102     lv_value_precise_t new_delta = arc->indic_angle_end - start;  in lv_arc_set_start_angle()  local
105     if(new_delta < 0) new_delta = 360 + new_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()
125     lv_value_precise_t new_delta = end - arc->indic_angle_start;  in lv_arc_set_end_angle()  local
128     if(new_delta < 0) new_delta = 360 + new_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()
155     lv_value_precise_t new_delta = arc->bg_angle_end - start;  in lv_arc_set_bg_start_angle()  local
158     if(new_delta < 0) new_delta = 360 + new_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()
177     lv_value_precise_t new_delta = end - arc->bg_angle_start;  in lv_arc_set_bg_end_angle()  local
180     if(new_delta < 0) new_delta = 360 + new_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()