[vtkusers] vtkMarchingCubes

[Amy Squillacote]

No, vtkMarchingCubes does not call vtkImageMarchingCubes or 
vtkDiscreteMarchingCubes. You can look at the implementation in 
vtkMarchingCubes::RequestData.

- Amy

meneghini wrote:
> I Suppose it could be possible that, since you are applying the marchingCubesalgorithm to an ImageData object, the class makes implicit calls either to theclass vtkImageMarchingCubes, or vtkDiscreteMarchingCubes...Am I wrong?
> On Fri, 9 Jan 2009 14:23:35 +0900 (WST), Peter F Bradshaw wrote> Hi Chen;> > On Thu, 8 Jan 2009, chens wrote:> > > We used the following codes for the surface generation of a medical object> > in DICOM files.> >> > The resultant 3D images were excellent.> >> > Originally, we thought that the marching cube algorithm was used for the> > surface generation of the medical object since the vtkMarchingCubes method> > was invoked.> >> > However, we were surprised that it seemed that the "vtkMarchingCubes" was> > not invoked when we set breakpoint in that method in the debugging mode.> > I am not sure that I fully understand why you think that vtkMarchingCubes> was not invoked. Looking at the code below I would say it most certainly> is.> > >> > Does anyone know whether the marching cube algorithm was used or not?  If it> > was, which method implements the marching cube algorithm?> > vtkMarchingCubes::RequestData()> > >> > How can we invoke marching cube algorithm in vtk? Are there any other sample> > codes?> >> > Thank you very much for your help.> >> > Chen> >> >> >> >> >> > vtkMarchingCubes *m_cube=vtkMarchingCubes::New();> >> >     vtkPolyData  *m_polydata=vtkPolyData::New();//define an object frm the> > filter> >> >     m_cube->SetValue(0,500); // set value corresponding  to which the> > isosurface will be created> >> >     m_cube->ComputeNormalsOff(); // turn Normals Creation off (u can do it> > later...and only if u  have light settings)> >> >     m_cube->ComputeGradientsOff(); // gradients off> >> >     m_cube->SetInput(m_reader->GetOutput()); // set input for the volume> > from which u'll extract iso surface> >> >     m_polydata= m_cube->GetOutput(); // get o/p (it's of polydata type)> >> >     m_polydata->Update();> >> >> >> >     vtkPolyDataMapper *m_polydataMapper = vtkPolyDataMapper::New();> >> >     m_polydataMapper->SetInput(m_polydata);> >> >     m_polydataMapper->SetScalarRange(0,7);> >> >     m_polydataMapper->Update();> >> > Cheers> > -- > Peter F Bradshaw: http://www.exadios.com (public keys avaliable > there). Personal site: http://personal.exadios.com "I love truth,>  and the way the government still uses it occasionally to keep us > guessing." - Sam Kekovich. _______________________________________________> This is the private VTK discussion list.> Please keep messages on-topic. Check the FAQ at: http://www.vtk.org/Wiki/VTK_FAQ> Follow this link to subscribe/unsubscribe:> http://www.vtk.org/mailman/listinfo/vtkusers
>
> Fabio Meneghinistudente post-laurea presso il Dipartimento di Elettronica, Elettrotecnica eInformaticaUniversità degli Studi di Trieste, Facoltà di Ingegneria
> _______________________________________________This is the private VTK discussion list.Please keep messages on-topic. Check the FAQ at: http://www.vtk.org/Wiki/VTK_FAQFollow this link to subscribe/unsubscribe:http://www.vtk.org/mailman/listinfo/vtkusers
>
>
>   

-- 
Amy Squillacote                    Phone: (256) 726-4839
Sr. Computer Scientist             Fax: (256) 726-4806
CFD Research Corporation           Web: http://www.cfdrc.com
215 Wynn Drive, Suite 501
Huntsville, AL  35805