[vtkusers] Recalculation of contours into an contour representation

[Marcelino Rodriguez Cancio]

Sven,

Why dont you try with a vtkCutter to extract your slice? Take a look at the vtkCutter test:

/Graphics/Testing/Tcl/probe.tcl

Cheers
Marcelino

-----Mensaje original-----
De: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] En nombre de Sven Olaf Lüttmann
Enviado el: jueves, 24 de noviembre de 2011 11:31 a.m.
Para: vtkusers
Asunto: [vtkusers] Recalculation of contours into an contour representation

Dear vtk users,
I have a question gerading contours in a
vtkContourRepresentation.

What I have is a deformed model as vtkPolyData,
representing an anatomical structure, and a
corresponding volume dataset (MR-Images).

Now I'd like to recalculate a contour from the
model of a specific slice in the dataset and pass
it back to a vtkContourWidget to readjust it again.

Therefore I iterate through all points in my
vtkPolyData model and compare the z coordinate of
the point with that from the slice. That is
already working.
I saw that I can add Points to a contour
representation by calling
AddNodeAtWorldPosition(), for example.

Unfortunately that is not working as expected.

Does someone has an idea how to achieve that, is
there a better way to extract single contours from
an vtkPolyData model and add them to a contour widget.

Thanks very much for your help
  Sven
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-Universidad Central "Marta Abreu" de Las Villas. http://www.uclv.edu.cu
-Participe en Universidad 2012, del 13 al 17 de febrero de 2012. Habana.Cuba.  http://www.congresouniversidad.cu
-Consulte la enciclopedia colaborativa cubana. http://www.ecured.cu/