Hello everyone, Does anyone have idea where could be the problem in uploaded sources?
Thanks, Nenad. On Tue, May 10, 2011 at 12:13 PM, Nenad Vujicic <nena...@gmail.com> wrote: > Dear Utkarsh, > > Thank You very much, but unfortunately, adding manually copying of > parameters didn't solve all problems. I updated test plug-in with > manually copying, converting scalars to texture, applying texture to > actor and showing resulting actor in vtkRenderWindow. You can find > updated sources at > http://alas.matf.bg.ac.rs/~mr00053/projects/PVTest.zip. > > If You load again disk_out_ref.ex2, select H2 and try to export to > .my, You'll see in separate vtkRenderWindow same object with applied > generated > texture which looks very bad. Again, it works fine in v3.8.1. I > believe I'm not initializing new actors properly? Do You have some > idea how to fix it? > > Thanks, > Nenad. > > > On Mon, May 9, 2011 at 10:02 PM, Utkarsh Ayachit > <utkarsh.ayac...@kitware.com> wrote: >> The problem is pretty straight forward. Looks like >> vtkMapper::ShallowCopy(..) does not copy the state of >> InterpolateScalarsBeforeMapping. I will commit a fix for that for next >> release. Until then, you'll have to manually copy ivars that you care >> about. >> >> Utkarsh >> >> On Sun, May 8, 2011 at 10:25 AM, Nenad Vujicic <nena...@gmail.com> wrote: >>> Dear Utkarsh, >>> >>> I uploaded test plugin that shows my problem at >>> http://alas.matf.bg.ac.rs/~mr00053/projects/PVTest.zip. >>> >>> After I build and load the plugin from Qt client, I load >>> disk_out_ref.ex2, select "H2" for mapping scalars, check Interpolate >>> Scalars on Display tab in Object inspector and go on File->Export >>> (select .my file). I get 6 message boxes which report 0, 0, 0, 0, 0, 1 >>> (instead of 0, 0, 0, 0, 1, 1) as values for >>> vtkMapper::InterpolateScalarsBeforeMapping. So, here is first >>> question: "How to create multiple vtkActor objects from >>> vtkCompositePolyDataMapper2's input"? I thought that vtkMyExporter.cpp >>> Ln 138-162 should be fine, but uploaded sources shows different. >>> >>> Thanks, >>> Nenad. >>> >>> On Fri, May 6, 2011 at 2:29 PM, Utkarsh Ayachit >>> <utkarsh.ayac...@kitware.com> wrote: >>>> Nenad, >>>> >>>> There;s nothing much different about the vtkCompositePolyDataMapper or >>>> vtkPolyDataMapper as far as the state of the >>>> InterpolateScalarsBeforeMapping flag goes. I cannot see how that >>>> variable can return false if it is indeed set to true as you are >>>> saying. Can you share the plugin? >>>> >>>> Utkarsh >>>> >>>> On Thu, May 5, 2011 at 6:03 PM, Nenad Vujicic <nena...@gmail.com> wrote: >>>>> Hello everyone, >>>>> >>>>> Perhaps I was a bit unclear in my previous messages. Here are more >>>>> details about the problem and test case. >>>>> >>>>> I use ParaView v3.10.1 release sources, Visual Studio 2008 SP1, Python >>>>> 2.7, OpenMPI 1.4.3 on Vista SP2. I compiled sources with standard >>>>> options (just turned on BUILD_SHARED_LIBS, MPI and Python). I derived >>>>> new class from vtkExporter, vtkMyExporter, and in >>>>> vtkMyExporter::WriteData() I call code specified down. The problem is >>>>> in QMessage line, which reports always 0, even when this flag is >>>>> turned on. Same is happening with most of other parameters. >>>>> >>>>> I believe that learning how to decompose composite ptrActor into >>>>> several actors with vtkPolyDataMapper mapper and vtkPolyData data will >>>>> solve all other problems (which occur when generating texture from >>>>> scalars). At the moment, I'm interested only in actors which use >>>>> vtkCompositePolyDataMapper2 mappers. As input I use disk_out_ref.ex2 >>>>> with selected H2 (or any other channel) for mapping colors. Does >>>>> anyone have any idea how this can be done? Btw, this worked perfectly >>>>> under ParaView v.3.8.1 and with RenderWindow created