[vtkusers] python vtk BadRequest

[Eleftherios Garyfallidis]

Hi David,

Are you suggesting, that I need to catch when window_exit is pressed and
remove the renderer from the window then or is there a different way?

Thank you,
Eleftherios


On Tue, Jul 19, 2011 at 5:46 PM, David Gobbi <david.gobbi at gmail.com> wrote:

> Hi Eleftherios,
>
> You are re-using the vtkRenderer but constantly re-creating
> the vtkRenderWindow and the interactor?  You should call
> window.RemoveRenderer(ren) to disconnect the window from
> the renderer once you are finished with the window.  I suspect
> that, because you are not doing this, you are ending up with a
> whole bunch of render windows that are closed but not destroyed,
> because they are still associated with the renderer.
>
>  - David
>
>
> On Tue, Jul 19, 2011 at 10:21 AM, Eleftherios Garyfallidis
> <garyfallidis at gmail.com> wrote:
> > Dear vtk users,
> >
> > I am getting the following error for some time using python-vtk with
> > libvtk5.4 in ubuntu 10.10
> >
> > X Error of failed request: BadRequest (invalid request code or no such
> > operation)
> > Major opcode of failed request: 0 ()
> > Serial number of failed request: 30
> > Current serial number in output stream: 32
> >
> > This crashing error comes randomly usually after I have executed the
> > following function for a few times.
> >
> > def show(ren,title='dipy.viz.fvtk',size=(300,300),png_magnify=1):
> >     ''' Show window
> >     '''
> >
> >     ren.ResetCamera()
> >     window = vtk.vtkRenderWindow()
> >     window.AddRenderer(ren)
> >     window.SetWindowName(title)
> >     window.SetSize(size[0],size[1])
> >     style=vtk.vtkInteractorStyleTrackballCamera()
> >     iren = vtk.vtkRenderWindowInteractor()
> >     iren.SetRenderWindow(window)
> >     iren.SetPicker(picker)
> >
> >     def key_press(obj,event):
> >
> >         key = obj.GetKeySym()
> >         if key=='s' or key=='S':
> >             print('Saving image...')
> >             renderLarge = vtk.vtkRenderLargeImage()
> >             renderLarge.SetInput(ren)
> >             renderLarge.SetMagnification(png_magnify)
> >             renderLarge.Update()
> >             writer = vtk.vtkPNGWriter()
> >             writer.SetInputConnection(renderLarge.GetOutputPort())
> >             writer.SetFileName('fvtk.png')
> >             writer.Write()
> >             print('Look for fvtk.png in your current working directory.')
> >
> >
> >     iren.AddObserver('KeyPressEvent',key_press)
> >     iren.SetInteractorStyle(style)
> >     iren.Initialize()
> >     picker.Pick(85, 126, 0, ren)
> >     window.Render()
> >     iren.Start()
> >
> > I would appreciate very much any help on that issue. Please let me know
> if
> > you have any ideas.
> >
> > Best wishes,
> > Eleftherios
>
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