[vtkusers] trying to clip a polyData with an other

[Laurent Mundeleer]

Hi All,
 
I'dl like to clip a vtkPolyData with another one.
Here's my code, based on the examples:
 
---------------------

 vtkImplicitDataSet *v = vtkImplicitDataSet::New();
 v->SetDataSet(ovoideSample->GetInput()); // ovoideSample has on input a 
vtkSuperquadricSource
 
 vtkClipPolyData *clipper = vtkClipPolyData::New();
 clipper->SetInput(tumorSample->GetInput()); // tumorSample ha on input 
a vtkSphereSource 
 
 clipper->SetClipFunction(v);
 clipper->GenerateClipScalarsOn();
 clipper->Update();
 
 tumorSample->SetInput(clipper->GetOutput());
 aff->ChargerModel3D(tumorSample);
 
---------------------

but after that my tumorSample is empty.
What do i wrong?
 
Thanks in advance,
Regards

Laurent