[vtkusers] Updating the RenderWindows after user interaction

[Eric E. Monson]

Sebastian,

I think there may be some misunderstanding, then, of what you mean when you say that the user has altered "different options of the displayed objects", and what you mean by "update".

If, after user interaction, you still have a valid pipeline from sources through filters to render window, then when the render window is asked to render itself, it wants to make sure it has all the right information, so that request is propagated up the pipeline and any sources or filters that have been Modified and need to be updated will do so. This is way the standard "demand-driven" pipeline of VTK works.

So, that's why RenderWindow->Render(); was suggested. If this doesn't answer your question you may need to clarify what type of changes are being made to the pipeline and what needs to be "updated" so that it's more clear to us why executing the pipeline won't update all of its components.

-Eric

------------------------------------------------------
Eric E Monson
Duke Visualization Technology Group


On Apr 8, 2010, at 9:12 AM, Sebastian Gatzka wrote:

> Thanks for your answer.
> This is not what I meant. The new parameters incorporate even the objects visualilsed itself.
> So they will need to be created again as well.
> 
> I want to go through the pipeline to update it, not just to update the render window!
> 
> Am 08.04.2010 14:50, schrieb sercani:
>> 
>> 08.04.2010 15:29, Sebastian Gatzka yazmış:
>>> 
>>> Hello.
>>> 
>>> I made some callback functions which will allow the user to alter different options of the displayed objects.
>>> Is there a way to tell the complete render pipeline to update itself with the new set of settings?
>>> 
>>> Currently I will have to exit the Render Window and restart it to have the new settings applied.
>>> 
>>> Sebastian
>>>  
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>> 
>> perhaps RenderWindow->Render(); ?
> _______________________________________________
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> 
> Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html
> 
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