[vtkusers] vtkImageViewer2 trouble with QVTKWidget

[Francois Bertel]

You have to set the interactor before the first call to Render().


On Fri, Apr 30, 2010 at 8:14 PM, Antonin Perrot-Audet
<antonin07130 at gmail.com> wrote:
> Hello,
> I have some trouble using the QVTKWidget with a vtkImageViewer2 :
> I am able to render an image in the QVTKWidget, but if I try to setup an
> interactor, the application freezes :
> --------
>  vtkImgViewer2->SetupInteractor(this->qvtkWidget_a->GetRenderWindow()->GetInteractor());
> --------
> I have seen several mails about using vtkImageViewer2 and QT, even from
> Luis, but there seems to be no solution yet ?
> Should I use a vtkImageViewer instead ?
>
> Here is a short version of my code : vtkImage is a pointer towards a
> vtkImageData, given as an argument
> --------
> vtkSmartPointer<vtkImageViewer2> vtkImgViewer2 =
> vtkSmartPointer<vtkImageViewer2>::New();
> vtkImgViewer2->SetInput(vtkImage);
> vtkImgViewer2->Render();
>  // makes the program crash :
>  //vtkImgViewer2->SetupInteractor(this->qvtkWidget_a->GetRenderWindow()->GetInteractor());
> this->qvtkWidget_a->SetRenderWindow(vtkImgViewer2->GetRenderWindow());
> --------
>
> So that I now have the weird behavior that I can display an image and
> interact with it as a 3D object ....
>
> The vtkImageData seems to be provided just fine as I can display the image
> with the wrong interactor, so it doesn't seem to be a pipeline problem ?
> I also tried declaring an interactor of vtkImageInteractorStyle, and
> attributing it to both the vtkImageViewer2 and the QVTKWidget, with the same
> results.
>
> *any idea or even experience using these tools would be greatly
> appreciated,*
>
> Thanks,
>
> Antonin
>
>
> --
> Antonin Perrot-Audet
> Electrical Engineering&  Computer Sciences, INSA Lyon
> M2 GEGP Signal&  Image Processing, INSA Lyon, UCBL, Centrale Lyon
>
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