Dear sjoelund.se,

Thanks - you were quite right. Rather a noob request, I admit. I worked a lot with Dymola on Windows so far, but Linux is rather new to me...

Nethertheless, after some testing, 3d animation works nice! I managed to implement it via openscenegraph (OSG). Wasn't that easy to work out so I want to share my learnings:

Installation

1. Installation of modelica3D via Ubuntu Software-Center (Modelica Services...)
(Didn't see that coming at first place ,-)


Prepare System

2. Start the OSG script via the terminal:

python /usr/lib/omlibrary-modelica3d/osg-gtk/dbus-server.py

--> this script must be executed every time before starting a simulation in order to activate the animation



Start via OMEdit

3. Open OMEdit
4. Unload ModelicaServices (via right-Click on library)
5. Load ModelicaServices with working Modelica3D Library
File: /usr/lib/omlibrary/ModelicaServices 3.2.1 modelica3d/package.mo
6. Load my multibody system model (e.g. myMBSmodel.mo)
7. Add modelica3D - keywords within myMBSmodel.mo head:

  import M3D = ModelicaServices.Modelica3D;

  inner M3D.Controller m3d_control;

8. Start simulation

-> OSG animation starts automatically in new window


Start via OMShell
(Remark that modelica3D-keywords must be added before starting the simulation - see step 7 above!)

3. Open OMShell
4. Load Modelica Library

loadModel(Modelica)

5. Load Modelica3D Library

loadModelica3D()

6. Load my multibody system model (e.g. myMBSmodel.mo)

loadFile("/home/myFiles/myMBSmodel.mo")

7. Start simulation

simulate(myMBSmodel,startTime=0.0,stopTime=3.0)

-> OSG animation starts automatically in new window


I did not manage to implement an animation with blender yet. Starting the blender script returns the error massage:

>>python /usr/lib/omlibrary-modelica3d/blender2.59/dbus-server.py



Traceback (most recent call last):

  File "dbus-server.py", line 9, in <module>

    from bpy import ops, data, context

ImportError: No module named bpy

There seems to be something wrong with my python script. I suppose, I need python 3 to implement it... Any tipps welcome.

Enjoy the mbs-animation so far. Thanks to the OM-Team, I appreciate your work!


Regards,
Oliver

Dear all,

I just switched to OM (Linux) and now try to start 3D multibody animations. Unfortunately, I can't start any of it.

According to the release notes, I would expect to have modelica3D implemented within the latest OM environment:
https://www.openmodelica.org/index.php/ … 0-released
"3D graphics visualization using the Modelica3D library."

Is the only way to start it via this instruction:?
https://mlcontrol.uebb.tu-berlin.de/red … stallation

I installed the nightly build for Linux. My error message from OMShell is:

>> loadModelica3D()

false

Error: Failed to load package ModelicaServices (3.2.1 modelica3d) using MODELICAPATH /usr/lib/omlibrary:/home/oli/.openmodelica/libraries/.

Thanks in advance!