[vtkusers] Bug in vtkPolyDataConnectivityFilter

[Mathieu Malaterre]

Kevin H. Hobbs wrote:
> On Fri, 2006-04-07 at 13:49 -0400, Kevin H. Hobbs wrote:
> 
>>I think I found a bug in vtkPolyDataConnectivityFilter, or at least
>>misleading documentation.
>>
>>The Documentation for mode 4 says "4) extract all regions sharing
>>specified cell ids;" To me this means that the list of seed IDs will be
>>used to seed different regions. GetNumberOfExtractedRegions should give
>>me the number of seeds, and the regions should be colored differently if
>>SetColorRegions is on. This is not what happens. Instead
>>GetNumberOfExtractedRegions returns 1, and all the regions are given the
>>same region number.
> 
> 
> After looking at Graphics/vtkPolyDataConnectivityFilter.cxx I see the
> comment on line 202, "regions have been seeded, everything considered in
> same region" So I think it's the documentation that is wrong, for the
> simple reason that it's easier to fix. A second connectivity filter with
> SetExtractionModeToAllRegions will get what I want.

Kevin,

	Can you open a bug report for that:

http://vtk.org/Bug

Thanks,
Mathieu