You can now add structural connections to members

src/blenderbim/blenderbim/bim/module/structural/operator.py

@@ -11,6 +11,22 @@ class AddStructuralMemberConnection(bpy.types.Operator):
     bl_label = "Add Structural Member Connection"
 
     def execute(self, context):
+        obj = bpy.context.active_object
+        oprops = obj.BIMObjectProperties
+        props = obj.BIMStructuralProperties
+        file = IfcStore.get_file()
+        related_structural_connection = file.by_id(oprops.ifc_definition_id)
+        relating_structural_member = file.by_id(props.relating_structural_member.BIMObjectProperties.ifc_definition_id)
+        if not relating_structural_member.is_a("IfcStructuralMember"):
+            return {"FINISHED"}
+        ifcopenshell.api.run(
+            "structural.add_structural_member_connection",
+            file,
+            relating_structural_member=relating_structural_member,
+            related_structural_connection=related_structural_connection,
+        )
+        props.relating_structural_member = None
+        Data.load(IfcStore.get_file(), related_structural_connection.id())
         return {"FINISHED"}
 
 

src/blenderbim/blenderbim/bim/module/structural/prop.py

@@ -32,3 +32,4 @@ class BIMObjectStructuralProperties(PropertyGroup):
     boundary_condition_attributes: CollectionProperty(name="Boundary Condition Attributes", type=Attribute)
     active_boundary_condition: IntProperty(name="Active Boundary Condition")
     active_connects_structural_member: IntProperty(name="Active Connects Structural Member")
+    relating_structural_member: PointerProperty(name="Relating Structural Member", type=bpy.types.Object)

src/blenderbim/blenderbim/bim/module/structural/ui.py

@@ -115,13 +115,13 @@ class BIM_PT_connected_structural_members(Panel):
         rel_ids = Data.connections[self.oprops.ifc_definition_id]["ConnectsStructuralMembers"]
 
         row = self.layout.row(align=True)
-        row.label(text=f"{len(rel_ids)} Connected Structural Members", icon="CON_TRACKTO")
+        row.prop(self.props, "relating_structural_member", text="", icon="CON_TRACKTO")
         row.operator("bim.add_structural_member_connection", text="", icon="ADD")
 
         for rel_id in rel_ids:
             rel = Data.connects_structural_members[rel_id]
             row = self.layout.row(align=True)
-            row.label(text=f"To Member #{rel['RelatingStructuralMember']}")
+            row.label(text=f"To Member #{IfcStore.get_file().by_id(rel['RelatingStructuralMember']).Name}")
             if self.props.active_connects_structural_member and self.props.active_connects_structural_member == rel_id:
                 row.operator("bim.disable_editing_structural_connection_condition", text="", icon="CHECKMARK")
                 row.enabled = self.props.active_boundary_condition != rel["AppliedCondition"]

src/ifcopenshell-python/ifcopenshell/api/structural/add_structural_analysis_model.py

@@ -10,9 +10,6 @@ class Usecase:
             self.settings[key] = value
 
     def execute(self):
-        return self.file.create_entity("IfcStructuralAnalysisModel", **{
+        return ifcopenshell.api.run(
-            "GlobalId": ifcopenshell.guid.new(),
+            "root.create_entity", self.file, ifc_class="IfcStructuralAnalysisModel", predefined_type="LOADING_3D"
-            "OwnerHistory": ifcopenshell.api.run("owner.create_owner_history", self.file),
+        )
-            "Name": "Unnamed",
-            "PredefinedType": "LOADING_3D"
-        })

src/ifcopenshell-python/ifcopenshell/api/structural/add_structural_member_connection.py

@@ -0,0 +1,19 @@
+import ifcopenshell
+import ifcopenshell.api
+
+
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {"relating_structural_member": None, "related_structural_connection": None}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        for connection in self.settings["related_structural_connection"].ConnectsStructuralMembers or []:
+            if connection.RelatingStructuralMember == self.settings["relating_structural_member"]:
+                return
+        rel = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcRelConnectsStructuralMember")
+        rel.RelatingStructuralMember = self.settings["relating_structural_member"]
+        rel.RelatedStructuralConnection = self.settings["related_structural_connection"]
+        return rel

src/ifcopenshell-python/ifcopenshell/api/structural/data.py

@@ -49,7 +49,7 @@ class Data:
                 has_results.append(result_group.id())
             data["HasResults"] = has_results
 
-            data["SharedPlacement"] = model.SharedPlacement.id()
+            data["SharedPlacement"] = model.SharedPlacement.id() if model.SharedPlacement else None
 
             cls.structural_analysis_models[model.id()] = data