RequestData doesn't get called unless the pipeline determines that something has changed. This is at core of VTK's demand driven execution pipeline. You may want to checkout Berk's blog ( http://www.kitware.com/blog/home/post/831) about how you can use `CONTINUE_EXECUTING` key for "streaming".
Utkarsh On Wed, Jun 24, 2015 at 2:32 PM Dean, Kevin < [email protected]> wrote: > I was wondering if anyone has run into this problem before. I am streaming > vtkPolyData objects into ParaView, but for some reason (after my > UpdatePipeline function is called), the executive does not call RequestData > upon an Update command. Could there be any reasons for this? > > Here is my snippet: > > *void* *VTKPolyDataObjectsDDSReader::UpdateMyPipeline*(vtkPolyData* > poly_data) > { > // DEBUG: > // printf("%s\n", __PRETTY_FUNCTION__); > > VTKPolyDataObjectsDDSReader::*UpdateInformation*(); > vtkStreamingDemandDrivenPipeline* executive = > vtkStreamingDemandDrivenPipeline::*SafeDownCast*( > VTKPolyDataObjectsDDSReader::*GetExecutive*()); > > *if* (!executive) > { > *return*; > } > > *this*->poly_data = poly_data; > > *for* (*int* i = 0; i < *this*->poly_data->*GetNumberOfPieces*(); i++) > { > executive->*SetUpdateExtent*(0, i, *this*->poly_data-> > *GetNumberOfPieces*(), 0); > VTKPolyDataObjectsDDSReader::*Update*(); > } > } > > Any help is appreciated! Thanks guys. > > Kevin E. Dean > > P.S. - also attached is a screenshot of what some of the output looks like. > > This email and its contents are confidential. If you are not the intended > recipient, please do not disclose or use the information within this email > or its attachments. If you have received this email in error, please report > the error to the sender by return email and delete this communication from > your records.
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