mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-11 10:06:47 +00:00
Andrej730
98 lines
4.0 KiB
Python
98 lines
4.0 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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import ifcopenshell
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class Usecase:
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def __init__(self, file, material=None, style=None, context=None):
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"""Unassigns a style to a material
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This does the inverse of assign_material_style.
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:param material: The IfcMaterial which you want to unassign the style from.
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:type material: ifcopenshell.entity_instance.entity_instance
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:param style: The IfcPresentationStyle (typically IfcSurfaceStyle) that
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you want to unassign from material. This will then be applied to all
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objects that have that material.
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:type style: ifcopenshell.entity_instance.entity_instance
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:param context: The IfcGeometricRepresentationSubContext at which this
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style should be unassigned. Typically this is the Model BODY context.
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:type context: ifcopenshell.entity_instance.entity_instance
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:return: None
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:rtype: None
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Example:
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.. code:: python
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ifcopenshell.api.run("style.unassign_material_style", model, material=concrete, style=style, context=body)
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"""
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self.file = file
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self.settings = {
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"material": material,
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"style": style,
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"context": context,
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}
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def execute(self):
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for definition in self.settings["material"].HasRepresentation:
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for representation in definition.Representations:
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if not representation.is_a("IfcStyledRepresentation"):
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continue
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if representation.ContextOfItems != self.settings["context"]:
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continue
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for item in representation.Items:
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if not item.is_a("IfcStyledItem"):
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continue
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styles = [s for s in item.Styles if s != self.settings["style"]]
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if not styles:
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self.file.remove(item)
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elif len(styles) != len(item.Styles):
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item.Styles = styles
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if not representation.Items:
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self.file.remove(representation)
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if not definition.Representations:
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self.file.remove(definition)
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# handle material constituents and shape aspects
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material_constituents_names = []
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for inverse in self.file.get_inverse(self.settings["material"]):
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if inverse.is_a("IfcMaterialConstituent") and inverse.Name:
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material_constituents_names.append(inverse.Name)
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if not material_constituents_names:
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return
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elements = ifcopenshell.util.element.get_elements_by_material(self.file, self.settings["material"])
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shape_aspects = []
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for element in elements:
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shape_aspects += ifcopenshell.util.element.get_shape_aspects(element)
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for shape_aspect in shape_aspects:
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if shape_aspect.Name not in material_constituents_names:
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continue
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for rep in shape_aspect.ShapeRepresentations:
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ifcopenshell.api.run(
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"style.unassign_representation_styles",
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self.file,
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shape_representation=rep,
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styles=[self.settings["style"]],
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)
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