Replace N sequential duplicate_ifc_objects([parent]) calls in
_regenerate_array_body with one duplicate_ifc_object_n_times call
per layer, batching the fixed per-call overhead (snapshot gather,
UI refresh, decorator reload).
Guard batch_host_recut drain against dead StructRNA refs and prune
orphan array-child GUIDs at regen so outliner-delete of a
Bonsai-managed child cannot crash subsequent regenerate_array.
Recalculate walls after recreate_connections so Shift+D of
connected walls produces correct junction geometry without a
manual regen step.
Relates to #8088.
Generated with the assistance of an AI coding tool.
Refs gh#8088. Array regen + multi-opening drops fan out N+1 wall recuts
per operator (one per child filling deletion + the final mirror recut),
making CSG opening-subtraction O(N^2) for a linear UX action.
Introduces tool.Geometry.batch_host_recut() — a context manager that
coalesces switch_representation and bpy.ops.bim.update_representation
calls per voided element within one operator transaction. The drain
re-reads the active representation so the recut reflects current IFC.
Wraps 7 entry points (regenerate_array, RegenerateArray, RemoveArray,
AddOpening, RecalculateFill, CloneOpening, regenerate_from_type) and
rewires 7 leaf call sites in opening.py, void/operator.py, and
mirror_parent_void_fillings_to_children.
An AST forward-compat guard pins the rewire contract: no direct
switch_representation or bpy.ops.bim.update_representation in the
three target files outside the helper definitions.
A 16-child array regen now recuts the wall once instead of 17 times.
The CSG cost per recut is unchanged; only the count is reduced.
21 new tests across three lanes (helper unit, entry-point coalescing,
AST guard) — all green.
Generated with the assistance of an AI coding tool.
Gorgious56