[vtkusers] Oblique slicing without vtkResliceImageViewer

[chasank]

Hi,

We have used this following pipeline in our former project for
visualization. Now, we need to add oblique slicing feature to our project.
However, we do not want to use vtkResliceImageViewer class to implement this
feature. How can we implement this feature without vtkResliceImageViewer? Do
you have any suggesstions?

    this->sagittalRenderer = vtkSmartPointer < vtkRenderer > :: New();
    this->sagittalRenderWindow = vtkSmartPointer < vtkRenderWindow > ::
New();
    this->sagittalInteractorStyle = vtkSmartPointer < InteractorImage > ::
New();

    this->sagittalRenderWindow->AddRenderer(this->sagittalRenderer);
    this->sagittalInteractorStyle->AutoAdjustCameraClippingRangeOn();

    vtkSmartPointer<SagittalEventCallBack> sagittalCallBack =
vtkSmartPointer<SagittalEventCallBack>::New();
    sagittalCallBack->SetRegionGrow(this);

    this->sagittalInteractorStyle->AddObserver(vtkCommand::WindowLevelEvent,
sagittalCallBack);
   
this->sagittalInteractorStyle->AddObserver(vtkCommand::StartWindowLevelEvent,
sagittalCallBack);
   
this->sagittalInteractorStyle->AddObserver(vtkCommand::ResetWindowLevelEvent,
sagittalCallBack);

    this->sagittalIren = vtkSmartPointer < vtkRenderWindowInteractor > ::
New();
    this->sagittalIren->SetInteractorStyle(this->sagittalInteractorStyle);
    this->sagittalIren->SetRenderWindow(this->sagittalRenderWindow);
   
this->mainWindow->GetUI()->sagittalWidget->SetRenderWindow(this->sagittalRenderWindow);

    int *ext = this->backupData->GetWholeExtent();

    this->sagittalActor = vtkSmartPointer < vtkImageActor > :: New();
    this->sagittalActor->SetInput(this->imgBlender->GetOutput());
    this->sagittalActor->SetOpacity( 1.0 );
    this->sagittalActor->SetDisplayExtent(ext[1]/2, ext[1]/2, ext[2],
ext[3], ext[4], ext[5]);

    this->sagittalPicker = vtkSmartPointer < vtkPropPicker > :: New();
    this->sagittalPicker->PickFromListOn();
    this->sagittalPicker->AddPickList(this->sagittalActor);

    vtkSmartPointer<SagittalROICallBack> roiCallBack =
vtkSmartPointer<SagittalROICallBack>::New();
    roiCallBack->SetRegionGrow(this);

    double *center = this->backupData->GetCenter();

    this->sagittalTracer = vtkSmartPointer<vtkImageTracerWidget>::New();
    this->sagittalTracer->SetInteractor(this->sagittalIren);
    this->sagittalTracer->SetViewProp(this->sagittalActor);
    this->sagittalTracer->GetLineProperty()->SetLineWidth(5.0);
    this->sagittalTracer->GetLineProperty()->SetColor(0, 0, 1);
    this->sagittalTracer->SetProjectionNormalToXAxes();
    this->sagittalTracer->SetHandlePosition(0, center[0], center[1],
center[2]);
    this->sagittalTracer->AddObserver(vtkCommand::EndInteractionEvent,
roiCallBack);
    this->sagittalTracer->Off();

    this->sagittalRenderer->AddViewProp(this->sagittalActor);
    this->sagittalRenderer->AddActor2D(this->colorBar);

    // ORIENTATION_YZ = 0
    this->sagittalCamera = this->sagittalRenderer->GetActiveCamera();
    this->sagittalCamera->SetFocalPoint(0.0, 0.0, 0.0);
    this->sagittalCamera->SetPosition(1.0, 0.0, 0.0);
    this->sagittalCamera->SetViewUp(0.0, 0.0, 1.0);
    this->sagittalRenderer->ResetCamera();

    this->sagittalIren->Initialize();
    this->sagittalRenderWindow->Render();

Sincerely.



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