Cleanup: Rename ARegion variables from ar to region

The old convention was easy to confuse with ScrArea.
Part of https://developer.blender.org/T74432.

This is mostly a batch rename with some manual fixing. Only single word
variable names are changed, no prefixed/suffixed names.

Brecht van Lommel and Campbell Barton both gave me a green light for
this convention change.

Also ran clan clang format on affected files.

1 files changed, 6 insertions, 6 deletions

diff --git a/source/blender/editors/mesh/editmesh_add_gizmo.c b/source/blender/editors/mesh/editmesh_add_gizmo.c
index c748560ae1b..e7a99ca9e08 100644
--- a/source/blender/editors/mesh/editmesh_add_gizmo.c
+++ b/source/blender/editors/mesh/editmesh_add_gizmo.c
@@ -69,8 +69,8 @@ static void calc_initial_placement_point_from_view(bContext *C,
 {
 
   Scene *scene = CTX_data_scene(C);
-  ARegion *ar = CTX_wm_region(C);
-  RegionView3D *rv3d = ar->regiondata;
+  ARegion *region = CTX_wm_region(C);
+  RegionView3D *rv3d = region->regiondata;
 
   bool use_mouse_project = true; /* TODO: make optional */
 
@@ -99,7 +99,7 @@ static void calc_initial_placement_point_from_view(bContext *C,
   if (use_mouse_project) {
     float plane[4];
     plane_from_point_normal_v3(plane, cursor_matrix[3], orient_matrix[2]);
-    if (ED_view3d_win_to_3d_on_plane(ar, plane, mval, true, r_location)) {
+    if (ED_view3d_win_to_3d_on_plane(region, plane, mval, true, r_location)) {
       copy_m3_m3(r_rotation, orient_matrix);
       return;
     }
@@ -212,7 +212,7 @@ static void gizmo_mesh_placement_modal_from_setup(const bContext *C, wmGizmoGrou
   /* Start off dragging. */
   {
     wmWindow *win = CTX_wm_window(C);
-    ARegion *ar = CTX_wm_region(C);
+    ARegion *region = CTX_wm_region(C);
     wmGizmo *gz = ggd->cage;
 
     {
@@ -220,8 +220,8 @@ static void gizmo_mesh_placement_modal_from_setup(const bContext *C, wmGizmoGrou
       float location[3];
       calc_initial_placement_point_from_view((bContext *)C,
                                              (float[2]){
-                                                 win->eventstate->x - ar->winrct.xmin,
-                                                 win->eventstate->y - ar->winrct.ymin,
+                                                 win->eventstate->x - region->winrct.xmin,
+                                                 win->eventstate->y - region->winrct.ymin,
                                              },
                                              location,
                                              mat3);