mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-10 09:48:32 +00:00
Richard Brice
04e07db0a3
* Start of the official alignment API * Import alignment into bonsai model using CSV file
52 lines
2.1 KiB
Python
52 lines
2.1 KiB
Python
# 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.util
|
|
from ifcopenshell import entity_instance
|
|
from typing import Sequence
|
|
|
|
import ifcopenshell.util.representation
|
|
|
|
|
|
def get_basis_curve(alignment: entity_instance) -> entity_instance:
|
|
"""
|
|
Returns the basis curve for an alignment. This curve is the geometric representation that is used
|
|
as the basis curve for vertical and cant alignments.
|
|
|
|
:param alignment: The alignment
|
|
:return: The geometric representation that is used as a basis curve, typically an IfcCompositeCurve, or None if the alignment does not have a representation
|
|
|
|
Example:
|
|
|
|
.. code:: python
|
|
alignment = model.by_type("IfcAlignment")[0]
|
|
composite_curve = ifcopenshell.api.alignment.get_basis_curve(alignment)
|
|
"""
|
|
axis = None
|
|
|
|
representations = ifcopenshell.util.representation.get_representations_iter(alignment)
|
|
for representation in representations:
|
|
if (representation.RepresentationIdentifier == "Axis" and representation.RepresentationType == "Curve2D") or (
|
|
representation.RepresentationIdentifier == "FootPrint" and representation.RepresentationType == "Curve2D"
|
|
):
|
|
axis = representation
|
|
break
|
|
|
|
return None if axis == None or axis.Items == None or len(axis.Items) == 0 else axis.Items[0]
|