82 lines
3.3 KiB
Python
82 lines
3.3 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.util.element
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def remove_pset(
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file: ifcopenshell.file, product: ifcopenshell.entity_instance, pset: ifcopenshell.entity_instance
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) -> None:
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"""Removes a property set from a product
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All properties that are part of this property set are also removed.
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:param product: The IfcObject to remove the property set from.
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:param pset: The IfcPropertySet or IfcElementQuantity to remove.
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:return: None
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Example:
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.. code:: python
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# Let's imagine we have a new wall type with a property set.
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wall_type = ifcopenshell.api.root.create_entity(model, ifc_class="IfcWallType")
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pset = ifcopenshell.api.pset.add_pset(model, product=wall_type, name="Pset_WallCommon")
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# Remove it!
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ifcopenshell.api.pset.remove_pset(model, product=wall_type, pset=pset)
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"""
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to_purge = []
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should_remove_pset = True
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for inverse in file.get_inverse(pset):
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if inverse.is_a("IfcRelDefinesByProperties"):
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if not inverse.RelatedObjects or len(inverse.RelatedObjects) == 1:
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to_purge.append(inverse)
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else:
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related_objects = list(inverse.RelatedObjects)
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related_objects.remove(product)
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inverse.RelatedObjects = related_objects
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should_remove_pset = False
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if should_remove_pset:
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properties = [] # Predefined psets have no properties
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if pset.is_a("IfcPropertySet"):
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properties = pset.HasProperties or []
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elif pset.is_a("IfcQuantitySet"):
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properties = pset.Quantities or []
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elif pset.is_a() in ("IfcMaterialProperties", "IfcProfileProperties"):
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properties = pset.Properties or []
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for prop in properties:
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if file.get_total_inverses(prop) != 1:
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continue
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if prop.is_a("IfcPropertyEnumeratedValue"):
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enumeration = prop.EnumerationReference
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if enumeration and file.get_total_inverses(enumeration) == 1:
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file.remove(enumeration)
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file.remove(prop)
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# IfcMaterialProperties and IfcProfileProperties don't have OwnerHistory
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history = getattr(pset, "OwnerHistory", None)
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file.remove(pset)
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if history:
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ifcopenshell.util.element.remove_deep2(file, history)
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for element in to_purge:
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history = getattr(element, "OwnerHistory", None)
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file.remove(element)
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if history:
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ifcopenshell.util.element.remove_deep2(file, history)
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