使用min3d/Rajawali框架(android)在3d对象上旋转

dependencies {
    implementation 'org.rajawali3d:rajawali:1.1.309'
}

<org.rajawali3d.view.SurfaceView
    android:id="@+id/surface_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

public class MainActivity extends AppCompatActivity {
    private GLSurfaceView mGLSurfaceView;
    private MyRenderer mRenderer;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mGLSurfaceView = findViewById(R.id.surface_view);
        mRenderer = new MyRenderer(this);
        mGLSurfaceView.setEGLContextClientVersion(2);
        mGLSurfaceView.setRenderer(mRenderer);
        mGLSurfaceView.setRenderMode(GLSurfaceView.RENDERMODE_CONTINUOUSLY);
    }

    public class MyRenderer extends RajawaliRenderer {
        public MyRenderer(Context context) {
            super(context);
        }

        @Override
        protected void initScene() {
            // 添加3D对象
            Sphere sphere = new Sphere(1, 20, 20);
            sphere.setMaterial(new Material());
            sphere.setPosition(0, 0, -3);
            getCurrentScene().addChild(sphere);

            // 设置相机
            getCurrentCamera().setPosition(0, 0, 6);
            getCurrentCamera().setLookAt(sphere.getPosition());
        }
    }
}

public class MyRenderer extends RajawaliRenderer {
    private Sphere mSphere;

    public MyRenderer(Context context) {
        super(context);
    }

    @Override
    protected void initScene() {
        // 添加3D对象
        mSphere = new Sphere(1, 20, 20);
        mSphere.setMaterial(new Material());
        mSphere.setPosition(0, 0, -3);
        getCurrentScene().addChild(mSphere);

        // 设置相机
        getCurrentCamera().setPosition(0, 0, 6);
        getCurrentCamera().setLookAt(mSphere.getPosition());
    }

    @Override
    protected void onRender(long elapsedRealTime, double deltaTime) {
        super.onRender(elapsedRealTime, deltaTime);

        // 在每一帧更新3D对象的旋转属性
        mSphere.setRotY(mSphere.getRotY() + 1);
    }
}