96 lines
4.1 KiB
Python
96 lines
4.1 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.api.geometry
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import ifcopenshell.api.owner
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import ifcopenshell.util.element
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def assign_representation(
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file: ifcopenshell.file, product: ifcopenshell.entity_instance, representation: ifcopenshell.entity_instance
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) -> None:
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usecase = Usecase()
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usecase.file = file
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return usecase.execute(product, representation)
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class Usecase:
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file: ifcopenshell.file
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def execute(self, product: ifcopenshell.entity_instance, representation: ifcopenshell.entity_instance) -> None:
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if product.is_a("IfcProduct"):
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product_type = ifcopenshell.util.element.get_type(product)
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if (
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product_type
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and product_type.RepresentationMaps
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and representation.RepresentationType != "MappedRepresentation"
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# Revit is adding a non-mapped representation to the exported profile-based types,
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# so assigning representation to occurrence by accident was assigning it to the type.
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# We guard from this by skipping profile and layer-based types.
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# See 6934 for example.
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and not (
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(material := ifcopenshell.util.element.get_material(product_type))
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and material.is_a() in ("IfcMaterialProfileSet", "IfcMaterialLayerSet")
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)
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):
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product = product_type
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if product.is_a("IfcProduct"):
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self.assign_product_representation(product, representation)
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elif product.is_a("IfcTypeProduct"):
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if product.RepresentationMaps:
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maps = list(product.RepresentationMaps)
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else:
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maps = []
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self.zero = self.file.createIfcCartesianPoint((0.0, 0.0, 0.0))
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self.x_axis = self.file.createIfcDirection((1.0, 0.0, 0.0))
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self.z_axis = self.file.createIfcDirection((0.0, 0.0, 1.0))
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maps.append(
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self.file.create_entity(
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"IfcRepresentationMap",
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**{
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"MappingOrigin": self.file.createIfcAxis2Placement3D(self.zero, self.z_axis, self.x_axis),
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"MappedRepresentation": representation,
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},
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)
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)
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product.RepresentationMaps = maps
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if self.file.schema == "IFC2X3":
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types = product.ObjectTypeOf
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else:
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types = product.Types
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if types:
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for element in types[0].RelatedObjects:
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mapped_representation = ifcopenshell.api.geometry.map_representation(
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self.file, representation=representation
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)
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self.assign_product_representation(element, mapped_representation)
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ifcopenshell.api.owner.update_owner_history(self.file, element=product)
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def assign_product_representation(
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self, product: ifcopenshell.entity_instance, representation: ifcopenshell.entity_instance
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) -> None:
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definition = product.Representation
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if not definition:
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definition = self.file.createIfcProductDefinitionShape()
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product.Representation = definition
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representations = list(definition.Representations) if definition.Representations else []
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representations.append(representation)
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definition.Representations = representations
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