[vtkusers] help with marchingcubes with dicom slices set

[Rodrigo Lovera]

I'm developing this project in c++, where I dont have that vtkcanvas class,
what can I do to use something similar??



2012/11/19 kingvsk at aol.com <kingvsk at aol.com>

>  Please comment the following lines from that code.
>
>         //vpanSurface.GetRenderWindow().StereoCapableWindowOn();
>         ////vpanSurface.GetRenderWindow().SetStereoTypeToAnaglyph();
>         //vpanSurface.GetRenderWindow().SetStereoTypeToCrystalEyes();
>         //vpanSurface.GetRenderWindow().SetStereoRender(1);
>
> These lines are used to enable stereo 3D view.  Sorry for the trouble.
>
> --
> Sathish
>
>
> On Monday 19 November 2012 10:33 AM, kingvsk at aol.com wrote:
>
> Hi
>
> Try this code... It works fine for me...
>
> <code>
> private void DisplaySurface(int val, double opacityValue, double redValue,
> double greenValue, double blueValue) {
>         reader = new vtkDICOMImageReader();
>         if (new File(directoryName).isDirectory()) {
>             reader.SetDirectoryName(directoryName);
>             reader.Update();
>         } else {
>             LOG.log(Level.WARNING, "Please select a directory");
>         }
>         reader.GetOutput().ReleaseDataFlagOn();
>
>         // For Outline...
>         vtkOutlineFilter outline = new vtkOutlineFilter();
>         outline.SetInput(reader.GetOutput());
>
>         vtkPolyDataMapper outlineMapper = new vtkPolyDataMapper();
>         outlineMapper.SetInput(outline.GetOutput());
>
>         vtkActor outlineActor = new vtkActor();
>         outlineActor.SetMapper(outlineMapper);
>
>         mCube = new vtkMarchingCubes();
>         mCube.SetInput(reader.GetOutput());
>         mCube.SetValue(0, val);
>         mCube.ComputeNormalsOn();
>         mCube.ComputeGradientsOff();
>         mCube.UpdateWholeExtent();
>
>         vtkPolyDataMapper pdMapper = new vtkPolyDataMapper();
>         pdMapper.SetInput(mCube.GetOutput());
>         pdMapper.ImmediateModeRenderingOn();
>         pdMapper.ScalarVisibilityOff();
>
>         // Create and Add Surface Actor...
>         vtkActor actor = new vtkActor();
>         actor.GetProperty().SetOpacity(opacityValue);
>         actor.GetProperty().SetColor(redValue, greenValue, blueValue);
>         actor.SetMapper(pdMapper);
>
>         vtkCanvas vpanSurface = new vtkCanvas();
>         vpanSurface.GetRenderer().AddActor(actor);
>         vpanSurface.GetRenderWindow().StereoCapableWindowOn();
>         //vpanSurface.GetRenderWindow().SetStereoTypeToAnaglyph();
>         vpanSurface.GetRenderWindow().SetStereoTypeToCrystalEyes();
>         vpanSurface.GetRenderWindow().SetStereoRender(1);
>
> vpanSurface.GetRenderWindow().AddRenderer(vpanSurface.GetRenderer());
>
>         // Add the outline actor to the renderer and size...
> // Here pnlSurfaceViewer is a JPanel...
>         vpanSurface.GetRenderer().AddActor(outlineActor);
>         vpanSurface.GetRenderer().ResetCamera();
>         pnlSurfaceViewer.add(vpanSurface);
>         pnlSurfaceViewer.setVisible(true);
>     }
> </code>
>
> --
> Sathish
>
>
> On Saturday 17 November 2012 10:35 PM, Rodrigo Lovera wrote:
>
