[vtkusers] vtkSelection and vtkExtractSelected*

[David E DeMarle]

Awesome. That would be great. Thanks!

On 3/22/07, John Norris <jnorris at mcs.anl.gov> wrote:
>
> Sounds good, that's more or less what I was thinking.  I suppose I could
> go ahead and add proper support for PRESERVE_TOPOLOGY and
> CONTAINING_CELLS.  The vtkExtractSelected* filters would all have to
> overload RequestDataObject() if I do that (vtkExtractSelectedFrustum
> already does), but then you could remove vtkExtractSelectedPolyDataIds.
>
> John
>
> David E DeMarle wrote:
> > That does sound like a good idea. How about calling it INVERSE, and
> > adding that as a property to vtkSelection. Then make the
> > vtkExtractSelected* filters respect it. Probably the best place to do
> > that is where each filters inspects individual points and cells.
> >
> > I'm too busy to try it in the short term but would be glad to help.
> >
> > cheers
> > Dave DeMarle
> >
> > On 3/21/07, *John Norris* < jnorris at mcs.anl.gov
> > <mailto:jnorris at mcs.anl.gov>> wrote:
> >
> >     Hi,
> >
> >     I've got a feature request regarding vtkSelection and the
> vtkExtract*
> >     filters that use it.  It would be really helpful if there was some
> sort
> >     of "ReverseSense" or "EverythingElseExcept" option, either as flags
> in
> >     the algorithms or as an information field in
> vtkSelection.  Basically I
> >     want to turn the selection list into an exclusion list.
> >
> >     I can make these changes myself; they're fairly
> straight-forward.  I'd
> >     be willing to contribute them if it something that Ken Martin, Will
> >     Schroeder, and Bill Lorensen deem valuable enough.
> >
> >     John
>
> --
> John Norris
> Research Programmer
> Center for Simulation of Advanced Rockets
> http://www.uiuc.edu/ph/www/jnorris
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