[vtkusers] Inverted Crop

[Alessandro Martini]

I'm using a clipping example of GPURenderDemo, with a Box and a Callback,
the boxWidget has only InsideOutOff() and InsideOutOn() options, and no one
of then work like I want.
I'm doing anything wrong?

//---------------------------------------------------------------------------

class vtkBoxWidgetCallback : public vtkCommand
{
public:
  static vtkBoxWidgetCallback *New()
    { return new vtkBoxWidgetCallback; }
  virtual void Execute(vtkObject *caller, unsigned long, void*)
    {
      vtkBoxWidget *widget = reinterpret_cast<vtkBoxWidget*>(caller);
      if (this->Mapper)
        {
        vtkPlanes *planes = vtkPlanes::New();
        widget->GetPlanes(planes);
        this->Mapper->SetClippingPlanes(planes);
        planes->Delete();
        }
    }

    void SetMapper(vtkSmartVolumeMapper* m)
    { this->Mapper = m; }

protected:
  vtkBoxWidgetCallback()
    { this->Mapper = 0; }

  vtkSmartVolumeMapper *Mapper;
};

//---------------------------------------------------------------------------


        vtkBoxWidget *box = vtkBoxWidget::New();

        box->SetInteractor(vtkWindow1->GetInteractor());
        box->SetPlaceFactor(1.01);
        box->SetInput(mapperG->GetInput());
        box->SetDefaultRenderer(vtkWindow1->GetRenderer());
        box->TranslationEnabledOn();
        box->ScalingEnabledOn();
        box->RotationEnabledOn();
        box->PlaceWidget();
        vtkPlanes *planes = vtkPlanes::New();
        box->GetPlanes(planes);
        box->InsideOutOn();
        mapperG->SetClippingPlanes(planes);
        planes->Delete();
        vtkBoxWidgetCallback *callback = vtkBoxWidgetCallback::New();
        callback->SetMapper(mapperG);
        box->AddObserver(vtkCommand::InteractionEvent, callback);
        callback->Delete();
        box->EnabledOn();
        box->GetSelectedFaceProperty()->SetOpacity(0.0);



On Mon, Aug 9, 2010 at 9:53 PM, Sebastien Jourdain <
sebastien.jourdain at kitware.com> wrote:

> If you are using an implicit function for your selection, then you can
> use the Clip filter and just set the InsideOut value to 1.
>
> Seb
>
> On Mon, Aug 9, 2010 at 6:52 PM, Alessandro Martini
> <alessandromartini at gmail.com> wrote:
> > Hello All,
> >
> > I need to do a inverted crop in a volume, mantain the content external to
> > box ( selection ) and hide the internal content, make any like a "hole".
> > What is the correct way? Have any example of this ?
> >
> > Thank's,
> > --
> > Alessandro Martini
> > alessandromartini at gmail.com
> > -------------------------------------------------
> > 'Existem 10 tipos de pessoas no mundo:
> > aquelem que entendem binário, e aqueles que não!'
> >
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-- 
Alessandro Martini
alessandromartini at gmail.com
-------------------------------------------------
'Existem 10 tipos de pessoas no mundo:
aquelem que entendem binário, e aqueles que não!'



-- 
Alessandro Martini
alessandromartini at gmail.com
-------------------------------------------------
'Existem 10 tipos de pessoas no mundo:
aquelem que entendem binário, e aqueles que não!'
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