using VTK 5.4.2 >>>>> (where I create vtkCompositePolyDataMapper2 and populate it manually). >>>>> >>>>> Thank You very much for Your help! >>>>> >>>>> Best regards, >>>>> Nenad. >>>>> >>>>> -------------------- >>>>> >>>>> 1) Get interactive renderer 'InteractiveRenderer' from >>>>> vtkMyExporter::RenderWindow >>>>> 2) For every actor 'ptrActor' (3D actors only) in InteractiveRenderer do: >>>>> >>>>> vtkCompositeDataIterator* actor_iterator; >>>>> vtkCompositePolyDataMapper2* composite_mapper = NULL; >>>>> >>>>> // get actor's mapper >>>>> vtkMapper* mapper = ptrActor->GetMapper(); >>>>> if(mapper == NULL) >>>>> return true; // discard >>>>> >>>>> // get mapper's input >>>>> vtkCompositeDataSet* composite_input_data = >>>>> dynamic_cast<vtkCompositeDataSet*>(mapper->GetInputDataObject(0, 0)); >>>>> if(composite_input_data != NULL) >>>>> { >>>>> // get actor's composite mapper >>>>> composite_mapper = >>>>> dynamic_cast<vtkCompositePolyDataMapper2*>(mapper); >>>>> if(composite_mapper == NULL) >>>>> return false; >>>>> >>>>> // in case input data is composite object, get iterator for >>>>> traversing >>>>> actor_iterator = composite_input_data->NewIterator(); >>>>> >>>>> // initialize iterator for traversing >>>>> actor_iterator->InitTraversal(); >>>>> actor_iterator->GoToFirstItem(); >>>>> } >>>>> else >>>>> actor_iterator = NULL; >>>>> >>>>> // export all components of input actor >>>>> for(;;) >>>>> { >>>>> vtkSmartPointer<vtkActor> actor; >>>>> >>>>> // if input data is composite object, create actor with >>>>> current component as data, otherwise use entire actor (I do this >>>>> because I need actor with vtkPolyDataMapper and vtkPolyData data for >>>>> vtkScalarsToColorsPainter) >>>>> if(actor_iterator != NULL) >>>>> { >>>>> // check if there are no more components >>>>> if(actor_iterator->IsDoneWithTraversal()) >>>>> break; >>>>> >>>>> // get next component >>>>> vtkDataObject* data_object = >>>>> actor_iterator->GetCurrentDataObject(); >>>>> if(dynamic_cast<vtkPolyData*>(data_object) != NULL) >>>>> { >>>>> // get poly data >>>>> vtkPolyData* poly_data = >>>>> dynamic_cast<vtkPolyData*>(data_object); >>>>> >>>>> // create new temporary poly data mapper >>>>> vtkSmartPointer<vtkPolyDataMapper> poly_data_mapper = >>>>> vtkSmartPointer<vtkPolyDataMapper>::New(); >>>>> >>>>> // copy mapper's parameters >>>>> poly_data_mapper->ShallowCopy(composite_mapper); >>>>> >>>>> // set mapper's input >>>>> poly_data_mapper->SetInput(poly_data); >>>>> >>>>> // create new actor >>>>> actor = vtkSmartPointer<vtkActor>::New(); >>>>> >>>>> // copy actor parameters >>>>> actor->ShallowCopy(ptrActor); >>>>> >>>>> // set actor's mapper >>>>> actor->SetMapper(poly_data_mapper); >>>>> } >>>>> else >>>>> { >>>>> return false; >>>>> } >>>>> } >>>>> else >>>>> actor = ptrActor; >>>>> >>>>> // report some actor's property >>>>> QMessageBox::about(NULL, "", >>>>> QString::number(ptrActor->GetMapper()->GetInterpolateScalarsBeforeMapping())); >>>>> >>>>> // perform transformation from scalars to texture using >>>>> vtkScalarsToColorsPainter class >>>>> >>>>> // extract data from ptrActor (I use previously generated >>>>> texture instead of colors / scalars) >>>>> >>>>> // write to my custom format >>>>> >>>>> // if input is not composite, break the loop >>>>> if(composite_input_data == NULL) >>>>> break; >>>>> >>>>> // set iterator on next item >>>>> if(actor_iterator != NULL) >>>>> actor_iterator->GoToNextItem(); >>>>> } >>>>> >>>>> >>>>> ---------------------------------------------------------------------------------------------------- >>>>> >>>>> On Wed, May 4, 2011 at 3:04 PM, Utkarsh Ayachit >>>>> <utkarsh.ayac...