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Updates update_key_point_referents to confirm to CT 4.1.4.4.3

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Richard Brice
2026-08-05 07:26:27 -07:00
parent 6f3acc84ee
commit 048242783e
2 changed files with 50 additions and 30 deletions
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src/ifcopenshell-python/ifcopenshell/api/alignment/update_key_point_referents.py
+18 -24
View File
@@ -32,21 +32,6 @@ from ifcopenshell.api.alignment._sort_nest import _sort_nest
from ifcopenshell.api.alignment.update_fallback_position import update_fallback_position
def _get_key_point_referent_nest(layout: entity_instance) -> Optional[entity_instance]:
"""
Searches layout.IsNestedBy for the IfcRelNests whose RelatedObjects are IfcReferent.
This is distinct from both get_stationing_nest (scoped to the parent IfcAlignment, and
specifically the STATION/station-equation nest) and get_alignment_segment_nest (the *segment*
nest that also lives on layout.IsNestedBy, holding IfcAlignmentSegment, never IfcReferent).
"""
for nest in layout.IsNestedBy:
for related_object in nest.RelatedObjects:
if related_object.is_a("IfcReferent"):
return nest
return None
def _remove_referent(file: ifcopenshell.file, referent: entity_instance) -> None:
"""Cleanly deletes a key-point IfcReferent: its Pset_Stationing, its ObjectPlacement (if
exclusively owned by it), and finally the referent itself."""
@@ -129,9 +114,11 @@ def update_key_point_referents(
get_stationing_nest) -- key-point referents never belong in either of those.
:param layout: IfcAlignmentHorizontal, IfcAlignmentVertical, or IfcAlignmentCant
:param rel_nests: an existing IfcRelNests to (re)populate. May live anywhere (e.g. the parent
IfcAlignment, the layout, or elsewhere) -- the caller decides. If omitted, an existing
referent-nest already on `layout` is reused, or a new one is created and related to `layout`.
:param rel_nests: an existing IfcRelNests to (re)populate; its RelatingObject must be the
IfcAlignment that nests `layout` (TypeError is raised otherwise). If omitted, a new
IfcRelNests is always created and related to that IfcAlignment -- there is no implicit
search for or reuse of a previously created nest. Callers who want to regenerate into an
existing nest must pass it back in explicitly via `rel_nests`.
:param clear: if True, deletes all IfcReferent currently in rel_nests.RelatedObjects (and their
Pset_Stationing) before regenerating. If False (default), new referents are appended to
whatever already exists -- no deduplication.
@@ -167,12 +154,20 @@ def update_key_point_referents(
f"Expected entity type to be one of {[_ for _ in expected_types]}, instead received {layout.is_a()}"
)
if rel_nests is None:
rel_nests = _get_key_point_referent_nest(layout)
if rel_nests is None:
rel_nests = file.createIfcRelNests(
GlobalId=ifcopenshell.guid.new(), RelatingObject=layout, RelatedObjects=()
alignment = ifcopenshell.api.alignment.get_alignment(layout)
if alignment is None:
raise ValueError(f"{layout.is_a()} #{layout.id()} is not nested under an IfcAlignment.")
if rel_nests is not None:
if not rel_nests.RelatingObject.is_a("IfcAlignment"):
raise TypeError(
f"Expected rel_nests.RelatingObject to be IfcAlignment, instead received "
f"{rel_nests.RelatingObject.is_a()}"
)
else:
rel_nests = file.createIfcRelNests(
GlobalId=ifcopenshell.guid.new(), RelatingObject=alignment, RelatedObjects=()
)
if clear:
for referent in list(rel_nests.RelatedObjects):
@@ -189,7 +184,6 @@ def update_key_point_referents(
)
return rel_nests
alignment = ifcopenshell.api.alignment.get_alignment(layout)
start_station = ifcopenshell.api.alignment.get_alignment_start_station(file, alignment)
curve = ifcopenshell.api.alignment.get_layout_curve(layout)
is_horizontal = layout.is_a("IfcAlignmentHorizontal")