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, 3 insertions, 3 deletions

diff --git a/source/blender/editors/transform/transform_constraints.c b/source/blender/editors/transform/transform_constraints.c
index 5bcc1387a1b..1db2ffa0ed4 100644
--- a/source/blender/editors/transform/transform_constraints.c
+++ b/source/blender/editors/transform/transform_constraints.c
@@ -846,8 +846,8 @@ void drawPropCircle(const struct bContext *C, TransInfo *t)
     }
     else if (ELEM(t->spacetype, SPACE_GRAPH, SPACE_ACTION)) {
       /* only scale y */
-      rcti *mask = &t->ar->v2d.mask;
-      rctf *datamask = &t->ar->v2d.cur;
+      rcti *mask = &t->region->v2d.mask;
+      rctf *datamask = &t->region->v2d.cur;
       float xsize = BLI_rctf_size_x(datamask);
       float ysize = BLI_rctf_size_y(datamask);
       float xmask = BLI_rcti_size_x(mask);
@@ -1055,7 +1055,7 @@ static void setNearestAxis3d(TransInfo *t)
    * projecting them with ED_view3d_win_to_delta and then get the length of that vector.
    */
   zfac = mul_project_m4_v3_zfac(t->persmat, t->center_global);
-  zfac = len_v3(t->persinv[0]) * 2.0f / t->ar->winx * zfac * 30.0f;
+  zfac = len_v3(t->persinv[0]) * 2.0f / t->region->winx * zfac * 30.0f;
 
   for (i = 0; i < 3; i++) {
     float axis[3], axis_2d[2];