101     lv_value_precise_t old_delta = arc->indic_angle_end - arc->indic_angle_start;  in lv_arc_set_start_angle()  local
104     if(old_delta < 0) old_delta = 360 + old_delta;  in lv_arc_set_start_angle()
107     if(LV_ABS(new_delta - old_delta) > 180)  lv_obj_invalidate(obj);  in lv_arc_set_start_angle()
108 …else if(new_delta < old_delta) inv_arc_area(obj, arc->indic_angle_start, start, LV_PART_INDICATOR);  in lv_arc_set_start_angle()
109 …else if(old_delta < new_delta) inv_arc_area(obj, start, arc->indic_angle_start, LV_PART_INDICATOR);  in lv_arc_set_start_angle()
124     lv_value_precise_t old_delta = arc->indic_angle_end - arc->indic_angle_start;  in lv_arc_set_end_angle()  local
127     if(old_delta < 0) old_delta = 360 + old_delta;  in lv_arc_set_end_angle()
130     if(LV_ABS(new_delta - old_delta) > 180)  lv_obj_invalidate(obj);  in lv_arc_set_end_angle()
131     else if(new_delta < old_delta) inv_arc_area(obj, end, arc->indic_angle_end, LV_PART_INDICATOR);  in lv_arc_set_end_angle()
132     else if(old_delta < new_delta) inv_arc_area(obj, arc->indic_angle_end, end, LV_PART_INDICATOR);  in lv_arc_set_end_angle()
154     lv_value_precise_t old_delta = arc->bg_angle_end - arc->bg_angle_start;  in lv_arc_set_bg_start_angle()  local
157     if(old_delta < 0) old_delta = 360 + old_delta;  in lv_arc_set_bg_start_angle()
160     if(LV_ABS(new_delta - old_delta) > 180)  lv_obj_invalidate(obj);  in lv_arc_set_bg_start_angle()
161     else if(new_delta < old_delta) inv_arc_area(obj, arc->bg_angle_start, start, LV_PART_MAIN);  in lv_arc_set_bg_start_angle()
162     else if(old_delta < new_delta) inv_arc_area(obj, start, arc->bg_angle_start, LV_PART_MAIN);  in lv_arc_set_bg_start_angle()
176     lv_value_precise_t old_delta = arc->bg_angle_end - arc->bg_angle_start;  in lv_arc_set_bg_end_angle()  local
179     if(old_delta < 0) old_delta = 360 + old_delta;  in lv_arc_set_bg_end_angle()
182     if(LV_ABS(new_delta - old_delta) > 180)  lv_obj_invalidate(obj);  in lv_arc_set_bg_end_angle()
183     else if(new_delta < old_delta) inv_arc_area(obj, end, arc->bg_angle_end, LV_PART_MAIN);  in lv_arc_set_bg_end_angle()
184     else if(old_delta < new_delta) inv_arc_area(obj, arc->bg_angle_end, end, LV_PART_MAIN);  in lv_arc_set_bg_end_angle()