[vtkusers] interrupt the vtkRenderWindowInteractor?

[Steven.Aston at tessella.com]

Hello,

I am new to  VTK, so please be patient with this question.

I have written a small application in Java (1.4.1) which has a swing GUI
which runs in the main thread and a vtkRenderWindow (using vtk 4.0) which
runs in a separate thread.  These windows are displayed simultaneously.  I
would like the user to be able to interact directly with the image in the
render window via a vtkRenderWindowInteractor (which works) but also allow
the image to be manipulated from elsewhere, such as being automatically
rotated on  a button press from the GUI (which doesn't work, unless a
window resize is also invoked).

I understand that the interactor has its own event loop, so simply updating
the active camera angle of the renderer and calling render doesn't work
because this is outside the interactors event loop.  How should I go about
interrupting or adding to the interactor, is this a question of adding an
observer? I would very much appreciate any suggestions.

Thanks in advance.

Steve


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