[ros-users] Error with *.stl format when using planning_environment and arm_navigation in unstable ROS version

[John Hsu]

Hi Felix,
Can you try and convert the stl meshes to binary stl meshes?
e.g.
rosrun ivcon ivcon input.stl output.stlb
And try loading the .stlb files.  You might also have to rename the .stlb
files back to.stl.
John
On Jan 28, 2011 6:24 AM, Felix Meßmer <Felix_Messmer at web.de> wrote:
> Dear community,
>
> I'm working on the Care-O-bot from Fraunhofer IPA, Stuttgart, Germany.
Specifically on motion planning.
> Therefore I adapted the pr2_arm_navigation launch- and config-files with
respect to the Care-O-bot a while ago. This was about 3 months ago.
> Since we did not use collision maps from sensor data for planning so far,
I enabled to use the collision map in the environment server.
> At that time, an exception was thrown from within the planning_environment
package.
> I fixed that in a local overlay and was then able to do planned motion
without using a collision map.
>
> The authors (Ioan Sucan and Sachin Chitta) confirmed that the error was an
already known issue.
> Unfortunately, the correct version hasn't been released yet and so I kept
on using my local overlay.
>
> In the meantime, the correct version can be found in the unstable ros
version.
> So I tried to run my launch files using the unstable ros version this
week. Since there were a lot of other changes, some changes had to be made.
>
> But still I am not able to get it running again, due to the following
error message:
>
>
> [ERROR] [1296142278.725676475, 95.657000000]: Failed to import scene
containing mesh: STL: ASCII file is empty or invalid; no data loaded.
Supported extensions are:
*.3d;*.3ds;*.ac;*.ac3d;*.acc;*.ase;*.ask;*.b3d;*.blend;*.bvh;*.cob;*.csm;*.dae;*.dxf;*.enff;*.hmp;*.irr;*.irrmesh;*.lwo;*.lws;*.lxo;*.md2;*.md3;*.md5anim;*.md5camera;*.md5mesh;*.mdc;*.mdl;*.mesh.xml;*.mot;*.ms3d;*.ndo;*.nff;*.obj;*.off;*.pk3;*.ply;*.prj;*.q3o;*.q3s;*.raw;*.scn;*.smd;*.stl;*.ter;*.uc;*.vta;*.x;*.xml
> [ERROR] [1296142278.726005869, 95.657000000]: Failed to load mesh
'package://cob_description/ros/meshes/torso_v0/tray_collision.stl'
>
>
> I get this message not only for the tray but all links that have a
*.stl-file in the geometry-definition of its collision tag in the respective
*.urdf.xacro file.
> We also had *.stl-collision models when the planning stuff worked 3 months
ago. But never encountered that error.
>
>
> I get that error message when I try to start any of the following nodes:
> - planning_environment
> - ompl_planning
> - trajectory_filter_server
>
> It seems like our *.stl files are not conform to the format that is
expected by these nodes!
>
>
> Does anyone encounter similar problems?
> Does anyone know anything about a certain format for the *.stl files in
the collision section?
> Any other hints?
>
>
> Thanks for your attention!
>
>
> Best regards,
> Felix
> ___________________________________________________________
> Neu: WEB.DE De-Mail - Einfach wie E-Mail, sicher wie ein Brief!
> Jetzt De-Mail-Adresse reservieren: https://produkte.web.de/go/demail02
> _______________________________________________
> ros-users mailing list
> ros-users at code.ros.org
> https://code.ros.org/mailman/listinfo/ros-users
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ros.org/pipermail/ros-users/attachments/20110128/6a6b5fc8/attachment-0003.html>