[vtkusers] Trouble with QVTK
Wagner Sales
wsales at gmail.com
Thu May 21 20:08:20 EDT 2009
Hi Joshua,
I downloaded your code and compiled. To me, at least at first
impression, works fine. I see the objects, change background, etc.
Regards,
Wagner
2009/5/21 Joshua Pedrick <jpedrick at gmail.com>:
> Ok, I guess I wasn't clear. I am using CentOS 5.2 64-bit. Qt sdk 2009.02 (Qt
> v4.5.1). I've built VTK to include GUISupport and Qt support. I've tried to
> replicate the GUI4 example. Using the GUI 4 example I get all the correct
> behavior, including changing the background, but I can not see any 3D VTK
> objects(cone or sphere) in the RenderWindows. I've the relevent source
> files.
>
> So, I was hoping for an example that actually worked or some advice as to
> what I have done incorrectly.
>
> Regards,
> -Joshua
>
>
> On Thu, May 21, 2009 at 10:16 AM, Clinton Stimpson <clinton at elemtech.com>
> wrote:
>>
>> There are examples in VTK/Examples/GUI/Qt.
>> Both SimpleView/ and Events/ have designer .ui files.
>>
>> Clint
>>
>> Joshua Pedrick wrote:
>>>
>>> Does anyone have a working example using QVTK + QtDesigner on Linux that
>>> I could try to compare?
>>>
>>> On Tue, May 12, 2009 at 1:16 PM, Joshua Pedrick <jpedrick at gmail.com
>>> <mailto:jpedrick at gmail.com>> wrote:
>>>
>>> Hello again Leo,
>>> Here's my code once again, but distilled and reordered a bit.
>>> I removed all the Deletes and whatnot. I'm still not getting
>>> anything but the gradient background. Any clues?
>>> I downloaded and compiled VTK-5.4 with QVTK, using Qt version
>>> 4.5.1 from Qt SDK 2009.02. Still no luck. So the latest VTK from
>>> CVS and version 5.4 aren't working. I can't be the only one using
>>> QVTK. I am not using cmake to build my project, could this be the
>>> problem? Are there some compiler flags I need to set for QVTK to
>>> work?
>>>
>>>
>>> Regards,
>>> -Joshua
>>>
>>> void MainWindow::SetupScene()
>>> {
>>> QVTKWidget* qvtkwidget = ui.qvtkWidget;
>>>
>>> qvtkwidget->GetRenderWindow()->DoubleBufferOff();
>>>
>>>
>>> //Put cone in window
>>> {
>>> vtkConeSource *cone = vtkConeSource::New();
>>>
>>> //Create Cone Mapper.
>>> vtkPolyDataMapper *coneMapper = vtkPolyDataMapper::New();
>>> coneMapper->SetInputConnection(cone->GetOutputPort());
>>>
>>> //Create Cone Actor
>>>
>>> vtkActor *coneActor = vtkActor::New();
>>> coneActor->SetMapper(coneMapper);
>>>
>>> //Create Cone Renderer
>>> vtkRenderer *ren = vtkRenderer::New();
>>> ren->SetBackground(0,0,0);
>>> ren->SetBackground2(1,1,1);
>>> ren->GradientBackgroundOn();
>>>
>>> ren->AddActor(coneActor);
>>>
>>> qvtkwidget->GetRenderWindow()->AddRenderer(ren);
>>>
>>> }
>>>
>>> }
>>>
>>> 2009/5/12 L.J. van Ruijven <L.J.vanRuijven at amc.uva.nl
>>> <mailto:L.J.vanRuijven at amc.uva.nl>>
>>>
>>> Hi Joshua,
>>>
>>> I allready deleted your first mail, so I cannot check the code
>>> again, but I think here the background renderer is added. So
>>> that one is really drawn in the render window.
>>> But if I remember well, you created the pipeline for the cone
>>> in a separate fragment. And in the end of this fragment you
>>> deleted the cone renderer, but you never added it to the
>>> render window.
>>>
>>> regards,
>>>
>>> Leo.
>>>
>>>
>>> ----- Original Message -----
>>> From: Joshua Pedrick <jpedrick at gmail.com
>>> <mailto:jpedrick at gmail.com>>
>>> Date: Tuesday, May 12, 2009 3:36 pm
>>> Subject: Re: Trouble with QVTK
>>> To: vtkusers at vtk.org <mailto:vtkusers at vtk.org>
>>> Cc: "L.J. van Ruijven" <L.J.vanRuijven at amc.uva.nl
>>> <mailto:L.J.vanRuijven at amc.uva.nl>>
>>>
>>>
>>> > L.J. I think I do this in MainWindow::SetupScene() at the
>>> very end:
>>> >
>>> > qvtkwidget->GetRenderWindow()->AddRenderer(ren);
>>> > qvtkwidget->GetRenderWindow()->BordersOn();
>>> >
>>> > ren->Delete();
>>> >
>>> > Is this not the correct way to add a renderer? I do get the
>>> lovely gradient
>>> > background I applied to the renderer, but no actors. The
>>> gradient background
>>> > makes me think the renderer is properly connected to the
>>> render window.
>>> >
>>> > I'm going to compile the stable version of VTK today and
>>> see how it goes.
>>> > I'm really suspecting there is a bug in the CVS QVTK.
>>> >
>>> > Regards
>>> > -Joshua
>>> >
>>> > 2009/5/12 L.J. van Ruijven <L.J.vanRuijven at amc.uva.nl
>>> <mailto:L.J.vanRuijven at amc.uva.nl>>
>>> >
>>> > > Hi Joshua,
>>> > >
>>> > > I think you forgot to connect the renderer to the
>>> renderwindow. Somewhere
>>> > > you should add the statement renWin->AddRenderer(ren).
>>> > >
>>> > > regards,
>>> > >
>>> > > Leo
>>> > >
>>> > >
>>> > >
>>> >
>>>
>>>
>>>
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>>>
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>>
>>
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>
>
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