First Commit

2026-05-31 10:17:09 +07:00
commit 17a9c69379
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+# 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/>.
+
+from typing import Optional
+
+import ifcopenshell
+import ifcopenshell.api.owner
+import ifcopenshell.guid
+import ifcopenshell.util.element
+
+
+def connect_path(
+    file: ifcopenshell.file,
+    relating_element: ifcopenshell.entity_instance,
+    related_element: ifcopenshell.entity_instance,
+    relating_connection: str = "NOTDEFINED",
+    related_connection: str = "NOTDEFINED",
+    description: Optional[str] = None,
+    connection_geometry: Optional[ifcopenshell.entity_instance] = None,
+) -> ifcopenshell.entity_instance:
+    incompatible_connections: list[ifcopenshell.entity_instance] = []
+    for rel in relating_element.ConnectedTo:
+        if not rel.is_a("IfcRelConnectsPathElements"):
+            continue
+        if rel.RelatedElement == related_element:
+            incompatible_connections.append(rel)
+        elif rel.RelatingConnectionType in ["ATSTART", "ATEND"] and rel.RelatingConnectionType == relating_connection:
+            incompatible_connections.append(rel)
+
+    for rel in relating_element.ConnectedFrom:
+        if not rel.is_a("IfcRelConnectsPathElements"):
+            continue
+        if rel.RelatedConnectionType in ["ATSTART", "ATEND"] and rel.RelatedConnectionType == relating_connection:
+            incompatible_connections.append(rel)
+
+    for rel in related_element.ConnectedFrom:
+        if not rel.is_a("IfcRelConnectsPathElements"):
+            continue
+        if rel.RelatedConnectionType in ["ATSTART", "ATEND"] and rel.RelatedConnectionType == related_connection:
+            incompatible_connections.append(rel)
+
+    for rel in related_element.ConnectedTo:
+        if not rel.is_a("IfcRelConnectsPathElements"):
+            continue
+        if rel.RelatedElement == relating_element:
+            incompatible_connections.append(rel)
+        elif rel.RelatingConnectionType in ["ATSTART", "ATEND"] and rel.RelatingConnectionType == related_connection:
+            incompatible_connections.append(rel)
+
+    if incompatible_connections:
+        for connection in set(incompatible_connections):
+            history = connection.OwnerHistory
+            file.remove(connection)
+            if history:
+                ifcopenshell.util.element.remove_deep2(file, history)
+
+    return file.create_entity(
+        "IfcRelConnectsPathElements",
+        ifcopenshell.guid.new(),
+        OwnerHistory=ifcopenshell.api.owner.create_owner_history(file),
+        Description=description,
+        ConnectionGeometry=connection_geometry,
+        RelatingElement=relating_element,
+        RelatedElement=related_element,
+        RelatingConnectionType=relating_connection,
+        RelatedConnectionType=related_connection,
+        RelatingPriorities=[],
+        RelatedPriorities=[],
+    )