[vtkusers] smart pointer as member in class

[Feng Xing]

Hello everyone,

I tried to define a class, its number is vtkSmartPointer<vtkDoubleArray>  data. It is allocated in one member function (init()), and given values in another member function(setdata()). I get always segmentation errors. Il seems that data in setdata() function is not allocated or (freed?). If I put data->SetComponents in init(). All works well. Where is the problem? The pointer?

Thank you very much.

The code is similar like this

class VisuVTK

private:
  vtkSmartPointer<vtkDoubleArray>  data;

public: 
   
   init(){
     data = vtkSmartPointer<vtkDoubleArray>::New(); 
     data->SetNumberOfComponents(1);     // size of component in tuple is 1
     data->SetNumberOfTuples(Ncell); // size of data
   };

   setdata(){
     for(int i=0;i<Ncell;i++){
     data->SetComponent(i,0,1.0); }
   };

end class  

Feng Xing
Postdoc in France