[vtkusers] can't write obj files

[David Doria]

Gabriele,
I am still not sure why this is not included - you can use my WriteAPolyData
function that I cut out/modified from the vtkOBJExporter.
Replace vtkOBJExporter.cxx/h in VTK/Rendering - then see WriteOBJ.cpp for an
example.

http://www.rpi.edu/~doriad/OBJWriter/

Maybe someone with write access can commit this?

Thanks,

David


On Fri, May 29, 2009 at 12:51 PM, Gabriele <zibalmail at gmail.com> wrote:

> Hello,
>
> I have spent a few hours already on this thing and I can't really
> understand why it does not work.
>
> I am trying to save an .obj file using vtkObjExporter, but only the mtl
> file is saved, no .obj.
>
> I include a simple function that should, in my humble opinion, read an obj
> file and just save it with a different name, but again only stores the .mtl
> file. Can anyone guess what's wrong?
>
> Thanks a lot,
> G
>
>
> #include <vtkOBJReader.h>
> #include <string>
> #include <vtkRenderer.h>
> #include <vtkRenderWindow.h>
> #include <vtkRenderWindowInteractor.h>
> #include <vtkOBJExporter.h>
>
>
> void tryIO(std::string& name){
>
>   vtkOBJReader *myObjReader;
>   myObjReader = vtkOBJReader::New();
>   myObjReader->SetFileName(name.c_str());       myObjReader->Update();
>     vtkPolyData* model = vtkPolyData::New();
>   model->DeepCopy(myObjReader->GetOutput());
>             myObjReader->Delete();
>     vtkOBJExporter* objExporter = vtkOBJExporter::New();
>     std::string outName(name.substr(0, name.find_last_of('.')));
>   outName += "_processed";
>   objExporter->SetFilePrefix(outName.c_str());
>     //set renderer to the read model
>   vtkRenderer *renderer;
>   renderer = vtkRenderer::New();
>         vtkPolyDataMapper *myDataMapper = vtkPolyDataMapper::New();
>   myDataMapper->SetInput(model);
>     vtkActor *myActor = vtkActor::New();
>   myActor->SetMapper(myDataMapper);
>     //assign our actor to the renderer
>   renderer->AddActor(myActor);
>     vtkRenderWindow *renWin = vtkRenderWindow::New();
>   renWin->AddRenderer(renderer);
>     objExporter->SetRenderWindow(renWin);
>   objExporter->Write();
>     objExporter->Delete();       renWin->Delete();
>   renderer->Delete();
>   myDataMapper->Delete();
>   myActor->Delete();
>   }
>
>
>
>
> int main(int argc, char* argv[]){
>     std::string objName(argv[1]);
>   tryIO( objName );
>
>   }
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