I think that if not explained a norma user could not guess that:Roy_043 wrote: ↑Mon Nov 14, 2022 9:17 am The Orientation of a face is either "Forward" or "Reversed". If the Orientation is "Forward" the normals of the face and the normals of its Surface point in the same direction, else the normals point in opposite directions. It is very common to have a face with a "Reversed" orientation, every extrude will have one, it has no relevance for determining if the face is flipped.
A "Face" is "limited portion of a Surface", and you have to explain maybe even the different something.
There are some concepts explained here:
https://wiki.freecadweb.org/OpenCASCADE/en
And
https://wiki.freecadweb.org/Topological ... ripting/en
But IMHO such matter should be "explained and made visible" to newbies, as it is very difficult to explain things without having this "basic knowledge" that is the foundation on "FreeCAD inner working".
When I try to explain this things to newbies, I have only these forum posts to link:
Topology Geometry and so on by @Chris_G:
https://forum.freecadweb.org/viewtopic. ... 93#p500989
https://forum.freecadweb.org/viewtopic. ... 12#p345612
https://forum.freecadweb.org/viewtopic. ... 59#p501859
Topology and Geometry Primer
https://forum.freecadweb.org/viewtopic. ... 89#p500989
Consideration about 2D to 3D objects
https://forum.freecadweb.org/viewtopic. ... 11#p463511
This is not related, but maybe interesting.
Outside and Inside for Offset of "open wires"
https://forum.freecadweb.org/viewtopic. ... 69#p628069
Maybe with some revisions and coaching I could make something that resemble an explanation, but some "revision" should be necessary maybe involving @wmayer or other people with some "deep knowledge" to avoid "writing insanities".
What do you think?
Regards
Carlo D.