[vtkusers] Three vtkRenderer in one vtkRenderWindow

[stefano mininel]

In my apps multiple renderers always worked well (w/o strange clippings), but I "link" the
cameras by just letting ren1 create its default "optimal" camera and syncronizing positions
with:

    ren2->SetActiveCamera(ren1->GetActiveCamera());
    ren3->SetActiveCamera(ren1->GetActiveCamera());
    pLight->SetPosition(ren1->GetActiveCamera()->GetPosition());
    ren1->AddLight(pLight);
    ren2->AddLight(pLight);
    ren3->AddLight(pLight);

Hoping this helps!
Greetings

    Stefano Mininel


Chunyan Jiang wrote:

> Hi, everybody,
> My aim is to render three objects in the different part of one window and
> interact on them together.
> So I set one camera to these three vtkRenderer. It works now. However, I
> still have one question. In order to explain my question clear, I name the
> vtkRenderer as ren1, ren2, ren3. There is one special vtkRenderer which is
> quite different with the others. I name it as ren1. When I put mouse in the
> area of ren1 and click the left button, they will rotate together. It is ok.
> However, when I put the mouse in the ren2 or ren3 and click the left button,
> they will also rotate, but the ren1's object will be cliped badly, the other
> two rens' will not. I guess that it maybe because the camera's near plane
> and far plane. But why does it not effect the other two objects? Why has the
> vtkRenderWindowInteractor different effect in different render area?
> I hope some one could do me a favor and giving me one hint. Thanks a lot!
> The following is the part of my code.
>
>         renWin=vtkRenderWindow::New();
>       iren = vtkRenderWindowInteractor::New();
>       iren->SetRenderWindow(renWin);
>         Camera = vtkCamera::New();
>       Camera->SetPosition(0,0,-100  );
>       Camera->SetFocalPoint( 0,0,0 );
>         Camera->SetThickness(2000);
>       Camera->Dolly(0.15);
>
>         ren1=vtkRenderer::New();
>         ren2=vtkRenderer::New();
>         ren3=vtkRenderer::New();
>         renWin->AddRenderer(ren1);
>         renWin->AddRenderer(ren2);
>         renWin->AddRenderer(ren3);
>         ren1->SetActiveCamera(Camera);
>         ren2->SetActiveCamera(Camera);
>         ren3->SetActiveCamera(Camera);
>         ren1->SetViewport(0.5,0,1.0,1.0);
>         ren2->SetViewport(0,0,0.5,0.5);
>         ren3->SetViewport(0,0.5,0.5,1);
>
>         iren->SetRenderWindow(renWin);
>         iren->Start();
>         renWin->Render();
>
> ...
>
> Chunyan
> ***********************************************************************
> Chunyan Jiang, Dipl.-Inform.,
> Institut for Telematic
> Bahnhofstrasse 30-32, D-54292 Trier, Germany
> Phone: (+49) (0)651-97551-34
> Fax: (+49) (0)651-97551-12
> ***********************************************************************
>
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