You can now set cardinal point on creation and bulk change for profile elements

src/blenderbim/blenderbim/bim/module/model/profile.py

@@ -113,6 +113,7 @@ class DumbProfileGenerator:
         self.depth = 3
         self.rotation = 0
         self.location = Vector((0, 0, 0))
+        self.cardinal_point = int(bpy.context.scene.BIMModelProperties.cardinal_point)
         return self.derive_from_cursor()
 
     def derive_from_cursor(self):
@@ -141,6 +142,9 @@ class DumbProfileGenerator:
             context=self.body_context,
         )
         ifcopenshell.api.run("type.assign_type", self.file, related_object=element, relating_type=self.relating_type)
+        material = ifcopenshell.util.element.get_material(element)
+        material.CardinalPoint = self.cardinal_point
+
         if self.relating_type.is_a() in ["IfcBeamType", "IfcMemberType"]:
             obj.rotation_euler[0] = math.pi / 2
             obj.rotation_euler[2] = math.pi / 2
@@ -161,6 +165,7 @@ class DumbProfileGenerator:
             tool.Ifc.get(),
             context=self.body_context,
             profile=self.profile_set.CompositeProfile or self.profile_set.MaterialProfiles[0].Profile,
+            cardinal_point=self.cardinal_point,
             depth=self.depth,
         )
         ifcopenshell.api.run(
@@ -917,3 +922,27 @@ class ChangeProfileDepth(bpy.types.Operator):
         for obj in context.selected_objects:
             joiner.set_depth(obj, self.depth)
         return {"FINISHED"}
+
+
+class ChangeCardinalPoint(bpy.types.Operator):
+    bl_idname = "bim.change_cardinal_point"
+    bl_label = "Change Cardinal Point"
+    bl_options = {"REGISTER", "UNDO"}
+    cardinal_point: bpy.props.IntProperty()
+
+    @classmethod
+    def poll(cls, context):
+        return context.selected_objects
+
+    def execute(self, context):
+        objs = []
+        for obj in context.selected_objects:
+            element = tool.Ifc.get_entity(obj)
+            if not element:
+                continue
+            material = ifcopenshell.util.element.get_material(element, should_skip_usage=False)
+            if material.is_a("IfcMaterialProfileSetUsage"):
+                material.CardinalPoint = self.cardinal_point
+                objs.append(obj)
+        DumbProfileRecalculator().recalculate(objs)
+        return {"FINISHED"}

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

@@ -121,6 +121,32 @@ class BIMModelProperties(PropertyGroup):
     occurrence_name_function: bpy.props.StringProperty(name="Occurrence Name Function")
     getter_enum = {"ifc_class": get_ifc_class, "relating_type": get_relating_type}
     extrusion_depth: bpy.props.FloatProperty(default=42.0)
+    cardinal_point: bpy.props.EnumProperty(
+        items=(
+            # TODO: complain to buildingSMART
+            ("1", "bottom left", ""),
+            ("2", "bottom centre", ""),
+            ("3", "bottom right", ""),
+            ("4", "mid-depth left", ""),
+            ("5", "mid-depth centre", ""),
+            ("6", "mid-depth right", ""),
+            ("7", "top left", ""),
+            ("8", "top centre", ""),
+            ("9", "top right", ""),
+            ("10", "geometric centroid", ""),
+            ("11", "bottom in line with the geometric centroid", ""),
+            ("12", "left in line with the geometric centroid", ""),
+            ("13", "right in line with the geometric centroid", ""),
+            ("14", "top in line with the geometric centroid", ""),
+            ("15", "shear centre", ""),
+            ("16", "bottom in line with the shear centre", ""),
+            ("17", "left in line with the shear centre", ""),
+            ("18", "right in line with the shear centre", ""),
+            ("19", "top in line with the shear centre", ""),
+        ),
+        name="Cardinal Point",
+        default="5",
+    )
     length: bpy.props.FloatProperty(default=42.0)
 
 

src/blenderbim/blenderbim/bim/module/model/workspace.py

@@ -179,6 +179,11 @@ class BimTool(WorkSpaceTool):
                 row.operator("bim.hotkey", text="Split").hotkey = "S_S"
 
             if ifc_class in ("IfcColumnType", "IfcBeamType", "IfcMemberType"):
+                row = layout.row(align=True)
+                row.prop(data=props, property="cardinal_point", text="Axis")
+                op = row.operator("bim.change_cardinal_point", icon="FILE_REFRESH", text="")
+                op.cardinal_point = int(props.cardinal_point)
+
                 row = layout.row(align=True)
                 label = "Height" if ifc_class == "IfcColumnType" else "Length"
                 row.prop(data=props, property="extrusion_depth", text=label)