Hi Cory, I attach the complete sources for compiling and testing the described problem. (Tested with Paraview 5.0.1 compiled from sources.)
Corinna On Thu, Jul 7, 2016 at 7:31 PM, corinna reuter <corinnareute...@gmail.com> wrote: > Yes, FillOutputPortInformation already looks exactly as you say. > > I gave the link to the complete example code in my initial question: > http://www.vtk.org/Wiki/VTK_Examples_vtkAlgorithm_Source > I changed a few lines to make it compile with Paraview 5.0.1 (see the > comments in the CMakeLists.txt with my initial question). In addition, I > can send to you tomorrow a small source archive ready for compilation. > > I'll also check vtkTable to see if it solves my problem. I thought of just > deriving the vtkTest class from vtkDataSet and returning a fake, empty > dataset while keeping the information from which the actual vtkDataSet will > be processed downstream in the pipeline. Do you think that this workaround > is feasible, or what other problems should I excpect? > > Thank you > Corinna > > > On Thu, Jul 7, 2016 at 3:03 PM, Cory Quammen <cory.quam...@kitware.com> > wrote: > >> Hi Corinna, >> >> Does vtkTestSource override the FillOutputPortInformation() member >> function? It should look like >> >> >> //---------------------------------------------------------------------------- >> int vtkTestSource::FillOutputPortInformation( >> int vtkNotUsed(port), vtkInformation* info) >> { >> // now add our info >> info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkTest"); >> return 1; >> } >> >> If that doesn't fix the error, let us know. >> >> You may run into other problems with a custom data object - you may >> want to derive your vtkTest class from one of the vtkDataObject >> ParaView works with, e.g., vtkTable. >> >> Thanks, >> Cory >> >> On Thu, Jul 7, 2016 at 1:44 AM, corinna reuter >> <corinnareute...@gmail.com> wrote: >> > Doesn't anybody know, why a vtkAlgorithm which produces a custom class >> > (vtkTest) that is not derived from vtkDataSet show the error "... but a >> > vtkPolyData is required"? >> > >> > A side remark, previously I wrote that the custom class "vtkTest" is >> neither >> > derived from vtkDataSet nor from vtkDataObject. Actually it is derived >> from >> > vtkDataObject. >> > >> > If my question doesn't make sense, please let me know. Maybe it is >> against >> > every paraview design, so that I'll have to find a completely different >> > solution. But it becomes more and more urgent for me to include a data >> > source (mySQL database) of custom classes (not vtkDataSets) in the >> paraview >> > tree. >> > >> > Thank you >> > Corinna >> > >> > On Mon, Jul 4, 2016 at 3:09 PM, corinna reuter < >> corinnareute...@gmail.com> >> > wrote: >> >> >> >> To anybody experienced in plugin programming: >> >> >> >> I am trying to include items in the paraview tree, which are not >> derived >> >> from vtkDataSet or vtkDataObject. For example, a mySQL database should >> be >> >> allowed as a data source, which delivers data in an intermediate >> format. >> >> Next I'd implement filters which take the intermediate format and >> produce >> >> vtkDataSets as output. >> >> >> >> Is it possible to use such "abstract" (not vtkDataSet) objects in the >> >> paraview tree as a representation of the intermediate format? I have >> tried >> >> to integrate the example for custom classes from >> >> http://www.vtk.org/Wiki/VTK_Examples_vtkAlgorithm_Source into a >> paraview >> >> plugin (CMakeLists and servermanager xml below). When the plugin is >> loaded >> >> and I add a source of the new type AlgorithmSourceExample, this error >> is >> >> thrown: >> >> >> >> ERROR: In >> >> >> /opt/ParaView-v5.0.1/VTK/Common/ExecutionModel/vtkDemandDrivenPipeline.cxx, >> >> line 810 >> >> vtkPVPostFilterExecutive (0x3857810): Input for connection index 0 on >> >> input port index 0 for algorithm vtkPVPostFilter(0x3858910) is of type >> >> vtkTest, but a vtkPolyData is required. >> >> >> >> What do I need to change such that the vtkTest objects, produced by >> >> AlgorithmSourceExample, can live in the paraview tree? >> >> >> >> Thank you >> >> Corinna >> >> >> >> CMakeLists.txt: >> >> >> >> FIND_PACKAGE(ParaView REQUIRED) >> >> INCLUDE(${PARAVIEW_USE_FILE}) >> >> #changes required in >> >> http://www.vtk.org/Wiki/VTK_Examples_vtkAlgorithm_Source: >> >> # remove vtkCxxRevisionMacro calls >> >> # change vtkTypeRevisionMacro into vtkTypeMacro >> >> # remove call output->SetPipelineInformation( outInfo ); >> >> ADD_PARAVIEW_PLUGIN( >> >> AlgorithmSourceExample >> >> "1.0" >> >> SERVER_MANAGER_XML AlgorithmSourceExample.xml >> >> SERVER_MANAGER_SOURCES vtkTestSource.cxx vtkTest.cxx >> >> ) >> >> >> >> AlgorithmSourceExample.xml: >> >> >> >> <ServerManagerConfiguration> >> >> <ProxyGroup name="sources"> >> >> <SourceProxy name="AlgorithmSourceExample" class="vtkTestSource" >> >> label="AlgorithmSourceExample"> >> >> <Documentation >> >> long_help="AlgorithmSourceExample" >> >> short_help="AlgorithmSourceExample"> >> >> </Documentation> >> >> </SourceProxy> >> >> </ProxyGroup> >> >> </ServerManagerConfiguration> >> > >> > >> > >> > _______________________________________________ >> > Powered by www.kitware.com >> > >> > Visit other Kitware open-source projects at >> > http://www.kitware.com/opensource/opensource.html >> > >> > Please keep messages on-topic and check the ParaView Wiki at: >> > http://paraview.org/Wiki/ParaView >> > >> > Search the list archives at: http://markmail.org/search/?q=ParaView >> > >> > Follow this link to subscribe/unsubscribe: >> > http://public.kitware.com/mailman/listinfo/paraview >> > >> >> >> >> -- >> Cory Quammen >> R&D Engineer >> Kitware, Inc. >> > >
Test.tgz
Description: GNU Zip compressed data
_______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Search the list archives at: http://markmail.org/search/?q=ParaView Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview