[Paraview-developers] apply a filter to only a selected block
Felipe Bordeu
felipe.bordeu at ec-nantes.fr
Tue Sep 2 10:17:47 EDT 2014
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Le 28/08/2014 18:49, Utkarsh Ayachit a écrit :
> Maybe go the custom filter route instead. You cannot have a choice of
> filters to chose from a comb-box, in that case. But you can create a
> ExtractBlock+Filter version of every filter you're interested in.
> Something similar to how we deal with file-series readers, for
> example.
>
It works like a charm!!!
I created a class (called vtkApplyOnBlocksFilter) to apply a filter to
only selected blocks. Then a vtkSIMetaFilterProxy (like the
vtkSIMetaReaderProxy).And now just generate one "SourceProxy" entry in
the xml description for every filter that I want to use.
Life is so much easier now. The added bonus. I put all theses new
filters in a submenu "On Block Filters" with theirs original icons.
Now any new ApplyOnBlocksFilters filters can be added to ParaView using
only a xml description.
Thanks Utkarsh and all the ParaView team.
Felipe
>
>
> On Thu, Aug 28, 2014 at 12:04 PM, Felipe Bordeu
> <felipe.bordeu at ec-nantes.fr> wrote:
> Thanks,
>
> It works, but (I know there is always a but)...
>
> 1) Paraview (at the creation of my mainfilter) calls RequestInformation
> on all the internal filters available, and because they don't have
> connections, I get plenty of :
>
> ERROR: In
> /Big/fbordeu/sources/ParaView4/VTK/Common/ExecutionModel/vtkExecutive.cxx,
> line 783
> vtkPVCompositeDataPipeline (0x686f5b0): Algorithm
> vtkPVArrayCalculator(0x6875210) returned failure for request:
> vtkInformation (0x686dde0)
>
> ERROR: In
> /Big/fbordeu/sources/ParaView4/VTK/Common/ExecutionModel/vtkDemandDrivenPipeline.cxx,
> line 710
> vtkPVCompositeDataPipeline (0x6940a30): Input port 0 of algorithm
> vtkPVMetaClipDataSet(0x6921660) has 0 connections but is not optional.
>
>
> ERROR: In
> /Big/fbordeu/sources/ParaView4/VTK/Common/ExecutionModel/vtkDemandDrivenPipeline.cxx,
> line 710
> vtkPVCompositeDataPipeline (0x6969450): Input port 0 of algorithm
> vtkThreshold(0x696f170) has 0 connections but is not optional.
>
>
> ERROR: In
> /Big/fbordeu/sources/ParaView4/VTK/Common/ExecutionModel/vtkDemandDrivenPipeline.cxx,
> line 710
> vtkPVCompositeDataPipeline (0x6977740): Input port 0 of algorithm
> vtkDataSetSurfaceFilter(0x697f540) has 0 connections but is not optional.
>
> 2) The panels of filters with custom widget are not generated correctly
> (the case of the calculator filter).
>
> 3) Because of the filters don't have information about the input, the 3D
> widget are not plot in the renderview ( the plane of the clip filter)
>
> I know I'm trying to do something tricky, but we do this kind of
> operation often (extract a block apply a filter, extract another block
> apply a filter, extract all the remaining block, and then do "append
> datasets" to recover a multi-block structure). And even with this we
> lost the original structure of the multi-block.
>
> the point 2 and tree are not that important (we can set the data from
> the panel, and for the calculator we still have the function field)
>
> Felipe
>
> ps: in the attachement there is an image of the filter
>
> Le 28/08/2014 16:30, Utkarsh Ayachit a écrit :
>>>> I am not sure I'd recommend anyone to do this :), but since you're
>>>> experimenting .. here's something to try:
>>>>
>>>> Don't do the SetInputDataObject() in RequestInformation, try passing
>>>> the output of ExtractBlock to the input in RequestData() instead.
>>>>
>>>> Utkarsh
>>>>
>>>> On Wed, Aug 27, 2014 at 10:03 AM, Felipe Bordeu
>>>> <felipe.bordeu at ec-nantes.fr> wrote:
>>>> Hi,
>>>>
>>>> I'm writing a filter to apply a filter(for example a cut, or clip ) to
>>>> only a selected block of a vtkMultiBlockData.
