you can now add, edit and remove structural load cases

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

@@ -0,0 +1,25 @@
+import ifcopenshell.api
+
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {
+            "name": "Unnamed",
+            "predefined_type": "LOAD_CASE",
+            "action_type": "NOTDEFINED",
+            "action_source": "NOTDEFINED",
+        }
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        load_case = ifcopenshell.api.run(
+            "root.create_entity",
+            self.file,
+            ifc_class="IfcStructuralLoadCase",
+            predefined_type=self.settings["predefined_type"],
+            action_type=self.settings["action_type"],
+            action_source=self.settings["action_source"],
+            name=self.settings["name"],
+        )
+        return load_case

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

@@ -6,6 +6,12 @@ class Data:
     boundary_conditions = {}
     connects_structural_members = {}
 
+    load_cases = {}
+    # load_case_combinations = {}
+    # load_groups = {}
+    # structural_activities = {}
+    # connects_structural_activities = {}
+
     @classmethod
     def purge(cls):
         cls.is_loaded = False
@@ -14,6 +20,7 @@ class Data:
         cls.connections = {}
         cls.boundary_conditions = {}
         cls.connects_structural_members = {}
+        cls.load_cases = {}
 
     @classmethod
     def load(cls, file, product_id=None):
@@ -23,6 +30,7 @@ class Data:
         if product_id:
             return cls.load_structural_connection(product_id)
         cls.load_structural_analysis_models()
+        cls.load_structural_load_cases()
         cls.is_loaded = True
 
     @classmethod
@@ -53,6 +61,27 @@ class Data:
 
             cls.structural_analysis_models[model.id()] = data
 
+    @classmethod
+    def load_structural_load_cases(cls):
+        cls.load_cases = {}
+
+        for case in cls._file.by_type("IfcStructuralLoadCase"):
+            # if case.IsGroupedBy:
+            #     for rel in case.IsGroupedBy:
+            #         for product in rel.RelatedObjects:
+            #             cls.products.setdefault(product.id(), []).append(case.id())
+            data = case.get_info()
+            del data["OwnerHistory"]
+
+            is_grouped_by = []
+            for load_group in case.IsGroupedBy or []:
+                is_grouped_by.append(load_group.id())
+            data["IsGroupedBy"] = is_grouped_by
+
+            cls.load_cases[case.id()] = data
+
+        print(data)
+
     @classmethod
     def load_structural_connection(cls, product_id):
         cls.connections = {}

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

@@ -0,0 +1,10 @@
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {"load_case": None, "attributes": {}}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        for name, value in self.settings["attributes"].items():
+            setattr(self.settings["load_case"], name, value)

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

@@ -0,0 +1,15 @@
+import ifcopenshell.api
+
+
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {"load_case": None}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        # TODO: do a deep purge
+        for rel in self.settings["load_case"].IsGroupedBy or []:
+            self.file.remove(rel)
+        self.file.remove(self.settings["load_case"])