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https://github.com/IfcOpenShell/IfcOpenShell.git
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Dion Moult
71 lines
2.9 KiB
Python
71 lines
2.9 KiB
Python
# IfcOpenShell - IFC toolkit and geometry engine
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# Copyright (C) 2022 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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class Usecase:
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def __init__(self, file, product=None):
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"""Unassigns a container from a product.
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:param product: The IfcProduct to remove the containment from.
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:type product: 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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project = ifcopenshell.api.run("root.create_entity", model, ifc_class="IfcProject")
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site = ifcopenshell.api.run("root.create_entity", model, ifc_class="IfcSite")
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building = ifcopenshell.api.run("root.create_entity", model, ifc_class="IfcBuilding")
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storey = ifcopenshell.api.run("root.create_entity", model, ifc_class="IfcBuildingStorey")
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# The project contains a site (note that project aggregation is a special case in IFC)
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ifcopenshell.api.run("aggregate.assign_object", model, product=site, relating_object=project)
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# The site has a building, the building has a storey, and the storey has a space
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ifcopenshell.api.run("aggregate.assign_object", model, product=building, relating_object=site)
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ifcopenshell.api.run("aggregate.assign_object", model, product=storey, relating_object=building)
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# Create a wall
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wall = ifcopenshell.api.run("root.create_entity", model, ifc_class="IfcWall")
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# The wall is in the storey
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ifcopenshell.api.run("spatial.assign_container", model, product=wall, relating_structure=storey)
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# Not anymore!
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ifcopenshell.api.run("spatial.unassign_container", model, product=wall)
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"""
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self.file = file
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self.settings = {
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"product": product,
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}
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def execute(self):
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for rel in self.settings["product"].ContainedInStructure or []:
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related_elements = list(rel.RelatedElements)
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related_elements.remove(self.settings["product"])
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if related_elements:
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rel.RelatedElements = related_elements
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ifcopenshell.api.run("owner.update_owner_history", self.file, element=rel)
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else:
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self.file.remove(rel)
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