Add api.structural.assign_product, assign_to_building, and api.geometry.add_topology_representation

assign_product creates IfcRelAssignsToProduct linking a structural member to a physical building element. assign_to_building creates IfcRelServicesBuildings linking a structural analysis model to a building. add_topology_representation creates IfcTopologyRepresentation for structural elements, inferring the representation type from the item class. Generated with the assistance of an AI coding tool.
2026-08-14 11:24:19 +00:00 · 2026-03-30 07:28:01 +01:00
parent be05d771a2
commit f46be80193
8 changed files with 432 additions and 0 deletions
@@ -0,0 +1,62 @@
+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2026 Dion Moult <dion@thinkmoult.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/>.
+# This file was generated with the assistance of an AI coding tool.
+
+import ifcopenshell.api.root
+import ifcopenshell.api.structural
+import test.bootstrap
+
+
+class TestAssignToBuilding(test.bootstrap.IFC4):
+    def test_creating_a_new_relationship(self):
+        model = ifcopenshell.api.structural.add_structural_analysis_model(self.file)
+        building = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcBuilding")
+        rel = ifcopenshell.api.structural.assign_to_building(
+            self.file, structural_analysis_model=model, building=building
+        )
+        assert rel.is_a("IfcRelServicesBuildings")
+        assert rel.RelatingSystem == model
+        assert building in rel.RelatedBuildings
+
+    def test_adding_a_second_building_to_an_existing_relationship(self):
+        model = ifcopenshell.api.structural.add_structural_analysis_model(self.file)
+        building1 = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcBuilding")
+        building2 = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcBuilding")
+        rel1 = ifcopenshell.api.structural.assign_to_building(
+            self.file, structural_analysis_model=model, building=building1
+        )
+        rel2 = ifcopenshell.api.structural.assign_to_building(
+            self.file, structural_analysis_model=model, building=building2
+        )
+        assert rel1 == rel2
+        assert len(self.file.by_type("IfcRelServicesBuildings")) == 1
+        assert building1 in rel1.RelatedBuildings
+        assert building2 in rel1.RelatedBuildings
+
+    def test_does_not_duplicate_an_existing_assignment(self):
+        model = ifcopenshell.api.structural.add_structural_analysis_model(self.file)
+        building = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcBuilding")
+        ifcopenshell.api.structural.assign_to_building(self.file, structural_analysis_model=model, building=building)
+        ifcopenshell.api.structural.assign_to_building(self.file, structural_analysis_model=model, building=building)
+        assert len(self.file.by_type("IfcRelServicesBuildings")) == 1
+        rels = self.file.by_type("IfcRelServicesBuildings")
+        assert len(rels[0].RelatedBuildings) == 1
+
+
+class TestAssignToBuildingIFC2X3(test.bootstrap.IFC2X3, TestAssignToBuilding):
+    pass