[vtkusers] Qt & VTK Intereaction problem

[Jothy]

Can you try m_pQVTKWidget->show()

Jothy

On Fri, Jul 22, 2011 at 1:31 PM, al.gry <al.gry at web.de> wrote:
> Hi all,
> I'm new to VTK and Qt. Now to my problem, I'm trying to visualize 3d volume
> from dicom files  using vtk in qt. So far it goes fine but I cannot rotate
> the scene or do other interactions except zooming. If I use the same code
> without Qt everything works. I searched in the mailing list and found some
> hints but nothing I can work with.
>
> m_pRenWin = vtkSmartPointer<vtkRenderWindow>::New();
>  m_pQVTKWidget->SetRenderWindow(m_pRenWin);
>  m_pIren = vtkSmartPointer<vtkRenderWindowInteractor>::New();
>  m_pIren->SetRenderWindow(m_pQVTKWidget->GetRenderWindow());
>  m_pRen = vtkSmartPointer<vtkRenderer>::New();
>  m_pQVTKWidget->GetRenderWindow()->AddRenderer(m_pRen);
>
> vtkSmartPointer<vtkAlgorithm> m_reader =
> vtkSmartPointer<vtkAlgorithm>::New();
>  m_reader = m_pDicomReader;
>    vtkSmartPointer<vtkImageData> input =
> vtkSmartPointer<vtkImageData>::New();
>    input = m_pDicomReader->GetOutput();
>
>    int dim[3];
>    input->GetDimensions(dim);
>    if( (dim[0] < 2)||(dim[1] < 2)||(dim[2] < 2))
>    {
>      QMessageBox::information(this, tr("Error"), tr("Wrong dimension!"));
>      return;
>    }
>
>    // Create our volume and mapper
>    vtkSmartPointer<vtkVolume> volume = vtkSmartPointer<vtkVolume>::New();
>    vtkSmartPointer<vtkFixedPointVolumeRayCastMapper> mapper =
> vtkSmartPointer<vtkFixedPointVolumeRayCastMapper>::New();
>
>    mapper->SetInputConnection( m_reader->GetOutputPort() );
>
>    double spacing[3];
>    input->GetSpacing(spacing);
>
>    vtkSmartPointer<vtkColorTransferFunction> colorFun =
> vtkSmartPointer<vtkColorTransferFunction>::New();
>    vtkSmartPointer<vtkPiecewiseFunction> opacityFun =
> vtkSmartPointer<vtkPiecewiseFunction>::New();
>
>    vtkSmartPointer<vtkVolumeProperty> property =
> vtkSmartPointer<vtkVolumeProperty>::New();
>    bool independentComponents=true;
>    property->SetIndependentComponents(independentComponents);
>    property->SetColor( colorFun );
>    property->SetScalarOpacity( opacityFun );
>    property->SetInterpolationTypeToLinear();
>
>    // connect up the volume to the property and the mapper
>    volume->SetProperty( property );
>    volume->SetMapper( mapper );
>
>    double opacityWindow = 4096.0;
>    double opacityLevel = 2048.0;
>
>    colorFun->AddRGBSegment(0.0, 1.0, 1.0, 1.0, 255.0, 1.0, 1.0, 1.0 );
>    opacityFun->AddSegment( opacityLevel - 0.5*opacityWindow, 0.0,
> opacityLevel + 0.5*opacityWindow, 1.0 );
>    mapper->SetBlendModeToMaximumIntensity();
>
>    m_pIren = vtkSmartPointer<vtkRenderWindowInteractor>::New();
>    m_pIren->SetRenderWindow(m_pQVTKWidget->GetRenderWindow());
>    m_pIren->GetInteractorStyle()->SetDefaultRenderer(m_pRen);
>
>    //m_pQVTKWidget->GetRenderWindow()->Render();
>    m_pRen->AddVolume(volume);
>    m_pRen->ResetCamera();
>    m_pRen->Modified();
>
>    m_pQVTKWidget->GetRenderWindow()->Render();
>
>
> --
> View this message in context: http://vtk.1045678.n5.nabble.com/Qt-VTK-Intereaction-problem-tp4622853p4622853.html
> Sent from the VTK - Users mailing list archive at Nabble.com.
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