[vtkusers] can't write obj files

[Gabriele]

Thanks David,

So, is this a known bug?

Recompiling with your patch is not that easy for me as I am on a managed 
machine. I have just tried to compile VTK on my home directory and 
everything seemed to go fine, but when I later tried to compile my 
application (which uses vtk), I get all sort of undefined reference 
errors at link time, mainly opengl related...

I'll keep trying, but if anyone has a guess it'll be highly appreciated.

Cheers,
G


David Doria wrote:
> 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/ 
> <http://www.rpi.edu/%7Edoriad/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 
> <mailto: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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