Visualize robot Rhino 8

compas_fab
1

Hello Compas,

it seems I can’t have this basic example file to run in Rhino 8. I only tested Version 8 SR9 (8.9.24194.18121, 2024-07-12).

Here a list of the exceptions I get for the different installations of compas_fab:

IronPython, installed via conda-forge.

Message: init() takes exactly 2 arguments (4 given)
Traceback:
line 107, in add, “C:\Users\xyz\anaconda3\envs\compas-dev\Lib\site-packages\compas\scene\scene.py”
line 16, in , “C:\Users\xyz\AppData\Local\Temp\TempScript.py”

Cpython, installed with pip from ./rhinocode/py39-rh8

Traceback (most recent call last):
File “file:///C:/Users/xyz/.rhinocode/stage/eo44qpbf.lzk”, line 16, in
File “C:\Users\xyz.rhinocode\py39-rh8\lib\site-packages\compas\scene\scene.py”, line 107, in add
sceneobject = SceneObject(item=item, context=self.context, **kwargs) # type: ignore
File “C:\Users\xyz.rhinocode\py39-rh8\lib\site-packages\compas\scene\sceneobject.py”, line 88, in new
sceneobject_cls = get_sceneobject_cls(item, **kwargs)
File “C:\Users\xyz.rhinocode\py39-rh8\lib\site-packages\compas\scene\context.py”, line 152, in get_sceneobject_cls
cls = _get_sceneobject_cls(item, **kwargs)
File “C:\Users\xyz.rhinocode\py39-rh8\lib\site-packages\compas\scene\context.py”, line 140, in _get_sceneobject_cls
raise SceneObjectNotRegisteredError(“No scene object is registered for this data type: {} in this context: {}”.format(dtype, context_name))
SceneObjectNotRegisteredError: No scene object is registered for this data type: <class ‘compas_robots.model.robot.RobotModel’> in this context: Rhino

Cpython, installed via conda-forge

ImportError: Error importing numpy: you should not try to import numpy from its source directory; please exit the numpy source tree, and relaunch your python interpreter from there.

Any suggestion on how to approach this?
Or am I missing other official methods for visualizing a .urdf in Rhino8 ?

Thanks,
Marco

2

Hello Marco,

I can reproduce your problem.
I believe there is a bug in compas_robot, but first, I need to confirm with Gonzalo.

In the meantime, if you want to give it a try. go to the compas_robot installation folder, open the following file : src\compas_robots\rhino\scene\robotmodelobject.py In line 34, it should be
super(RobotModelObject, self).__init__(model=model, **kwargs)
change that to
super(RobotModelObject, self).__init__(item=model, **kwargs)

Then run the demo file in Rhino (Tools → PythonScript → Edit). This worked for me. The second execution method of running the file in cpython outside Rhino will not work if your intention is to visualize that in Rhino.

3

Hello,

that still produces the following error, from both RhinoScript editor and from Grasshopper Python editor:

Traceback (most recent call last):
File “file:///C:/Users/frist/Desktop/test.py”, line 16, in
File “C:\Users\frist.rhinocode\py39-rh8\lib\site-packages\compas\scene\scene.py”, line 115, in add
sceneobject = SceneObject(item=item, context=self.context, **kwargs) # type: ignore
File “C:\Users\frist.rhinocode\py39-rh8\lib\site-packages\compas\scene\sceneobject.py”, line 88, in new
sceneobject_cls = get_sceneobject_cls(item, **kwargs)
File “C:\Users\frist.rhinocode\py39-rh8\lib\site-packages\compas\scene\context.py”, line 152, in get_sceneobject_cls
cls = _get_sceneobject_cls(item, **kwargs)
File “C:\Users\frist.rhinocode\py39-rh8\lib\site-packages\compas\scene\context.py”, line 140, in _get_sceneobject_cls
raise SceneObjectNotRegisteredError(“No scene object is registered for this data type: {} in this context: {}”.format(dtype, context_name))
SceneObjectNotRegisteredError: No scene object is registered for this data type: <class ‘compas_robots.model.robot.RobotModel’> in this context: Rhino

Thanks,
Marco