First Commit

2026-05-31 10:17:09 +07:00
commit 17a9c69379
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+# 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