def getAttributeValue(self, value):
"""Recursive method that walks through all nested objects of an attribute
and returns a IFC.JSON-4 model structure
Parameters:
value
Returns:
attribute data converted to IFC.JSON-4 model structure
"""
if value == None or value == '':
jsonValue = None
elif isinstance(value, ifcopenshell.entity_instance):
entity = value
entityAttributes = entity.__dict__
# Remove empty properties
if entity.is_a() == 'IfcPropertySingleValue':
try:
value = entity.NominalValue.wrappedValue
if not value:
return None
except:
return None
# Add unit dimensions https://standards.buildingsmart.org/IFC/DEV/IFC4_2/FINAL/HTML/schema/ifcmeasureresource/lexical/ifcdimensionsforsiunit.htm
if entity.is_a() == 'IfcSIUnit':
entityAttributes['dimensions'] = self.getDimensionsForSiUnit(
entity)
# All objects with a GlobalId must be referenced, all others nested
if entity.id() in self.rootobjects:
entityAttributes["GlobalId"] = self.rootobjects[entity.id()]
return self.createReferenceObject(entityAttributes,
self.compact)
else:
if 'GlobalId' in entityAttributes:
entityAttributes["GlobalId"] = guid.split(
guid.expand(entity.GlobalId))[1:-1]
return self.createFullObject(entityAttributes)
elif isinstance(value, tuple):
jsonValue = None
subEnts = []
for subEntity in value:
attrValue = self.getAttributeValue(subEntity)
if attrValue:
subEnts.append(attrValue)
jsonValue = subEnts
else:
jsonValue = value
return jsonValue
def spf2Json(self):
"""
Create json dictionary structure for all attributes of the objects in the root list
also including inverse attributes (except for IfcGeometricRepresentationContext and IfcOwnerHistory types)
# (?) Check every IFC object to see if it is used multiple times
Returns:
dict: IFC.JSON-4 model structure
"""
jsonObjects = []
for entity in self.ifcModel.by_type('IfcOwnerHistory'):
self.ownerHistories[entity.id()] = str(uuid.uuid4())
for entity in self.ifcModel.by_type('IfcGeometricRepresentationContext'):
self.representationContexts[entity.id()] = str(uuid.uuid4())
for entity in self.ifcModel.by_type('IfcObjectDefinition'):
self.objectDefinitions[entity.id()] = guid.split(
guid.expand(entity.GlobalId))[1:-1]
self.rootobjects = dict(self.ownerHistories)
self.rootobjects.update(self.representationContexts)
self.rootobjects.update(self.objectDefinitions)
for key in self.rootobjects:
entity = self.ifcModel.by_id(key)
entityAttributes = entity.__dict__
entityType = entityAttributes['type']
if not entityType in ['IfcGeometricRepresentationContext', 'IfcOwnerHistory']:
for attr in entity.wrapped_data.get_inverse_attribute_names():
inverseAttribute = getattr(entity, attr)
attrValue = self.getAttributeValue(inverseAttribute)
if attrValue:
entityAttributes[attr] = attrValue
else:
continue
entityAttributes["GlobalId"] = self.rootobjects[entity.id()]
jsonObjects.append(self.createFullObject(entityAttributes))
return {
'fileSchema': 'IFC.JSON-4',
'originatingSystem': 'IFC2JSON_python',
'timeStamp': datetime.now().strftime("%Y-%m-%dT%H:%M:%S"),
'data': jsonObjects
}
def getAttributeValue(self, value):
"""Recursive method that walks through all nested objects of an attribute
and returns a IFC.JSON-4 model structure
Parameters:
value
Returns:
attribute data converted to IFC.JSON-4 model structure
"""
if value == None or value == '':
jsonValue = None
elif isinstance(value, ifcopenshell.entity_instance):
entity = value
entityAttributes = entity.__dict__
# Remove empty properties
if entity.is_a('IfcProperty'):
if not self.EMPTY_PROPERTIES:
if self.empty_property(entity):
return None
# Add unit dimensions https://standards.buildingsmart.org/IFC/DEV/IFC4_2/FINAL/HTML/schema/ifcmeasureresource/lexical/ifcdimensionsforsiunit.htm
if entity.is_a('IfcSIUnit'):
entityAttributes['dimensions'] = self.getDimensionsForSiUnit(
entity)
# All objects with a GlobalId must be referenced, all others nested
if entity.id() in self.rootObjects:
entityAttributes["GlobalId"] = self.rootObjects[entity.id()]
return self.createReferenceObject(entityAttributes,
self.COMPACT)
else:
if 'GlobalId' in entityAttributes:
entityAttributes["GlobalId"] = guid.split(
guid.expand(entity.GlobalId))[1:-1]
