Workbench launch failure

[Mx74]

I was wondering how was running the install process since you integrated freecad-glider with OpenGlider.

Everything ran smooth without warning, the workbench icon appears in Freecad, but when trying to launch it:

('invalid syntax', ('/home/max/OpenGlider/openglider/mesh/poly_tri.py', 401, 22, ' return [[*edge] for edge in zip(_tri[:-1], _tri[1:])]\n')) Traceback (most recent call last): File "/home/max/OpenGlider/freecad/freecad_glider/init_gui.py", line 101, in Initialize from . import tools File "/home/max/OpenGlider/freecad/freecad_glider/tools/__init__.py", line 15, in <module> from . import _glider as glider File "/home/max/OpenGlider/freecad/freecad_glider/tools/_glider.py", line 8, in <module> from openglider import mesh File "/home/max/OpenGlider/openglider/mesh/__init__.py", line 1, in <module> from openglider.mesh.mesh import Mesh, Vertex, Polygon File "/home/max/OpenGlider/openglider/mesh/mesh.py", line 12, in <module> from .poly_tri import PolyTri

[lorenz]

can you try import PolyTri from python:
from openglider.mesh.poly_tri import PolyTri

[Mx74]

!!!!NOT ABLE TO IMPORT MESHPY, MESH-CREATION WILL BE SLOW
No module named meshpy.triangle
Traceback (most recent call last):
File "", line 1, in
File "/home/max/OpenGlider/openglider/mesh/init.py", line 1, in
from openglider.mesh.mesh import Mesh, Vertex, Polygon
File "/home/max/OpenGlider/openglider/mesh/mesh.py", line 12, in
from .poly_tri import PolyTri
File "/home/max/OpenGlider/openglider/mesh/poly_tri.py", line 401
return [[*edge] for edge in zip(_tri[:-1], _tri[1:])]
^
SyntaxError: invalid syntax

[lorenz]

poly_tri didn't work with python2. This should be fixed: 9614ff8

But the problem is meshpy: It seems like you have removed the meshpy package.

[Mx74]

I haven't removed anything as I tried on a new virtual machine with a fresh install to see if the install process was less painful. It's just not installed. I'll try to fix this

[lorenz]

I see. Btw. we are using conda with virtual environments which allows to have multiple environments side by side...
further information: https://github.com/FreeCAD/FreeCAD_Conda

[Mx74]

Ok.

I see that there is a conda recipe for Openglider.

I tried conda install -c openglider openglider , install run fine, but then how do you get the workbench active in Freecad?

[lorenz]

for conda you have to use freecad from conda-forge:

conda create -n freecad freecad openglider meshpy -c conda-forge -c openglider
this creates an environment with all the needed tools. Note that this environment is quite huge.

once everything installed you can activate the environment with:
source activate freecad

and launch freecad:
FreeCAD

if you want the latest development-state of openglider use pip in the environment:
pip install https://github.com/booya-at/OpenGlider/archive/master.tar.gz

[Mx74]

Hello,

Ok, it works with conda, the install process is indeed much easier :-)

There is just the file glider2d.json missing in the package at:
/miniconda3/envs/freecad/lib/python3.6/site-packages/freecad/freecad_glider/

[lorenz]

thanks for reporting. It is already fixed in the development-branch.

[Mx74]

For the install of the dev branch, I tried with pip, it failed with mistake. Sorry, I didn't note which one.
Then I cloned it with git, and installed the usual way. There were cython, lxml and gmsh_interop dependencies missing.
Once installed, it seems it works.

Thank you for your help !

[lorenz]

We do not depent on gmsh_interop, cython ... directly. I guess these libs are installed because of mixing conda-package and pip. I normally install dev-openglider with pip in a conda-env without any deps:
pip install -e . --no-deps