>>>>
>>>> So I start reading the implementation of the vtkExtractBlock and
>>>> vtkPVGlyphFilter (because I what to select interactively the filter to
>>>> apply in the same way we can choose the type of glyph).
>>>>
>>>> Now the problematic point. This is the part of the xml to select the
>>>> filter to apply (in the same way as the glyph filter) :
>>>>
>>>>
>>>> <InputProperty command="SetalgoToApply"
>>>> label="Filter To Apply"
>>>> name="Source">
>>>>
>>>> <ProxyGroupDomain name="groups">
>>>> <Group name="filters" />
>>>> </ProxyGroupDomain>
>>>>
>>>> <DataTypeDomain name="input_type" composite_data_supported="1">
>>>> <DataType value="vtkDataObject" />
>>>> </DataTypeDomain>
>>>>
>>>> <ProxyListDomain name="proxy_list">
>>>> <Proxy group="filters" name="Cut" />
>>>> <!-- More filter here -->
>>>> </ProxyListDomain>
>>>> </InputProperty>
>>>>
>>>> The interface is generated correctly in paraview.
>>>> In the code a receive the algorithm with this function
>>>>
>>>> vtkfiltertest::vtkSetMacro(algoToApply, vtkAlgorithmOutput*);
>>>>
>>>>
>>>> But I don't know how to set the input to the algorithm.
>>>>
>>>> I tried this (vtkDataSet* tmpinput is a pointer to some data, )
>>>>
>>>> void vtkfiltertest::SetalgoToApply (vtkAlgorithmOutput* _arg) {
>>>> if (this->algoToApply != _arg) {
>>>> this->algoToApply = _arg;
>>>> this->algoToApply->GetProducer()->SetInputDataObject(0,tmpinput);
>>>> this->Modified();
>>>> }
>>>> }
>>>>
>>>> and also in
>>>> vtkfiltertest::RequestInformation(){
>>>> ...
>>>> this->algoToApply->GetProducer()->SetInputDataObject(0,tmpinput);
>>>> ..
>>>> }
>>>>
>>>> but in paraview when I create the vtkfiltertest (click in the menu) I
>>>> get this:
>>>>
>>>> ERROR: In
>>>> /Big/fbordeu/sources/ParaView4/VTK/Common/ExecutionModel/vtkDemandDrivenPipeline.cxx,
>>>> line 710
>>>> vtkPVCompositeDataPipeline (0x7845e80): Input port 0 of algorithm
>>>> vtkPVMetaSliceDataSet(0x783d880) has 0 connections but is not optional.
>>>>
>>>> Is this possible of I'm asking to much???
>>>>
>>>> Thanks.
>>>>> _______________________________________________
>>>>> Paraview-developers mailing list
>>>>> Paraview-developers at paraview.org
>>>>> http://public.kitware.com/mailman/listinfo/paraview-developers
>
- --
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
- -------------------------------------
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
iQEcBAEBAgAGBQJUBdGGAAoJEE/fMfNgU9/DcCYH/ic1RytF5WNehxqYeyerNeBQ
0IymWxeiWm+Zi5cOKwx4ebdSkl6Mmks1httD7+ojGqppSTJ6feNaQQhx/29haQv6
z99Yc5tefz5qIRsKQnfI36fgDhl+o/Fp7025L/6gmE2y+lTdgbIaiHRsp11ZVgk0
ys2wzdUbb69UFU++9pWhO6E7ebPG8jVfqMAL3QCDmQfqY1tDdGj8o5GRf8Gm2a2s
lZeSrzT0MibiyMjkKzWF3ygDiJa1BN0fJcO0+cYTxn9yUG/xaI16iImBcvpW97Rg
GD7ctUQm2ooUzMugpMekFtIJWzIIj61kBqBsmSYYQecjcqGheBgfT2whTO4enOc=
=btJx
-----END PGP SIGNATURE-----
More information about the Paraview-developers
mailing list