fix: fix maximum recursion depth exceeded error when smart duplicatin…

…g an object with cylic utils

lib/objects.py

@@ -158,20 +158,25 @@ def is_planar(bm, tolerance=0.0001):
     return True
 
 
-def get_all_util_objects(objs):
-    utils = set(())
+def get_all_util_objects(base_objs, utils=None):
+    if utils is None:
+        utils = set(())
 
-    for obj in objs:
+    new_utils = set(())
+    for obj in base_objs:
         if not obj.type in {'MESH', 'CURVE'}:
             continue
 
-        utils.update([mod.object for mod in obj.modifiers if mod.type == 'BOOLEAN' and mod.object])
-        utils.update([mod.offset_object for mod in obj.modifiers if mod.type == 'ARRAY' and mod.use_object_offset and mod.offset_object])
-        utils.update([mod.mirror_object for mod in obj.modifiers if mod.type == 'MIRROR' and mod.mirror_object])
+        new_utils.update([mod.object for mod in obj.modifiers if mod.type == 'BOOLEAN' and mod.object])
+        new_utils.update([mod.offset_object for mod in obj.modifiers if mod.type == 'ARRAY' and mod.use_object_offset and mod.offset_object])
+        new_utils.update([mod.mirror_object for mod in obj.modifiers if mod.type == 'MIRROR' and mod.mirror_object])
 
-    if len(utils) > 0:
+    diff_utils = new_utils.difference(utils)
+    utils.update(new_utils)
+
+    if len(diff_utils) > 0:
         # Recursively get all composited utils.
-        utils.update(get_all_util_objects(list(utils)))
+        utils.update(get_all_util_objects(diff_utils, utils))
 
     return list(utils)