fix [#34851] "UnitSettings.scale_length" not beeing calculated the same way for all objects

release/scripts/modules/bpy_extras/object_utils.py

@@ -22,6 +22,9 @@ __all__ = (
     "add_object_align_init",
     "object_data_add",
     "AddObjectHelper",
+    "object_add_grid_scale",
+    "object_add_grid_scale_apply_operator",
+    "object_image_guess",
     )
 
 
@@ -210,6 +213,21 @@ def object_add_grid_scale(context):
     return 1.0
 
 
+def object_add_grid_scale_apply_operator(operator, context):
+    """
+    Scale an operators distance values by the grid size.
+    """
+    grid_scale = object_add_grid_scale(context)
+
+    properties = operator.properties
+    properties_def = properties.bl_rna.properties
+    for prop_id in properties_def.keys():
+        if not properties.is_property_set(prop_id):
+            prop_def = properties_def[prop_id]
+            if prop_def.unit == 'LENGTH' and prop_def.subtype == 'DISTANCE':
+                setattr(operator, prop_id, getattr(operator, prop_id) * grid_scale)
+
+
 def object_image_guess(obj, bm=None):
     """
     Return a single image used by the object,