Fix #4227. Add shapely as an optional dependency for IOS-Python

src/ifcopenshell-python/ifcopenshell/util/shape.py

@@ -217,7 +217,8 @@ def get_edges(geometry):
 def get_faces(geometry):
     """Get all the faces as a numpy array
 
-    Faces are always triangulated.
+    Faces are always triangulated. If the shape is a BRep and you want to get
+    the original untriangulated output, refer to ``get_edges``.
 
     Results are a nested numpy array e.g. [[f1v1, f1v2, f1v3], [f2v1, f2v2, f2v3], ...]
 

src/ifcopenshell-python/pyproject.toml

@@ -15,7 +15,7 @@ classifiers = [
     "License :: OSI Approved :: GNU Lesser General Public License v3 or later (LGPLv3+)",
 ]
 [project.optional-dependencies]
-geometry = ["mathutils"]
+geometry = ["mathutils", "shapely"]
 date = ["isodate"]
 [project.urls]
 "Homepage" = "http://ifcopenshell.org"