From 0ca22891bc02e1114a143524f71f39434189c869 Mon Sep 17 00:00:00 2001
From: Jedd Morgan <45512892+JR-Morgan@users.noreply.github.com>
Date: Wed, 10 Dec 2025 10:09:00 +0000
Subject: [PATCH] fallback to cgal (#476)

---
 src/speckleifc/ifc_geometry_processing.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/speckleifc/ifc_geometry_processing.py b/src/speckleifc/ifc_geometry_processing.py
index 8a564b1..d5e5050 100644
--- a/src/speckleifc/ifc_geometry_processing.py
+++ b/src/speckleifc/ifc_geometry_processing.py
@@ -51,4 +51,10 @@ def open_ifc(file_path: str) -> file:
 
 
 def create_geometry_iterator(ifc_file: file | sqlite) -> iterator:
-    return iterator(_create_iterator_settings(), ifc_file, multiprocessing.cpu_count())
+    GEOMETRY_LIBRARY = "hybrid-opencascade-cgal"  # First OCC then fallback to CGAL
+    return iterator(
+        _create_iterator_settings(),
+        ifc_file,
+        multiprocessing.cpu_count(),
+        geometry_library=GEOMETRY_LIBRARY,  # type: ignore
+    )