@kitware.com> wrote: >>>>>> Nenad, >>>>>> >>>>>> I am not sure I understand where this code is being put. You say it's >>>>>> an exporter? Meaning it exports to something like a vrml/x3d file? But >>>>>> that doesn't seem right since you say you are using the >>>>>> PolyDataMapper. >>>>>> >>>>>> What is this plugin trying to achieve? >>>>>> >>>>>> Utkarsh >>>>>> >>>>>> On Wed, May 4, 2011 at 8:31 AM, Nenad Vujicic <nena...@gmail.com> wrote: >>>>>>> Hello everyone, >>>>>>> >>>>>>> I'm having some problems with porting my ParaView exporter plug-in to >>>>>>> v3.10, because ParaView started using vtkCompositeDataSet internally >>>>>>> instead of keeping components merged. The problem is in performing >>>>>>> transformation of scalars to texture using vtkScalarsToColorsPainter >>>>>>> class. Here is approximately my code (questions come after >>>>>>> pseudo-code): >>>>>>> >>>>>>> for every actor in currently active renderer: >>>>>>> for every component of composite data object (I retrieve >>>>>>> vtkDataObject* with vtkCompositeDataIterator::GetCurrentDataObject() >>>>>>> call) >>>>>>> >>>>>>> // prepare new actor which defines component >>>>>>> dynamic cast vtkDataObject* data_object to vtkPolyData* poly_data; >>>>>>> create new vtkPolyDataMapper* pdm; >>>>>>> pdm->ShallowCopy(composite_mapper); >>>>>>> pdm->SetInput(poly_data); >>>>>>> allocate new actor and do actor->ShallowCopy(ptrActor) // >>>>>>> ptrActor) is selected actor from currently active renderer - line 1 >>>>>>> actor->SetMapper(pdm); >>>>>>> >>>>>>> // perform converting from scalars to texture >>>>>>> ConvertScalarsToColors(actor); >>>>>>> >>>>>>> Routine ConvertScalarsToColors(vtkActor*) is defined in following way: >>>>>>> >>>>>>> L1 get actor's poly_data and mapper references, >>>>>>> L2 create s2c - instance of MyVtkScalarsToColorsPainter (derived from >>>>>>> vtkScalarsToColorsPainter for allowing setting its protected >>>>>>> attributes), >>>>>>> L3 initialize s2c parameters from mapper and poly_data >>>>>>> L4 if s2c->CanUseTextureMapForColoring(poly_data) returns true, >>>>>>> s2c->PrepareForRendering(), get texture and texture coordinates and >>>>>>> sets them to passed actor >>>>>>> >>>>>>> Q1: First problem is in L3 when setting s2c parameters. Original >>>>>>> mapper has turned on InterpolateScalarsBeforeMapping flag, but new one >>>>>>> doesn't have it. How to safely copy properties of >>>>>>> vtkCompositePolyDataMapper2 to vtkPolyDataMapper or I shouldn't do it? >>>>>>> >>>>>>> Q2: Even if I override above problem by turning on manually >>>>>>> InterpolateScalarsBeforeMapping, I get very bad texture on output. It >>>>>>> looks like scalars were not interpolated before mapping, sometimes >>>>>>> even more distorted.. >>>>>>> >>>>>>> The same code works with v3.8 perfectly. I also tried to apply >>>>>>> vtkCompositeDataGeometryFilter to composite data object and to apply >>>>>>> ConvertScalarsToColors() to result (even without creating new actor), >>>>>>> but without success. Strange thing is that when I try this with >>>>>>> manually created VTK scene (out of ParaView) it works perfectly and >>>>>>> texture looks great! >>>>>>> >>>>>>> I would appreciate any help! >>>>>>> >>>>>>> Best regards, >>>>>>> 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 >>>>>>> >>>>>>> Follow this link to subscribe/unsubscribe: >>>>>>> http://www.paraview.org/mailman/listinfo/paraview >>>>>>> >>>>>> >>>>> _______________________________________________ >>>>> 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 >>>>> >>>>> Follow this link to subscribe/unsubscribe: >>>>> http://www.paraview.org/mailman/listinfo/paraview >>>>> >>>> >>> _______________________________________________ >>> 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 >>> >>> Follow this link to subscribe/unsubscribe: >>> http://www.paraview.org/mailman/listinfo/paraview >>> >> > _______________________________________________ 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 Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
