Make Single User: support object data animation

In addition to _object_ animation, now _object data_ (mesh, curve, ...)
animation can now be made single user as well.

This came up in T89369 and while it is possible to do this via the
Outliner [where all actions have to be selected individually], this
seems to be more convenient to be done from the 3DView.

note: usercount of the action is checked now, if it single-user already,
no copy takes place (same thing could/should be done for
single_object_action_users as well).

note2: obdata is made single user as well (otherwise duplicated actions
will be assigned to the same shared obdata - which does not result in
unique animadata which is what we are after here)

ref. T89369

Maniphest Tasks: T89369

Differential Revision: https://developer.blender.org/D11683

1 files changed, 31 insertions, 2 deletions

diff --git a/source/blender/editors/object/object_relations.c b/source/blender/editors/object/object_relations.c
index 30f75e9a150..d7177eabcba 100644
--- a/source/blender/editors/object/object_relations.c
+++ b/source/blender/editors/object/object_relations.c
@@ -2061,6 +2061,23 @@ static void single_object_action_users(
   FOREACH_OBJECT_FLAG_END;
 }
 
+static void single_objectdata_action_users(
+    Main *bmain, Scene *scene, ViewLayer *view_layer, View3D *v3d, const int flag)
+{
+  FOREACH_OBJECT_FLAG_BEGIN (scene, view_layer, v3d, flag, ob) {
+    if (!ID_IS_LINKED(ob) && ob->data != NULL) {
+      ID *id_obdata = (ID *)ob->data;
+      AnimData *adt = BKE_animdata_from_id(id_obdata);
+      ID *id_act = (ID *)adt->action;
+      if (id_act && id_act->us > 1) {
+        DEG_id_tag_update(&ob->id, ID_RECALC_GEOMETRY);
+        BKE_animdata_copy_id_action(bmain, id_obdata);
+      }
+    }
+  }
+  FOREACH_OBJECT_FLAG_END;
+}
+
 static void single_mat_users(
     Main *bmain, Scene *scene, ViewLayer *view_layer, View3D *v3d, const int flag)
 {
@@ -2643,6 +2660,10 @@ static int make_single_user_exec(bContext *C, wmOperator *op)
     single_object_action_users(bmain, scene, view_layer, v3d, flag);
   }
 
+  if (RNA_boolean_get(op->ptr, "obdata_animation")) {
+    single_objectdata_action_users(bmain, scene, view_layer, v3d, flag);
+  }
+
   BKE_main_id_newptr_and_tag_clear(bmain);
 
   WM_event_add_notifier(C, NC_WINDOW, NULL);
@@ -2684,8 +2705,16 @@ void OBJECT_OT_make_single_user(wmOperatorType *ot)
   RNA_def_boolean(ot->srna, "object", 0, "Object", "Make single user objects");
   RNA_def_boolean(ot->srna, "obdata", 0, "Object Data", "Make single user object data");
   RNA_def_boolean(ot->srna, "material", 0, "Materials", "Make materials local to each data-block");
-  RNA_def_boolean(
-      ot->srna, "animation", 0, "Object Animation", "Make animation data local to each object");
+  RNA_def_boolean(ot->srna,
+                  "animation",
+                  0,
+                  "Object Animation",
+                  "Make object animation data local to each object");
+  RNA_def_boolean(ot->srna,
+                  "obdata_animation",
+                  0,
+                  "Object Data Animation",
+                  "Make object data (mesh, curve etc.) animation data local to each object");
 }
 
 /** \} */