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https://github.com/IfcOpenShell/IfcOpenShell.git
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Dion Moult
50 lines
2.0 KiB
Python
50 lines
2.0 KiB
Python
# IfcOpenShell - IFC toolkit and geometry engine
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# Copyright (C) 2022 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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import ifcopenshell.util.unit
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class Usecase:
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def __init__(self, file, **settings):
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self.file = file
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self.settings = {
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"context": None, # IfcGeometricRepresentationContext
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"axis": [], # A list of ordered coordinates for the axis
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}
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for key, value in settings.items():
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self.settings[key] = value
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def execute(self):
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self.settings["unit_scale"] = ifcopenshell.util.unit.calculate_unit_scale(self.file)
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points = [self.convert_si_to_unit(p) for p in self.settings["axis"]]
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if self.file.schema == "IFC2X3":
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curve = self.file.createIfcPolyline([self.file.createIfcCartesianPoint(p) for p in points])
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else:
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curve = self.file.createIfcIndexedPolyCurve(self.file.createIfcCartesianPointList3D(points))
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return self.file.createIfcShapeRepresentation(
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self.settings["context"],
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self.settings["context"].ContextIdentifier,
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"Curve2D" if len(self.settings["axis"][0]) == 2 else "Curve3D",
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[curve],
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)
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def convert_si_to_unit(self, co):
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if isinstance(co, (tuple, list)):
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return [self.convert_si_to_unit(o) for o in co]
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return co / self.settings["unit_scale"]
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