return self.createFullObject(entityAttributes)
elif isinstance(value, tuple):
jsonValue = tuple(x for x in map(self.getAttributeValue, value)
if x is not None)
else:
jsonValue = value
return jsonValue
def spf2Json(self):
"""
Create json dictionary structure for all attributes of the objects in the root list
(?) also including inverse attributes
(?) Check every IFC object to see if it is used multiple times
Returns:
dict: IFC.JSON-5a model structure
"""
jsonObjects = []
for entity in self.ifcModel.by_type('IfcObjectDefinition'):
self.rootObjects[entity.id()] = guid.split(
guid.expand(entity.GlobalId))[1:-1]
for key in self.rootObjects:
entity = self.ifcModel.by_id(key)
entityAttributes = entity.__dict__
entityType = entityAttributes['type']
if not entityType in [
'IfcGeometricRepresentationContext', 'IfcOwnerHistory'
]:
for attr in entity.wrapped_data.get_inverse_attribute_names():
inverseAttribute = getattr(entity, attr)
entityAttributes[attr] = self.getAttributeValue(
inverseAttribute)
entityAttributes["GlobalId"] = self.rootObjects[entity.id()]
# Convert representations to OBJ
if 'Representation' in entityAttributes:
obj = self.toObj(entity)
if obj:
id = guid.split(guid.expand(guid.new()))[1:-1]
ref = {}
if not self.COMPACT:
ref['type'] = "shapeRepresentation"
ref['ref'] = id
entityAttributes['representations'] = [ref]
self.representations[id] = {
"type": "shapeRepresentation",
"globalId": id,
"representationIdentifier": "Body",
"representationType": "OBJ",
"items": [obj]
}
# (!) delete original representation, even if OBJ generation fails
del entityAttributes['Representation']
jsonObjects.append(self.createFullObject(entityAttributes))
jsonObjects = jsonObjects + list(self.representations.values())
return {
'type': 'IFC.JSON-5a',
'version': self.SCHEMA_VERSION,
'schemaIdentifier': self.ifcModel.wrapped_data.schema,
'originatingSystem': 'IFC2JSON_python Version ' + self.VERSION,
'preprocessorVersion': 'IfcOpenShell ' + ifcopenshell.version,
'timeStamp': datetime.now().strftime("%Y-%m-%dT%H:%M:%S"),
'data': jsonObjects
}
def spf2Json(self):
"""
Create json dictionary structure for all attributes of the objects in the root list
also including inverse attributes (except for IfcGeometricRepresentationContext and IfcOwnerHistory types)
# (?) Check every IFC object to see if it is used multiple times
Returns:
dict: IFC.JSON-4 model structure
"""
jsonObjects = []
relationships = []
# Collect all entity types that already have a GlobalId
for entity in self.ifcModel.by_type('IfcRoot'):
if entity.is_a('IfcRelationship'):
relationships.append(entity)
else:
self.rootObjects[entity.id()] = guid.split(
guid.expand(entity.GlobalId))[1:-1]
# seperately collect all entity types where a GlobalId needs to be added
# for entity in self.ifcModel.by_type('IfcMaterialDefinition'):
# self.rootObjects[entity.id()] = str(uuid.uuid4())
for entity in self.ifcModel.by_type('IfcShapeRepresentation'):
self.rootObjects[entity.id()] = str(uuid.uuid4())
for entity in self.ifcModel.by_type('IfcOwnerHistory'):
self.rootObjects[entity.id()] = str(uuid.uuid4())
for entity in self.ifcModel.by_type(
'IfcGeometricRepresentationContext'):
self.rootObjects[entity.id()] = str(uuid.uuid4())
# Seperately add all IfcRelationship entities so they appear at the end of the list
for entity in relationships:
self.rootObjects[entity.id()] = guid.split(
guid.expand(entity.GlobalId))[1:-1]
for key in self.rootObjects:
entity = self.ifcModel.by_id(key)
entityAttributes = entity.__dict__
entityType = entityAttributes['type']
if not entityType == 'IfcOwnerHistory':
if not self.INCLUDE_INVERSE:
for attr in entity.wrapped_data.get_inverse_attribute_names(
):
inverseAttribute = getattr(entity, attr)
attrValue = self.getAttributeValue(inverseAttribute)
if not attrValue and attrValue is not False:
continue
else:
entityAttributes[attr] = attrValue
entityAttributes["GlobalId"] = self.rootObjects[entity.id()]
jsonObjects.append(self.createFullObject(entityAttributes))
return {
'fileSchema': 'IFC.JSON-4',
'originatingSystem': 'IFC2JSON_python',
'timeStamp': datetime.now().strftime("%Y-%m-%dT%H:%M:%S"),
'data': jsonObjects
}