[vtkusers] vtkCutter Inner/Outter Contours

[Karthik Krishnan]

Pass the output of the cutter through a vtkPolyDatConnectivity filter.
You'll then need to look at the orientation of the normals of each connected
component. The outer faces of the cut surface are going to be oriented in
another direction.


On Wed, May 26, 2010 at 1:40 PM, Nicolas Sarrasin <
nsarrasin at phenix-systems.com> wrote:

>  Hi all,
>
> I recently posted a message here :
> http://www.vtk.org/pipermail/vtkusers/2010-May/109274.html but didn't
> received any answers.
> I guess I wasn't clear, here comes a simplification :
>
> I use vtkCutter to get planar slices from a stl file. From the result (
> vtkCutter->GetOutput() ) I get, I would like to know the orientation of the
> several contours I obtained (eg which are outter and which are inner).
>
> As previously, as preview of my problem :
> http://img514.imageshack.us/img514/6747/orientationcontours.png
>
> Thanks by advance for helping me.
>
> Nicolas
>  --
> ------------------------------
>   [image: Logo Phenix Systems] <http://www.phenix-systems.com> Nicolas
> Sarrasin - Ingénieur Developpement 3D CFAO
> Phenix systems <http://www.phenix-systems.com>
>  Parc Européen d'Entreprises
> rue Richard Wagner - 63200 Riom FRANCE
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