Hi,

try this:

// Mouse Translate
        MouseTranslate m_trans = new MouseTranslate();
        m_trans.setTransformGroup(yourBranch);
        m_trans.setSchedulingBounds(new BoundingBox());
        my_BG.addChild(m_trans);
        // Mouse Zoom
           /*
              INSTRUCTION:
              Press ALT+Mouse Up|Down to zoom in|out
           */
        MouseZoom m_zoom = new MouseZoom();
        m_zoom.setTransformGroup(yourBranch);
        m_zoom.setSchedulingBounds(new BoundingBox());
        my_BG.addChild(m_zoom);
        // Mouse Rotate
        MouseRotate m_rot = new MouseRotate();
        m_rot.setTransformGroup(yourBranch);
        m_rot.setSchedulingBounds(new BoundingBox());
        my_BG.addChild(m_rot);


if this doesn�t work tell me. In my code it works fine!

bernd

 >  Hi, all
 >
 >  Big problem: I have a scattered data points displayed in a
 >  scene, and I use the J3D mouse behaviors  classes
 >  to zoom translate and rotate it.
 >  And I would like to know why I don't see these points disappear
 >  when I zoom out with the mouse?
 >  The same event occurs with a Shape3D e.g ColorCube(1).
 >
 >  Any help will be Appreciate
 >
 >  Thanks all
 >
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