>    * I could not set the viewplatform so that the object I built in
>      branch content could not be seen.  I have applied the method
>      setNominalViewingTransform(), the object could be seen but too
>      nearfrom the screen, so I could not see the whole object.

Hi,

If you create a transform group from a transform3D object you can move
the whole seen back along the z axis by placing it at the very top of
your scene graph. i.e.

Transform3D zMove = new Transform3D()
zMove.set( new Vector3f( 0.0f,0.0f,-3.0f) );
TransformGroup zTrans = new TransformGroup( zMove )

add this transform group to the root of your graph, the add everything
else onto this transform group( zTrans ).  This should work, i have done
this, but i am not sure if it id the best way.

Dave
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