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IfcOpenShell/src/ifcopenshell-python/ifcopenshell/util/system.py
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Python

# IfcOpenShell - IFC toolkit and geometry engine
# Copyright (C) 2022 Dion Moult <dion@thinkmoult.com>
#
# This file is part of IfcOpenShell.
#
# IfcOpenShell is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# IfcOpenShell is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with IfcOpenShell. If not, see <http://www.gnu.org/licenses/>.
import ifcopenshell.util
group_types = {
"IfcZone": ("IfcZone", "IfcSpace", "IfcSpatialZone"),
"IfcBuiltSystem": (
"IfcBuiltElement",
"IfcFurnishingElement",
"IfcElementAssembly",
"IfcTransportElement",
),
"IfcBuildingSystem": (
"IfcBuildingElement",
"IfcFurnishingElement",
"IfcElementAssembly",
"IfcTransportElement",
),
"IfcDistributionSystem": ("IfcDistributionElement",),
"IfcStructuralAnalysisModel": ("IfcStructuralMember", "IfcStructuralConnection"),
"IfcSystem": ("IfcProduct",),
"IfcGroup": ("IfcObjectDefinition",),
}
def is_assignable(product, system) -> bool:
for assignable in group_types.get(system.is_a(), ()):
if product.is_a(assignable):
return True
return False
def get_system_elements(system):
results = []
for rel in system.IsGroupedBy:
results.extend(rel.RelatedObjects)
return results
def get_element_systems(element):
results = []
for rel in element.HasAssignments:
if rel.is_a("IfcRelAssignsToGroup") and rel.RelatingGroup.is_a() in (
"IfcSystem",
"IfcDistributionSystem",
"IfcBuildingSystem",
"IfcZone",
):
results.append(rel.RelatingGroup)
return results
def get_ports(element):
results = []
for rel in getattr(element, "IsNestedBy", []) or []:
results.extend([o for o in rel.RelatedObjects if o.is_a("IfcDistributionPort")])
# IFC2X3 only, deprecated in IFC4
for rel in getattr(element, "HasPorts", []) or []:
results.append(rel.RelatingPort)
return results
def get_connected_port(port):
for rel in port.ConnectedTo:
return rel.RelatedPort
for rel in port.ConnectedFrom:
return rel.RelatingPort
def get_connected_to(element):
results = []
for port in ifcopenshell.util.system.get_ports(element):
for relConnectsPort in port.ConnectedTo:
for disPort in [relConnectsPort.RelatedPort, relConnectsPort.RelatingPort]:
if hasattr(disPort, "Nests"):
for relNest in disPort.Nests:
if relNest.RelatingObject != element:
results.append(relNest.RelatingObject)
# IFC2X3 only, deprecated in IFC4
elif hasattr(disPort, "ContainedIn"):
for relConPortToElement in disPort.ContainedIn:
if relConPortToElement.RelatedElement != element:
results.append(relConPortToElement.RelatedElement)
return results
def get_connected_from(element):
results = []
for port in ifcopenshell.util.system.get_ports(element):
for relConnectsPort in port.ConnectedFrom:
for disPort in [relConnectsPort.RelatedPort, relConnectsPort.RelatingPort]:
if hasattr(disPort, "Nests"):
for relNest in disPort.Nests:
if relNest.RelatingObject != element:
results.append(relNest.RelatingObject)
# IFC2X3 only, deprecated in IFC4
elif hasattr(disPort, "ContainedIn"):
for relConPortToElement in disPort.ContainedIn:
if relConPortToElement.RelatedElement != element:
results.append(relConPortToElement.RelatedElement)
return results