94 lines
3.8 KiB
Python
94 lines
3.8 KiB
Python
# IfcOpenShell - IFC toolkit and geometry engine
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# Copyright (C) 2021 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 collections.abc import Iterable
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import ifcopenshell.api.style
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import ifcopenshell.util.element
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def remove_style(file: ifcopenshell.file, style: ifcopenshell.entity_instance) -> None:
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"""Removes a presentation style
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All of the presentation items of the style will also be removed.
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:param style: The IfcPresentationStyle to remove.
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:return: None
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Example:
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.. code:: python
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# Create a new surface style
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style = ifcopenshell.api.style.add_style(model)
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# Not anymore!
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ifcopenshell.api.style.remove_style(model, style=style)
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"""
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usecase = Usecase()
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usecase.file = file
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return usecase.execute(style)
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class Usecase:
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file: ifcopenshell.file
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def execute(
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self, style: ifcopenshell.entity_instance, do_not_delete: Iterable[ifcopenshell.entity_instance] = ()
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) -> None:
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self.purge_inverses(style)
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ifc_class = style.is_a()
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if ifc_class == "IfcSurfaceStyle":
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for style_ in style.Styles:
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ifcopenshell.api.style.remove_surface_style(self.file, style=style_)
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elif ifc_class == "IfcFillAreaStyle":
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for style_ in style.FillStyles:
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ifcopenshell.util.element.remove_deep2(
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self.file, style_, also_consider=[style], do_not_delete=list(do_not_delete)
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)
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self.file.remove(style)
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def purge_inverses(self, style: ifcopenshell.entity_instance) -> None:
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for inverse in self.file.get_inverse(style):
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if inverse.is_a("IfcStyledItem"):
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if len(inverse.Styles) == 1:
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self.purge_styled_representations(inverse)
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self.file.remove(inverse)
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# IfcCurveStyle -> IfcFillAreaStyleHatching.
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elif inverse.is_a("IfcFillAreaStyleHatching"):
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self.purge_fill_area_style_hatching(inverse, style)
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def purge_styled_representations(self, styled_item: ifcopenshell.entity_instance) -> None:
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for inverse in self.file.get_inverse(styled_item):
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if inverse.is_a("IfcStyledRepresentation") and len(inverse.Items) == 1:
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self.purge_material_definition_representations(inverse)
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self.file.remove(inverse)
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def purge_material_definition_representations(self, styled_representation: ifcopenshell.entity_instance) -> None:
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for inverse in self.file.get_inverse(styled_representation):
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if inverse.is_a("IfcMaterialDefinitionRepresentation") and len(inverse.Representations) == 1:
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self.file.remove(inverse)
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def purge_fill_area_style_hatching(
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self, fill_area_style_hatching: ifcopenshell.entity_instance, style: ifcopenshell.entity_instance
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) -> None:
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for inverse in self.file.get_inverse(fill_area_style_hatching):
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if inverse.is_a("IfcFillAreaStyle"):
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self.execute(inverse, do_not_delete=(fill_area_style_hatching, style))
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ifcopenshell.util.element.remove_deep2(self.file, fill_area_style_hatching, do_not_delete=[style])
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