[vtkusers] QVTKWidget signal/slot question

[Wagner Sales]

Hi all,

That's not an answer, but an advise: like last mail from Luis, NEVER use VTK
with compiz and other high detail graphic effects enabled. You can get in
any sort of very obscure troubles (not only about performance, but crashes,
layout problems, rendering problems), and spent a lot of time to nothing. I
spent more than two days to discover this, because that I'm posting on the
list.

Regards,

Wagner

2009/3/18 Luis Roberto P. Paula <luisrpp at gmail.com>

> Are you using it on linux with compiz-fusion or high detail graphic effects
> enabled?
>
> It happened to me too until I disable compiz.
>
> - Luis
>
> On Wed, Mar 18, 2009 at 6:12 PM, John Eke <johne at annidis.com> wrote:
>
>>  Hi,
>>
>> I currently have a Qt dialog with a slider. The valueChanged signal from
>> this slider is connected to a slot in my QVTKWidget subclass which performs
>> some Window-Level modifications on a vtkImageActor inside the renderer.
>>
>> In the vtk example (Examples/GUI/Qt/ImageViewer) dragging the mouse across
>> the image is fast enough. So why does it get ridiculously slow when I send
>> the commands through a slot? Is there a way I can speed it up?
>>
>> - John E
>>
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>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the VTK FAQ at:
> http://www.vtk.org/Wiki/VTK_FAQ
>
> Follow this link to subscribe/unsubscribe:
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