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IfcOpenShell/src/ifcopenshell-python/ifcopenshell/api/alignment/remove_last_segment.py
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2025-03-14 07:31:50 -07:00
# IfcOpenShell - IFC toolkit and geometry engine
# Copyright (C) 2025 Thomas Krijnen <thomas@aecgeeks.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
import ifcopenshell.api.alignment
import ifcopenshell.api.nest
import ifcopenshell.geom
import ifcopenshell.ifcopenshell_wrapper as ifcopenshell_wrapper
import numpy as np
from ifcopenshell import entity_instance
import ifcopenshell.util
import ifcopenshell.util.element
def remove_last_segment(file: ifcopenshell.file, entity: entity_instance) -> entity_instance:
"""
Removes the last segment from the end of entity.
:param entity: An IfcAlignmentHorizontal, IfcAlignmentVertical, IfcAlignmentCant or IfcCompositeCurve
:return: The segment
"""
expected_types = [
"IfcAlignmentHorizontal",
"IfcAlignmentVertical",
"IfcAlignmentCant",
"IfcCompositeCurve",
"IfcGradientCurve",
"IfcSegmentedReferenceCurve",
]
if not entity.is_a() in expected_types:
raise TypeError(
f"Expected entity type to be one of {[_ for _ in expected_types]}, instead received '{entity.is_a()}"
)
if entity.is_a("IfcCompositeCurve"):
last_segment = entity.Segments[-1]
entity.Segments = tuple(set(entity.Segments) - {last_segment})
entity.Segments[-1].Transition = "DISCONTINUOUS"
return last_segment
else:
components = ifcopenshell.util.element.get_components(entity)
last_segment = components[-1]
ifcopenshell.api.nest.unassign_object(file, (last_segment,))
return last_segment