HarryGeier wrote: ↑

Fri May 24, 2019 7:59 am

Who maintains MESH Workbench ?

Werner himself maintains and extends it

This sound like a version mismatch between your system python and FreeCAD python. An ABI interface change would lead to such errors. In your FreeCAD info we see it uses 3.6.7, could you check what your system version is? If they do not match it is basically impossible to use freecad as library in a ...

OpenGL cannot do arcs or any curved geometry. It ist all triangles and Line Segments. So that is basically what you need to go for and approximate a circle to line segments. The coin spline classes do the same, and I don't think it would be useful to approximate a circle with a spline to be approxim...

tomatix7 wrote: ↑

Wed May 15, 2019 4:05 pm

I tried to do it with materials, but I couldn't figure out how this works. I can create a scripted object, but I don't manage to create a part object with refractive index property.

What is wrong with the provided example? it creates a Part object with custom properties.

Kurt has a package on the daily PPA that I think fixes this https://launchpad.net/~freecad-maintainers/+archive/ubuntu/freecad-daily I would suggest to pull all the dependencies from there. I think this all works now, but its only 1 day old. Thanks, that worked perfectly! I was able to expose the v...

But we do have Material module... And refractive index is a material property. There should be a way to use material module for the purpose; if there isn't, we shold look into how to improve it.

Thats a good idee! Maybe bernd knows how to use it, he worked heavily on it

bernd wrote: Ping

You need to create a scripted object: class Lens: def __init__(self, obj): obj.addProperty("App::PropertyFloat", "Refractive index", "Lens Workbench").Refractive_index = 1.0 obj.Proxy = self FreeCAD.newDocument() a=FreeCAD.ActiveDocument.addObject("Part::FeaturePython","MyLens") Lens(a) https://www....

I'm on ubuntu 18.10 (windows test are done on my employers windows machine). WIth python3 and QT5 there is a error that pyside2 does not install the correct shiboken cmake files... I will try your script, maybe I missed something

As a base one would need to access the VTK pipeline data to have something to make a filter with. This raises an exception for me on windows conda builds ... Yes because the "getPythonObject" method of the property was never implemented. I looked up some code and it seems to be easy to do, but as s...

I think you are rigth, sgrogan, there are quite some potential issues. VTK build with wrong python/qt/occ versions could all mess up the import. So the whole idea may be to brittle to be usefull for FreeCAD. I tried to do some testing on kubuntu 18.10 but already failed at building FreeCAD with pyth...