Hi Olli,

unfortunately I can't help you.
I'm myself strugglich around with trackball manipulator.
This class is missing a lot of functionality for external influence.
There is no interface to:

- initiate rotation of trackbal easily by some external methods
  (was also no response on the list)
- stop throw status by method

Unfortunately I'm not good enough in Matrix operations to understand how to do 
this by the given get-/setMatrix calls. So far I failed doing it as desired. 
Reading the source code of trackball manipulator didn't help me.

- Werner -

On Friday 27 August 2010 14:56:55 O. Baum wrote:
> Hi all,
> 
> I am sorry to ask again, but I am just wondering why no one replied...
> Did I ask (a) wrong or frequently answered question(s)?
> Did I ask (a) question(s), that is/are answered somewhere else? (If
> yes, I would appreciate a pointer to that place, Google didn't help
> me...)
> Maybe did I ask in a wrong way?
> 
> I am new to this list and a OSG newbie...
> 
> With best regards,
> 
>    O. Baum
> 
> 2010/8/25 O. Baum <ol...@freenet.de>:
> > Hallo list,
> > 
> > can anyone tell me how to restrict the rotation of the
> > TrackballManipulator e.g. to the z-Axis (Yaw)?
> > 
> > Another question:
> > How can I prevent the TrackballManipulator from zooming and panning?
> > Is there another way than deriving an own class from
> > TrackballManipulator and overwriting the calcMovement() method?
> > 
> > Thank you very much in advance for your replies!
> > 
> > With best regards,
> > 
> >    -oli-
> 
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> osg-users@lists.openscenegraph.org
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