mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-09 09:21:46 +00:00
Andrej730
70 lines
3.1 KiB
Python
70 lines
3.1 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
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import ifcopenshell.util.element
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class Usecase:
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def __init__(self, file: ifcopenshell.file, related_objects: list[ifcopenshell.entity_instance]):
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"""Unassigns related_objects from their nests.
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An object (the whole within a decomposition) is Nested by zero or one more smaller objects.
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This function will remove this nesting relationship.
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If the object is not part of a nesting relationship, nothing will happen.
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:param related_objects: The list of children of the nesting relationship,
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typically IfcElements.
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:type related_objects: list[ifcopenshell.entity_instance.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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task = ifcopenshell.api.run("root.create_entity", model, ifc_class="IfcTasks")
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subtask1 = ifcopenshell.api.run("root.create_entity", model, ifc_class="IfcTask")
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subtask2 = ifcopenshell.api.run("root.create_entity", model, ifc_class="IfcTask")
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ifcopenshell.api.run("nest.assign_object", model, related_objects=[subtask1], relating_object=task)
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ifcopenshell.api.run("nest.assign_object", model, related_objects=[subtask2], relating_object=task)
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# nothing is returned
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rel = ifcopenshell.api.run("nest.unassign_object", model, related_objects=[subtask1])
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# nothing is returned, relationship is removed
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ifcopenshell.api.run("nest.unassign_object", model, related_objects=[subtask2])
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"""
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self.file = file
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self.settings = {"related_objects": related_objects}
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def execute(self) -> None:
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related_objects = set(self.settings["related_objects"])
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rels = set(rel for object in related_objects if (rel := next((rel for rel in object.Nests), None)))
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for rel in rels:
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related_objects = set(rel.RelatedObjects) - related_objects
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if related_objects:
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rel.RelatedObjects = list(related_objects)
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ifcopenshell.api.run("owner.update_owner_history", self.file, **{"element": rel})
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else:
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history = rel.OwnerHistory
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self.file.remove(rel)
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if history:
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ifcopenshell.util.element.remove_deep2(self.file, history)
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