Fix bug where only a light removal occured when removing elements. Now, a full geometry purge is done as well.

src/ifcblenderexport/blenderbim/bim/module/geometry/data.py

@@ -24,7 +24,7 @@ class Data:
             else:
                 representations = []
         elif product.is_a("IfcTypeProduct"):
-            representations = [rm.MappedRepresentation for rm in product.RepresentationMaps]
+            representations = [rm.MappedRepresentation for rm in product.RepresentationMaps or []]
         for representation in representations:
             c = representation.ContextOfItems
             rep_id = int(representation.id())

src/ifcblenderexport/blenderbim/bim/module/geometry/operator.py

@@ -230,8 +230,7 @@ class RemoveRepresentation(bpy.types.Operator):
                 bpy.data.meshes.remove(mesh)
         product = self.file.by_id(obj.BIMObjectProperties.ifc_definition_id)
         unassign_representation.Usecase(self.file, {"product": product, "representation": representation}).execute()
-        if not is_mapped_representation:
+        remove_representation.Usecase(self.file, {"representation": representation}).execute()
-            remove_representation.Usecase(self.file, {"representation": representation}).execute()
         Data.load(product.id())
         return {"FINISHED"}
 

src/ifcblenderexport/blenderbim/bim/module/root/operator.py

@@ -7,6 +7,7 @@ import blenderbim.bim.module.root.create_product as create_product
 import blenderbim.bim.module.root.remove_product as remove_product
 import blenderbim.bim.module.root.reassign_class as reassign_class
 import blenderbim.bim.module.root.copy_class as copy_class
+from blenderbim.bim.module.geometry.data import Data as GeometryData
 from blenderbim.bim.ifc import IfcStore
 
 
@@ -178,6 +179,7 @@ class UnassignClass(bpy.types.Operator):
             if not obj.BIMObjectProperties.ifc_definition_id:
                 continue
             product = self.file.by_id(obj.BIMObjectProperties.ifc_definition_id)
+            self.remove_representations(obj, product)
             IfcStore.unlink_element(product, obj)
             usecase = remove_product.Usecase(
                 self.file,
@@ -188,6 +190,11 @@ class UnassignClass(bpy.types.Operator):
                 obj.name = "/".join(obj.name.split("/")[1:])
         return {"FINISHED"}
 
+    def remove_representations(self, obj, product):
+        GeometryData.load(product.id())
+        for representation_id in GeometryData.products[product.id()]:
+            bpy.ops.bim.remove_representation(obj=obj.name, representation_id=representation_id)
+
 
 class UnlinkObject(bpy.types.Operator):
     bl_idname = "bim.unlink_object"