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, 9 insertions, 9 deletions

diff --git a/source/blender/editors/sculpt_paint/paint_vertex_weight_ops.c b/source/blender/editors/sculpt_paint/paint_vertex_weight_ops.c
index 0d4fcd3e87d..4b8990c1b5d 100644
--- a/source/blender/editors/sculpt_paint/paint_vertex_weight_ops.c
+++ b/source/blender/editors/sculpt_paint/paint_vertex_weight_ops.c
@@ -318,8 +318,8 @@ static const EnumPropertyItem *weight_paint_sample_enum_itemf(bContext *C,
         uint index;
 
         const int mval[2] = {
-            win->eventstate->x - vc.ar->winrct.xmin,
-            win->eventstate->y - vc.ar->winrct.ymin,
+            win->eventstate->x - vc.region->winrct.xmin,
+            win->eventstate->y - vc.region->winrct.ymin,
         };
 
         view3d_operator_needs_opengl(C);
@@ -563,7 +563,7 @@ typedef struct WPGradient_vertStoreBase {
 } WPGradient_vertStoreBase;
 
 typedef struct WPGradient_userData {
-  struct ARegion *ar;
+  struct ARegion *region;
   Scene *scene;
   Mesh *me;
   Brush *brush;
@@ -671,7 +671,7 @@ static void gradientVertInit__mapFunc(void *userData,
   }
 
   if (ED_view3d_project_float_object(
-          grad_data->ar, co, vs->sco, V3D_PROJ_TEST_CLIP_BB | V3D_PROJ_TEST_CLIP_NEAR) !=
+          grad_data->region, co, vs->sco, V3D_PROJ_TEST_CLIP_BB | V3D_PROJ_TEST_CLIP_NEAR) !=
       V3D_PROJ_RET_OK) {
     copy_v2_fl(vs->sco, FLT_MAX);
     return;
@@ -733,7 +733,7 @@ static int paint_weight_gradient_exec(bContext *C, wmOperator *op)
 {
   wmGesture *gesture = op->customdata;
   WPGradient_vertStoreBase *vert_cache;
-  struct ARegion *ar = CTX_wm_region(C);
+  struct ARegion *region = CTX_wm_region(C);
   Scene *scene = CTX_data_scene(C);
   Object *ob = CTX_data_active_object(C);
   Mesh *me = ob->data;
@@ -778,7 +778,7 @@ static int paint_weight_gradient_exec(bContext *C, wmOperator *op)
         sizeof(WPGradient_vertStoreBase) + (sizeof(WPGradient_vertStore) * me->totvert), __func__);
   }
 
-  data.ar = ar;
+  data.region = region;
   data.scene = scene;
   data.me = ob->data;
   data.sco_start = sco_start;
@@ -801,7 +801,7 @@ static int paint_weight_gradient_exec(bContext *C, wmOperator *op)
     data.weightpaint = BKE_brush_weight_get(scene, brush);
   }
 
-  ED_view3d_init_mats_rv3d(ob, ar->regiondata);
+  ED_view3d_init_mats_rv3d(ob, region->regiondata);
 
   Scene *scene_eval = DEG_get_evaluated_scene(depsgraph);
   Object *ob_eval = DEG_get_evaluated_object(depsgraph, ob);
@@ -843,8 +843,8 @@ static int paint_weight_gradient_invoke(bContext *C, wmOperator *op, const wmEve
 
   ret = WM_gesture_straightline_invoke(C, op, event);
   if (ret & OPERATOR_RUNNING_MODAL) {
-    struct ARegion *ar = CTX_wm_region(C);
-    if (ar->regiontype == RGN_TYPE_WINDOW) {
+    struct ARegion *region = CTX_wm_region(C);
+    if (region->regiontype == RGN_TYPE_WINDOW) {
       /* TODO, hardcoded, extend WM_gesture_straightline_ */
       if (event->type == LEFTMOUSE && event->val == KM_PRESS) {
         wmGesture *gesture = op->customdata;