[vtkusers] limitations using vtkAxesActor?

Jothybasu Selvaraj jothybasu at gmail.com
Mon Apr 16 04:48:26 EDT 2012


I just tried replacing my vtkAnnotatedCube with vtkAxesActor. It works fine
as expected!

So the vtkAxesActor is not to be blamed.

There seem to be some problem with your code.

Do you have all the headers included?

Can you create a compilable example of your problem?

Jothy

On Fri, Apr 13, 2012 at 9:32 PM, bnsteel <bnsteel at gmail.com> wrote:

> hello,
>
> I have been unsuccessful in using a vtkAxesActor in my application. And
> wonder if there is some limitation that is not documented.
>
> I have followed the tutorials to use both the Testing_Data_Bunny.vtp
> iconActor in the orientation widget and the sphere
>
> http://www.vtk.org/Wiki/VTK/Examples/Cxx/Visualization/DisplayCoordinateAxes
>
> My bunny showed up and worked fine, but when I swapped the bunny for the
> vtkAxesActor as the orientation marker, I get a crash.  I have created a
> C++
> dll that I am calling from a c# application.  I pass the handle of my
> render
> window to the C++ class that handles the 3D data and vtk setup.  Everything
> is working just fine except the axes actor!
>
>               // axesWidget declared as
> vtkSmartPointer<vtkOrientationMarkerWidget>  in .h
>                axesWidget =
> vtkSmartPointer<vtkOrientationMarkerWidget>::New();
>                vtkSmartPointer<vtkAxesActor> axes =
> vtkSmartPointer<vtkAxesActor>::New();
>              // tried with and without label and text property setup here
> as in tutorials
>                axesWidget->SetOrientationMarker(axes); // works fine if
> this is iconActor
>                axesWidget->SetOutlineColor( 0.93, 0.57, 0.13 );
>                axesWidget->SetInteractor(renWin->GetInteractor());
>                axesWidget->SetViewport(0.0, 0.0, 0.25, 0.25);
>                axesWidget->EnabledOn();
>                axesWidget->InteractiveOff();
>                renWin->Render();
>
> Everything is fine until I try to render.  Then I get the standard error
> message about reading or writing restricted memory.
>
> To simplify things, I try to just add a vtkAxesActor actor to my test
> window:
>
>       // added cone actor as in examples
>        vtkSmartPointer<vtkAxesActor> axes =
> vtkSmartPointer<vtkAxesActor>::New();
>        renderer->AddActor(axes); // comment out this line == no crash
>        renWin->Render();
>
> Again, it crashes when I try to render.  If I just don't add the
> vtkAxesActor to the orientation marker or the renderer, everything is fine.
>
> The flow of my code is as follows:
>
> Using a panel, m_panel, create a RenderWindowCotnrol Object as in Activiz
> // C#
>     m_RenderWindow = Kitware.VTK.vtkRenderWindow.New();
>     m_RenderWindowInteractor = Kitware.VTK.vtkRenderWindowInteractor.New();
>
>     Kitware.VTK.vtkInteractorStyleSwitch style =
> this.m_RenderWindowInteractor.GetInteractorStyle()
>         as Kitware.VTK.vtkInteractorStyleSwitch;
>
>      if (null != style) style.SetCurrentStyleToTrackballCamera();
>
>     m_RenderWindow.SetInteractor(this.m_RenderWindowInteractor);
>     m_RenderWindow.SetParentId(m_panel.Handle);
>
> // then send handle of render window to C++ object using SWIG object test3d
>        test3d.setRenderWindow(RenderWindow.GetCppThis());
>
> // in C++
>
> void setRenderWindow(vtkRenderWindow *theWin){
>        renWin = theWin;
>        renderer = vtkSmartPointer<vtkRenderer>::New();
>        renWin->AddRenderer(renderer);
>        initWidgets(); // set up vtkOrientationMarkerWidge
>        testAddActors(); // create cone actor, add to renderer, and then
> try to
> render.
> }
>
> Is there anything that I am doing wrong?  Everything compiles fine.  I have
> included vtkAxesActor.h and linked to vtkHybrid.lib and vtkWidget.lib.  It
> did work just fine when I was using ActiviZ in C#, but it was too expensive
> to move my 3D data from C++ where it is processed into C# for display.  I
> thought it would be better to handle the data in C++ and just use C# for
> the
> GUI.  The 3D is only a small portion of the main Application
>
> Please let me know what additional information would help understand why
> the
> renderer doesn't like vtkAxesActor .
>
> Brooke
>
> --
> View this message in context:
> http://vtk.1045678.n5.nabble.com/limitations-using-vtkAxesActor-tp5639488p5639488.html
> Sent from the VTK - Users mailing list archive at Nabble.com.
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-- 
Jothy
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