity's body
    float sz = 2f; // size
    float b = -sz/2; // base
    float max = sz/2; // max
    Vector3 bl = new Vector3(b, b, 0f);
    Vector3 br = new Vector3(b, max, 0f);
    Vector3 tr = new Vector3(max, max, 0f);
    Vector3 tl = new Vector3(max, b, 0f);
    Vector3 norm = new Vector3(0f, 0f, 1f);
    mpb.rect(bl, tl, tr, br, norm);
    billboardTestModel = mb.end();
}

/** client builds statics, probably based on info from server */
public static void buildStatics(LevelStatic[] statics) {
    if (staticGeometry == null) {
        staticGeometry = new Array<>();
    }
    Log.debug("client building statics received from server: " + statics.length);
    ModelBuilder mb = new ModelBuilder();
    mb.begin();
    for (LevelStatic stat : statics) {
        Model model = Assets.manager.get(stat.modelName, Model.class);
        setupStaticModel(model.meshParts, stat.mtx, true);
        Node node = mb.node("piece", model);
        stat.mtx.getTranslation(tmp);
        node.translation.set(tmp);
        node.rotation.set(stat.mtx.getRotation(q));
    }
    Model finalModel = mb.end();
    ModelInstance instance = new ModelInstance(finalModel);
    staticGeometry.add(instance);
}

public static void init() {
    list = new Array<>();
    ModelBuilder mb = new ModelBuilder();
    Vector3 norm = new Vector3(0f, 1f, 0f);
    Texture texture = Assets.manager.get("textures/shadow.png", Texture.class);
    Material material = new Material(TextureAttribute.createDiffuse(texture));
    material.set(new BlendingAttribute(GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA, 0.7f));
    //material.set(new DepthTestAttribute(0)); // disable depth testing
    long attr = Usage.Position | Usage.TextureCoordinates;
    float s = 1f;
    model = mb.createRect(
            -s, 0f, -s,// bl
            -s, 0f, s, // tl
            s, 0f, s,  // tr
            s, 0f, -s,  // br
            norm.x, norm.y, norm.z,
            material,
            attr
    );
}

@Override
public void create() {
    modelBatch = new ModelBatch();

    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));

    cam = new PerspectiveCamera(67, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
    cam.position.set(10f, 10f, 10f);
    cam.lookAt(0, 0, 0);
    cam.near = 1f;
    cam.far = 300f;
    cam.update();

    camController = new CameraInputController(cam);
    Gdx.input.setInputProcessor(camController);

    ModelBuilder modelBuilder = new ModelBuilder();
       model = modelBuilder.createBox(5f, 5f, 5f, 
           new Material(ColorAttribute.createDiffuse(Color.GREEN)),
           Usage.Position | Usage.Normal);
       instance = new ModelInstance(model);
}

public ModelInstance createAxes () {
    ModelBuilder modelBuilder = new ModelBuilder();
    modelBuilder.begin();
    MeshPartBuilder builder = modelBuilder.part("grid", GL20.GL_LINES, Usage.Position | Usage.Color, new Material());
    builder.setColor(Color.LIGHT_GRAY);
    for (float t = GRID_MIN; t <= GRID_MAX; t += GRID_STEP) {
        builder.line(t, 0, GRID_MIN, t, 0, GRID_MAX);
        builder.line(GRID_MIN, 0, t, GRID_MAX, 0, t);
    }
    builder = modelBuilder.part("axes", GL20.GL_LINES, Usage.Position | Usage.Color, new Material());
    builder.setColor(Color.RED);
    builder.line(0, 0, 0, 100, 0, 0);
    builder.setColor(Color.GREEN);
    builder.line(0, 0, 0, 0, 100, 0);
    builder.setColor(Color.BLUE);
    builder.line(0, 0, 0, 0, 0, 100);
    Model axesModel = modelBuilder.end();
    ModelInstance axesInstance = new ModelInstance(axesModel);
    return axesInstance;
}

@Override
public void create () {
    modelBatch = new ModelBatch(new BaseShaderProvider() {
        @Override
        protected Shader createShader (Renderable renderable) {
            return new TestShader();
        }
    });

    cam = new PerspectiveCamera(67, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
    cam.position.set(10f, 10f, 10f);
    cam.lookAt(0, 0, 0);
    cam.near = 0.1f;
    cam.far = 300f;
    cam.update();

    camController = new CameraInputController(cam);
    Gdx.input.setInputProcessor(camController);

    Material material = new Material(new TestAttribute(1f));
    ModelBuilder builder = new ModelBuilder();
    model = builder.createCone(5, 5, 5, 20, material, Usage.Position);
    instance = new ModelInstance(model);
    testAttribute = (TestAttribute)instance.materials.get(0).get(TestAttribute.ID);
}

