[ros-users] rviz is moving to Qt, preview available

[Dave Hershberger]

Hi Dorian, nice work!

Regarding the assertion on reopening the rviz_qt plugin:

Ogre has lots of "Singleton" (i.e. weakly-disguised global) objects.  I
haven't looked into the details yet, but your error message indicates that
the singleton for the Ogre::LogManager is being initialized every time the
rviz_qt plugin is opened, rather than just the first time it is opened.
 There may be lots of similar problems.  You are doing the first test of
the rviz_qt library outside of the rviz_qt binary. :)

Dave

On Fri, Dec 2, 2011 at 8:45 AM, Dorian Scholz <scholz at sim.tu-darmstadt.de>wrote:

>  Hi Dave,
>
> these are great news!
> I tested it today and it seems to work fine.
> So I went on and made a first simple integration as a rosgui plugin.
> The plugin just loads the rviz_qt lib, instantiates the VisualizationFrame
> and puts it into a dockwidget for rosgui.
> The code is in the rosgui git and a screenshot of it running next to some
> other plugins can be seen here:
> http://img18.imageshack.us/img18/8414/rosguirviz.png
>
> I came across one problem though. When I closed the plugin and reopened
> it, an assertion is failing:
>
> python:
> /tmp/buildd/ros-electric-visualization-common-1.6.2/debian/ros-electric-visualization-common/opt/ros/electric/stacks/visualization_common/ogre/build/ogre_src_v1-7-3/OgreMain/include/OgreSingleton.h:80:
> Ogre::Singleton<T>::Singleton() [with T = Ogre::LogManager]: Assertion
> `!ms_Singleton' failed.
> Aborted
>
> I have not yet investigated this any further. I'll file a bug report when
> I know more...
>
> Cheers,
> Dorian
>
>
>
> On 12/01/2011 06:29 PM, Dave Hershberger wrote:
>
> Rviz is moving from the wxWidgets library to the Qt library as of the ROS
> Fuerte release.  This transition to Qt will improve RViz compatibility on
> more platforms and better integrate with future GUI tools.  For more
> information on the motivation for these changes, please refer to the RViz
> and ROS GUI SIGs:
>
> http://ros.org/wiki/fuerte/Planning/rviz
> http://ros.org/wiki/fuerte/Planning/ROS%20GUI
>
> This is a fairly big change to the code.  The internal plugin API
> is changed and the Python API will be different (when I get
> it implemented).  The GUI appears and behaves mostly the same as the
> wx version, most of the differences coming from the differences in style
> between wx and Qt and not from intentional changes.  For a list of major
> changes, see visualization_experimental/ChangeList<http://www.ros.org/wiki/visualization_experimental/ChangeList>
> .
>
> An early but fairly complete, version of the new code is available in the
> temporary "visualization_experimental<http://www.ros.org/wiki/visualization_experimental>"
> stack, which works with ROS Electric.  It is available in
> the ros-electric-visualization-experimental debian package.  This
> version does not have python support implemented yet, but all the
> built-in display types, tools, and view controllers work.   I encourage
> rviz users to try the new version (called rviz_qt for now) before Fuerte
> so I can fix bugs and make the transition as smooth as possible.
>
>  Please report bugs and feature requests to the same place as usual for
> rviz, but with "qt" in the keywords field, like so: report a bug<https://code.ros.org/trac/ros-pkg/newticket?component=visualization&type=defect&keywords=qt>,
> request a feature<https://code.ros.org/trac/ros-pkg/newticket?component=visualization&type=enhancement&keywords=qt>,
> list existing tickets<https://code.ros.org/trac/ros-pkg/query?status=assigned&status=new&status=reopened&component=visualization&keywords=%7Eqt>
> .
>
> Thanks,
> Dave
>
>
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>
>
> --
> Dipl.-Inform. Dorian Scholz         E-Mail:scholz(at)sim.tu-darmstadt.de
> Simulation, Systems Optimization    Phone:  +49 (0) 6151 16-4811
> and Robotics Group                  Fax:    +49 (0) 6151 16-6648
> Technische Universität Darmstadt    http://www.sim.tu-darmstadt.de
> Hochschulstr. 10                    D-64289 Darmstadt, Germany
>
>
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