[Paraview] Programmable Source & MultiBlockDataSet

[Aurélien Marsan]

ah....

So : I use file in format v3d.
For a mesh that contains two blocks, they would be called called
block1_timestep1.v3d, block2_timestep1.v3d, block1_timestep2.v3d,
block2_timestep2.v3d, etc...

Actually, I open these v3d_files with a python tool that I have
writen, translate them as vtk.vtkStructuredGrid, and write several files on
the disk as TimeStep1.vtm, TimeStep2.vtm and Simulation.pvd
But this takes a lot a disk space, and reading/writing takes a lot of time.

So I would like to open the v3d file directly in paraview.
That's why I though to use a Programmable Source in order to read all v3d
files and create a "Temporal Data Set".


Le 23 avril 2010 16:35, Utkarsh Ayachit <utkarsh.ayachit at kitware.com> a
écrit :

> Temporal DataSet! Filters shouldn't be producing temporal dataset
> explicitly. Why do you need it?
>
> Utkarsh
>
> 2010/4/23 Aurélien Marsan <aur.marsan at gmail.com>:
> > thanks !
> > And so, could you add "Temporal Data Set" to this commit ?
> > Le 23 avril 2010 16:28, Utkarsh Ayachit <utkarsh.ayachit at kitware.com> a
> > écrit :
> >
> >> I've just committed a change to ParaView to allow setting output type
> >> to be a multiblock dataset.
> >>
> >> Commit id: c7472789ba86210e190f398a90eebc081a66d40c
> >>
> >> Utkarsh
> >>
> >> 2010/4/23 Aurélien Marsan <aur.marsan at gmail.com>:
> >> > I found a solution to do what I wanted to do. Not really elegant, but
> it
> >> > works.
> >> > The best would be to encode the reader in the source code.... but I
> >> > don't
> >> > know how to do, and have no time for now.
> >> >
> >> > First, I use the tool Source -> Data Object Generator, and create a
> >> > MultiBlockDataSet.
> >> >>
> >> >> MB{}
> >> >
> >> >
> >> > Then, I use a Programmable Filter, and set the Output Data Type "Same
> as
> >> > Input".
> >> > So I can use this script.
> >> >
> >> >>
> >> >> from Moduleperso import *
> >> >> m = MultiBlocFromV3D(........)       # This is a personnal reader in
> >> >> python, that returns a vtkMultiBlockDataSet
> >> >> self.GetOutputDataObject(0).DeepCopy(m)
> >> >
> >> >
> >> > Hope this will help some people who don't want to go in source code...
> >> >
> >> > Le 23 avril 2010 14:07, Aurélien Marsan <aur.marsan at gmail.com> a
> écrit :
> >> >>
> >> >> Maybe I have found a way to avoid the Programmable Source...
> >> >>
> >> >> But Is it possible to export an object created in the python shell
> >> >> directly into the pipeline of the paraview interface ?
> >> >>
> >> >> Le 22 avril 2010 15:36, Aurélien Marsan <aur.marsan at gmail.com> a
> écrit
> >> >> :
> >> >>>
> >> >>> Hi,
> >> >>>
> >> >>> A new thing I don't know how to do with Paraview.
> >> >>> I have written a personnal reader, that creates vtkStructuredGrid
> from
> >> >>> files written in so called format "v3d". So I'm able to construct a
> >> >>> MutliBlockDataSet, that is composed of all the Blocks I'm working
> >> >>> with.
> >> >>>
> >> >>> I would like to use "Programmable Source", so we don't need to write
> >> >>> the
> >> >>> file on the disk before to open it with Paraview.
> >> >>> Does "Programmable Source" work with MultiBlockDataSet ? I don't see
> >> >>> this
> >> >>> class in the Output Data Set Type that we can choose...
> >> >>>
> >> >>> And is it correct if I write in the Script of the Programmable
> Filter
> >> >>> :
> >> >>>
> >> >>> from perso import *
> >> >>> multiblock = MultiBlockDataSetFromV3D(.....)
> >> >>> self.GetOutput().DeepCopy(multiblock)
> >> >>>
> >> >>> Thanks for help.
> >> >>>
> >> >>> A.MARSAN
> >> >
> >> >
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