[vtkusers] [MASSMAIL] What happened to vtkAlgorithm::PRESERVES_BOUNDS()?

[David E DeMarle]

Serge.

You are correct.

We removed that to clean house in preparation for the parallel extent
handling improvements. The priority streaming feature it was part of was
largely unused in VTK and ParaView and we knew of no other users.

If the use-case you are seeing was in an Algorithm that emitted it you are
fine with simply removing it. If you had something that consumed it, then
there would be more work as we don't have a direct replacement for this in
the works.

hth


David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909

On Wed, Dec 9, 2015 at 10:41 AM, Serge Lalonde <serge at infolytica.com> wrote:

> To answer myself (I hope) and for posterity,
>
> it looks like PRESERVE_BOUNDS() is simply obsolete. I compared other from
> vtkUnstructuredGridAlgorithm derived classes in VTK between 6.1 and 6.3 and
> the code was simply removed. So I suspect that it's safe to do so in my
> code. I'll update the list if this turns out to be wrong.
>
> On 12/9/2015 9:13 AM, Serge Lalonde wrote:
>
> Hello VTK users,
>
> VTK 6.1 had a vtkInformationIntegerKey member in vtkAlgorithm called
> PRESERVES_BOUNDS().
> I'm upgrading to VTK 6.3 and this no longer exists (it was removed in VTK
> 6.2).
> We us this in a class we created that's derived from
> vtkUnstructuredGridAlgorithm and I`d like to know the proper way to port it
> to VTK 6.3.
> I checked the change log between 6.1 and 6.2 and there's no mention of it,
> but I suspect it was removed as part of the parallelism changes in the
> pipeline.
>
> Anybody know how to handle this?
>
>
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