@Override
public void create () {
    modelBatch = new ModelBatch();
    environment = new Environment();
    environment.set(new ColorAttribute(ColorAttribute.AmbientLight, 0.4f, 0.4f, 0.4f, 1.f));
    environment.set(new ColorAttribute(ColorAttribute.Fog, 0.13f, 0.13f, 0.13f, 1f));
    environment.add(new DirectionalLight().set(0.8f, 0.8f, 0.8f, -1f, -0.8f, -0.2f));

    cam = new PerspectiveCamera(67, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
    cam.position.set(30f, 10f, 30f);
    cam.lookAt(0, 0, 0);
    cam.near = 0.1f;
    cam.far = 45f;
    cam.update();

    ModelBuilder modelBuilder = new ModelBuilder();
    model = modelBuilder.createBox(5f, 5f, 5f, new Material(ColorAttribute.createDiffuse(Color.GREEN)), Usage.Position
        | Usage.Normal);
    instance = new ModelInstance(model);

    Gdx.input.setInputProcessor(new InputMultiplexer(this, inputController = new CameraInputController(cam)));
}

private void createAxes () {
    ModelBuilder modelBuilder = new ModelBuilder();
    modelBuilder.begin();
    MeshPartBuilder builder = modelBuilder.part("grid", GL20.GL_LINES, Usage.Position | Usage.Color, new Material());
    builder.setColor(Color.LIGHT_GRAY);
    for (float t = GRID_MIN; t <= GRID_MAX; t += GRID_STEP) {
        builder.line(t, 0, GRID_MIN, t, 0, GRID_MAX);
        builder.line(GRID_MIN, 0, t, GRID_MAX, 0, t);
    }
    builder = modelBuilder.part("axes", GL20.GL_LINES, Usage.Position | Usage.Color, new Material());
    builder.setColor(Color.RED);
    builder.line(0, 0, 0, 100, 0, 0);
    builder.setColor(Color.GREEN);
    builder.line(0, 0, 0, 0, 100, 0);
    builder.setColor(Color.BLUE);
    builder.line(0, 0, 0, 0, 0, 100);
    axesModel = modelBuilder.end();
    axesInstance = new ModelInstance(axesModel);
}

@Override
    public void create () {
        modelBatch = new ModelBatch(new DefaultShaderProvider());
// modelBatch = new ModelBatch();
        environment = new Environment();
        environment.set(new ColorAttribute(ColorAttribute.AmbientLight, .4f, .4f, .4f, 1f));
        environment.add(new DirectionalLight().set(0.8f, 0.8f, 0.8f, -1f, -0.8f, -0.2f));

        cam = new PerspectiveCamera(67, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
        cam.position.set(10f, 10f, 10f);
        cam.lookAt(0, 0, 0);
        cam.near = 0.1f;
        cam.far = 300f;
        cam.update();

        ModelBuilder modelBuilder = new ModelBuilder();
        model = modelBuilder.createBox(5f, 5f, 5f, new Material(ColorAttribute.createDiffuse(Color.GREEN)), Usage.Position
            | Usage.Normal);
        instance = new ModelInstance(model);

// model = new G3dModelLoader(new UBJsonReader()).loadModel(Gdx.files.internal("data/g3d/knight.g3db"));
// instance = new ModelInstance(model);

        Gdx.input.setInputProcessor(new InputMultiplexer(this, inputController = new CameraInputController(cam)));
    }

@Override
public void create() {
    INSTANCE=this;

    Debug.dbg("Path: "+System.getProperty("user.dir"));

    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));

    staticEntityBatch = new ModelBatch();

    cam = new PerspectiveCamera(67, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
    float cameraDist=0.8f;
    cam.position.set(cameraDist,cameraDist,cameraDist);
    cam.lookAt(0,0,0);
    cam.near = 0.1f;
    cam.far = 300f;
    cam.update();

    Assets.modelBuilder = new ModelBuilder();
    Model world = Assets.modelBuilder.createSphere(2f,2f,2f, 
            80, 80, /* 80x80 seems to be enough polys to look smooth */
            new Material(ColorAttribute.createDiffuse(Color.GREEN)),
            Usage.Position | Usage.Normal);
    models.add(world);

    planetSurface = new ModelInstance(world);

    camController = new CameraController(cam);
    Gdx.input.setInputProcessor(camController);

    space=new Space();
}

private void createMeshes() {
    ModelBuilder mb = new ModelBuilder();
    cubeModel = mb.createBox(1, 1, 1, new Material(),
            VertexAttributes.Usage.Position |
                    VertexAttributes.Usage.Normal |
                    VertexAttributes.Usage.TextureCoordinates);
    cubeMesh = cubeModel.meshes.first();

    G3dModelLoader modelLoader = new G3dModelLoader(new UBJsonReader());
    quadModel = modelLoader.loadModel(Gdx.files.internal("models/quad.g3db"));
    quadMesh = quadModel.meshes.first();
}