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geometry.unassign_representation to remove shape aspects

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previously it was leaving unused shape aspects unconnected to any other elements, now it will purge them
This commit is contained in:
Andrej730
2024-09-13 16:50:41 +05:00
parent aa289fd796
commit 8061e22480
2 changed files with 39 additions and 3 deletions
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src/ifcopenshell-python/ifcopenshell/api/geometry/unassign_representation.py
+23 -2
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@@ -50,13 +50,16 @@ class Usecase:
return
representations.remove(representation)
if not representations:
self.file.remove(product.Representation)
product_def = product.Representation
# TODO: should somehow find matching shape aspect and remove it
# even before the last representation is removed.
self.process_shape_aspects(product_def)
self.file.remove(product_def)
else:
product.Representation.Representations = representations
def unassign_type_representation(self) -> None:
matching_representation_map = None
representation_maps = self.settings["product"].RepresentationMaps or []
for representation_map in self.settings["product"].RepresentationMaps or []:
if representation_map.MappedRepresentation == self.settings["representation"]:
@@ -68,8 +71,26 @@ class Usecase:
self.settings["product"].RepresentationMaps = [
rm for rm in self.settings["product"].RepresentationMaps if rm != matching_representation_map
] or None
self.process_shape_aspects(matching_representation_map)
self.remove_representation_map_only(matching_representation_map)
def process_shape_aspects(self, product_representation: ifcopenshell.entity_instance) -> None:
# Technically IfcShapeAspect doesn't become invalid when product representation is removed,
# but shape aspect makes sense only in context of some other representation.
if self.file.schema == "IFC2X3" and product_representation.is_a("IfcRepresentationMap"):
shape_aspects = [
a
for a in self.file.by_type("IfcShapeAspect")
if a.PartOfProductDefinitionShape == product_representation
]
else:
shape_aspects = product_representation.HasShapeAspects
for shape_aspect in shape_aspects:
representations = shape_aspect.ShapeRepresentations
self.file.remove(shape_aspect)
for rep in representations:
ifcopenshell.api.geometry.remove_representation(self.file, rep)
def remove_representation_map_only(self, representation_map: ifcopenshell.entity_instance) -> None:
representation_map.MappedRepresentation = self.file.createIfcShapeRepresentation()
ifcopenshell.util.element.remove_deep2(self.file, representation_map)