mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-09-19 14:41:25 +00:00
Andrej730
66 lines
2.7 KiB
Python
66 lines
2.7 KiB
Python
# IfcPatch - IFC patching utiliy
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# Copyright (C) 2020, 2021 Dion Moult <dion@thinkmoult.com>
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#
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# This file is part of IfcPatch.
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#
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# IfcPatch 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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# IfcPatch 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 IfcPatch. If not, see <http://www.gnu.org/licenses/>.
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import ifcopenshell.util.element
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class Patcher:
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def __init__(self, file, logger):
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"""Downgrade indexed polycurves to simple polylines
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Low quality IFC viewers like Navisworks do not support various IFC4
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geometry, such as indexed polycurves. These can result in missing
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geometry or geometric glitches (such as arcs being displayed as full
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circles). This is pretty common when viewing IFCs from ArchiCAD that
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include site boundaries (incorrectly drawn using the ArchiCAD grid tool,
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as ArchiCAD has no site boundary tool).
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This will downgrade specifically the indexed polycurve geometry types in
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an IFC4 model (IFC2X3 does not have this geometry type) to help
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compatibility in viewers like Navisworks.
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Example:
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ifcpatch.execute({"input": "input.ifc", "file": model, "recipe": "DowngradeIndexedPolyCurve", "arguments": []})
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"""
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self.file = file
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self.logger = logger
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def patch(self):
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if self.file.schema == "IFC2X3":
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return
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curve_map = {}
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for curve in self.file.by_type("IfcIndexedPolyCurve"):
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if "IfcArcIndex" in [s.is_a() for s in curve.Segments]:
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print("Could not convert curve due to arcs", curve)
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continue
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coordinates = curve.Points.CoordList
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points = []
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for i, segment in enumerate(curve.Segments):
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segment = segment.wrappedValue
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if i == 0:
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points.append(self.file.createIfcCartesianPoint(coordinates[segment[0] - 1]))
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points.append(self.file.createIfcCartesianPoint(coordinates[segment[1] - 1]))
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polyline = self.file.create_entity("IfcPolyline", points)
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curve_map[curve] = polyline
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for curve, polyline in curve_map.items():
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for inverse in self.file.get_inverse(curve):
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ifcopenshell.util.element.replace_attribute(inverse, curve, polyline)
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