[vtkusers] Arrays and double arrays of VTK pointers

[Roberto De Leo]

Hi all,
I'm using VTK for some topological computation on surfaces and I need to 
use arrays and double arrays (matrices) of pointers of VTK objects. I 
read similar questions on this ML in the past years but no very 
satisfying (for me) answer.
With some effort I did find a way to do that but I know very little C++ 
and so possibly my way is unsafe and might cause some problem I cannot 
foresee now, so I'd be very glad if some of you more C++ knowledgeable 
could give a look to the code below and let me know if it's "safe":

<--- Example: 1-dim array of N pointers to vtkPolyData

vtkPolyData *p[N];
  for( int i=0; i<N; i++ )
     p[i] = vtkPolyData::New()

---------------->

<--- Example: 2-dim array of NxM pointers to vtkPolyData

vtkPolyData ***p = new vtkPolyData** [N];
for( int i=0; i<N; i++ ){
    p[i] = new vtkPolyData* [M];
    for( int j=0; j<M; j++ )
        p[i][j] = vtkPolyData::New();
}

---------------->

Thanks,
  Roberto De Leo