x1:=(C+L+H)/3;
bb13:=atan(ema(x1,13)-ref(ema(x1,13),1))*3.1416*10;
DRAWTEXT(filter(bb13>1 and ema(x1,13)>ref(ema(x1,8),1),10),(LOW),'↑'),color009999;
DRAWTEXT(filter(bb13>1 and ema(x1,13)>ref(ema(x1,8),1),10),(LOW)*(0.98),'∠45°'),color0

这个是大智慧∠45°

请给我改成有u型的线

先谢谢