- IfcGeom: Major performance improvement by only sewing faces of IfcConnectedFaceSets when needed for boolean operations

- Automatic tests for several well known IFC files on the Internet
- IfcBlender: Make visibility in render consistent with 3d view
- Some compatibility for Ifc2x files with IfcShapeRepresentations and RepresentationIdentifier 'IAI'

src/ifcblender/io_import_scene_ifc/__init__.py

@@ -78,6 +78,7 @@ def import_ifc(filename, use_names, process_relations):
     else:
         valid_file = IfcImport.Init(filename)
     if not valid_file:
+        IfcImport.CleanUp()
         return False
     print("Done reading file")
     id_to_object = {}
@@ -136,6 +137,7 @@ def import_ifc(filename, use_names, process_relations):
             ob.id, ob_guid, ob_name, ob_type
 
         bob.hide = ob_type == 'IfcSpace' or ob_type == 'IfcOpeningElement'
+        bob.hide_render = bob.hide
         
         if ob.id not in id_to_object: id_to_object[ob.id] = []
         id_to_object[ob.id].append(bob)