[vtkusers] can't update contourFilter unless i do contourFilter->SetValue(, )

[Liam Kurmos]

Thank Seb,

I am not observing this.
The contourActor below is unmodified without the contourFilter->SetValue() call.

my method is:

               vFrame->reinitField();//after this the vtkImageData is modified

              //try updating things
               vFrame->vol->Update();
               vFrame->contourFilter->Update();
               vFrame->contourFilter->GetOutput()->Update();
               vFrame->contourActor->GetMapper()->GetInput()->Update();

               //remove works but add it back and it is not updated
               vFrame->ren1->RemoveActor(vFrame->contourActor);
               vFrame->ren1->AddActor(vFrame->contourActor);

               //as a work around i can set the iso value to
something else and then set it back.
               vFrame->contourFilter->SetValue(0,newVal);
               vFrame->contourFilter->SetValue(0,origVal)

              renWin->Render();

without the SetValue() call the vtkActor is not being updated. I have
a work around for now, later today i will try to make a simple example
of this and if it persits file a bug report.

Liam