65 lines
2.7 KiB
Python
65 lines
2.7 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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def map_representation(
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file: ifcopenshell.file, representation: ifcopenshell.entity_instance
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) -> ifcopenshell.entity_instance:
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usecase = Usecase()
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usecase.file = file
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return usecase.execute(representation)
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class Usecase:
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file: ifcopenshell.file
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def execute(self, representation: ifcopenshell.entity_instance) -> ifcopenshell.entity_instance:
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self.representation = representation
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mapping_source = self.get_mapping_source()
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zero = self.file.createIfcCartesianPoint((0.0, 0.0, 0.0))
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x_axis = self.file.createIfcDirection((1.0, 0.0, 0.0))
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y_axis = self.file.createIfcDirection((0.0, 1.0, 0.0))
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z_axis = self.file.createIfcDirection((0.0, 0.0, 1.0))
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mapping_target = self.file.createIfcCartesianTransformationOperator3D(x_axis, y_axis, zero, 1, z_axis)
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mapped_item = self.file.createIfcMappedItem(mapping_source, mapping_target)
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return self.file.create_entity(
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"IfcShapeRepresentation",
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**{
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"ContextOfItems": representation.ContextOfItems,
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"RepresentationIdentifier": representation.RepresentationIdentifier,
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"RepresentationType": "MappedRepresentation",
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"Items": [mapped_item],
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}
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)
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def get_mapping_source(self) -> ifcopenshell.entity_instance:
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for inverse in self.file.get_inverse(self.representation):
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if inverse.is_a("IfcRepresentationMap"):
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return inverse
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zero = self.file.createIfcCartesianPoint((0.0, 0.0, 0.0))
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x_axis = self.file.createIfcDirection((1.0, 0.0, 0.0))
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z_axis = self.file.createIfcDirection((0.0, 0.0, 1.0))
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mapping_origin = self.file.createIfcAxis2Placement3D(zero, z_axis, x_axis)
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return self.file.createIfcRepresentationMap(
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MappingOrigin=mapping_origin, MappedRepresentation=self.representation
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)
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