[vtkusers] 3D axis that follows main actor

Thu Sep 9 23:34:53 EDT 2010

Please post a complete python example that crashes and I'll take a look.

Bill

On Thu, Sep 9, 2010 at 11:05 AM, Rodrigo Valiña Gutiérrez
<rodrigo.valina at usc.es> wrote:
> On Thu, Sep 9, 2010 at 2:22 PM, Bill Lorensen <bill.lorensen at gmail.com>
> wrote:
>>
>> Try this:
>>
>> http://vtk.org/Wiki/VTK/Examples/Cxx/Visualization/DisplayCoordinateAxes#AxesIndicator.cxx
>> or for a more sophisticated "axes", this:
>> http://www.vtk.org/Wiki/VTK/Examples/Cxx/Widgets/OrientationMarkerWidget
>>
>
> Thanks, I think that it should do, but it keeps giving me Segmentation
> Fault...
>
> With Python 2.6.5, VTK 5.2.1-14ubuntu4, and Ubuntu 10.04, and this code:
>
> axes = vtk.vtkAxesActor()
> vomw = vtk.vtkOrientationMarkerWidget()
> vomw.SetOutlineColor( 0.9300, 0.5700, 0.1300 )
> vomw.SetOrientationMarker( axes )
> #vomw.SetDefaultRenderer( self.ren )
> vomw.SetInteractor( self.iren )
> vomw.SetViewport( 0.0, 0.0, 0.4, 0.4 )
> vomw.SetEnabled( 1 )
> vomw.InteractiveOn( )
>
> It crashes:
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x0530497d in vtkRenderer::GetActiveCamera() () from
> /usr/lib/libvtkRendering.so.5.2
> (gdb) bt
> #0  0x0530497d in vtkRenderer::GetActiveCamera() () from
> /usr/lib/libvtkRendering.so.5.2
> #1  0x07b3f05a in
> vtkOrientationMarkerWidget::ExecuteCameraUpdateEvent(vtkObject*, unsigned
> long, void*) ()
>    from /usr/lib/libvtkWidgets.so.5.2
> #2  0x07b40499 in vtkOrientationMarkerWidgetObserver::Execute(vtkObject*,
> unsigned long, void*) ()
>    from /usr/lib/libvtkWidgets.so.5.2
> #3  0x0264f922 in vtkSubjectHelper::InvokeEvent(unsigned long, void*,
> vtkObject*) () from /usr/lib/libvtkCommon.so.5.2
> #4  0x0264f9d8 in vtkObject::InvokeEvent(unsigned long, void*) () from
> /usr/lib/libvtkCommon.so.5.2
> #5  0x05306f80 in vtkRenderer::Render() () from
> /usr/lib/libvtkRendering.so.5.2
> #6  0x053032bb in vtkRendererCollection::Render() () from
> /usr/lib/libvtkRendering.so.5.2
> #7  0x0531352f in vtkRenderWindow::DoStereoRender() () from
> /usr/lib/libvtkRendering.so.5.2
> #8  0x05313910 in vtkRenderWindow::DoFDRender() () from
> /usr/lib/libvtkRendering.so.5.2
> #9  0x05314d1c in vtkRenderWindow::DoAARender() () from
> /usr/lib/libvtkRendering.so.5.2
> #10 0x05313a55 in vtkRenderWindow::Render() () from
> /usr/lib/libvtkRendering.so.5.2
> #11 0x053b64b4 in vtkXOpenGLRenderWindow::Render() () from
> /usr/lib/libvtkRendering.so.5.2
> #12 0x050a2635 in ?? () from /usr/lib/libvtkRenderingPythonD.so.5.2
> #13 0x080e0a21 in PyEval_EvalFrameEx ()
> #14 0x080e1bb0 in PyEval_EvalFrameEx ()
> #15 0x080e2807 in PyEval_EvalCodeEx ()
> #16 0x0816b2ac in ?? ()
> #17 0x0806245a in PyObject_Call ()
> #18 0x0806a45c in ?? ()
> #19 0x0806245a in PyObject_Call ()
> #20 0x080db892 in PyEval_CallObjectWithKeywords ()
> ---Type <return> to continue, or q <return> to quit---
> #21 0x004a2c1e in wxPyCallback::EventThunker(wxEvent&) () from
> /usr/lib/python2.6/dist-packages/wx-2.8-gtk2-unicode/wx/_core_.so
> #22 0x00d0ca9f in wxAppConsole::HandleEvent(wxEvtHandler*, void
> (wxEvtHandler::*)(wxEvent&), wxEvent&) const ()
>    from /usr/lib/libwx_baseu-2.8.so.0
> #23 0x00dab209 in wxEvtHandler::ProcessEventIfMatches(wxEventTableEntryBase
> const&, wxEvtHandler*, wxEvent&) ()
>    from /usr/lib/libwx_baseu-2.8.so.0
> #24 0x00dab398 in wxEvtHandler::SearchDynamicEventTable(wxEvent&) () from
> /usr/lib/libwx_baseu-2.8.so.0
> #25 0x00dac3a5 in wxEvtHandler::ProcessEvent(wxEvent&) () from
> /usr/lib/libwx_baseu-2.8.so.0
> #26 0x07ea42a2 in wxGLCanvas::OnInternalIdle() () from
> /usr/lib/libwx_gtk2u_gl-2.8.so.0
