Dear Utkarsh, I'm sorry for delay, I was out of home for a while.
Yes, I think this will help. Thank you very much for your help! Nenad. On Sat, May 30, 2015 at 4:10 PM, Utkarsh Ayachit <utkarsh.ayac...@kitware.com> wrote: > Nenad, > > DataLabelRepresentation is a subproxy of the GeometryRepresentation and that > has been the case since as long as I remember. That means that when you > iterate over representations in the view, you'll never see a separate > DataLabelRepresentation proxy. Each source proxy has a GetSelectionOutput > method that you can use to get the source proxy which is doing the > "extracting" tasks to extract selected points. To see if the source proxy > has a "selection" set, you can use the vtkSMSourceProxy::GetSelectionInput() > method. > > Hope that helps. > Utkarsh > > On Fri, May 22, 2015 at 7:15 AM Nenad Vujicic <nena...@gmail.com> wrote: >> >> Utkarsh, >> >> Thank you very much for answers about creating and initializing >> DataLabelRepresentation. Now my source plugin works perfectly. >> >> But, my exporting plugin (my first message) is still unable to export >> labels which I get when try selecting several points. Here is what I >> do: >> >> 1. Create Sphere and apply Elevation filter on it (I turn OFF 3d widget), >> 2. I select several points and in Selection Manager I select Elevation >> for Point Labels, >> 3. In following code snippet I get only 2 message boxes (one of Sphere >> and one for Elevation - both GeometryRepresentation),, but, there is >> no DataLabelRepresentation. >> 4. I know how to extract labels parameters at this level (Selection* >> parameters from representation), but not set of points over which are >> generated labels, >> >> // for all sources >> for(i = 0; i < sources.size(); i++) >> { >> // get source >> pqPipelineSource* source = sources.at(i); >> >> // for every source's output port, process it >> for(output_port = 0; output_port < >> source->getNumberOfOutputPorts(); output_port++) >> { >> // traverse all representations >> for(j = 0; j < source->getRepresentations(output_port, >> active_view).count(); j++) >> { >> QMessageBox::about(NULL, "", >> GetCurrentSourceRepresentationSMName()); >> } >> } >> } >> >> Should I try to catch >> pqSelectionManager::selectionChanged(pqOutputPort*) to get data >> structure over which are points which I can compare with data >> structures extracted from vtkRenderWindow to generate labels? >> >> Thanks for help in advance! >> >> Nenad. >> >> On Mon, May 18, 2015 at 3:49 PM, Utkarsh Ayachit >> <utkarsh.ayac...@kitware.com> wrote: >> >> - Strange 1: I don't have anymore instance in >> >> DataLabelRepresentation for Elevation pipeline source (btw, during >> >> this traversing I get only one actor), >> > >> > I don't follow. DataLableRepresentation is indeed created for every >> > representation shown in the render view. >> > >> > >> >> - Strange 2: When I traverse vtkRenderer's actors, I get 2 actors >> >> (sphere mesh and actor with selected points), but, I'm unable to >> >> connect selection label properties (which are tied with Elevation >> >> pipeline source actor - sphere mesh) and mesh with selected points / >> >> cells. >> > >> > Remember that label actors are added to the 2D / non-composited >> > renderer, not the same as the 3D renderer. Which renderer are you >> > looking at? >> > >> >> Q1: How to identify actor from vtkRenderer which contains selection >> >> points / cells and get selection properties from this actor or >> >> >> >> Q2: How to identify actor from pqPipeline source on which are selected >> >> points and how from appropriate representations to get actor which >> >> contains selected points / cells? >> > >> > Neither of these are really supported. Look at >> > vtkSelectionRepresentation. If you can think of ways of "tagging" the >> > actors added by the representations used internally by this class, I >> > am all ears. _______________________________________________ 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