[Paraview] Problem using Generate Surface Normals

[Adriano Gagliardi]

The issue was the pointer to the filestream was being set to NULL after all
reading finished, so when RequestData was called it quite rightly returned a
0. Thanks for the pointer, Utkarsh.

===================================

Adriano Gagliardi MEng PhD
Project Scientist
Computational Aerodynamics
Aircraft Research Association Ltd.
Manton Lane
Bedford

Tel: 01234 32 4644
E-mail: agagliardi at ara.co.uk
Url: www.ara.co.uk 
-----Original Message-----
From: Utkarsh Ayachit [mailto:utkarsh.ayachit at kitware.com] 
Sent: 11 February 2010 15:51
To: agagliardi at ara.co.uk
Cc: ParaView
Subject: Re: [Paraview] Problem using Generate Surface Normals

More likely than not, your vtkTestReader::RequestData() returned a '0'. You
might want to put a break point in
vtkTestReader::RequestData() and see why it's returning a 0.

Utkarsh

On Thu, Feb 11, 2010 at 10:34 AM, Adriano Gagliardi <agagliardi at ara.co.uk>
wrote:
>
> Dear All,
>
> I have a custom reader that works fine and loads mesh and data in as I 
> require. However, when I try to execute 'Generate Surface Normals' on 
> it, I get the error below. The process I am following is:
>
> -> Read in mesh and data(multi-block data-set, vtkUnstructuredGrid 
> -> stored in
> each block)
> -> Extract blocks
> -> Extract surface (outputs vtkPolyData) Generate Surface Normals 
> -> Error message
>
> ERROR: In /usr/Paraview/ParaView3/VTK/Filtering/vtkExecutive.cxx, line 
> 757 vtkCompositeDataPipeline (0x8135e40): Algorithm 
> vtkTestReader(0x7ecf280) returned failure for request: vtkInformation 
> (0x1c9cf730)
>  Debug: Off
>  Modified Time: 369530
>  Reference Count: 1
>  Registered Events: (none)
>  Request: REQUEST_DATA
>  FORWARD_DIRECTION: 0
>  ALGORITHM_AFTER_FORWARD: 1
>  FROM_OUTPUT_PORT: 0
>
> Notably, after this happens the data in the entire pipeline is messed up.
> Can someone point me to something that may be missing in my reader?
>
> Best regards,
>
> Adriano
>
> ===================================
>
> Adriano Gagliardi MEng PhD
> Project Scientist
> Computational Aerodynamics
> Aircraft Research Association Ltd.
> Manton Lane
> Bedford
>
> Tel: 01234 32 4644
> E-mail: agagliardi at ara.co.uk
> Url: www.ara.co.uk
>
>
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