[vtkusers] Can't save after fillHoles filter

[Bill Lorensen]

If you read HoleFilled2.stl back into VTK are the holes still missing (in
the left view)?



On Sat, Aug 3, 2013 at 5:33 AM, andyjk <andrewkeeling at hotmail.com> wrote:

> I am applying vtkFillHolesFilter to an .stl file. (from the C++ example)
> This works fine when I view the result.
> However, when I save the output of fillHoles using vtkSTLWriter, and
> reload,
> the holes are back again! The same thing happens if I try to save it as a
> .ply file, so it looks like the output of fillHoles is getting sent to any
> of the vtkWriters.
>
> #include <vtkPolyData.h>
> #include <vtkSTLReader.h>
> #include <vtkSTLWriter.h>
> #include <vtkSmartPointer.h>
> #include <vtkPolyDataMapper.h>
> #include <vtkActor.h>
> #include <vtkRenderWindow.h>
> #include <vtkRenderer.h>
> #include <vtkRenderWindowInteractor.h>
> #include <vtkInteractorStyleSwitch.h>
> #include <vtkFillHolesFilter.h>
>
>
> int main ( int argc, char *argv[] )
> {
>   if ( argc != 2 )
>     {
>     cout << "Required parameters: Filename" << endl;
>     return EXIT_FAILURE;
>     }
>
> std::string inputFilename = argv[1];
>
>   vtkSmartPointer<vtkSTLReader> reader =
>     vtkSmartPointer<vtkSTLReader>::New();
>   reader->SetFileName(inputFilename.c_str());
>   reader->Update();
>
>   vtkSmartPointer<vtkPolyData> input = vtkSmartPointer<vtkPolyData>
> ::New();
>   input->ShallowCopy(reader->GetOutput());
>
>   vtkSmartPointer<vtkFillHolesFilter> fillHolesFilter =
>     vtkSmartPointer<vtkFillHolesFilter>::New();
> #if VTK_MAJOR_VERSION <= 5
>   fillHolesFilter->SetInputConnection(input->GetProducerPort());
> #else
>   fillHolesFilter->SetInputData(input);
> #endif
>
>   fillHolesFilter->Update();
>
>
>   // Save STL
>   vtkSmartPointer<vtkSTLWriter> stlWriter =
>     vtkSmartPointer<vtkSTLWriter>::New();
>   stlWriter->SetFileName("D:\\akfiles\\HoleFilled2.stl");
>   stlWriter->SetInputConnection(fillHolesFilter->GetOutputPort());
>   stlWriter->Write();
>
>
>   // Visualize
>   vtkSmartPointer<vtkPolyDataMapper> mapper =
>     vtkSmartPointer<vtkPolyDataMapper>::New();
>   mapper->SetInputConnection(fillHolesFilter->GetOutputPort());
>
>  vtkSmartPointer<vtkActor> actor =
>     vtkSmartPointer<vtkActor>::New();
>   actor->SetMapper(mapper);
>
>   vtkSmartPointer<vtkRenderer> renderer =
>     vtkSmartPointer<vtkRenderer>::New();
>   vtkSmartPointer<vtkRenderWindow> renderWindow =
>     vtkSmartPointer<vtkRenderWindow>::New();
>   renderWindow->AddRenderer(renderer);
>   vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
>     vtkSmartPointer<vtkRenderWindowInteractor>::New();
>   vtkSmartPointer<vtkInteractorStyleSwitch> style =
> vtkSmartPointer<vtkInteractorStyleSwitch>::New();
>   style->SetCurrentStyleToTrackballCamera();
>
>
>   renderWindowInteractor->SetRenderWindow(renderWindow);
>   renderWindowInteractor->SetInteractorStyle(style);
>
>   renderer->AddActor(actor);
>   renderer->SetBackground(.3, .6, .3); // Background color green
>
>   renderWindow->Render();
>   renderWindowInteractor->Start();
>
>   return EXIT_SUCCESS;
> }
>
> The visualization is fine - the holes are filled. But when I load
> HoleFilled2.stl in Meshlab, the holes are back!
>
> Can anyone see what I'm doing wrong ?
>
> Thanks
>
>
>
> --
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-- 
Unpaid intern in BillsBasement at noware dot com
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