BUGRPT: VTK 3.1 & Python callbacks

[David Gobbi]

On Tue, 16 May 2000, Randall Hopper wrote:

> David Gobbi:
>  |Randall Hopper:
>  |> It appears that VTK 3.1 doesn't check for error when returning from a
>  |> Python callback
>  |
>  |I noticed this problem about a year ago, but it hasn't come up in any
>  |of my own code recently.  I've committed a fix to CVS.  If you want to
>  |patch your own copy, add
>  |
>  |  if (PyErr_Occurred())
>  |    {
>  |    PyErr_Print();
>  |    }
> 
> Thanks.  I get that stack trace now.
> 
> This won't propagate the error though, will it?  Is there a mechanism to
> fail an object and the pipeline in the VTK internals?
> 
> In Python, this could intuitive surface as an exception thrown by the
> ProgrammableSource object when the Render pass occurs.

Feel free to contribute a better fix.  The Python/C API docs come
with the standard python distribution.  

 - David

--
  David Gobbi, MSc                    dgobbi at irus.rri.on.ca
  Advanced Imaging Research Group
  Robarts Research Institute, University of Western Ontario

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