[vtkusers] How to use 'vtkCurvatures' class?
B. C.
butterfly.1688 at yahoo.fr
Mon Oct 20 13:30:46 EDT 2008
Hi,
I used this:
vtkCurvatures *curve = vtkCurvatures::New();
curve->SetInput(cleaner->GetOutput());
curve->SetCurvatureTypeToMaximum();
curve->Update();
vtkThreshold *thresh = vtkThreshold::New();
thresh->SetInput(curve->GetOutput());
thresh->ThresholdByUpper(0.5);
vtkUnstructuredGridToPolyDataFilter *filtre;
filtre->SetInput(thresh->GetOutput());
vtkPolyDataMapper *maxMapper = vtkPolyDataMapper::New();
maxMapper->SetInput(filtre->GetOutput());
but, that does not work. The bug generated is in this line:
filtre->SetInput(thresh->GetOutput());
I don't know how to do!!!!
--- En date de : Lun 20.10.08, Amy Squillacote <ahs at cfdrc.com> a écrit :
De: Amy Squillacote <ahs at cfdrc.com>
Objet: Re: [vtkusers] How to use 'vtkCurvatures' class?
À: butterfly.1688 at yahoo.fr
Cc: vtkusers at vtk.org
Date: Lundi 20 Octobre 2008, 13h03
Add a vtkGeometryFilter between vtkThreshold and vtkPolyDataMapper OR
use a vtkDataSetMapper instead of the vtkPolyDataMapper (in which case
vtkGeometryFilter is unneeded).
- Amy
B. C. wrote:
> Hi Amy,
> when i do what you told me, i have this error:
> error C2664: 'SetInput' : cannot convert parameter 1 from
'class
> vtkUnstructuredGrid *' to 'class vtkPolyData'
> for the code line
'maxMapper->SetInput(thresh->GetOutput());'
> It should be something else to add before this. Can you help me?
>
>
> --- En date de : *Ven 17.10.08, Amy Squillacote /<ahs at cfdrc.com>/* a
> écrit :
>
> De: Amy Squillacote <ahs at cfdrc.com>
> Objet: Re: [vtkusers] How to use 'vtkCurvatures' class?
> À: butterfly.1688 at yahoo.fr
> Cc: vtkusers at vtk.org
> Date: Vendredi 17 Octobre 2008, 20h12
>
> Put the vtkThreshold code after you set up vtkCurvatures (just below
> your call to curve->Update()). Then change the input to maxMapper
from
> "curve->GetOutput()" to
"thresh->GetOutput()".
>
> - Amy
>
> B. C. wrote:
> > Thank you Amy.
> > I post you the code i used:
> >
> > vtkCurvatures *curve = vtkCurvatures::New();
> > curve->SetInput(cleaner->GetOutput());
> > curve->SetCurvatureTypeToMaximum();
> > curve->Update();
> >
> > vtkPolyDataMapper *maxMapper = vtkPolyDataMapper::New();
> > maxMapper->SetInput(curve->GetOutput());
> >
> > vtkActor *maxCurve = vtkActor::New();
> > maxCurve->SetMapper(maxMapper);
> > maxCurve->SetPosition(0.0,0.0,0.0);
> > myRender->AddActor(maxCurve);
> > myRenderWindow->Render();
> >
> > Please, tell me where to add the code you sent to me to display
the
> > maximum curvatures>0.5
> >
> > Thank you for your help!!!
> >
> >
> > --- En date de : *Ven 17.10.08, Amy Squillacote
/<ahs at cfdrc.com>/* a
>
> > écrit :
> >
> > De: Amy Squillacote <ahs at cfdrc.com>
> > Objet: Re: [vtkusers] How to use 'vtkCurvatures'
class?
> > À: butterfly.1688 at yahoo.fr
> > Cc: vtkusers at vtk.org
> > Date: Vendredi 17 Octobre 2008, 19h41
> >
> > You'll want to use vtkCurvatures with curvature type set
to
> maximum.
> > Then pass the output of that filter to a vtkThreshold, using
the
> > ThresholdByUpper method to indicate the values to keep.
Example c++
> code
> > is shown below.
> >
> > vtkCurvatures *curv = vtkCurvatures::New();
> > curv->SetCurvatureTypeToMaximum();
> >
> > vtkThreshold *thresh = vtkThreshold::New();
> > thresh->SetInputConnection(curv->GetOutputPort());
> > thresh->ThresholdByUpper(0.5); // using the example value
you
> provided.
> >
> > Online documentation for vtkCurvatures is here:
> > http://www.vtk.org/doc/nightly/html/classvtkCurvatures.html.
> > Online documentation for vtkThreshold is here:
> > http://www.vtk.org/doc/nightly/html/classvtkThreshold.html.
> >
> > - Amy
> >
> > B. C. wrote:
> > > Please, i need your help to finish my work!!!
> > > I use 'vtkCurvatures' to compute curvatures at
each point
> of my
> > > polydata structure.
> > > I want to save only the Maximum curvatures and display
only those
>
> > > which are > some_value (0.5 for example).
> > > Can someone tell me how to do this?
> > > Please heeeeeeeeelp!!!
> > >
> > >
> > > __________________________________________________
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> > >
>
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> >
> > --
> > Amy Squillacote Phone: (256) 726-4839
> > Computer Scientist Fax: (256) 726-4806
> > CFD Research Corporation Web: http://www.cfdrc.com
> > 215 Wynn Drive, Suite 501
> > Huntsville, AL 35805
> >
> >
> >
> >
> >
> > __________________________________________________
> > Do You Yahoo!?
> > En finir avec le spam? Yahoo! Mail vous offre la meilleure
protection
> > possible contre les messages non sollicités
> > http://mail.yahoo.fr Yahoo! Mail
>
> --
> Amy Squillacote Phone: (256) 726-4839
> Computer Scientist Fax: (256) 726-4806
> CFD Research Corporation Web: http://www.cfdrc.com
> 215 Wynn Drive, Suite 501
> Huntsville, AL 35805
>
>
>
>
>
> __________________________________________________
> Do You Yahoo!?
> En finir avec le spam? Yahoo! Mail vous offre la meilleure protection
> possible contre les messages non sollicités
> http://mail.yahoo.fr Yahoo! Mail
--
Amy Squillacote Phone: (256) 726-4839
Computer Scientist Fax: (256) 726-4806
CFD Research Corporation Web: http://www.cfdrc.com
215 Wynn Drive, Suite 501
Huntsville, AL 35805
__________________________________________________
Do You Yahoo!?
En finir avec le spam? Yahoo! Mail vous offre la meilleure protection possible contre les messages non sollicités
http://mail.yahoo.fr Yahoo! Mail
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