How it works or should work

Features

• types: MeshFeature, BrepFeature, ParametricFeature(?)
• know their feature geometry and operation
• hold reference to Part
• store a deepcopy of previous part geometry
• apply themselves (feature.apply()), i.e. perform the requested operation.
• do not know where they come from
• do they know if already applied?

from joints

Each joint type has specific features to apply to the parts, beams etc. For example: trim with a plane, extend length on one side, boolean subtract a notch geometry.

What joint.add_features() does:

• using part.add_feature :
  • creates joint-specific features
  • adds them to part.features() list
• adds them to joint.features() list
• optionally triggers apply

TODO:

• prevent duplicates of features from the same joint