44 lines
1.8 KiB
Python
44 lines
1.8 KiB
Python
# IfcOpenShell - IFC toolkit and geometry engine
|
|
# Copyright (C) 2021 Dion Moult <dion@thinkmoult.com>
|
|
#
|
|
# This file is part of IfcOpenShell.
|
|
#
|
|
# IfcOpenShell is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU Lesser General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# IfcOpenShell is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU Lesser General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Lesser General Public License
|
|
# along with IfcOpenShell. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
import ifcopenshell
|
|
|
|
|
|
def add_metric_reference(
|
|
file: ifcopenshell.file, metric: ifcopenshell.entity_instance, reference_path: str
|
|
) -> list[ifcopenshell.entity_instance]:
|
|
"""
|
|
Adds a chain of references to a metric. The reference path is a string of the form "attribute.attribute.attribute"
|
|
Used to reference a value of an attribute of an instance through a metric objective entity.
|
|
"""
|
|
references_created = []
|
|
if reference_path:
|
|
attributes = reference_path.split(".")
|
|
for i in range(len(attributes)):
|
|
if i == 0:
|
|
reference = file.create_entity("IfcReference")
|
|
reference.AttributeIdentifier = attributes[i]
|
|
metric.ReferencePath = reference
|
|
references_created.append(reference)
|
|
else:
|
|
reference = file.create_entity("IfcReference")
|
|
reference.AttributeIdentifier = attributes[i]
|
|
references_created[i - 1].InnerReference = reference
|
|
references_created.append(reference)
|
|
return references_created
|