104 lines
4.3 KiB
Python
104 lines
4.3 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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import ifcopenshell
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import ifcopenshell.util.element
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def copy_material(file: ifcopenshell.file, material: ifcopenshell.entity_instance) -> ifcopenshell.entity_instance:
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"""Copies a material or material set
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All material psets and styles are copied. The copied material is not
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associated to any elements.
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If a material set is copied, the set items are also copied. However the
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underlying materials (and profiles) used within the set items are reused.
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If a material is associated with a presentation style, that presentation
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style is reused.
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:param material: The IfcMaterialDefinition to copy
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:return: The new copy of the material
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Example:
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.. code:: python
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concrete = ifcopenshell.api.material.add_material(model, name="CON01", category="concrete")
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# Let's duplicate the concrete material
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concrete_copy = ifcopenshell.api.material.copy_material(model, material=concrete)
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"""
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if material.is_a("IfcMaterial"):
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return _copy_material_with_inverses(file, material)
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elif material.is_a("IfcMaterialConstituentSet"):
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new = _copy_material_with_inverses(file, material)
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new.MaterialConstituents = [copy_material(file, i) for i in material.MaterialConstituents]
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return new
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elif material.is_a("IfcMaterialConstituent"):
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return _copy_material_with_inverses(file, material)
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elif material.is_a("IfcMaterialLayerSet"):
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new = _copy_material_with_inverses(file, material)
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new.MaterialLayers = [copy_material(file, i) for i in material.MaterialLayers]
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return new
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elif material.is_a("IfcMaterialLayer"):
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return _copy_material_with_inverses(file, material)
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elif material.is_a("IfcMaterialProfileSet"):
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new = _copy_material_with_inverses(file, material)
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new.MaterialProfiles = [copy_material(file, i) for i in material.MaterialProfiles]
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return new
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elif material.is_a("IfcMaterialProfile"):
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return _copy_material_with_inverses(file, material)
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elif material.is_a("IfcMaterialList"):
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return _copy_material_with_inverses(file, material)
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else:
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raise Exception(f"Unexpected material type: '{material.is_a()}' ({material}).")
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def _copy_material_with_inverses(
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file: ifcopenshell.file, material: ifcopenshell.entity_instance
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) -> ifcopenshell.entity_instance:
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new = ifcopenshell.util.element.copy(file, material)
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for inverse in file.get_inverse(material):
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if inverse.is_a("IfcMaterialProperties"):
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# Properties must not be shared between objects for convenience of authoring
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inverse = ifcopenshell.util.element.copy(file, inverse)
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inverse.Material = new
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props_attribute = "Properties"
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if file.schema == "IFC2X3":
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if not inverse.is_a("IfcExtendedMaterialProperties"):
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continue
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props_attribute = "ExtendedProperties"
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props = getattr(inverse, props_attribute)
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if not props:
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continue
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copied_props = []
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for pset in props:
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copied_props.append(ifcopenshell.util.element.copy_deep(file, pset))
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setattr(inverse, props_attribute, copied_props)
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elif inverse.is_a("IfcMaterialDefinitionRepresentation"):
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inverse = ifcopenshell.util.element.copy_deep(
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file, inverse, exclude=["IfcRepresentationContext", "IfcMaterial", "IfcPresentationStyle"]
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)
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inverse.RepresentedMaterial = new
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return new
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