Arch: New multicore IFC importer

src/Mod/Arch/ArchBuildingPart.py

@@ -461,7 +461,7 @@ class BuildingPart(ArchIFC.IfcProduct):
         return g
 
     def touchChildren(self,obj):
-        
+
         "Touches all descendents where applicable"
 
         for child in obj.Group:
@@ -472,6 +472,15 @@ class BuildingPart(ArchIFC.IfcProduct):
             elif Draft.getType(child) in ["Group","BuildingPart"]:
                 self.touchChildren(child)
 
+    def addObject(self,obj,child):
+
+        "Adds an object to the group of this BuildingPart"
+
+        if not child in obj.Group:
+            g = obj.Group
+            g.append(child)
+            obj.Group = g
+
 
 class ViewProviderBuildingPart: