[vtkusers] vtkOBJReader QVTKwidget problem

[Joachim Pouderoux]

Hi Massi,

Could you be more precise? Where exactly the program crashes in the
ReadFile() function?
Are you sure that your file name pointer is not null?

J.

2013/2/7 Massinissa Bandou <Massinissa.Bandou at usherbrooke.ca>

> Hi everyone!!!
>
> I have a problem to display an object file with QVTKwidget. The program
> crashes every time I call the ReadFile() function. Can anyone help me
> what's
> wrong with this code???
>
> class ObjectCleaning
> {
> private:
>     Ui::ImageProcessing Widget;
>     const char* fileName;
>     vtkPolyData* data;
> public:
>     void ReadFile(const char* file){
>         this->fileName=file;
>         vtkOBJReader* obj = vtkOBJReader::New();
>         obj->SetFileName(file);
>         obj->Update();
>         this->data=obj->GetOutput();
>         this->Visualize(obj->GetOutputPort());
>     }
> void Visualize(vtkAlgorithmOutput* pdata){
>         vtkSmartPointer<vtkPolyDataMapper> Mapper =
> vtkSmartPointer<vtkPolyDataMapper>::New();
>         Mapper->SetInputConnection(pdata);
>         vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New();
>         actor->SetMapper(Mapper);
>         vtkSmartPointer<vtkRenderer> renderer =
> vtkSmartPointer<vtkRenderer>::New();
>         vtkSmartPointer<vtkRenderWindow> renderWindow =
> vtkSmartPointer<vtkRenderWindow>::New();
>         renderWindow->AddRenderer(renderer);
>         renderer->AddActor(actor);
>         renderer->ResetCamera();
>         Widget.qvtkWidget->SetRenderWindow(renderWindow);
>         Widget.qvtkWidget->update();
>     }
> }
>
>
> I used an edit line to get the file path and I'm reading it as follows:
> void OpenFile(){
>       ObjectCleaning a;
>       Widget.editline->setText(file);
>       QString str = Widget.ImagePath->text();
>       const char *filename = str.toLatin1();
>       a.ReadFile(filename);
> }
>
>
> thx for your help!!
>
> Massi
>
>
>
>
>
>
> --
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-- 
*Joachim Pouderoux*

*PhD, R&D Enginee*r
*Kitware SAS <http://www.kitware.fr>*
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