[vtkusers] vtkXMLPolyDataReader/Writer problem

[Bill Lorensen]

What lookup table did you use to display the first image?

On Thu, Nov 7, 2013 at 4:19 AM, madz <madaramh at gmail.com> wrote:
> Hi,
> I'm trying to write a polydata file which looks like the following
> <http://vtk.1045678.n5.nabble.com/file/n5724345/write_file.png> ;
> The code I'm using is;
>
> std::string filename2 = "outputBPoly.vtp";
> // Write file
> vtkSmartPointer<vtkXMLPolyDataWriter> writer =
>     vtkSmartPointer<vtkXMLPolyDataWriter>::New();
>         writer2->SetFileName(filename2.c_str());
> #if VTK_MAJOR_VERSION <= 5
>         writer->SetInput(polydata);
> #else
>         writer->SetInputData(polydata);
> #endif
>         writer->SetDataModeToAscii();
>         writer->Write();
>
>
> And I'm reading the file from a different application.
> The code is;
>
>   // Read all the data from the file
>   vtkSmartPointer<vtkXMLPolyDataReader> reader =
>     vtkSmartPointer<vtkXMLPolyDataReader>::New();
>   reader->SetFileName(filename.c_str());
>   reader->Update();
>
>   // Visualize
>   vtkSmartPointer<vtkPolyDataMapper> mapper =
>     vtkSmartPointer<vtkPolyDataMapper>::New();
>   mapper->SetInputConnection(reader->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();
>   renderWindowInteractor->SetRenderWindow(renderWindow);
>
>   renderer->AddActor(actor);
>   renderer->SetBackground(1, 1, 1);
>
>   renderWindow->Render();
>   renderWindowInteractor->Start();
>
>  And the output looks like the following image.
> <http://vtk.1045678.n5.nabble.com/file/n5724345/read.png>
> My question is, what happened to the different colours in the original
> polydata. Why aren't they appearing in the new polydata. How do I remedy
> this?
>
> Thank you.
>
>
>
>
>
> --
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