[Paraview] [ParaView] Load VRML question...

[pat marion]

pqPipelineSource is a type of pqProxy, so you can call getProxy() on
it to get a vtkSMProxy*.  From there you can access the properties
that you are seeing in the GUI.  It looks like the transform filter
has just one property, and it's a proxy property representing the
actual transform (named Transform3 and described in utilities.xml).
So you'll probably need to call GetProperty("Transform") and downcast
the returned pointer to vtkSMProxyProperty.  From the
vtkSMProxyProperty you can get another vtkSMProxy pointer, and this
vtkSMProxy should have the actual Position, Translation, and Scale
properties.

After you modify properties you can call UpdateVTKObjects() on the
vtkSMProxy, this is similar to clicking the Apply button.

http://www.paraview.org/ParaView3/Doc/Nightly/html/classvtkSMProxy.html
http://www.paraview.org/ParaView3/Doc/Nightly/html/classvtkSMProperty.html

Pat


2009/7/16 Andrés Felipe Padilla <anfeken at gmail.com>:
> Thanks a lotUtkarsh, we can now load our model. We are trying now to create
> a transform filter for moving the model around. We are creating it the same
> way we create a source (with pqObjectBuilder) but we have not found a way to
> specify the transformation attributes (rotation, translation, scaling)
> without using the GUI. We have read the filters.xml and there are such
> propeties specifying those attributes. However, it is not clear how we can
> manipulate those attributes via pqObjectBuilder or via pqPipelineSource.
> Thanks.
>
> 2009/7/15 Utkarsh Ayachit <utkarsh.ayachit at kitware.com>
>>
>> For some reason the proxy is named "vrmlreader" (all lowercase). Try
>> using that name when calling createSource().
>>
>> If you run into such issues, you can always look at
>> ParaView3Source/Servers/ServerManager/Resources/readers.xml to
>> determine the name of the proxy for the reader you want to create.
>>
>> Utkarsh
>>
>> 2009/7/15 Andrés Felipe Padilla <anfeken at gmail.com>:
>> > We tried the following using the vtkVRMLSource
>> >
>> > std::string file = "/models/flag.wrl";
>> > leVRML = vtkVRMLSource::New();
>> > leVRML->SetFileName(file.c_str());
>> >
>> > However, we do not know how to visualize the VRMLObject in the Active
>> > View.
>> >
>> > We tried the following using pqObjectBuilder:
>> >
>> >  pqPendingDisplayManager *pdm =
>> >
>> > qobject_cast<pqPendingDisplayManager*>(pqApplicationCore::instance()->manager("PENDING_DI
>> > SPLAY_MANAGER"));
>> > pdm->setAddSourceIgnored(true);
>> > leSource = builder->createSource("sources", "VRMLSource", s);
>> > leSource->getProxy()->UpdateVTKObjects();
>> > pdm->setAddSourceIgnored(false);
>> > leSource->setModifiedState(pqProxy::UNMODIFIED);
>> > pqOutputPort* oPort = leSource->getOutputPort(0);
>> > builder->createDataRepresentation(oPort,
>> > pqActiveView::instance().current());
>> > (pqActiveView::instance().current())->render();
>> >
>> > but VRMLSource does not exist, so this approach fails. We were trying to
>> > look if creating a proxy with the vtkVRMLSource would work but we
>> > haven't
>> > figure that out yet. Can this source be added via an XML or something
>> > (*throwing some ideas) so it can be used with the objectBuilder?
>> >
>> > Thanks.
>> >
>> > Andrés
>> >
>> > 2009/7/15 Utkarsh Ayachit <utkarsh.ayachit at kitware.com>
>> >>
>> >> What you described should work. Can you post relevant sections of the
>> >> code?
>> >>
>> >> Utkarsh
>> >>
>> >> 2009/7/15 Andrés Felipe Padilla <anfeken at gmail.com>:
>> >> > Thanks for your quick answer Utkarsh. However, we are trying to load
>> >> > a
>> >> > VRML
>> >> > file without having to use the menus. We are using vtkVRMLSource, but
>> >> > we
>> >> > don't know to visualize it. We are trying to use the pqObjectBuilder
>> >> > methods, createSource and createDataRepresentation, but it does not
>> >> > work
>> >> > with VRML files. Is there a way for loading and displaying the file
>> >> > without
>> >> > using the menus? Thanks a lot for your help.
>> >> >
>> >> > 2009/7/13 Utkarsh Ayachit <utkarsh.ayachit at kitware.com>
>> >> >>
>> >> >> You can simply open a vrml file as if you are loading a data file
>> >> >> using "File |Open". ParaView will create the vtkVRMLSource for you.
>> >> >>
>> >> >> vtkVRMLSource has methods like SetFileName that you use to set the
>> >> >> filename programmatically and they are indeed public.
>> >> >>
>> >> >> Utkarsh
>> >> >>
>> >> >> 2009/7/13 Andrés Felipe Padilla <anfeken at gmail.com>:
>> >> >> > Hi,
>> >> >> > I've been trying to load a VRML on ParaView unsucessfully from
>> >> >> > code.
>> >> >> > From
>> >> >> > the API and the code i see that the vtkVRMLSource could allow one
>> >> >> > to
>> >> >> > load a
>> >> >> > VRML but i have some issues with it. I create a vtkVRMLSource with
>> >> >> > the
>> >> >> > New()
>> >> >> > method but from there i cant see where to go. I cannot specify
>> >> >> > this
>> >> >> > object
>> >> >> > the file i want to load as all its members are protected. So my
>> >> >> > question
>> >> >> > is
>> >> >> > how do i tell the vtkVRMLSource to load my VRML?
>> >> >> > Thanks
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>> >> >
>> >> >
>> >
>> >
>
>
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