[Paraview] Fwd: Catalyst simple test
Dan Lipsa
dan.lipsa at kitware.com
Fri Feb 20 10:06:14 EST 2015
I am glad you made it work. Indeed using python would be a lot easier.
Dan
On Fri, Feb 20, 2015 at 7:25 AM, Felipe Bordeu <felipe.bordeu at ec-nantes.fr>
wrote:
>
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> Hi,
>
> I make it work but using the python interface(vtkCPPythonScriptPipeline).
> I think for my case is easier to build pipelines with the Catalyst plugin
> for paraview. And anyway my paraview is already compiled with python.
>
> Thanks to all for this great feature.
>
> Felipe
>
>
> Le 18/02/2015 16:18, Dan Lipsa a écrit :
> > Hi Felipe,
> > I'll try to take a look at it today.
> >
> > Dan
> >
> >
> > On Wed, Feb 18, 2015 at 9:58 AM, Felipe Bordeu <
> felipe.bordeu at ec-nantes.fr <mailto:felipe.bordeu at ec-nantes.fr>
> <felipe.bordeu at ec-nantes.fr>> wrote:
> >
> >
> > Hi Dan,
> >
> > Yes I already saw the post, but is with python. I just want to send my
> data to paraview.
> >
> > I translated the related code for the live visu from python to c++. But
> I still missing something.
> >
> > Can some one look at the code (attached). It is a very simple adaptor
> with a very simple vtkCPVTKPipeline.
> >
> > The thing is I don't understand the way the vtkLiveInsituLink class know
> about the vtkPBTrivialProducer.
> >
> > Thanks to all.
> >
> > Felipe
> >
> >
> > Le 17/02/2015 21:43, Dan Lipsa a écrit :
> > > (just a forward of my previous response to the list)
> >
> > > ---------- Forwarded message ----------
> > > From: *Dan Lipsa* <dan.lipsa at kitware.com
> <mailto:dan.lipsa at kitware.com> <dan.lipsa at kitware.com>
> <mailto:dan.lipsa at kitware.com> <dan.lipsa at kitware.com>
> <mailto:dan.lipsa at kitware.com> <dan.lipsa at kitware.com>>
> > > Date: Tue, Feb 17, 2015 at 12:19 PM
> > > Subject: Re: [Paraview] Catalyst simple test
> > > To: Felipe Bordeu <felipe.bordeu at ec-nantes.fr
> <mailto:felipe.bordeu at ec-nantes.fr> <felipe.bordeu at ec-nantes.fr>
> <mailto:felipe.bordeu at ec-nantes.fr> <felipe.bordeu at ec-nantes.fr>
> <mailto:felipe.bordeu at ec-nantes.fr> <felipe.bordeu at ec-nantes.fr>>
> >
> >
> > > Hi Felipe,
> > > Have you seen: http://www.kitware.com/blog/home/post/722?
> >
> > > This blog post shows you how to setup a live connection and describe a
> simple pipeline using python.
> > > The pipeline was generated from Tools/Manage Plugins, Catalyst Script
> Generator Plugin, Load Selected. Then you can build your pipeline and
> export it using CoProcessing, Export State.
> >
> > > We don't have an example with only C++.
> > > Setting up the visualization pipeline as well as the connection to
> catalyst live, while possible, is more involved in C++.
> > > Basically, you'll have write in C++ some of the code in simple.py and
> coprocessing.py.
> >
> > > In your specific case, maybe you are missing the calls to
> >
> > > coprocessor.DoLiveVisualization(datadescription, "localhost", 22222)
> >
> > > or
> > > coprocessor.EnableLiveVisualization(True, 1)
> >
> > > These are lines from the python coprocessing script that you'll have
> to rewrite in C++.
