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Implement support for managing nest hosts and components.

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This commit is contained in:
Dion Moult
2023-12-07 13:18:33 +11:00
parent 302dc8eb9f
commit 401db55c55
19 changed files with 704 additions and 22 deletions
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src/ifcopenshell-python/ifcopenshell/util/element.py
+33 -5
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@@ -805,7 +805,8 @@ def get_aggregate(element):
aggregate = ifcopenshell.util.element.get_aggregate(element)
"""
if hasattr(element, "Decomposes") and element.Decomposes:
return element.Decomposes[0].RelatingObject
if element.Decomposes[0].is_a("IfcRelAggregates"): # IFC2X3
return element.Decomposes[0].RelatingObject
def get_nest(element):
@@ -821,13 +822,17 @@ def get_nest(element):
element = file.by_type("IfcBeam")[0]
aggregate = ifcopenshell.util.element.get_nest(element)
"""
if hasattr(element, "Nests") and element.Nests:
return element.Nests[0].RelatingObject
if hasattr(element, "Nests"):
if element.Nests:
return element.Nests[0].RelatingObject
elif hasattr(element, "Decomposes") and element.Decomposes: # IFC2X3
if element.Decomposes[0].is_a("IfcRelNests"):
return element.Decomposes[0].RelatingObject
def get_parts(element):
"""
Retrieves the parts of an element.
Retrieves the parts of an element that have an aggregation relationship.
:param element: The IFC element
:return: The parts of the element
@@ -840,7 +845,30 @@ def get_parts(element):
"""
if hasattr(element, "IsDecomposedBy") and element.IsDecomposedBy:
return element.IsDecomposedBy[0].RelatedObjects
if element.IsDecomposedBy[0].is_a("IfcRelAggregates"):
return element.IsDecomposedBy[0].RelatedObjects
def get_components(element):
"""
Retrieves the components of an element that have an nest relationship.
:param element: The IFC element
:return: The components of the element
Example:
.. code:: python
element = file.by_type("IfcElementAssembly")[0]
components = ifcopenshell.util.element.get_components(element)
"""
if hasattr(element, "IsNestedBy"):
if element.IsNestedBy:
return element.IsNestedBy[0].RelatedObjects
elif hasattr(element, "IsDecomposedBy") and element.IsDecomposedBy:
if element.IsDecomposedBy[0].is_a("IfcRelNests"):
return element.IsDecomposedBy[0].RelatedObjects
def replace_attribute(element, old, new):