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IfcOpenShell/src/ifcopenshell-python/ifcopenshell/api/material/copy_material.py
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Python

# IfcOpenShell - IFC toolkit and geometry engine
# Copyright (C) 2021 Dion Moult <dion@thinkmoult.com>
#
# This file is part of IfcOpenShell.
#
# IfcOpenShell is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# IfcOpenShell is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with IfcOpenShell. If not, see <http://www.gnu.org/licenses/>.
import ifcopenshell
import ifcopenshell.util.element
def copy_material(file, material=None) -> None:
"""Copies a material
All material psets and styles are copied. The copied material is not
associated to any elements.
:param material: The IfcMaterial to copy
:type material: ifcopenshell.entity_instance
:return: The new copy of the material
:rtype: ifcopenshell.entity_instance
Example:
.. code:: python
concrete = ifcopenshell.api.run("material.add_material", model, name="CON01", category="concrete")
# Let's duplicate the concrete material
concrete_copy = ifcopenshell.api.run("material.copy_material", model, material=concrete)
"""
settings = {"material": material}
if settings["material"].is_a("IfcMaterial"):
new = ifcopenshell.util.element.copy(file, settings["material"])
for inverse in file.get_inverse(settings["material"]):
if inverse.is_a("IfcMaterialProperties"):
# Properties must not be shared between objects for convenience of authoring
inverse = ifcopenshell.util.element.copy(file, inverse)
inverse.Material = new
props_attribute = "Properties"
if file.schema == "IFC2X3":
if not inverse.is_a("IfcExtendedMaterialProperties"):
continue
props_attribute = "ExtendedProperties"
props = getattr(inverse, props_attribute)
if not props:
continue
copied_props = []
for pset in props:
copied_props.append(ifcopenshell.util.element.copy_deep(file, pset))
setattr(inverse, props_attribute, copied_props)
elif inverse.is_a("IfcMaterialDefinitionRepresentation"):
inverse = ifcopenshell.util.element.copy_deep(
file, inverse, exclude=["IfcRepresentationContext", "IfcMaterial"]
)
inverse.RepresentedMaterial = new
return new