First Commit

2026-05-31 10:17:09 +07:00
commit 17a9c69379
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+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2021 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 Literal
+
+import ifcopenshell.api.root
+
+
+def add_structural_activity(
+    file: ifcopenshell.file,
+    applied_load: ifcopenshell.entity_instance,
+    structural_member: ifcopenshell.entity_instance,
+    ifc_class: str = "IfcStructuralPlanarAction",
+    predefined_type: str = "CONST",
+    global_or_local: Literal["GLOBAL_COORDS", "LOCAL_COORDS"] = "GLOBAL_COORDS",
+) -> ifcopenshell.entity_instance:
+    """Adds a new structural activity
+
+    A structural activity is either a structural action or a reaction. It
+    may be applied to a point, a curve, or a planar surface, and may be a
+    constant load, linear, etc.
+
+    The activity must be defined using an applied load, and associated with
+    a structural member.
+
+    :param ifc_class: Choose from any subtype of IfcStructuralActivity.
+    :param predefined_type: View the IFC documentation for what valid
+        predefined types may be chosen.
+    :param global_or_local: The location coordinates of the load is always
+        defined locally relative to the structural member the activity is
+        assigned to. However, the directions of the applied load may either
+        be specified globally or locally depending on how this argument is
+        set. Choose from GLOBAL_COORDS or LOCAL_COORDS.
+    :param applied_load: The IfcStructuralLoad that is applied in this
+        activity.
+    :param structural_member: The IfcStructuralMember that the load is
+        applied to.
+    :return: The newly created entity based on the ifc_class
+    """
+
+    activity = ifcopenshell.api.root.create_entity(
+        file,
+        ifc_class=ifc_class,
+        predefined_type=predefined_type,
+    )
+    activity.AppliedLoad = applied_load
+    activity.GlobalOrLocal = global_or_local
+
+    rel = ifcopenshell.api.root.create_entity(file, ifc_class="IfcRelConnectsStructuralActivity")
+    rel.RelatingElement = structural_member
+    rel.RelatedStructuralActivity = activity
+    return activity