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, 4 insertions, 4 deletions

diff --git a/source/blender/editors/sculpt_paint/paint_intern.h b/source/blender/editors/sculpt_paint/paint_intern.h
index 2fe585aa9ea..018d7f72bb6 100644
--- a/source/blender/editors/sculpt_paint/paint_intern.h
+++ b/source/blender/editors/sculpt_paint/paint_intern.h
@@ -174,7 +174,7 @@ struct VertProjHandle *ED_vpaint_proj_handle_create(struct Depsgraph *depsgraph,
 void ED_vpaint_proj_handle_update(struct Depsgraph *depsgraph,
                                   struct VertProjHandle *vp_handle,
                                   /* runtime vars */
-                                  struct ARegion *ar,
+                                  struct ARegion *region,
                                   const float mval_fl[2]);
 void ED_vpaint_proj_handle_free(struct VertProjHandle *vp_handle);
 
@@ -261,7 +261,7 @@ void SCULPT_OT_uv_sculpt_stroke(struct wmOperatorType *ot);
 bool paint_convert_bb_to_rect(struct rcti *rect,
                               const float bb_min[3],
                               const float bb_max[3],
-                              const struct ARegion *ar,
+                              const struct ARegion *region,
                               struct RegionView3D *rv3d,
                               struct Object *ob);
 
@@ -269,7 +269,7 @@ bool paint_convert_bb_to_rect(struct rcti *rect,
  * screen_rect from screen into object-space (essentially converting a
  * 2D screens-space bounding box into four 3D planes) */
 void paint_calc_redraw_planes(float planes[4][4],
-                              const struct ARegion *ar,
+                              const struct ARegion *region,
                               struct Object *ob,
                               const struct rcti *screen_rect);
 
@@ -288,7 +288,7 @@ void paint_get_tex_pixel_col(const struct MTex *mtex,
                              struct ColorSpace *colorspace);
 
 void paint_sample_color(
-    struct bContext *C, struct ARegion *ar, int x, int y, bool texpaint_proj, bool palette);
+    struct bContext *C, struct ARegion *region, int x, int y, bool texpaint_proj, bool palette);
 
 void paint_stroke_operator_properties(struct wmOperatorType *ot);