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.util.element
+
+
+def disconnect_path(
+    file: ifcopenshell.file,
+    element: Optional[ifcopenshell.entity_instance] = None,
+    connection_type: Optional[str] = None,
+    relating_element: Optional[ifcopenshell.entity_instance] = None,
+    related_element: Optional[ifcopenshell.entity_instance] = None,
+) -> None:
+    """There are two options to use this API method:
+    - provide `element` (connected from) and `connection_type` that should be disconnected.
+    - provide connected elements to disconnect explicitly:
+    `relating_element` (connected from) and `related_element` (connected to)
+    """
+    if connection_type and element:
+        connections = [
+            r
+            for r in element.ConnectedTo
+            if r.is_a("IfcRelConnectsPathElements") and r.RelatingConnectionType == connection_type
+        ] + [
+            r
+            for r in element.ConnectedFrom
+            if r.is_a("IfcRelConnectsPathElements") and r.RelatedConnectionType == connection_type
+        ]
+    elif related_element:
+        connections = [
+            r
+            for r in relating_element.ConnectedTo
+            if r.is_a("IfcRelConnectsPathElements") and r.RelatedElement == related_element
+        ]
+
+    for connection in set(connections):
+        history = connection.OwnerHistory
+        file.remove(connection)
+        if history:
+            ifcopenshell.util.element.remove_deep2(file, history)