[vtkusers] CONTINUE_EXECUTING with vtkinformation

[Biddiscombe, John A.]

Normally you'd modify the UPDATE_EXTENT itself and the pipeline would trigger the source to regenerate data because it would 'know' that the new UPDATE_EXTENT didn't match the old one.

if you are instead sending your own custom key and using that to indirectly modify the update extent, then your best bet would be to simply stuff a this->Modified() inside the request update extent method of the source,( if the new key doesn't match the last value, and so a reexecution is required).

[As long as you don't put a modified in after the request data - because the pipeline will get confused about the true modified time] then you should be ok.

JB

From: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] On Behalf Of Felipe Bordeu
Sent: 25 July 2013 14:36
Cc: vtkusers
Subject: Re: [vtkusers] CONTINUE_EXECUTING with vtkinformation

Thanks, now I can pass the information from the filter to the source using:
-  The CONTINUE_EXECUTING in the RequestData() in the filter
-  In the RequestUpdateExtent() of the filter I have

vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
double val[3]  ...
inInfo->Set(vtkPXDMFDocumentBaseStructure::UPDATE_FIXED_DIMENSIONS(), val, 3);
request->AppendUnique(vtkExecutive::KEYS_TO_COPY(), vtkPXDMFDocumentBaseStructure::UPDATE_FIXED_DIMENSIONS());

-The information key is recovered in the REQUEST_UPDATE_EXTENT() request in the source (when I change something in the source).

When I create the filter, the filter gets executed the correct number of times, BUT the source is never executed (the ProcessRequest member function in the source is never called).

What key or option I have to enable to re execute a source for a downstream filter??
Or a way to tell the source is out-of-date?

Felipe





Le 25/07/2013 10:19, Biddiscombe, John A. a écrit :
did you add the vector you want to pass upstream to the KEYS_TO_COPY vector. My memory is hazy, but what you are trying to do ought to work.

JB

From: vtkusers-bounces at vtk.org<mailto:vtkusers-bounces at vtk.org> [mailto:vtkusers-bounces at vtk.org] On Behalf Of Felipe Bordeu
Sent: 25 July 2013 10:02
To: vtkusers
Subject: [vtkusers] CONTINUE_EXECUTING with vtkinformation

Hello,

I have a source (home made reader) that is capable of generate data depending on some options.
I like to  control theses options using a filter way down in the pipeline. This means that I would like to send a vtkinformation upstream in the pipeline and also iterate for different values of this options. Something like the TemporalStatistics filter but not over time.

Till now, I tried to use the vtkStreamingDemandDrivenPipeline::CONTINUE_EXECUTING information (in the filter) to iterate over the data. My filter is re-executed but my source get executed only once.

Also tried to set a vtkInformationDoubleVectorKey to the inputVector in the RequestUpdateExtent() of my filter with some data but this information is never passed upstream.

Is this possible??? or we can do this only for time.

Thanks for all
Felipe





--

Felipe Bordeu Weldt

Ingénieur de Recherche

-------------------------------------

Tél. : 33 (0)2 40 37 16 57

Fax. : 33 (0)2 40 74 74 06

Felipe.Bordeu at ec-nantes.fr<mailto:Felipe.Bordeu at ec-nantes.fr>

Institut GeM - UMR CNRS 6183

École Centrale Nantes

1 Rue de La Noë, 44321 Nantes, FRANCE

-------------------------------------




--

Felipe Bordeu Weldt

Ingénieur de Recherche

-------------------------------------

Tél. : 33 (0)2 40 37 16 57

Fax. : 33 (0)2 40 74 74 06

Felipe.Bordeu at ec-nantes.fr<mailto:Felipe.Bordeu at ec-nantes.fr>

Institut GeM - UMR CNRS 6183

École Centrale Nantes

1 Rue de La Noë, 44321 Nantes, FRANCE

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