From 3e1dc563650ee8bf4e264c26f06ff79f3b60f68a Mon Sep 17 00:00:00 2001
From: Campbell Barton <ideasman42@gmail.com>
Date: Tue, 24 Dec 2019 15:56:02 +1100
Subject: Object: 'Affect Only Origins' support for Snapping

---
 source/blender/editors/space_view3d/view3d_snap.c | 43 ++++++++++++++++++++++-
 1 file changed, 42 insertions(+), 1 deletion(-)

(limited to 'source/blender/editors')

diff --git a/source/blender/editors/space_view3d/view3d_snap.c b/source/blender/editors/space_view3d/view3d_snap.c
index 13e6ea5c35a..f13f41779c2 100644
--- a/source/blender/editors/space_view3d/view3d_snap.c
+++ b/source/blender/editors/space_view3d/view3d_snap.c
@@ -184,9 +184,19 @@ static int snap_sel_to_grid_exec(bContext *C, wmOperator *UNUSED(op))
   }
   else {
     /* Object mode. */
+    Main *bmain = CTX_data_main(C);
 
     struct KeyingSet *ks = ANIM_get_keyingset_for_autokeying(scene, ANIM_KS_LOCATION_ID);
 
+    const bool use_transform_data_origin = (scene->toolsettings->transform_flag &
+                                            SCE_XFORM_DATA_ORIGIN);
+    struct XFormObjectData_Container *xds = NULL;
+
+    if (use_transform_data_origin) {
+      BKE_scene_graph_evaluated_ensure(depsgraph, bmain);
+      xds = ED_object_data_xform_container_create();
+    }
+
     FOREACH_SELECTED_EDITABLE_OBJECT_BEGIN (view_layer_eval, v3d, ob_eval) {
       Object *ob = DEG_get_original_object(ob_eval);
       vec[0] = -ob_eval->obmat[3][0] + gridf * floorf(0.5f + ob_eval->obmat[3][0] / gridf);
@@ -213,9 +223,18 @@ static int snap_sel_to_grid_exec(bContext *C, wmOperator *UNUSED(op))
       /* auto-keyframing */
       ED_autokeyframe_object(C, scene, ob, ks);
 
+      if (use_transform_data_origin) {
+        ED_object_data_xform_container_item_ensure(xds, ob);
+      }
+
       DEG_id_tag_update(&ob->id, ID_RECALC_TRANSFORM);
     }
     FOREACH_SELECTED_EDITABLE_OBJECT_END;
+
+    if (use_transform_data_origin) {
+      ED_object_data_xform_container_update_all(xds, bmain, depsgraph);
+      ED_object_data_xform_container_destroy(xds);
+    }
   }
 
   WM_event_add_notifier(C, NC_OBJECT | ND_TRANSFORM, NULL);
@@ -406,6 +425,7 @@ static int snap_selected_to_location(bContext *C,
   else {
     struct KeyingSet *ks = ANIM_get_keyingset_for_autokeying(scene, ANIM_KS_LOCATION_ID);
     Main *bmain = CTX_data_main(C);
+    Depsgraph *depsgraph = CTX_data_depsgraph_pointer(C);
 
     ListBase ctx_data_list;
     CollectionPointerLink *ctx_ob;
@@ -424,6 +444,22 @@ static int snap_selected_to_location(bContext *C,
       ob->flag |= OB_DONE;
     }
 
+    const bool use_transform_data_origin = (scene->toolsettings->transform_flag &
+                                            SCE_XFORM_DATA_ORIGIN);
+    struct XFormObjectData_Container *xds = NULL;
+
+    if (use_transform_data_origin) {
+      BKE_scene_graph_evaluated_ensure(depsgraph, bmain);
+      xds = ED_object_data_xform_container_create();
+
+      /* Initialize the transform data in a separate loop because the depsgraph
+       * may be evaluated while setting the locations. */
+      for (ctx_ob = ctx_data_list.first; ctx_ob; ctx_ob = ctx_ob->next) {
+        ob = ctx_ob->ptr.data;
+        ED_object_data_xform_container_item_ensure(xds, ob);
+      }
+    }
+
     for (ctx_ob = ctx_data_list.first; ctx_ob; ctx_ob = ctx_ob->next) {
       ob = ctx_ob->ptr.data;
 
@@ -444,7 +480,7 @@ static int snap_selected_to_location(bContext *C,
           float originmat[3][3], parentmat[4][4];
           /* Use the evaluated object here because sometimes
            * `ob->parent->runtime.curve_cache` is required. */
-          Depsgraph *depsgraph = CTX_data_ensure_evaluated_depsgraph(C);
+          BKE_scene_graph_evaluated_ensure(depsgraph, bmain);
           Object *ob_eval = DEG_get_evaluated_object(depsgraph, ob);
 
           BKE_object_get_parent_matrix(ob_eval, ob_eval->parent, parentmat);
@@ -470,6 +506,11 @@ static int snap_selected_to_location(bContext *C,
     }
 
     BLI_freelistN(&ctx_data_list);
+
+    if (use_transform_data_origin) {
+      ED_object_data_xform_container_update_all(xds, bmain, depsgraph);
+      ED_object_data_xform_container_destroy(xds);
+    }
   }
 
   WM_event_add_notifier(C, NC_OBJECT | ND_TRANSFORM, NULL);
-- 
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