The Plane class in the tools plugin was introduced as a drawing aid. Many modeling techniques make use of planes (cutByPLane, distanceFromPlane,...). These are currently represented by a pair
(Point,Normal). There might be benefits of creating a dedicated class for this. We should be careful though about which transformations we allow and what class we derive it from. And we should then probably als include other simple (analytical) geometric objects: Lines, Cylinders, ... I think we should create a separate module for these, perhaps also including the CoordSystem and BoundVectors, which I would like to remove from coords.py.

I suggest that, if there is enough interest of the community for such dedicated classes in pyFormex, we start a task tracker for discussing (I have a lot of questions!) and planning it.