How it works or should work

Assembly

• copy(): features / trimmed geometries are not copied!?

Part

• part.shape:
  base shape
  type: BrepGeometry or MeshGeometry (inherit from PartGeometry from Geometry)
• part.geometry:
  including applied features

---

TimberAssembly

• assembly.parts, assembly.beams

Beam

Joint

Features

General stuff from compas Part class [source]:

• types: MeshFeature, BrepFeature, ParametricFeature(?)
• know their feature shape and operation
• store a deepcopy of previous part geometry after applying
• hold reference to Part
• parts and joints hold list of references to features
• do not know where they come from (don't hold reference to e.g. joint)
• apply themselves
• do they know if already applied?

What part.add_geometry_feature() does:

• creates a feature instance
• adds it to part.features() list
• optionally calls feature.apply()

What feature.apply() does:

• performs feature operation
• stores new geometry of the part (transformed) in part._part_geometry

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 calls feature.apply()

TODO:

• prevent duplicates of features from the same joint
• a failed operation (e.g. trimming) throws an error --> warning / ignore instead?