mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
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Andrej730
57 lines
2.4 KiB
Python
57 lines
2.4 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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from collections.abc import Sequence
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import ifcopenshell
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import ifcopenshell.api.alignment
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from ifcopenshell import entity_instance
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def create_by_pi_method(
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file: ifcopenshell.file,
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name: str,
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hpoints: Sequence[Sequence[float]],
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radii: Sequence[float],
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vpoints: Sequence[Sequence[float]] = None,
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lengths: Sequence[float] = None,
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start_station: float = 0.0,
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) -> entity_instance:
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"""
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Create an alignment using the PI layout method for both horizontal and vertical alignments.
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If vpoints and lengths are omitted, only a horizontal alignment is created.
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:param name: value for Name attribute
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:param points: (X,Y) pairs denoting the location of the horizontal PIs, including start and end
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:param radii: radii values to use for transition
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:param vpoints: (distance_along, Z_height) pairs denoting the location of the vertical PIs, including start and end.
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:param lengths: parabolic vertical curve horizontal length values to use for transition
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:return: Returns an IfcAlignment
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"""
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include_vertical = True if vpoints and lengths else False
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alignment = ifcopenshell.api.alignment.create(
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file, name, include_vertical=include_vertical, start_station=start_station
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)
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horizontal_layout = ifcopenshell.api.alignment.get_horizontal_layout(alignment)
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ifcopenshell.api.alignment.layout_horizontal_alignment_by_pi_method(file, horizontal_layout, hpoints, radii)
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if include_vertical:
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vertical_layout = ifcopenshell.api.alignment.get_vertical_layout(alignment)
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ifcopenshell.api.alignment.layout_vertical_alignment_by_pi_method(file, vertical_layout, vpoints, lengths)
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return alignment
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