[vtkusers] Request to make some member function as virtual

Chiranjib Sur sur.chiranjib at gmail.com
Thu Aug 13 13:05:50 EDT 2015

Hi David,
Thank you very much. Assuming that after the submission and review when it
will be part of the mainstream VTK codebase, will it be automatically
available in ParaView sources too? I am building my own ParaView tree as
well and the changs I have mentioned I need that to be part of VTK at ParaView.

What are your thoughts and suggestions about this?


On Thu, Aug 13, 2015 at 10:30 PM, David E DeMarle <dave.demarle at kitware.com>

> That is most likely fine. Please submit a merge request via gitlab. There
> developers will review your change and merge it to master. One merged it
> will appear in subsequent releases.
> Start at the following web page to learn how to contribute to VTK
> http://www.vtk.org/contributing-code/
> David E DeMarle
> Kitware, Inc.
> R&D Engineer
> 21 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-881-4909
> On Thu, Aug 13, 2015 at 12:47 PM, Chiranjib Sur <sur.chiranjib at gmail.com>
> wrote:
>> Hi,
>> I am working on my own implementation of vtkXMLWriter and I start with
>> inheriting the vtkXMLWriter class. While doing this, I realised that I can
>> obtain my desired XML data format if I can overload the function
>> vtkXMLWriter::WriteArrayFooter(...)
>> vtkXMLWriter::WriteArrayInline(...),
>> vtkXMLWriter::WriteInlineData(..).
>> Currently they are not declared as virtual function and hence the
>> overloading will not work. I can do that by modifying the original vtk
>> class and build my VTK library based on the changes. But these hacks will
>> be gone once I update my VTk source codes.
>> My question is the following :
>> Is it possible to make these function virtual in future releases? Except
>> the vtkXMLWriter class there is no other implementation of those functions,
>> but they are being used by vtkXMLPolydataWriter since the latter is
>> inherited from the base class.
>> I am curious to know what is the thought here.
>> Thanks,
>> Chiranjib
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