Trend follower v2

// Smooth Call Put Trend Indicator

indicator("Smooth Call Put Trend", overlay=true)

src = input.source(close, title="Source")
fastLen = input.int(9, title="Fast EMA Length")
slowLen = input.int(21, title="Slow EMA Length")
trendLen = input.int(50, title="Trend EMA Length")
confirmBars = input.int(2, title="Trend Confirmation Bars", minval=1)
atrLen = input.int(14, title="ATR Length")
minGapAtr = input.float(0.10, title="Minimum EMA Gap (ATR)", minval=0.0)
showEma = input.bool(true, title="Show EMAs")
showBars = input.bool(true, title="Color Trend Bars")

fastEma = talib.ema(src, fastLen)
slowEma = talib.ema(src, slowLen)
trendEma = talib.ema(src, trendLen)
atrValue = talib.atr(atrLen)

emaGap = math.abs(fastEma - slowEma)

bullBase = fastEma > slowEma and close > trendEma and emaGap >= atrValue * minGapAtr
bearBase = fastEma < slowEma and close < trendEma and emaGap >= atrValue * minGapAtr

bullConfirmed = bullBase and bullBase[1]
bearConfirmed = bearBase and bearBase[1]

bullSignal = bullConfirmed and not bullConfirmed[1]
bearSignal = bearConfirmed and not bearConfirmed[1]

plot(showEma ? fastEma : na, title="9 EMA", color=color.lime, linewidth=2)
plot(showEma ? slowEma : na, title="21 EMA", color=color.orange, linewidth=2)
plot(showEma ? trendEma : na, title="Trend EMA", color=color.blue, linewidth=2)

plotshape(bullSignal, title="CALL BUY", shape=shape.labelup, location=location.belowbar, color=color.green, text="CALL BUY", textcolor=color.white, size=size.small)

plotshape(bearSignal, title="PUT BUY", shape=shape.labeldown, location=location.abovebar, color=color.red, text="PUT BUY", textcolor=color.white, size=size.small)

barTrendColor = bullConfirmed ? color.green : bearConfirmed ? color.red : na

barcolor(showBars ? barTrendColor : na)

if bullSignal {
alert("CALL BUY: Smooth bullish trend confirmed")
}

if bearSignal {
alert("PUT BUY: Smooth bearish trend confirmed")
}