[vtkusers] Strange behaviour when using vtkSTLReader

[Marek.Wasilewski at dnv.com]

Hi
I'm just experimenting with vtkSTLReader (using C++) and the following
code results in an interesting collage of black and white triangles.
Does anyone know what might be wrong?

Thanks for any help you can give.

Marek

  CString strFileName;
  strFileName.Format(_T("%s%s"), VTK_DATA_ROOT, "42400-IDGH.stl");

  vtkSTLReader* part = vtkSTLReader::New();
  part->SetFileName(strFileName);

  vtkPolyDataMapper* partMapper = vtkPolyDataMapper::New();
  partMapper->SetInput(part->GetOutput());

  vtkLODActor* partActor = vtkLODActor::New();
  partActor->SetMapper(partMapper);
    
  partActor->GetProperty()->SetColor(0.8,0.8,0.8);
  partActor->RotateX(30.0);
  partActor->RotateY(-45.0);

  vtkRenderer* ren1 = vtkRenderer::New();
  vtkRenderWindow* renWin = vtkRenderWindow::New();
  renWin->AddRenderer(ren1);

  vtkRenderWindowInteractor* iren = vtkRenderWindowInteractor::New();
  iren->SetRenderWindow(renWin);

  ren1->AddActor(partActor);
  ren1->SetBackground(0.1, 0.2, 0.4);

  renWin->Render();
  ren1->GetActiveCamera()->Zoom(1.5);

  iren->Initialize();
  iren->Start();

  part->Delete();
  partMapper->Delete();
  partActor->Delete();
  ren1->Delete();
  renWin->Delete();
  iren->Delete();

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