68 lines
2.7 KiB
Python
68 lines
2.7 KiB
Python
# IfcOpenShell - IFC toolkit and geometry engine
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# Copyright (C) 2021 Dion Moult <dion@thinkmoult.com>
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#
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# This file is part of IfcOpenShell.
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#
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# IfcOpenShell is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# IfcOpenShell is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with IfcOpenShell. If not, see <http://www.gnu.org/licenses/>.
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import ifcopenshell
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import ifcopenshell.api.owner
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import ifcopenshell.util.element
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def unassign_actor(
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file: ifcopenshell.file, relating_actor: ifcopenshell.entity_instance, related_object: ifcopenshell.entity_instance
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) -> None:
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"""Unassigns an actor to an object
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This means that the actor is no longer responsible for the object.
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:param relating_actor: The IfcActor who is responsible for the object.
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:param related_object: The object the actor is responsible for.
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:return: None
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Example:
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.. code:: python
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# We need to procure and install 2 of this particular pump type in our facility.
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pump_type = ifcopenshell.api.root.create_entity(model, ifc_class="IfcPumpType")
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# Define who the manufacturer is
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manufacturer = ifcopenshell.api.owner.add_organisation(model,
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identification="PWP", name="Pumps With Power")
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ifcopenshell.api.owner.add_role(model, assigned_object=manufacturer, role="MANUFACTURER")
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# Make the manufacturer responsible for that pump type.
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ifcopenshell.api.owner.assign_actor(model,
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relating_actor=manufacturer, related_object=pump_type)
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# Undo the assignment
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ifcopenshell.api.owner.unassign_actor(model,
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relating_actor=manufacturer, related_object=pump_type)
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"""
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for rel in related_object.HasAssignments or []:
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if not rel.is_a("IfcRelAssignsToActor") or rel.RelatingActor != relating_actor:
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continue
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if len(rel.RelatedObjects) == 1:
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history = rel.OwnerHistory
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file.remove(rel)
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if history:
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ifcopenshell.util.element.remove_deep2(file, history)
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return
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related_objects = list(rel.RelatedObjects)
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related_objects.remove(related_object)
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rel.RelatedObjects = related_objects
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ifcopenshell.api.owner.update_owner_history(file, element=rel)
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