93 lines
3.1 KiB
Python
93 lines
3.1 KiB
Python
# IfcOpenShell - IFC toolkit and geometry engine
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# Copyright (C) 2023 Dion Moult <dion@thinkmoult.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 typing import Any
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import numpy as np
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import ifcopenshell.api.geometry
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import ifcopenshell.util.unit
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def create_2pt_wall(
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file: ifcopenshell.file,
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element: ifcopenshell.entity_instance,
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context: ifcopenshell.entity_instance,
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p1: tuple[float, float],
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p2: tuple[float, float],
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elevation: float,
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height: float,
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thickness: float,
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is_si: bool = True,
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) -> ifcopenshell.entity_instance:
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"""
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Create a wall between two points (p1 and p2).
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A shortcut for geometry.add_wall_representation.
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:param element: Wall IFC element.
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:param context: IfcGeometricRepresentationContext for the representation.
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only Model/Body/MODEL_VIEW type of representations are currently supported.
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:param p1: The starting point (x, y) of the wall.
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:param p2: The ending point (x, y) of the wall.
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:param elevation: The base elevation (z-coordinate) for the wall.
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:param height: The height of the wall.
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:param thickness: The thickness of the wall.
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:param is_si: If True, provided arguments units are treated as SI (meters).
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If False, values are converted from project units to SI.
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:return: IfcShapeRepresentation.
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"""
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si_conversion = ifcopenshell.util.unit.calculate_unit_scale(file)
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p1_ = np.array(p1).astype(float)
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p2_ = np.array(p2).astype(float)
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length = float(np.linalg.norm(p2_ - p1_))
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if not is_si:
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length = convert_unit_to_si(length, si_conversion)
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height = convert_unit_to_si(height, si_conversion)
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thickness = convert_unit_to_si(thickness, si_conversion)
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# No need to convert p2 as length is already calculated.
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p1_ = convert_unit_to_si(p1_, si_conversion)
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elevation = convert_unit_to_si(elevation, si_conversion)
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representation = ifcopenshell.api.geometry.add_wall_representation(
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file,
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context=context,
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length=length,
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height=height,
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thickness=thickness,
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)
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v = p2_ - p1_
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v /= float(np.linalg.norm(v))
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matrix = np.array(
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[
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[v[0], -v[1], 0, p1_[0]],
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[v[1], v[0], 0, p1_[1]],
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[0, 0, 1, elevation],
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[0, 0, 0, 1],
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]
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)
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ifcopenshell.api.geometry.edit_object_placement(file, product=element, matrix=matrix)
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return representation
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def convert_unit_to_si(co: Any, si_conversion: float) -> Any:
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return co * si_conversion
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