[vtkusers] re-orienting faces coherently

[gauravG]

David,
Thanks for the reply. what I am doing is very much similar to the filling
holes example @ (http://www.vtk.org/Wiki/VTK/Examples/Cxx/Meshes/FillHoles).
As shown in the figure in the above link, the normals of the filled holes
are not consistent with the rest of the model.
As per your suggestion, I calculated normals (both point & cell) for the
vtkpolydata input similar to the example @
http://www.vtk.org/Wiki/VTK/Examples/Cxx/PolyData/PolyDataExtractNormalswith
the consistency on and flag set to 1before passing to the fill holes
filter. Still my output file seem to have inconsistent faces. I could send
you my code but it is essentially a copy paste from the above two examples.
Am I missing anything? thanks again for the help. I really appreciate it.
here is my pipeline

   1. ply reader to read
   2. vtkpolydata filter for deepcopy
   3. compute normals (vtkpolydatanormals)
   4. filling holes vtkFillHolesFilter
   5. Ply writer

gaurav


On Thu, Mar 21, 2013 at 6:50 PM, David Gobbi [via VTK] <
ml-node+s1045678n5719526h54 at n5.nabble.com> wrote:

> Hi Guarav,
>
> Your description of what you've done is too vague for me to help you.
> Write out the full names of the filters that you are using, plus a
> summary of the options that you are using with each filter.
>
>  - David
>
> On Thu, Mar 21, 2013 at 1:55 AM, gauravG <[hidden email]<http://user/SendEmail.jtp?type=node&node=5719526&i=0>>
> wrote:
>
> > David-
> > thanks a bunch for the reply.
> > Here is my pipeline;
> > reader->polydata->fillholes filter-> writer;
> >
> > Now I computed point and cell normals for the polydata consistently.
> still
> > the output faces are inconsistent. Am I missing anything.
> > thanks again,
> > gaurav
> >
> >
> > On Thu, Mar 21, 2013 at 11:49 AM, David Gobbi [via VTK] <[hidden email]>
> > wrote:
> >>
> >> Hi Guarav,
> >>
> >> Consistency is one of the options for vtkPolyDataNormals.
> >>
> >> On Thu, Mar 21, 2013 at 12:14 AM, gauravG <[hidden email]> wrote:
> >> > Hi- I'm trying to re-orient faces coherently after reconstruction and
> >> > hole
> >> > filling. Is there a way to accomplish this in VTK. The hole filled
> have
> >> > a
> >> > orientation opposite to the neighboring faces.
> >> > thanks in advance
> >> > Gaurav
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