[vtkusers] select individual iso-lines

[Dean Inglis]

Hi,

thanks, vtkPolyDataConnectivityFilter does the trick
I'm just not sure how to get each one separately from
the same filter so that the data persists for both:

 m_contour->SetInput(temp);
 m_contour->ComputeScalarsOff();
 m_contour->ComputeGradientsOff();
 m_contour->ComputeNormalsOff();
 m_contour->SetValue(0,0.5);
 m_contour->SetNumberOfContours(1);
 m_contour->Update();

 m_stripper->SetInput(m_contour->GetOutput());  
 m_stripper->Update();  // the stripper generates two vtkPolyLine cells

 m_connectivityFilter->SetExtractionModeToCellSeededRegions();
 m_connectivityFilter->SetInput(m_stripper->GetOutput());
 m_connectivityFilter->InitializeSeedList();
 m_connectivityFilter->AddSeed(0);
 m_connectivityFilter->Update();

 m_periosteumMapper->SetInput(m_connectivityFilter->GetOutput());
 
 m_periosteumActor->SetMapper(m_periosteumMapper);

 m_connectivityFilter->InitializeSeedList();
 m_connectivityFilter->AddSeed(1);
 m_connectivityFilter->Update();

 m_endosteumMapper->SetInput(m_connectivityFilter->GetOutput());

 m_endosteumActor->SetMapper(m_endosteumMapper);
 

So what I get is the endosteum and not the periosteum too...

Dean