[vtkusers] How to manage a large VRML file

[Sebastien Jourdain]

Hi Hugo,

I don't know much about C#, but just in case...
It seems that you only pick the first actor. Are you sure that there
is only one ?
I guess, if you don't provide your renderer to the importer is because
you have other actors into it ?
Have you tried, at least to see if the file can be successfully loaded
by VTK when the importer is fully set ?

Seb

On Tue, Oct 26, 2010 at 9:18 AM, Hugo Valdebenito <hugo at maptek.cl> wrote:
> Hi all,
>
>
> I need to load a large data set, for example a VRML file (500MB), I'm using
> the following code (C#), may not be the best way, with my data set it's not
> work, not show anything :
>
>             // VRML Import
>            vtkVRMLImporter importer = vtkVRMLImporter.New();
>
>            OpenFileDialog dialog = new OpenFileDialog();
>            dialog.Filter =
>               "VRML files (*.wrl)|*.wrl|All files (*.*)|*.*";
>            dialog.InitialDirectory = "\\Desktop";
>
>            dialog.Title = "Select a text file";
>            dialog.Multiselect = false;
>           if (dialog.ShowDialog() != DialogResult.OK)
>           {
>               return;
>           }
>
>            importer.SetFileName(dialog.FileName);
>            importer.Read();
>            importer.Update();
>
>            //Convert to vtkDataSet
>            vtkDataSet pDataset;
>            vtkActorCollection actors = importer.GetRenderer().GetActors();
>            actors.InitTraversal();
>            pDataset = actors.GetNextActor().GetMapper().GetInput();
>
>            //Convert to vtkPolyData
>            vtkPolyData polyData = vtkPolyData.SafeDownCast ( pDataset );
>            polyData.Update();
>
>            // Mapper
>            vtkPolyDataMapper solidMapper = vtkPolyDataMapper.New();
>            solidMapper.SetInput ( polyData );
>            solidMapper.ScalarVisibilityOff();
>
>            // Actor
>            vtkActor solidActor = vtkActor.New();
>            solidActor.SetMapper ( solidMapper );
>
>            //Add the actors to the scene
>            _renderer.AddActor(solidActor);
>            _renderer.SetBackground(1, 1, 1); // Background color dark blue
>
>
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