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// This Pine Script® code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © AlgoAlpha
//@version=6
indicator("Trinity Reversal Pattern [AlgoAlpha]", "AlgoAlpha - Trinity Reversal", overlay = true, max_lines_count = 500, max_labels_count = 500, max_bars_back = 5000)
// Inputs
calcGR = "Calculation"
strengthLookback = input.int(100, "Strength Lookback", minval = 2, maxval = 5000, tooltip = "Number of recent candle bodies stored in the array, including the current candle. Strength is the signal candle body divided by the largest stored body, multiplied by 100. It is not a win probability.", group = calcGR)
minimumStrength = input.float(0.0, "Minimum Signal Strength (%)", minval = 0.0, maxval = 100.0, step = 1.0, tooltip = "Filters out patterns below this body-strength score. Set to 0 to accept all pattern strengths.", group = calcGR)
expiryInput = input.int(100, "Level Expiry Bars", minval = 1, maxval = 5000, tooltip = "Number of chart bars after the signal candle before an untouched level expires. Expiry occurs at that bar's close. Touch checks start on the candle after the signal.", group = calcGR)
confirmClose = input.bool(true, "Confirm Signals on Close", tooltip = "Waits for the signal candle to close before confirming a pattern. When disabled, signals, levels, and scores can change before the candle closes.", group = calcGR)
trendGR = "Trend Filter"
useTrend = input.bool(false, "Use EMA Trend Filter", tooltip = "Shows the EMA gradient and filters opposing signals. A fast EMA cross above the slow EMA starts a bullish trend. A cross below starts a bearish trend. When disabled, both pattern directions are allowed.", group = trendGR)
fastLength = input.int(21, "Fast EMA", minval = 1, maxval = 500, group = trendGR, inline = "ema")
slowLength = input.int(50, "Slow EMA", minval = 2, maxval = 1000, tooltip = "Lengths of the fast and slow EMAs. The fast length must be less than the slow length when the trend filter is enabled.", group = trendGR, inline = "ema")
trendSource = input.source(close, "EMA Source", tooltip = "Price source used by both trend EMAs.", group = trendGR)
appearanceGR = "Appearance"
showSignals = input.bool(true, "Show Signals", group = appearanceGR, inline = "visuals")
showLevels = input.bool(true, "Show Levels", tooltip = "Shows the signal markers and reversal levels. Hiding these visuals does not disable signal or level-touch alerts.", group = appearanceGR, inline = "visuals")
showStrength = input.bool(true, "Show Strength", group = appearanceGR, inline = "labels")
labelSizeInput = input.string("Small", "Text Size", options = ["Tiny", "Small", "Normal", "Large"], tooltip = "Shows a fixed strength score at the midpoint of each active level. Labels use the chart background color and are deleted when levels are touched or expire.", group = appearanceGR, inline = "labels")
levelExtension = input.int(5, "Active Level Extension", minval = 1, maxval = 100, tooltip = "Number of chart bars to project active levels ahead. Touched or expired lines end at the touch or expiry bar.", group = appearanceGR)
inactiveTransparency = input.int(75, "Inactive Level Transparency", minval = 0, maxval = 100, tooltip = "Transparency of stopped levels. These lines remain on the chart as dotted lines until the storage limit requires removal.", group = appearanceGR)
maxLevels = input.int(500, "Maximum Stored Levels", minval = 10, maxval = 500, tooltip = "Maximum number of active and stopped lines retained. At the limit, the oldest stopped line is removed first. If every stored line is still active, the oldest active line and its label are removed instead.", group = appearanceGR)
showCrosses = input.bool(true, "Show EMA Crosses", tooltip = "Shows a dot when the fast EMA crosses the slow EMA. Requires the EMA trend filter.", group = appearanceGR)
gradientTransparency = input.int(70, "Trend Gradient Transparency", minval = 0, maxval = 100, tooltip = "Transparency at the stronger edge of the EMA gradient. The opposite edge is more transparent.", group = appearanceGR)
bullColor = input.color(#00ffbb, "Bullish Color", group = appearanceGR, inline = "colors")
bearColor = input.color(#ff1100, "", tooltip = "Colors used for bullish and bearish signals, levels, strength text, and the EMA gradient.", group = appearanceGR, inline = "colors")
// Variables and functions
var bodySamples = array.new_float()
var activeLines = array.new_line()
var activeLabels = array.new_label()
var activeDirections = array.new_int()
var activeStartBars = array.new_int()
var inactiveLines = array.new_line()
var trend = 0
sizeFromString(txt) =>
switch txt
"Tiny" => size.tiny
"Small" => size.small
"Normal" => size.normal
=> size.large
removeActiveLevel(index) =>
levelLine = array.remove(activeLines, index)
label.delete(array.remove(activeLabels, index))
array.remove(activeDirections, index)
array.remove(activeStartBars, index)
levelLine
// Calculations
if barstate.isfirst and useTrend and fastLength >= slowLength
runtime.error("Fast EMA length must be less than Slow EMA length.")
