Hi
I used vtkSMPVRepresentationProxy::SetScalarColoring() as suggested ( which resolved the error message after I manually deleted my filter in the pipeline browser ) followed by vtkSMPVRepresentationProxy::RescaleTransferFunctionToDataRange() what allowed me to retrieve a valid RGBPoints array from the lookup table. myView->render() and setting the lookup table also helped me resolve the other issues and it all works nicely for me. Now I am trying to wrap up my algorithm into a filter class and thought that either RequestData() or RequestUpdateExtent() may be a good place to do it. Unfortunately the pipeline representation object is not available when I create the filter for the first time and press Apply. I also figured out that once the filter has been created, modified and the Apply button was pressed again the filter already knows that the representation is there. Is there a way around it to get this to work all the time or do I have to register a button which would need to be used after the filter has been created in the pipeline browser in order to update its properties for the first time ? Andrzej -----Original Message----- From: Utkarsh Ayachit [mailto:utkarsh.ayac...@kitware.com] Sent: 28 January 2016 15:07 To: Yumin Yuan Cc: Andrzej Peczak; paraview@paraview.org Subject: Re: [Paraview] Changing values of property panel As a side note, for changing coloring on representations, I'd suggest using vtkSMPVRepresentationProxy::SetScalarColoring() [1] instead of changing "ColorArrayName" directly. That takes care of setting up lookup table etc. ParaView would. [1] http://www.paraview.org/ParaView3/Doc/Nightly/www/cxx-doc/classvtkSMPVRepresentationProxy.html#acb45bfbb4940b0a6a30852aaff0a8b35 From: Yumin Yuan [mailto:yumin.y...@kitware.com] Sent: 28 January 2016 14:02 To: Andrzej Peczak Cc: paraview@paraview.org Subject: Re: [Paraview] Changing values of property panel Hi Andrzej, On Thu, Jan 28, 2016 at 8:25 AM, Andrzej Peczak <apec...@ara.co.uk<mailto:apec...@ara.co.uk>> wrote: Hi Yumin, I used your snippet and it is working fine. I also tried to change the properties of the upstream filter in addition to the active one but it put me into trouble. I am modifying the properties with the following code where I want to change the visibility, surface representation and input array of the upstream. When I execute the code the widgets get changed but nothing happens in the view with regards to the changes I made to the upstream, that is the upstream object stays invisible. To make the object visible I have to manually click on the active object. You may be missing a render call. Try adding the following at the end myView->render(); After that the upstream object becomes visible but then its colour mapping does not change in accordance with the input array I set to the upstream. You have to also set the same "LookupTable" to the upstream representation. The other issue I have is when I delete my object from the pipeline after modifying the lookup table. Paraview displays "vtkSMPVRepresentationProxy (0x2f6c8c0): Failed to determine the LookupTable being used." message. Which object? how did you delete it? Normally this message means you have an empty "LookupTable". HTH Yumin vtkSMProxy* repProxy = repr->getProxy(); const char * arrayName = vtkSMPropertyHelper(repProxy, "ColorArrayName").GetInputArrayNameToProcess(); int association = vtkSMPropertyHelper(repProxy, "ColorArrayName").GetInputArrayAssociation(); pqDataRepresentation * uRepr = repr->getRepresentationForUpstreamSource(); vtkSMProxy* uRepProxy = uRepr->getProxy(); vtkSMPropertyHelper( uRepProxy, "ColorArrayName" ).SetInputArrayToProcess( association, arrayName ); vtkSMPropertyHelper( uRepProxy, "ColorArrayName" ).Set( arrayName ); vtkSMPropertyHelper( uRepProxy, "Visibility" ).Set( 1 ); vtkSMPropertyHelper( uRepProxy, "Representation" ).Set( "Surface" ); repProxy->UpdateVTKObjects(); uRepProxy->UpdateVTKObjects(); Andrzej ________________________________ From: Yumin Yuan [yumin.y...@kitware.com<mailto:yumin.y...@kitware.com>] Sent: 27 January 2016 14:41 To: Andrzej Peczak Cc: paraview@paraview.org<mailto:paraview@paraview.org> Subject: Re: [Paraview] Changing values of property panel Hi Andrzej, The representation has its own SM proxy, vtkSMProxy* repProxy = repr->getProxy(); vtkSMPropertyHelper(repProxy, "Representation").Set("Surface With Edges"); vtkSMPropertyHelper(repProxy, "LineWidth").Set(2); HTH, Yumin On Wed, Jan 27, 2016 at 7:36 AM, Andrzej Peczak <apec...@ara.co.uk<mailto:apec...@ara.co.uk>> wrote: Hi I am trying to find a way to modify property values of a filter. I figured out how to change values of the lookup table through its proxy after which the changes are visible in the colour map editor panel widgets. I can do it with the following snippet code, however I have not found yet the way to change properties of the filter property panel. I need to change the view representation of the filter to Surface With Edges and the line width. Where do I acquire required proxy objects from ? pqPipelineRepresentation* repr = qobject_cast< pqPipelineRepresentation* >( pqActiveObjects::instance().activeRepresentation() ); if ( repr ) { vtkSMProxy * lutProxy = repr->getLookupTable()->getProxy(); if ( lutProxy ) { vtkSMPropertyHelper( lutProxy, "NumberOfTableValues" ).Set( this->scalars().count() - 1 ); lutProxy->UpdateVTKObjects(); } } Andrzej ********************************************************************** Please consider the environment. Only print this email if absolutely necessary. This email contains information that is private and confidential and is intended only for the addressee. If you are not the intended recipient please delete it and notify us immediately by e-mailing the sender. Note: All email sent to or from this address may be accessed by someone other than the recipient, for system management and security reasons. Aircraft Research Association Ltd. Registered in England, Registration No 503668 Registered Office: Manton Lane, Bedford MK41 7PF England VAT No GB 196351245 ********************************************************************** _______________________________________________ Powered by www.kitware.com<http://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 ********************************************************************** Please consider the environment. Only print this email if absolutely necessary. This email contains information that is private and confidential and is intended only for the addressee. If you are not the intended recipient please delete it and notify us immediately by e-mailing the sender. Note: All email sent to or from this address may be accessed by someone other than the recipient, for system management and security reasons. Aircraft Research Association Ltd. Registered in England, Registration No 503668 Registered Office: Manton Lane, Bedford MK41 7PF England VAT No GB 196351245 ********************************************************************** _______________________________________________ Powered by www.kitware.com<http://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 ********************************************************************** Please consider the environment. Only print this email if absolutely necessary. This email contains information that is private and confidential and is intended only for the addressee. If you are not the intended recipient please delete it and notify us immediately by e-mailing the sender. Note: All email sent to or from this address may be accessed by someone other than the recipient, for system management and security reasons. Aircraft Research Association Ltd. Registered in England, Registration No 503668 Registered Office: Manton Lane, Bedford MK41 7PF England VAT No GB 196351245 **********************************************************************
_______________________________________________ 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
