Fallback to add_representation for mesh curves #5870 (after 42f32e3)

src/bonsai/bonsai/bim/module/root/operator.py

@@ -211,6 +211,12 @@ class AssignClass(bpy.types.Operator, tool.Ifc.Operator):
                 )
                 continue
 
+            should_add_representation = self.should_add_representation
+            export_mesh_to_tesselation = False
+            if self.should_add_representation and isinstance(obj.data, bpy.types.Mesh) and obj.data.polygons:
+                should_add_representation = False
+                export_mesh_to_tesselation = True
+
             element = core.assign_class(
                 tool.Ifc,
                 tool.Collector,
@@ -218,11 +224,12 @@ class AssignClass(bpy.types.Operator, tool.Ifc.Operator):
                 obj=obj,
                 ifc_class=ifc_class,
                 predefined_type=predefined_type,
-                should_add_representation=False,
+                should_add_representation=should_add_representation,
                 context=ifc_context,
                 ifc_representation_class=self.ifc_representation_class,
             )
-            if self.should_add_representation and obj.data and len(obj.data.vertices):
+
+            if export_mesh_to_tesselation:
                 representation = tool.Geometry.export_mesh_to_tessellation(obj, ifc_context)
                 ifcopenshell.api.geometry.assign_representation(tool.Ifc.get(), element, representation)
                 bonsai.core.geometry.switch_representation(

src/bonsai/bonsai/tool/geometry.py

@@ -1719,7 +1719,9 @@ class Geometry(bonsai.core.tool.Geometry):
         data["ios_item_ids"] = [i["item"].id() for i in ifcopenshell.util.representation.resolve_items(representation)]
 
     @classmethod
-    def export_mesh_to_tessellation(cls, obj: bpy.types.Object, ifc_context) -> ifcopenshell.entity_instance:
+    def export_mesh_to_tessellation(
+        cls, obj: bpy.types.Object, ifc_context: ifcopenshell.entity_instance
+    ) -> ifcopenshell.entity_instance:
         builder = ifcopenshell.util.shape_builder.ShapeBuilder(tool.Ifc.get())
         unit_scale = ifcopenshell.util.unit.calculate_unit_scale(tool.Ifc.get())
         items = []