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{  KDJ VOL V3.1 - B/S高对比版                          }
{ [B?]=买入观察，[B]=买入确认；[S?]=下跌观察，[S]=下跌确认   }
{ 仅借用缠论视觉标记，不代表严格缠论一二三买卖点            }
{ 只使用当前及历史K线，不使用未来函数                       }
{ 默认参数仅按日K设计；周K和分钟K不能直接套用                }
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{一、参数}
N:=21;
COOL_DOT:=5;
COOL_BUY:=8;
COOL_TOP:=5;
COOL_SELL:=8;
RECENT_N:=12;
VOL_MIN:=0.90;

{二、KDJ位置与拐点}
RANGE_N:=MAX(HHV(H,N)-LLV(L,N),0.01);
RSV:=(C-LLV(L,N))/RANGE_N*100;
K_VAL:=SMA(RSV,3,1);
D_VAL:=SMA(K_VAL,3,1);
J_VAL:=3*K_VAL-2*D_VAL;
J_SAFE:=MAX(MIN(J_VAL,110),-10);

{三、量价资金代理；不是交易所披露的真实主力资金}
BAR_RANGE:=MAX(H-L,0.01);
MFM:=((C-L)-(H-C))/BAR_RANGE;
RVOL_RAW:=V/MAX(MA(V,20),1);
RVOL_CAP:=MIN(RVOL_RAW,2.50);
FLOW:=EMA(MFM*RVOL_CAP*100,5);

{四、零轴动能；限制极端J值和异常量比对柱体的冲击}
POWER:=EMA((J_SAFE-50)*0.70+FLOW*0.30,3);
POWER_MA:=EMA(POWER,5);

{五、柱体显示}
DOWN_POWER:IF(POWER<0,POWER,0),STICK,COLORCYAN;
RECOVERING:IF(POWER<0 AND POWER>REF(POWER,1),POWER,0),STICK,COLORWHITE;
UP_POWER:IF(POWER>=0,POWER,0),STICK,COLORRED;
SIGNAL_LINE:POWER_MA,COLORYELLOW,LINETHICK2;
ZERO_LINE:0,DOTLINE,COLORGRAY;

{六、白点信号：仍在超跌区内，只代表衰竭预警}
OVERSOLD:=J_VAL<15 OR K_VAL<20;
EXHAUST:=POWER<0 AND POWER>REF(POWER,1) AND REF(POWER,1)<=REF(POWER,2);
J_TURN:=J_VAL>REF(J_VAL,1);
PRICE_TURN:=C>REF(C,1) AND C>=L+(H-L)*0.55;
DOT_RAW:=OVERSOLD AND EXHAUST AND J_TURN AND PRICE_TURN;
WHITE_DOT:=FILTER(DOT_RAW,COOL_DOT);

{七、笑脸严格确认：超跌后金叉，并通过趋势、突破、量能门槛}
EMA5_VAL:=EMA(C,5);
EMA20_VAL:=EMA(C,20);
RECENT_OVERSOLD:=BARSLAST(OVERSOLD)<=RECENT_N;
KDJ_GOLD:=CROSS(K_VAL,D_VAL) AND K_VAL<55;
PRICE_REPAIR:=C>EMA5_VAL AND C>REF(H,1) AND C>O;
TREND_REPAIR:=EMA20_VAL>REF(EMA20_VAL,1);
MOMENTUM_REPAIR:=POWER>REF(POWER,1);
VOLUME_OK:=RVOL_RAW>VOL_MIN;
CONFIRM_RAW:=RECENT_OVERSOLD AND KDJ_GOLD AND PRICE_REPAIR AND TREND_REPAIR AND MOMENTUM_REPAIR AND VOLUME_OK;
BUY_CONFIRM:=FILTER(CONFIRM_RAW,COOL_BUY);

{八、下跌侧：高位衰竭观察与转弱确认}
OVERBOUGHT:=J_VAL>85 OR K_VAL>80;
RECENT_OVERBOUGHT:=BARSLAST(OVERBOUGHT)<=RECENT_N;
KDJ_DEAD:=CROSS(D_VAL,K_VAL) AND K_VAL>45;
TOP_RAW:=RECENT_OVERBOUGHT AND KDJ_DEAD AND C<EMA5_VAL AND POWER<REF(POWER,1);
PRICE_BREAK:=C<EMA5_VAL AND C<REF(L,1) AND C<O;
TREND_DOWN:=EMA20_VAL<REF(EMA20_VAL,1);
MOMENTUM_DOWN:=POWER<REF(POWER,1);
SELL_RAW:=RECENT_OVERBOUGHT AND KDJ_DEAD AND PRICE_BREAK AND TREND_DOWN AND MOMENTUM_DOWN AND VOLUME_OK;
SELL_CONFIRM:=FILTER(SELL_RAW,COOL_SELL);
TOP_DOT:=FILTER(TOP_RAW AND NOT(SELL_CONFIRM),COOL_TOP);

{九、B/S高对比标记；方括号扩大视觉面积，颜色避开普通柱体}
LOW_BASE:=MIN(POWER,POWER_MA);
HIGH_BASE:=MAX(POWER,POWER_MA);
BULL_WATCH_Y:=LOW_BASE-12;
BUY_Y:=LOW_BASE-28;
BEAR_WATCH_Y:=HIGH_BASE+12;
SELL_Y:=HIGH_BASE+28;
DRAWTEXT(WHITE_DOT,BULL_WATCH_Y,'[B?]'),COLORWHITE;
DRAWTEXT(BUY_CONFIRM,BUY_Y,'[B]'),COLORYELLOW;
DRAWTEXT(TOP_DOT,BEAR_WATCH_Y,'[S?]'),COLORMAGENTA;
DRAWTEXT(SELL_CONFIRM,SELL_Y,'[S]'),COLORCYAN;

{十、隐藏输出，方便富途量化或提醒引用}
DOT_SIGNAL:IF(WHITE_DOT,1,0),NODRAW;
BUY_SIGNAL:IF(BUY_CONFIRM,1,0),NODRAW;
TOP_SIGNAL:IF(TOP_DOT,1,0),NODRAW;
SELL_SIGNAL:IF(SELL_CONFIRM,1,0),NODRAW;
KDJ_GOLD_SIGNAL:IF(KDJ_GOLD,1,0),NODRAW;
TREND_REPAIR_SIGNAL:IF(TREND_REPAIR,1,0),NODRAW;
VOLUME_OK_SIGNAL:IF(VOLUME_OK,1,0),NODRAW;