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https://github.com/IfcOpenShell/IfcOpenShell.git
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Dion Moult
68 lines
2.3 KiB
Python
68 lines
2.3 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_group(
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file: ifcopenshell.file, products: list[ifcopenshell.entity_instance], group: ifcopenshell.entity_instance
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) -> None:
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"""Unassigns products from a group
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If the product isn't assigned to the group, nothing will happen.
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:param products: A list of IfcProduct elements to unassign from the group
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:type products: list[ifcopenshell.entity_instance]
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:param group: The IfcGroup to unassign from
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:type group: ifcopenshell.entity_instance
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:return: None
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:rtype: None
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Example:
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.. code:: python
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group = ifcopenshell.api.group.add_group(model, name="Furniture")
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furniture = model.by_type("IfcFurniture")
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ifcopenshell.api.group.assign_group(model, products=furniture, group=group)
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bad_furniture = furniture[0]
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ifcopenshell.api.group.unassign_group(model, products=[bad_furniture], group=group)
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"""
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settings = {
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"products": products,
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"group": group,
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}
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if not settings["group"].IsGroupedBy:
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return
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rel = settings["group"].IsGroupedBy[0]
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related_objects = set(rel.RelatedObjects) or set()
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products = set(settings["products"])
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related_objects -= products
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if related_objects:
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rel.RelatedObjects = list(related_objects)
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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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