thank your's reply

please tell me how can i support .ktx texture file.

i check this code times,and find the reason
i set cam.lookAt(sphere.getTransformedCenter());
so when sphere move,it looks strange,sorry for my poor english :)and thanks a lot.
if i want the sphere light itself like sun,when i set light in the center of the sphere ,it cannot work ,how can i achieve that.

i donnot how to post my skin.3DS file and preview file.otherwise,i can post these file,canyou show the step how to upload files?

please check my code,thanks a lot
public class HelloWorld extends Activity {

   // Used to handle pause and resume...
   private static HelloWorld master = null;

   private GLSurfaceView mGLView;
   private MyRenderer renderer = null;
   private FrameBuffer fb = null;
   private World world = null;
   private RGBColor back = new RGBColor(0, 0, 0);

   private float touchTurn = 0;
   private float touchTurnUp = 0;

   private float xpos = -1;
   private float ypos = -1;

   private Object3D sphere = null;
   private Object3D thing1 = null;
   private Object3D sky = null;
   private int fps = 0;

   private Light sun = null;
   private float ind = 0;
   protected void onCreate(Bundle savedInstanceState) {

      Logger.log("onCreate");

      if (master != null) {
         copy(master);
      }

      super.onCreate(savedInstanceState);
      mGLView = new GLSurfaceView(getApplication());

      mGLView.setEGLConfigChooser(new GLSurfaceView.EGLConfigChooser() {
         public EGLConfig chooseConfig(EGL10 egl, EGLDisplay display) {
            // Ensure that we get a 16bit framebuffer. Otherwise, we'll fall
            // back to Pixelflinger on some device (read: Samsung I7500)
            int[] attributes = new int[] { EGL10.EGL_DEPTH_SIZE, 16, EGL10.EGL_NONE };
            EGLConfig[] configs = new EGLConfig[1];
            int[] result = new int[1];
            egl.eglChooseConfig(display, attributes, configs, 1, result);
            return configs[0];
         }
      });

      renderer = new MyRenderer();
      mGLView.setRenderer(renderer);
      setContentView(mGLView);
   }

   @Override
   protected void onPause() {
      super.onPause();
      mGLView.onPause();
   }

   @Override
   protected void onResume() {
      super.onResume();
      mGLView.onResume();
   }

   @Override
   protected void onStop() {
      super.onStop();
   }

   private void copy(Object src) {
      try {
         Logger.log("Copying data from master Activity!");
         Field[] fs = src.getClass().getDeclaredFields();
         for (Field f : fs) {
            f.setAccessible(true);
            f.set(this, f.get(src));
         }
      } catch (Exception e) {
         throw new RuntimeException(e);
      }
   }

   public boolean onTouchEvent(MotionEvent me) {

      if (me.getAction() == MotionEvent.ACTION_DOWN) {
         xpos = me.getX();
         ypos = me.getY();
         return true;
      }

      if (me.getAction() == MotionEvent.ACTION_UP) {
         xpos = -1;
         ypos = -1;
         touchTurn = 0;
         touchTurnUp = 0;
         return true;
      }

      if (me.getAction() == MotionEvent.ACTION_MOVE) {
         float xd = me.getX() - xpos;
         float yd = me.getY() - ypos;

         xpos = me.getX();
         ypos = me.getY();

         touchTurn = xd / -100f;
         touchTurnUp = yd / -100f;
         return true;
      }

      try {
         Thread.sleep(15);
      } catch (Exception e) {
         // No need for this...
      }

      return super.onTouchEvent(me);
   }

   protected boolean isFullscreenOpaque() {
      return true;
   }

   class MyRenderer implements GLSurfaceView.Renderer {

      private long time = System.currentTimeMillis();
      private float rotateV=0;
      public MyRenderer() {
      }

      public void onSurfaceChanged(GL10 gl, int w, int h) {
         if (fb != null) {
            fb.dispose();
         }
         fb = new FrameBuffer(gl, w, h);

         if (master == null) {

            world = new World();
            world.setAmbientLight(20, 20, 20);

            sun = new Light(world);
            sun.setIntensity(250, 250, 250);
           
            Resources res = getResources();
            // Create a texture out of the icon...:-)
            //Texture texture = new Texture(BitmapHelper.rescale(BitmapHelper.convert(getResources().getDrawable(R.drawable.icon)), 64, 64));
            Texture texture = new Texture(res.openRawResource(R.raw.planetex));

            TextureManager.getInstance().addTexture("texture", texture);           
            TextureManager.getInstance().addTexture("sky", new Texture(res.openRawResource(R.raw.sky)));
            TextureManager.getInstance().addTexture("thing1T", new Texture(res.openRawResource(R.raw.disco)));
         
            sphere=Loader.load3DS(res.openRawResource(R.raw.skin), 1f)[0];

            //sphere.translate(0, 25, 0);
            sphere.rotateX((float) -Math.PI / 2);
            sphere.setTexture("texture");
            sphere.strip();
            sphere.build();
            world.addObject(sphere);
                     
            Camera cam = world.getCamera();
            cam.moveCamera(Camera.CAMERA_MOVEOUT,40);
            cam.lookAt(sphere.getTransformedCenter());
            SimpleVector sv = new SimpleVector();
            sv.set(sphere.getTransformedCenter());
            //sv.y -= 100;
            sv.x += 50;
            sv.z -= 200;
            sun.setPosition(sv);
            MemoryHelper.compact();

            if (master == null) {
               Logger.log("Saving master Activity!");
               master = HelloWorld.this;
            }
         }
      }

      public void onSurfaceCreated(GL10 gl, EGLConfig config) {
      }

      public void onDrawFrame(GL10 gl) {
//         animate();
         if (touchTurn != 0) {
            sphere.rotateY(touchTurn);
            touchTurn = 0;
         }

         //sphere.rotateY(0.02f);
         /*if (touchTurnUp != 0) {
            cube.rotateX(touchTurnUp);
            touchTurnUp = 0;
         }*/

         fb.clear(back);
         world.renderScene(fb);
         world.draw(fb);
         fb.display();

         if (System.currentTimeMillis() - time >= 1000) {
            Logger.log(fps + "fps");
            fps = 0;
            time = System.currentTimeMillis();
         }
         fps++;
      }
}


as this code if i use this //sphere.translate(0, 25, 0); ,the sphere will looks very strange.

and the skin.3DS is created by myshelf ,i do this first time .if skin.3DS file's content  also can affect translate?

please help me,
            sphere=Loader.load3DS(res.openRawResource(R.raw.skin), 1f)[0];

            sphere.translate(0, 25, 0);//want to move
            sphere.rotateX((float) -Math.PI / 2);
            sphere.setTexture("texture");
my code is like this,when i call sphere.translate(0, 25, 0);the sphere  rotate a little,it didnot move,why?
but i can move object: thing1 = Loader.loadMD2(res.openRawResource(R.raw.thingmd), 0.4f);
                                                        thing1.translate(0, -25, 0);
            thing1.rotateY((float) Math.PI / 3);
            thing1.setTexture("thing1T");
it's so confused me.