From ea4fb69e4e8005f71e020489c3ea8a51d7673018 Mon Sep 17 00:00:00 2001
From: Yorik van Havre <yorik@uncreated.net>
Date: Wed, 24 Oct 2018 14:22:38 -0300
Subject: [PATCH] Arch: Prevent exporting materials as IFC objects

---
 src/Mod/Arch/importIFC.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Mod/Arch/importIFC.py b/src/Mod/Arch/importIFC.py
index 066cfa99a4..10ef50a963 100644
--- a/src/Mod/Arch/importIFC.py
+++ b/src/Mod/Arch/importIFC.py
@@ -1484,8 +1484,10 @@ def export(exportList,filename):
             if obj.Shape:
                 if obj.Shape.Edges and (not obj.Shape.Faces):
                     annotations.append(obj)
+    # clean objects list of unwanted types
     objectslist = [obj for obj in objectslist if obj not in annotations]
     objectslist = Arch.pruneIncluded(objectslist)
+    objectslist = [obj for obj in objectslist if Draft.getType(obj) not in ["Material","MaterialContainer"]]
     if FULL_PARAMETRIC:
         objectslist = Arch.getAllChildren(objectslist)
     products = {} # { Name: IfcEntity, ... }