ifcopenshell.api.nest.unassign_object

Module Contents

ifcopenshell.api.nest.unassign_object.unassign_object(file: ifcopenshell.file, related_objects: list[ifcopenshell.entity_instance]) → None

Unassigns related_objects from their nests.

An object (the whole within a decomposition) is Nested by zero or one more smaller objects. This function will remove this nesting relationship.

If the object is not part of a nesting relationship, nothing will happen.

Parameters:

related_objects (list[ifcopenshell.entity_instance]) – The list of children of the nesting relationship, typically IfcElements.

Returns:

None

Return type:

None

Example:

task = ifcopenshell.api.root.create_entity(model, ifc_class="IfcTasks")
subtask1 = ifcopenshell.api.root.create_entity(model, ifc_class="IfcTask")
subtask2 = ifcopenshell.api.root.create_entity(model, ifc_class="IfcTask")
ifcopenshell.api.nest.assign_object(model, related_objects=[subtask1], relating_object=task)
ifcopenshell.api.nest.assign_object(model, related_objects=[subtask2], relating_object=task)
# nothing is returned
rel = ifcopenshell.api.nest.unassign_object(model, related_objects=[subtask1])
# nothing is returned, relationship is removed
ifcopenshell.api.nest.unassign_object(model, related_objects=[subtask2])