> #27 0x00afa415 in wxAppBase::SendIdleEvents(wxWindow*, wxIdleEvent&) () from
> /usr/lib/libwx_gtk2u_core-2.8.so.0
> #28 0x00afa449 in wxAppBase::SendIdleEvents(wxWindow*, wxIdleEvent&) () from
> /usr/lib/libwx_gtk2u_core-2.8.so.0
> #29 0x00afa449 in wxAppBase::SendIdleEvents(wxWindow*, wxIdleEvent&) () from
> /usr/lib/libwx_gtk2u_core-2.8.so.0
> #30 0x00afa449 in wxAppBase::SendIdleEvents(wxWindow*, wxIdleEvent&) () from
> /usr/lib/libwx_gtk2u_core-2.8.so.0
> #31 0x00afa449 in wxAppBase::SendIdleEvents(wxWindow*, wxIdleEvent&) () from
> /usr/lib/libwx_gtk2u_core-2.8.so.0
> #32 0x00afa449 in wxAppBase::SendIdleEvents(wxWindow*, wxIdleEvent&) () from
> /usr/lib/libwx_gtk2u_core-2.8.so.0
> #33 0x00afa449 in wxAppBase::SendIdleEvents(wxWindow*, wxIdleEvent&) () from
> /usr/lib/libwx_gtk2u_core-2.8.so.0
> #34 0x00afa6c1 in wxAppBase::ProcessIdle() () from
> /usr/lib/libwx_gtk2u_core-2.8.so.0
> #35 0x00a4e2c3 in ?? () from /usr/lib/libwx_gtk2u_core-2.8.so.0
> #36 0x01604661 in ?? () from /lib/libglib-2.0.so.0
> #37 0x016065e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
> #38 0x0160a2d8 in ?? () from /lib/libglib-2.0.so.0
> #39 0x0160a817 in g_main_loop_run () from /lib/libglib-2.0.so.0
> #40 0x010603c9 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
> #41 0x00a67708 in wxEventLoop::Run() () from
> /usr/lib/libwx_gtk2u_core-2.8.so.0
> ---Type <return> to continue, or q <return> to quit---
> #42 0x00afa4de in wxAppBase::MainLoop() () from
> /usr/lib/libwx_gtk2u_core-2.8.so.0
> #43 0x004a0b92 in wxPyApp::MainLoop() () from
> /usr/lib/python2.6/dist-packages/wx-2.8-gtk2-unicode/wx/_core_.so
> #44 0x005139da in ?? () from
> /usr/lib/python2.6/dist-packages/wx-2.8-gtk2-unicode/wx/_core_.so
> #45 0x080e0f4d in PyEval_EvalFrameEx ()
> #46 0x080e2807 in PyEval_EvalCodeEx ()
> #47 0x0816b2ac in ?? ()
> #48 0x0806245a in PyObject_Call ()
> #49 0x0806a45c in ?? ()
> #50 0x0806245a in PyObject_Call ()
> #51 0x080e0471 in PyEval_EvalFrameEx ()
> #52 0x080e1bb0 in PyEval_EvalFrameEx ()
> #53 0x080e1bb0 in PyEval_EvalFrameEx ()
> #54 0x080e2807 in PyEval_EvalCodeEx ()
> #55 0x080e2907 in PyEval_EvalCode ()
> #56 0x081005ad in PyRun_FileExFlags ()
> #57 0x08100812 in PyRun_SimpleFileExFlags ()
> #58 0x0805de5c in Py_Main ()
> #59 0x0805d03b in main ()
>
> --------
>
>>
>> On Thu, Sep 9, 2010 at 7:56 AM, Rodrigo Valiña Gutiérrez
>> <rodrigo.valina at usc.es> wrote:
>> > On Thu, Sep 9, 2010 at 11:45 AM, David Doria <daviddoria+vtk at gmail.com>
>> > wrote:
>> >>
>> >> On Thu, Sep 9, 2010 at 4:44 AM, Rodrigo Valiña Gutiérrez
>> >> <rodrigo.valina at usc.es> wrote:
>> >> > Hi,
>> >> >
>> >> > I want an actor or a way to draw an object composed of 3 arrows for X
>> >> > Y
>> >> > and
>> >> > Z axes, in the lower left corner of the window, and orients itself
>> >> > acording
>> >> > to the rotation of the camera. I do not want it to zoom or displace.
>> >> > It
>> >> > should be like the one ParaView has in the lower left corner.
>> >> >
>> >> > Is there any simple way to do it?
>> >> >
>> >> > --
>> >> > Rodrigo
>> >>
>> >> This should do the trick;
>> >>
>> >> http://www.vtk.org/Wiki/VTK/Examples/Cxx/GeometricObjects/Axes
>> >>
>> >> David
>> >
>> > It does not work for me.
>> > The code in the link places the object in world coordinates, and the
>> > object
>> > moves and zooms with the rest of the scene.
>> > I wanted an object that was fixed-size and fixed-position (lower left
>> > corner
>> > of the visualization), and only oriented itself like the other objects
>> > in
>> > the scene.
>> >
>> > --
>> > Rodrigo
>> >
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