68 lines
2.8 KiB
Python
68 lines
2.8 KiB
Python
# IfcOpenShell - IFC toolkit and geometry engine
|
|
# Copyright (C) 2022 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_container(file: ifcopenshell.file, products: list[ifcopenshell.entity_instance]) -> None:
|
|
"""Unassigns a container from products.
|
|
|
|
:param product: A list of IfcProducts to remove the containment from.
|
|
:return: None
|
|
|
|
Example:
|
|
|
|
.. code:: python
|
|
|
|
project = ifcopenshell.api.root.create_entity(model, ifc_class="IfcProject")
|
|
site = ifcopenshell.api.root.create_entity(model, ifc_class="IfcSite")
|
|
building = ifcopenshell.api.root.create_entity(model, ifc_class="IfcBuilding")
|
|
storey = ifcopenshell.api.root.create_entity(model, ifc_class="IfcBuildingStorey")
|
|
|
|
# The project contains a site (note that project aggregation is a special case in IFC)
|
|
ifcopenshell.api.aggregate.assign_object(model, products=[site], relating_object=project)
|
|
|
|
# The site has a building, the building has a storey, and the storey has a space
|
|
ifcopenshell.api.aggregate.assign_object(model, products=[building], relating_object=site)
|
|
ifcopenshell.api.aggregate.assign_object(model, products=[storey], relating_object=building)
|
|
|
|
# Create a wall
|
|
wall = ifcopenshell.api.root.create_entity(model, ifc_class="IfcWall")
|
|
|
|
# The wall is in the storey
|
|
ifcopenshell.api.spatial.assign_container(model, products=[wall], relating_structure=storey)
|
|
|
|
# Not anymore!
|
|
ifcopenshell.api.spatial.unassign_container(model, products=[wall])
|
|
"""
|
|
products_set = set(products)
|
|
rels = set(rel for product in products_set if (rel := next(iter(product.ContainedInStructure), None)))
|
|
|
|
for rel in rels:
|
|
related_elements = set(rel.RelatedElements) - products_set
|
|
if related_elements:
|
|
rel.RelatedElements = list(related_elements)
|
|
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)
|