79 lines
3.3 KiB
Python
79 lines
3.3 KiB
Python
# IfcOpenShell - IFC toolkit and geometry engine
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# Copyright (C) 2021-2022, Dion Moult <dion@thinkmoult.com>, Yassine Oualid <yassine@sigmadimensions.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.resource
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import ifcopenshell.util.element
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def remove_resource(file: ifcopenshell.file, resource: ifcopenshell.entity_instance) -> None:
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"""Removes a resource and all relationships
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Example:
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.. code:: python
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# Add our own crew
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crew = ifcopenshell.api.resource.add_resource(model, ifc_class="IfcCrewResource")
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# Fire our crew
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ifcopenshell.api.resource.remove_resource(model, resource=crew)
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"""
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settings = {"resource": resource}
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def remove_consider_history(root: ifcopenshell.entity_instance) -> None:
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history = root.OwnerHistory
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file.remove(root)
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if history:
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ifcopenshell.util.element.remove_deep2(file, history)
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# TODO: review deep purge
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for inverse in file.get_inverse(settings["resource"]):
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if inverse.is_a("IfcRelNests"):
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if inverse.RelatingObject == settings["resource"]:
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# Remove rel before iteration over objects
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# to simplify removal of nested resources and avoid crashes.
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related_objects = inverse.RelatedObjects
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remove_consider_history(inverse)
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for related_object in related_objects:
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ifcopenshell.api.resource.remove_resource(file, resource=related_object)
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elif inverse.RelatedObjects == (resource,):
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remove_consider_history(inverse)
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elif inverse.is_a("IfcRelAssignsToControl"):
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if len(inverse.RelatedObjects) == 1:
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remove_consider_history(inverse)
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else:
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related_objects = list(inverse.RelatedObjects)
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related_objects.remove(settings["resource"])
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inverse.RelatedObjects = related_objects
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elif inverse.is_a("IfcRelAssignsToResource"):
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if inverse.RelatingResource == settings["resource"]:
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for related_object in inverse.RelatedObjects:
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ifcopenshell.api.resource.unassign_resource(
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file, related_object=related_object, relating_resource=settings["resource"]
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)
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elif inverse.RelatedObjects == (resource,):
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remove_consider_history(inverse)
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# Usage was added in IFC4.
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if usage := getattr(settings["resource"], "Usage", None):
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file.remove(usage)
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if settings["resource"].BaseQuantity:
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ifcopenshell.api.resource.remove_resource_quantity(file, resource=settings["resource"])
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remove_consider_history(resource)
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