ifcopenshell.api.type.unassign_type

Module Contents

ifcopenshell.api.type.unassign_type.unassign_type(file: ifcopenshell.file, related_objects: list[ifcopenshell.entity_instance]) → None

Unassigns a type from occurrences

Note that unassigning a type doesn’t automatically remove mapped representations and material usages associated with the previously assigned type.

Parameters:

related_objects (list[ifcopenshell.entity_instance]) – List of IfcElement occurrences.

Returns:

None

Return type:

None

Example:

# A furniture type. This would correlate to a particular model in a
# manufacturer's catalogue. Like an Ikea sofa :)
furniture_type = ifcopenshell.api.root.create_entity(model,
    ifc_class="IfcFurnitureType", name="FUN01")

# An individual occurrence of a that sofa.
furniture = ifcopenshell.api.root.create_entity(model, ifc_class="IfcFurniture")

# Assign the furniture to the furniture type.
ifcopenshell.api.type.assign_type(model, related_objects=[furniture], relating_type=furniture_type)

# Change our mind. Maybe it's a different type?
ifcopenshell.api.type.unassign_type(model, related_objects=[furniture])