[vtkusers] How to open multiple VTK windows at once?

[Jérôme]

Hi,

I never used it, but maybe you can try to execute one thread per rendering.
I think there is a vtkMultiThread object, or something like that, that
allows several function calls in different threads. That's the first idea.

Second idea : You can use several renderer in a renderwindow. Just set the
viewports (size of the renderer). Finally, you won't have 2 windows, but
only one with 2 areas. But in this case, you have to implement the whole
rendering pipeline.

HTH.

Jerome

2009/8/20 Maxima Mustermann <Maxima.M at gmx.de>

> Hi,
>
> I want to show 2 images at once in 2 separate windows but that does not
> seem to be possible.
> When I open the first viewer, the interactor takes control over the program
> and the other viewer opens only when I have closed the first one.
> To be true, I don't really need an interactor (I only want to show the
> image), but without interactor the window disappears immediately.
>
> My code:
>
> vtkImageViewer2* viewerA = vtkImageViewer2::New();
> vtkRenderWindowInteractor* interactorA = vtkRenderWindowInteractor::New();
> viewerA->SetupInteractor(interactorA);
>
> vtkImageViewer2* viewerB = vtkImageViewer2::New();
> vtkRenderWindowInteractor* interactorB = vtkRenderWindowInteractor::New();
> viewerB->SetupInteractor(interactorB);
>
> viewerA->SetInput(imageA);
> viewerB->SetInput(imageB);
>
> viewerA->Render();
> interactorA->Start();
>
> viewerB->Render();
> interactorB->Start();
>
> This is a *very* simple problem, but I did not found a corresponding topic
> in the FAQ or the mailing list.
> I want to keep my code as simple as possible, so if there is a way I would
> prefer to do it without the use of additional GUI toolkits.
>
> Thank you very much.
> --
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