Block.face_normal
- Block.face_normal(fkey, unitized=True)
 Compute the normal of a face.
- Parameters:
 - fkeyint
 The identifier of the face.
- unitizedbool, optional
 If True, the vector is unitized.
- Returns:
 
Compute the normal of a face.
The identifier of the face.
If True, the vector is unitized.