Keep placement axes recalculating profiles #3879

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

@@ -449,6 +449,16 @@ class DumbProfileJoiner:
                     "geometry.assign_representation", tool.Ifc.get(), product=element, representation=new_axis
                 )
 
+        def get_placement_axes(body_representation):
+            if not body_representation:
+                return None, None
+            extrusion = tool.Model.get_extrusion(body_representation)
+            if not extrusion:
+                return None, None
+            position = extrusion.Position
+            return (position.Axis.DirectionRatios, position.RefDirection.DirectionRatios)
+
+        old_body = ifcopenshell.util.representation.get_representation(element, "Model", "Body", "MODEL_VIEW")
         new_body = ifcopenshell.api.run(
             "geometry.add_profile_representation",
             tool.Ifc.get(),
@@ -457,9 +467,9 @@ class DumbProfileJoiner:
             depth=depth,
             cardinal_point=usage.CardinalPoint if usage else None,
             clippings=self.clippings,
+            placement_zx_axes=get_placement_axes(old_body),
         )
 
-        old_body = ifcopenshell.util.representation.get_representation(element, "Model", "Body", "MODEL_VIEW")
         if old_body:
             for inverse in tool.Ifc.get().get_inverse(old_body):
                 ifcopenshell.util.element.replace_attribute(inverse, old_body, new_body)

src/ifcopenshell-python/ifcopenshell/api/geometry/add_profile_representation.py

@@ -31,6 +31,7 @@ class Usecase:
             # Planes are defined as a matrix. The XY plane is the clipping boundary and +Z is removed.
             # [{"type": "IfcBooleanClippingResult", "operand_type": "IfcHalfSpaceSolid", "matrix": [...]}, {...}]
             "clippings": [],  # A list of planes that define clipping half space solids
+            "placement_zx_axes": (None, None),
         }
         for key, value in settings.items():
             self.settings[key] = value
@@ -46,13 +47,14 @@ class Usecase:
 
     def create_item(self):
         point = self.get_point()
+        placement = self.file.createIfcAxis2Placement3D(
+            point,
+            self.file.createIfcDirection(self.settings["placement_zx_axes"][0] or (0.0, 0.0, 1.0)),
+            self.file.createIfcDirection(self.settings["placement_zx_axes"][1] or (1.0, 0.0, 0.0)),
+        )
         extrusion = self.file.createIfcExtrudedAreaSolid(
             self.settings["profile"],
-            self.file.createIfcAxis2Placement3D(
-                point,
-                self.file.createIfcDirection((0.0, 0.0, 1.0)),
-                self.file.createIfcDirection((1.0, 0.0, 0.0)),
-            ),
+            placement,
             self.file.createIfcDirection((0.0, 0.0, 1.0)),
             self.convert_si_to_unit(self.settings["depth"]),
         )