Arch: Small fix in IFC exporter to adapt to post-0.20 changes

src/Mod/Arch/ArchCommands.py

@@ -1122,10 +1122,10 @@ class SurveyTaskPanel:
 def toggleIfcBrepFlag(obj):
     """toggleIfcBrepFlag(obj): toggles the IFC brep flag of the given object, forcing it
     to be exported as brep geometry or not."""
-    if not hasattr(obj,"IfcAttributes"):
-        FreeCAD.Console.PrintMessage(translate("Arch","Object doesn't have settable IFC Attributes"))
+    if not hasattr(obj,"IfcData"):
+        FreeCAD.Console.PrintMessage(translate("Arch","Object doesn't have settable IFCData"))
     else:
-        d = obj.IfcAttributes
+        d = obj.IfcData
         if "FlagForceBrep" in d.keys():
             if d["FlagForceBrep"] == "True":
                 d["FlagForceBrep"] = "False"
@@ -1136,7 +1136,7 @@ def toggleIfcBrepFlag(obj):
         else:
             d["FlagForceBrep"] = "True"
             FreeCAD.Console.PrintMessage(translate("Arch","Enabling Brep force flag of object")+" "+obj.Label+"\n")
-        obj.IfcAttributes = d
+        obj.IfcData = d
 
 
 def makeCompoundFromSelected(objects=None):

src/Mod/Arch/exportIFC.py

@@ -2092,6 +2092,7 @@ def getRepresentation(
             ev = obj.Dir
             l = obj.LengthFwd.Value
             if l:
+                ev = FreeCAD.Vector(ev).normalize() # new since 0.20 - obj.Dir length is ignored
                 ev.multiply(l)
                 ev.multiply(preferences['SCALE_FACTOR'])
             ev = pl.Rotation.inverted().multVec(ev)