66 lines
2.5 KiB
Python
66 lines
2.5 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_control(
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file: ifcopenshell.file,
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relating_control: ifcopenshell.entity_instance,
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related_objects: list[ifcopenshell.entity_instance],
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) -> None:
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"""Unassigns a planning control or constraint to an object
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:param relating_control: The IfcControl entity that is creating the
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control or constraint
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:param related_objects: The list IfcObjectDefinitions that is being controlled
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:return: None
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Example:
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.. code:: python
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# Let's relate a cost item and a product
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wall = ifcopenshell.api.root.create_entity(model, ifc_class="IfcWall")
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schedule = ifcopenshell.api.cost.add_cost_schedule(model)
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cost_item = ifcopenshell.api.cost.add_cost_item(model,
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cost_schedule=schedule)
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ifcopenshell.api.control.assign_control(model,
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relating_control=cost_item, related_objects=[wall])
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# And now let's change our mind
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ifcopenshell.api.control.unassign_control(model,
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relating_control=cost_item, related_objects=[wall])
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"""
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related_objects_set = set(related_objects)
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control_assignments = set(relating_control.Controls)
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rels = set(rel for obj in related_objects_set for rel in obj.HasAssignments if rel in control_assignments)
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for rel in rels:
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related_objects_new = set(rel.RelatedObjects) - related_objects_set
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if related_objects_new:
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rel.RelatedObjects = list(related_objects_new)
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ifcopenshell.api.owner.update_owner_history(file, element=rel)
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else:
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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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