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2026-05-31 10:17:09 +07:00

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Python

# IfcOpenShell - IFC toolkit and geometry engine
# Copyright (C) 2025 Thomas Krijnen <thomas@aecgeeks.com>
#
# This file is part of IfcOpenShell.
#
# IfcOpenShell is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# IfcOpenShell is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with IfcOpenShell. If not, see <http://www.gnu.org/licenses/>.
from collections.abc import Sequence
from ifcopenshell import entity_instance
def get_child_alignments(alignment: entity_instance) -> Sequence[entity_instance]:
"""
Returns the aggregated child alignments to this alignment per CT 4.1.4.4.1.2 Alignment Layout - Reusing Horizontal Layout
Example:
.. code:: python
alignment = model.by_type("IfcAlignment")[0]
children = ifcopenshell.api.alignment.get_child_alignments(alignment)
"""
children = []
for rel in alignment.IsDecomposedBy:
for child in rel.RelatedObjects:
if child.is_a("IfcAlignment"):
children.append(child)
return children