[Paraview] use of vtkSynchronizedTemplates

[Berk Geveci]

Did you try calling Update() on SynchronizedTemplated3D instead of
ThreadedExecute()? ThreadedExecute() is really meant to be used
internally.

-berk

On Mon, Feb 23, 2009 at 7:48 AM, Natalie Happenhofer
<nataliehapp at hotmail.com> wrote:
> Hi!
> I want to display isosurfaces of values I compute in my filter, so looking
> at vtkContourFilter, I got the idea to use the vtkSynchronizedTemplates3D
> (as my filter is going to handle 3D ImageData).
> I have a vtkSynchronizedTemplate3D as an instance of my filter, in the
> constructor it´s initialized and then I do the following:
>
>
> this -> SynchronizedTemplates3D -> SetInput(TauSet);
> this -> SynchronizedTemplates3D -> ComputeNormalsOff();
> this -> SynchronizedTemplates3D -> ComputeGradientsOff();
> this -> SynchronizedTemplates3D -> SetComputeScalars(1);
> this -> SynchronizedTemplates3D -> SetNumberOfContours(1);
> this -> SynchronizedTemplates3D -> SetValue(0, TauValue);
>
> int ext[6];
> inInfo -> Get(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(), ext);
> this -> SynchronizedTemplates3D ->
> ThreadedExecute(TauSet,inInfo,outInfo,ext, TauValues);
>
>
> It does compile, but running I get an segmentation fault, debugging and
> backtracing I get:
>
> #0  0x00007f42ffc5eb10 in ContourImage<double> () from
> /home/happenhofer/Paraview/build-svn/bin/libvtkGraphics.so.pv3.4
> #1  0x00007f42ffc5a308 in vtkSynchronizedTemplates3D::ThreadedExecute ()
> from /home/happenhofer/Paraview/build-svn/bin/libvtkGraphics.so.pv3.4
> #2  0x00007f4309195f06 in vtkTauFilter::RequestData () from
> /home/happenhofer/Paraview/build-svn/bin/libvtkPVFilters.so
>
> vtkTauFilter would be my filter, so the error occurs in
> ContourImage<double>.
>
> Does anyone have an idea even how to find the problem? That would be a great
> help..
>
> and just in general - calling ThreadedExecute would execute the
> SynchronizedTemplate filter and return a grid with the isosurface computed,
> does it not? or do I have to specifiy the output somehow?
>
> thx a lot,
> Natalie Happenhofer
>
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