First Commit

2026-05-31 10:17:09 +07:00
commit 17a9c69379
4547 changed files with 1170384 additions and 0 deletions
@@ -0,0 +1,67 @@
+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2021 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/>.
+
+import ifcopenshell
+import ifcopenshell.api.owner
+import ifcopenshell.util.element
+
+
+def unassign_actor(
+    file: ifcopenshell.file, relating_actor: ifcopenshell.entity_instance, related_object: ifcopenshell.entity_instance
+) -> None:
+    """Unassigns an actor to an object
+
+    This means that the actor is no longer responsible for the object.
+
+    :param relating_actor: The IfcActor who is responsible for the object.
+    :param related_object: The object the actor is responsible for.
+    :return: None
+
+    Example:
+
+    .. code:: python
+
+        # We need to procure and install 2 of this particular pump type in our facility.
+        pump_type = ifcopenshell.api.root.create_entity(model, ifc_class="IfcPumpType")
+
+        # Define who the manufacturer is
+        manufacturer = ifcopenshell.api.owner.add_organisation(model,
+            identification="PWP", name="Pumps With Power")
+        ifcopenshell.api.owner.add_role(model, assigned_object=manufacturer, role="MANUFACTURER")
+
+        # Make the manufacturer responsible for that pump type.
+        ifcopenshell.api.owner.assign_actor(model,
+            relating_actor=manufacturer, related_object=pump_type)
+
+        # Undo the assignment
+        ifcopenshell.api.owner.unassign_actor(model,
+            relating_actor=manufacturer, related_object=pump_type)
+    """
+    for rel in related_object.HasAssignments or []:
+        if not rel.is_a("IfcRelAssignsToActor") or rel.RelatingActor != relating_actor:
+            continue
+        if len(rel.RelatedObjects) == 1:
+            history = rel.OwnerHistory
+            file.remove(rel)
+            if history:
+                ifcopenshell.util.element.remove_deep2(file, history)
+            return
+        related_objects = list(rel.RelatedObjects)
+        related_objects.remove(related_object)
+        rel.RelatedObjects = related_objects
+        ifcopenshell.api.owner.update_owner_history(file, element=rel)