[Paraview] Troubles with exporting selection labels from current ParaView render view

[Utkarsh Ayachit]

I am not sure I follow you description. Do you have some example code
to share/demonstrate the issue?

On Sat, May 16, 2015 at 6:54 AM, Nenad Vujicic <nenadus at gmail.com> wrote:
> Hello again,
>
> I have one another problem with the latest PV sources (v4.3.1, I used
> VS2008 x64 built with most of extra packages from super-build enabled)
> and creating labels. Again everything worked fine on v4.0 (and I think
> v4.2), but now, not anymore .. Here is what I tried:
>
> 1. I created a source plugin which outputs on output port 0 set of
> points and on output port 1 set of lines.
> 2. I registered handlers to catch signals sourceAdded(),
> sourceCreated(), representationAdded(), representationRemoved() etc,
> 3. In handler for RepresentationAdded, when representation for output
> port 0 (set of points) is created, I previously created
> DataLabelRepresentation and initialized, but now it just reports data
> representation is reported and does nothing..
> 4. Now, I tried to set some parameters of representation subproxy by:
>
> // set representation's properties
> pqSMAdaptor::setElementProperty(mptrPointsRepresentation->getProxy()->GetProperty("SelectionVisibility"),
> true);
> pqSMAdaptor::setElementProperty(mptrPointsRepresentation->getProxy()->GetProperty("SelectionPointLabelVisibility"),
> true);
> pqSMAdaptor::setMultipleElementProperty(mptrPointsRepresentation->getProxy()->GetProperty("SelectionPointLabelColor"),
> rPointLabelColor);
> pqSMAdaptor::setElementProperty(mptPointsRepresentation->getProxy()->GetProperty("SelectionPointLabelFontSize"),
> iPointLabelSize);
> pqSMAdaptor::setElementProperty(mptrPointsRepresentation->getProxy()->GetProperty("SelectionPointLabelFormat"),
> strPointLabelFormat);
> pqSMAdaptor::setElementProperty(mptrPointsRepresentation->getProxy()->GetProperty("SelectionPointLabelJustification"),
> iPointLabelJustification);
>
> // update underlying VTK objects
> mptrPointsRepresentation->getProxy()->UpdateVTKObjects();
>
> But, it still doesn't work.
>
> Btw, when I create sphere, apply elevation and select some points
> (with started tracing), I don't see any of these parameters turned ON.
> I don't see anything about selected points .. Also, I noticed
> selections are not preserved in state files.
>
> Thanks in advance for any help!
>
> Nenad.
>
>
> On Wed, May 13, 2015 at 2:21 PM, Nenad Vujicic <nenadus at gmail.com> wrote:
>> Hello everyone,
>>
>> It has been a long time ParaView sources worked excellent with my
>> patches and the plugin (3D exporter). However, I'm having troubles
>> with the latest version (v4.3.1) to export labels which are shown over
>> selected points (both per point and per cell). This was my approach
>> which worked with v4.0.1 (100% sure) and v4.2 (I think, but, I'm not
>> definitely sure):
>>
>> 1. I traverse all visible pipeline sources and for all their
>> representations in currently active view do next,
>> 2. For every representation, I check if it is DataLabelRepresentation
>> and if it is I save PointLabelVisibility, PointFieldDataArrayName, etc
>> properties ..
>> 3. From other representations, I get vtkLODActor for which I bind my
>> labels properties,
>> 4. In exporting code, I get current view, traverse its actors and
>> export them, however, there is one problem now. Let me give an
>> example:
>>
>>     - If I have Sphere on which I applied Elevation filter and
>> selected several points with turned on labels (with e.g. Elevation
>> selected as array),
>>
>>     - Strange 1: I don't have anymore instance in
>> DataLabelRepresentation for Elevation pipeline source (btw, during
>> this traversing I get only one actor),
>>     - 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.
>>
>> 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?
>>
>> Thanks everyone for possible answers!
>>
>> Nenad.
> _______________________________________________
> 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