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https://github.com/IfcOpenShell/IfcOpenShell.git
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Dion Moult
77 lines
3.6 KiB
Python
77 lines
3.6 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.api
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import ifcopenshell.util.element
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def unassign_representation(file, **usecase_settings) -> None:
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usecase = Usecase()
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usecase.file = file
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usecase.settings = {"product": None, "representation": None}
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for key, value in usecase_settings.items():
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usecase.settings[key] = value
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return usecase.execute()
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class Usecase:
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def execute(self):
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if self.settings["product"].is_a("IfcProduct"):
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self.unassign_product_representation(self.settings["product"], self.settings["representation"])
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elif self.settings["product"].is_a("IfcTypeProduct"):
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self.unassign_type_representation()
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def unassign_product_representation(self, product, representation):
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representations = list(product.Representation.Representations or [])
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if representation not in representations:
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return
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representations.remove(representation)
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if not representations:
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self.file.remove(product.Representation)
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else:
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product.Representation.Representations = representations
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def unassign_type_representation(self):
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for representation_map in self.settings["product"].RepresentationMaps or []:
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if representation_map.MappedRepresentation == self.settings["representation"]:
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self.unassign_products_using_mapped_representation(representation_map)
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self.remove_representation_map_only(representation_map)
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break
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self.settings["product"].RepresentationMaps = self.settings["product"].RepresentationMaps or None
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def remove_representation_map_only(self, representation_map):
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representation_map.MappedRepresentation = self.file.createIfcShapeRepresentation()
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ifcopenshell.util.element.remove_deep2(self.file, representation_map)
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self.file.remove(representation_map)
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def unassign_products_using_mapped_representation(self, representation_map):
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mapped_representations = []
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just_representations = []
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for map_usage in representation_map.MapUsage or []:
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for inverse in self.file.get_inverse(map_usage):
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if not inverse.is_a("IfcShapeRepresentation"):
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continue
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for definition in inverse.OfProductRepresentation or []:
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for product in definition.ShapeOfProduct or []:
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mapped_representations.append({"product": product, "representation": inverse})
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just_representations.append(inverse)
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for item in mapped_representations:
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self.unassign_product_representation(item["product"], item["representation"])
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for representation in just_representations:
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ifcopenshell.api.run("geometry.remove_representation", self.file, **{"representation": representation})
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