[vtkusers] problem using vtkRenderWindowInteractor with data updates under Java

[J.A. Lee]

You can look at TestVTKCanvas.java to see how 
vtkRenderWindowInteractor(vtkGenericRenderWindowInteractor) works with 
java's AWT event thread.  The examples are available in vtk4.x cvs.  How 
is your data updating?  Manually? in another process? on another thread? 
 If you are modifying the data on another thread, you must be very 
careful that the pipeline isn't trying to update (as a result of 
interaction) at the same time you are changing the data.  A good way to 
do this is to only use the AWT event thread to update the data set.
-Jeff
Alan wrote:

>
> Hi,
> I'm using vtk4.0 under Linux (RH7.2) with Java:, and I'm trying to 
> find a way to allow updates to my volume-rendered data while still 
> allowing the user to interact with object via a 
> vtkRenderWindowInteractor .  After searching this forum, it seems like 
> this may be possible using timers and an observer that updates the 
> data, but implementing this has proven to be very difficult due to 
> lack of sample code and possibly some vtk/X/Java interactions (eg, 
> threading).
>
> Can anyone point me toward a simple example of Java code that allows 
> data-updates (eg, to my volume rendered data) while allowing the user 
> to manipulate the object via the vtkRenderWindowInteractor?
>
> Thanks much.
>  --Alan
>
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