61 lines
2.8 KiB
Python
61 lines
2.8 KiB
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.util.element
|
|
|
|
|
|
def remove_layer(
|
|
file: ifcopenshell.file, layer: ifcopenshell.entity_instance, should_remove_material: bool = False
|
|
) -> None:
|
|
"""Removes a layer from a layer set
|
|
|
|
Note that it is invalid to have zero items in a set, so you should leave
|
|
at least one layer to ensure a valid IFC dataset.
|
|
|
|
:param layer: The IfcMaterialLayer entity you want to remove
|
|
:param should_remove_material: If true, materials with no users will be removed
|
|
|
|
Example:
|
|
|
|
.. code:: python
|
|
|
|
# Create a material set for steel stud partition walls.
|
|
material_set = ifcopenshell.api.material.add_material_set(model,
|
|
name="Window", set_type="IfcMaterialConstituentSet")
|
|
|
|
gypsum = ifcopenshell.api.material.add_material(model, name="PB01", category="gypsum")
|
|
steel = ifcopenshell.api.material.add_material(model, name="ST01", category="steel")
|
|
|
|
# Now let's use those materials as three layers in our set, such
|
|
# that the steel studs are sandwiched by the gypsum. Let's imagine
|
|
# we're setting the layer thickness in millimeters.
|
|
layer1 = ifcopenshell.api.material.add_layer(model, layer_set=material_set, material=gypsum)
|
|
ifcopenshell.api.material.edit_layer(model, layer=layer1, attributes={"LayerThickness": 13})
|
|
layer2 = ifcopenshell.api.material.add_layer(model, layer_set=material_set, material=steel)
|
|
ifcopenshell.api.material.edit_layer(model, layer=layer2, attributes={"LayerThickness": 92})
|
|
layer3 = ifcopenshell.api.material.add_layer(model, layer_set=material_set, material=gypsum)
|
|
ifcopenshell.api.material.edit_layer(model, layer=layer3, attributes={"LayerThickness": 13})
|
|
|
|
# Let's remove the last layer, such that the wall might be clad only
|
|
# one one side such as to line a services riser.
|
|
ifcopenshell.api.material.remove_layer(model, layer=layer3)
|
|
"""
|
|
material = layer.Material
|
|
file.remove(layer)
|
|
if material and should_remove_material:
|
|
ifcopenshell.util.element.remove_deep2(file, material)
|