[vtkusers] ClipClosedSurface - Choose which side of plane to keep

[Bill Lorensen]

I just wrote a quick example. When I flip the normal, the other side is shown.

Can you post a self-contained, compiplable example and CMakeLists.txt
file that illustrates your problem? You can use a vtkSphereSource as
your polydata.


On Fri, Sep 16, 2016 at 2:06 PM, EdwardWang <ed1996 at gmail.com> wrote:
> Hi all,
>
>
> This feels like a trivial issue, but I've been having some trouble with
> vtkClipClosedSurface. Basically, I describe a plane using the normal and an
> origin point, and try to clip based on that plane.
> This image shows what I'm trying to do.
> <http://vtk.1045678.n5.nabble.com/file/n5740367/clip.png>
>
> The problem is that the wrong side of the plane is being returned. The grey
> is the original model and the yellow is the result of the clipping. I want
> the grey part, not the yellow part.
>
> I've tried flipping the sign of the normal vector, but that hasn't helped.
> Any ideas on how to do this?
>
> For reference, I am using Slicer3D, which uses vtk.
>
> Thank you,
> Edward
>
>
>
> --
> View this message in context: http://vtk.1045678.n5.nabble.com/ClipClosedSurface-Choose-which-side-of-plane-to-keep-tp5740367.html
> Sent from the VTK - Users mailing list archive at Nabble.com.
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the VTK FAQ at: http://www.vtk.org/Wiki/VTK_FAQ
>
> Search the list archives at: http://markmail.org/search/?q=vtkusers
>
> Follow this link to subscribe/unsubscribe:
> http://public.kitware.com/mailman/listinfo/vtkusers



-- 
Unpaid intern in BillsBasement at noware dot com