Awesome. That would be great. Thanks!<br><br><div><span class="gmail_quote">On 3/22/07, <b class="gmail_sendername">John Norris</b> <<a href="mailto:jnorris@mcs.anl.gov">jnorris@mcs.anl.gov</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Sounds good, that's more or less what I was thinking. I suppose I could<br>go ahead and add proper support for PRESERVE_TOPOLOGY and<br>CONTAINING_CELLS. The vtkExtractSelected* filters would all have to<br>overload RequestDataObject() if I do that (vtkExtractSelectedFrustum
<br>already does), but then you could remove vtkExtractSelectedPolyDataIds.<br><br>John<br><br>David E DeMarle wrote:<br>> That does sound like a good idea. How about calling it INVERSE, and<br>> adding that as a property to vtkSelection. Then make the
<br>> vtkExtractSelected* filters respect it. Probably the best place to do<br>> that is where each filters inspects individual points and cells.<br>><br>> I'm too busy to try it in the short term but would be glad to help.
<br>><br>> cheers<br>> Dave DeMarle<br>><br>> On 3/21/07, *John Norris* < <a href="mailto:jnorris@mcs.anl.gov">jnorris@mcs.anl.gov</a><br>> <mailto:<a href="mailto:jnorris@mcs.anl.gov">jnorris@mcs.anl.gov
</a>>> wrote:<br>><br>> Hi,<br>><br>> I've got a feature request regarding vtkSelection and the vtkExtract*<br>> filters that use it. It would be really helpful if there was some sort
<br>> of "ReverseSense" or "EverythingElseExcept" option, either as flags in<br>> the algorithms or as an information field in vtkSelection. Basically I<br>> want to turn the selection list into an exclusion list.
<br>><br>> I can make these changes myself; they're fairly straight-forward. I'd<br>> be willing to contribute them if it something that Ken Martin, Will<br>> Schroeder, and Bill Lorensen deem valuable enough.
<br>><br>> John<br><br>--<br>John Norris<br>Research Programmer<br>Center for Simulation of Advanced Rockets<br><a href="http://www.uiuc.edu/ph/www/jnorris">http://www.uiuc.edu/ph/www/jnorris</a><br>_______________________________________________
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