> >
> > > Dan
> >
> >
> > > On Tue, Feb 17, 2015 at 10:54 AM, Felipe Bordeu <
> felipe.bordeu at ec-nantes.fr <mailto:felipe.bordeu at ec-nantes.fr>
> <felipe.bordeu at ec-nantes.fr> <mailto:felipe.bordeu at ec-nantes.fr>
> <felipe.bordeu at ec-nantes.fr> <mailto:felipe.bordeu at ec-nantes.fr>
> <felipe.bordeu at ec-nantes.fr>> wrote:
> >
> >
> > > Hi everybody,
> >
> > > I 'm trying to connect my simulation code (a dummy simulation code for
> > > the moment) to paraview using Catalyst to do live visualization. Just
> > > make a mesh (2D structured, with 1 field), and send it to paraview
> > > without python. But I something is not working. The code runs, I can
> > > connect to paraview, pause the simulation but unable to sent the data
> > > for the visualization.
> >
> > > So I'm doing this : for initialization
> >
> > > create a vtkCPProcessor object and call Initialize();
> > > create a vtkCPPipeline derived object class and added to the processor
> (
> > > Processor->AddPipeline(pipeline.GetPointer()); ) .
> > > (why do I need a Pipeline if I'm going to send my raw data (in vtk
> > > format of course) to paraview?)
> > > in the CoProcess( vtkCPDataDescription* dataDescription) member
> function
> > > the only relevant lines are :
> > > vtkNew<vtkPVTrivialProducer> producer;
> > > vtkImageData* grid =
> > >
> vtkImageData::SafeDownCast(dataDescription->GetInputDescriptionByName("input")->GetGrid());
> > > producer->SetOutput(grid,dataDescription->GetTime());
> >
> > > create a vtkLiveInsituLink
> > > LiveLink = vtkLiveInsituLink::New();
> > > LiveLink->SetInsituPort(22222);
> > > LiveLink->SetHostname("localhost");
> > > LiveLink->SetProcessType(vtkLiveInsituLink::INSITU);
> > > vtkSMProxyManager* proxyManager =
> vtkSMProxyManager::GetProxyManager();
> > > vtkSMSessionProxyManager* sessionProxyManager =
> > > proxyManager->GetActiveSessionProxyManager();
> > > LiveLink->Initialize(sessionProxyManager);
> >
> >
> > > then in each time-step I do :
> >
> > > vtkCPDataDescription* dataDescription = vtkCPDataDescription::New();
> > > dataDescription->AddInput("input");
> > > dataDescription-> SetTimeData(time, timeStep);
> > > if(Processor->RequestDataDescription(dataDescription) != 0){
> > > // Create a uniform grid
> > > vtkImageData* grid = vtkImageData::New();
> > > ....
> > > ""setextent, create DoubleArray, fill the array, put the array in the
> > > grid""
> > > ...
> > > dataDescription->GetInputDescriptionByName("input")->SetGrid(grid);
> > > grid->Delete();
> >
> > > Processor->CoProcess(dataDescription);
> >
> >
> > > (and also the LiveLink code, not sure about this) this is similar to
> the
> > > coprocessing.py
> >
> > > while(true){
> > > LiveLink->InsituUpdate(timeStep, time);
> >
> > > LiveLink->InsituPostProcess(time, timeStep);
> >
> > > if (LiveLink->GetSimulationPaused()){
> > > if (LiveLink->WaitForLiveChange()){
> > > break;
> > > }
> > > } else {
> > > break;
> > > }
> > > }
> >
> >
> > > I'm pretty sure I'm mixing the code for the different examples I found
> > > on the web and in the sources. I didn't find an example with pure c++
> > > and live viz.
> > > How I can tell to the LiveLink with data I want to sent to paraview???
> >
> > > using ParaView 4.3.1 compiled from git source in linux.
> >
> > > Thanks to all.
> >
> >
> >
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>
> - --
> 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
> Institut GeM - UMR CNRS 6183
> École Centrale Nantes
> 1 Rue de La Noë, 44321 Nantes, FRANCE
> - -------------------------------------
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