mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-13 10:57:49 +00:00
Richard Brice
49 lines
2.0 KiB
Python
49 lines
2.0 KiB
Python
# IfcOpenShell - IFC toolkit and geometry engine
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# Copyright (C) 2025 Thomas Krijnen <thomas@aecgeeks.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.alignment
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import ifcopenshell.util.element
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from ifcopenshell import entity_instance
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def get_alignment_start_station(file: ifcopenshell.file, alignment: entity_instance) -> float:
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"""
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Returns the start station of the alignment. The starting station is defined by the first nested IfcReferent.
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This is interpreted to mean the first IfcReferent with an occurance of Pset_Stationing.Station,
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otherwise returns 0.0.
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"""
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if not alignment.is_a("IfcAlignment"):
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raise TypeError(f"Expected entity type to be IfcAlignment, instead received {alignment.is_a()}")
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start_station = 0.0
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parent_alignment = ifcopenshell.api.alignment.get_parent_alignment(alignment)
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if parent_alignment:
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start_station = ifcopenshell.api.alignment.get_alignment_start_station(file, parent_alignment)
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else:
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components = ifcopenshell.util.element.get_components(alignment)
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for c in components:
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if c.is_a("IfcReferent"):
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start_station = ifcopenshell.util.element.get_pset(c, name="Pset_Stationing", prop="Station")
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if not start_station == None:
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break
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return start_station
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