[vtk-developers] vtkAOSDataArrayTemplate annoying API change

[David Gobbi]

On Thu, Mar 24, 2016 at 10:00 AM, David Lonie <david.lonie at kitware.com>
wrote:
>
> GetValue is not defined at the vtkDataArray level, and nor should it be
> (IMO).
>
> My reasoning: vtkDataArray no longer assumes AOS ordering. The decision
> was that, ideally, vtkDataArray API would operate on tuples and components,
> while subclasses (e.g. AOS or SOA) would provide these more
> implementation-dependent lookups. In the context of SOA ordering, the value
> indices don't make a whole lot of sense and are inefficient to use, while
> GetComponentValue is efficient in either case.
>

That makes sense, thanks for the explanation.  It's obvious to me now that
you cannot provide a "flat" view of the data until the ordering is known.


I would really like GetNumberOfValues() to make a comeback.
>>
>
> I agree -- so much so that I already added it! ;) It's not gone, it's just
> moved out of the implementation class to vtkAbstractArray.
>

Nice!

 - David

>
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