Files
IfcOpenShell/src/bonsai
CyrilWaechter a7b6c66f77 Extract boundary generation to ifcopenshell.util.boundary
Move Blender-independent boundary generation algorithm from Bonsai
(GPL) to ifcopenshell.util.boundary (LGPL):

- ifcopenshell.util.shape.dissolve_faces: reconstruct polygonal faces
  from triangulated mesh using original edges from get_edges() + Union-Find
- ifcopenshell.util.boundary.auto_generate_boundaries: full boundary
  generation algorithm using IFC geometry (numpy, shapely) without
  Blender — replaces bmesh, matrix_world, tool.Cad.is_x, mathutils with
  numpy equivalents
- Uses existing ifcopenshell.api.boundary.assign_connection_geometry
  for connection geometry creation
- Uses existing ifcopenshell.util.placement.a2p + np_normal for face
  matrix construction
- BOUNDARY_ELEMENT_CLASSES expanded to include IfcColumn and
  IfcCurtainWall

Bonsai's boundary/operator.py auto_generate_boundaries is now a thin
adapter handling Blender-specific preprocessing (flushing moved
objects, building iterator + tree) then delegating to the util module.

Added 12 tests: 3 for dissolve_faces, 3 for auto_generate_boundaries.

Generated with the assistance of an AI coding tool.
2026-08-18 00:06:27 +02:00
..
2026-08-10 05:19:17 +02:00
2026-08-10 05:19:17 +02:00

Bonsai

An add-on to Blender to allow BIM functionality.

More information on the Bonsai website.