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45 lines
2.0 KiB
Python
45 lines
2.0 KiB
Python
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# 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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class Usecase:
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def __init__(self, file, metric=None, reference_path=None):
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"""
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Adds a chain of references to a metric. The reference path is a string of the form "attribute.attribute.attribute"
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Used to reference a value of an attribute of an instance through a metric objective entity.
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"""
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self.file = file
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self.settings = {"metric": metric, "reference_path": reference_path}
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def execute(self):
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if self.settings["reference_path"]:
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attributes = self.settings["reference_path"].split(".")
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references_created = []
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for i in range(len(attributes)):
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if i == 0:
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reference = self.file.create_entity("IfcReference")
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reference.AttributeIdentifier = attributes[i]
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self.settings["metric"].ReferencePath = reference
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references_created.append(reference)
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else:
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reference = self.file.create_entity("IfcReference")
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reference.AttributeIdentifier = attributes[i]
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references_created[i-1].InnerReference = reference
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references_created.append(reference)
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return references_created
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