> I tried with your values, but now i'm getting a black screen, no volume or
> shape at all.
>
>
>
>  Rodrigo Lovera Sandoval
>
>
>  2012/11/16 kingvsk at aol.com <kingvsk at aol.com>
>
>>  Hi
>>
>> Change the value in following line.
>> surface->SetValue(0, 5);
>>
>> Instead of 5 you can use 500 (Bone) or -500 (Skin).
>>
>> That is, try either *surface->SetValue(0, 500);* or *surface->SetValue(0,
>> -500); *
>>
>> --
>> Sathish
>>
>>
>> On Saturday 17 November 2012 02:46 AM, Rodrigo Lovera wrote:
>>
>>
>> Hello everyone,
>>
>>  I've got a set of dicom slices which I use for rendering a volume, now
>> I tried to apply marching cubes to try surface rendering buy i'm only
>> getting some kind of box and not the head that shold be forming.
>>
>>  I'm using atm the following code
>>
>>  vtkSmartPointer< vtkDICOMImageReader > reader =
>>  vtkSmartPointer< vtkDICOMImageReader >::New();
>>  reader->SetDataByteOrderToLittleEndian();
>>  //reader->SetDirectoryName(argv[1]);
>>  reader->SetDirectoryName("C:\\VTK5.10\\DATA\\DICOM");
>>  reader->SetDataSpacing(1, 1, 1);
>>  reader->SetDataOrigin(0.0, 0.0, 0.0);
>>  reader->Update();
>>
>>  vtkSmartPointer< vtkMarchingCubes > surface =
>>  vtkSmartPointer< vtkMarchingCubes >::New();
>>  surface->SetInputConnection(reader->GetOutputPort());
>>  surface->ComputeNormalsOn();
>>  surface->SetValue(0, 5);
>>   vtkSmartPointer< vtkRenderer > surfacerenderer =
>>  vtkSmartPointer< vtkRenderer >::New();
>>  surfacerenderer->SetBackground(0.1, 0.2, 0.3);
>>
>>  vtkSmartPointer< vtkRenderWindow > renderwin =
>>  vtkSmartPointer< vtkRenderWindow >::New();
>>  renderwin->AddRenderer(surfacerenderer);
>>   vtkSmartPointer< vtkRenderWindowInteractor > intersurf =
>>  vtkSmartPointer< vtkRenderWindowInteractor >::New();
>>  intersurf->SetRenderWindow(renderwin);
>>
>>  vtkSmartPointer< vtkPolyDataNormals > premapper =
>>  vtkSmartPointer< vtkPolyDataNormals >::New();
>>  premapper->SetInputConnection(surface->GetOutputPort());
>>  premapper->ComputeCellNormalsOn();
>>   vtkSmartPointer< vtkPolyDataMapper > surfacemapper =
>>  vtkSmartPointer< vtkPolyDataMapper >::New();
>>  surfacemapper->SetInputConnection(premapper->GetOutputPort());
>>  //surfacemapper->SetInputConnection(surface->GetOutputPort());
>>
>>  vtkSmartPointer< vtkActor > actor =
>>  vtkSmartPointer< vtkActor >::New();
>>  actor->SetMapper(surfacemapper);
>>
>>  vtkSmartPointer< vtkProperty > backFaces =
>>  vtkSmartPointer< vtkProperty >::New();
>>  backFaces->SetSpecular(0.0);
>>  backFaces->SetDiffuse(0.0);
>>  backFaces->SetAmbient(1.0);
>>  backFaces->SetAmbientColor(1.0000, 0.3883, 0.2784);
>>  backFaces->SetOpacity(256);
>>
>>  actor->SetBackfaceProperty(backFaces);
>>
>>  surfacerenderer->AddActor(actor);
>>  renderwin->SetSize(800,600);
>>  //renderWindow->Render();
>>  intersurf->Start();
>>
>>  this->ui->vtksurface->GetRenderWindow()->AddRenderer(surfacerenderer);
>>
>>  I'd appreciate any kind of help, example code or advice. Thx in advance.
>>
>>  --
>> *Rodrigo Lovera *
>>
>>
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>>
>>
>
>
>  --
> *Rodrigo aka WarHearT*
>
>
>
>


-- 
*Rodrigo aka WarHearT*
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