60 lines
2.1 KiB
Python
60 lines
2.1 KiB
Python
# 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_group(
|
|
file: ifcopenshell.file, products: list[ifcopenshell.entity_instance], group: ifcopenshell.entity_instance
|
|
) -> None:
|
|
"""Unassigns products from a group
|
|
|
|
If the product isn't assigned to the group, nothing will happen.
|
|
|
|
:param products: A list of IfcProduct elements to unassign from the group
|
|
:param group: The IfcGroup to unassign from
|
|
:return: None
|
|
|
|
Example:
|
|
|
|
.. code:: python
|
|
|
|
group = ifcopenshell.api.group.add_group(model, name="Furniture")
|
|
furniture = model.by_type("IfcFurniture")
|
|
ifcopenshell.api.group.assign_group(model, products=furniture, group=group)
|
|
|
|
bad_furniture = furniture[0]
|
|
ifcopenshell.api.group.unassign_group(model, products=[bad_furniture], group=group)
|
|
"""
|
|
if not group.IsGroupedBy:
|
|
return
|
|
rel = group.IsGroupedBy[0]
|
|
related_objects = set(rel.RelatedObjects) or set()
|
|
products_set = set(products)
|
|
related_objects -= products_set
|
|
if related_objects:
|
|
rel.RelatedObjects = list(related_objects)
|
|
ifcopenshell.api.owner.update_owner_history(file, element=rel)
|
|
else:
|
|
history = rel.OwnerHistory
|
|
file.remove(rel)
|
|
if history:
|
|
ifcopenshell.util.element.remove_deep2(file, history)
|