candleBody = math.abs(close - open)
array.push(bodySamples, candleBody)
if array.size(bodySamples) > strengthLookback
array.shift(bodySamples)
largestBody = array.max(bodySamples)
strength = largestBody > 0 ? math.min(100.0, candleBody / largestBody * 100.0) : 0.0
fastEMA = ta.ema(trendSource, fastLength)
slowEMA = ta.ema(trendSource, slowLength)
bullCross = ta.crossover(fastEMA, slowEMA)
bearCross = ta.crossunder(fastEMA, slowEMA)
if bullCross
trend := 1
else if bearCross
trend := -1
else if trend == 0
trend := fastEMA > slowEMA ? 1 : fastEMA < slowEMA ? -1 : 0
bull = close > open and high > high[2] and low[1] < low[2] and high[1] < high[2] and close[1] < open[1] and close[2] < open[2]
bear = close < open and low < low[2] and high[1] > high[2] and low[1] > low[2] and close[1] > open[1] and close[2] > open[2]
signalReady = bar_index >= 2 and (not confirmClose or barstate.isconfirmed)
bullSignal = bull and signalReady and strength >= minimumStrength and (not useTrend or trend == 1)
bearSignal = bear and signalReady and strength >= minimumStrength and (not useTrend or trend == -1)
patternLow = math.min(low, low[1], low[2])
patternHigh = math.max(high, high[1], high[2])
lowOffset = low == patternLow ? 0 : low[1] == patternLow ? 1 : 2
highOffset = high == patternHigh ? 0 : high[1] == patternHigh ? 1 : 2
bullLevelTouched = false
bearLevelTouched = false
levelExpired = false
// Visuals
if array.size(activeLines) > 0
for i = array.size(activeLines) - 1 to 0
activeLine = array.get(activeLines, i)
activeLabel = array.get(activeLabels, i)
direction = array.get(activeDirections, i)
startBar = array.get(activeStartBars, i)
level = line.get_y1(activeLine)
age = bar_index - startBar
if age > 0
wickTouch = direction == 1 ? low <= level : high >= level
expired = age >= expiryInput and barstate.isconfirmed
endBar = wickTouch or expired ? bar_index : bar_index + levelExtension
line.set_x2(activeLine, endBar)
if wickTouch or expired
levelColor = direction == 1 ? bullColor : bearColor
line.set_color(activeLine, showLevels ? color.new(levelColor, inactiveTransparency) : na)
line.set_style(activeLine, line.style_dotted)
array.push(inactiveLines, removeActiveLevel(i))
bullLevelTouched := bullLevelTouched or (wickTouch and direction == 1)
bearLevelTouched := bearLevelTouched or (wickTouch and direction == -1)
levelExpired := levelExpired or (expired and not wickTouch)
else if not na(activeLabel)
midpoint = int(math.floor((line.get_x1(activeLine) + endBar) * 0.5))
label.set_x(activeLabel, midpoint)
if bullSignal or bearSignal
while array.size(activeLines) + array.size(inactiveLines) >= maxLevels
if array.size(inactiveLines) > 0
line.delete(array.shift(inactiveLines))
else
line.delete(removeActiveLevel(0))
direction = bullSignal ? 1 : -1
level = bullSignal ? patternLow : patternHigh
startBar = bar_index - (bullSignal ? lowOffset : highOffset)
endBar = bar_index + levelExtension
levelColor = bullSignal ? bullColor : bearColor
midpoint = int(math.floor((startBar + endBar) * 0.5))
levelText = str.tostring(strength, "#.#") + "% Strength"
newLine = line.new(x1 = startBar, y1 = level, x2 = endBar, y2 = level, xloc = xloc.bar_index, extend = extend.none, color = showLevels ? levelColor : na, width = 3)
newLabel = label(na)
if showLevels and showStrength
newLabel := label.new(x = midpoint, y = level, text = levelText, xloc = xloc.bar_index, yloc = yloc.price, color = chart.bg_color, style = label.style_label_center, textcolor = levelColor, size = sizeFromString(labelSizeInput), textalign = text.align_center)
array.push(activeLines, newLine)
array.push(activeLabels, newLabel)
array.push(activeDirections, direction)
array.push(activeStartBars, bar_index)
trendColor = trend == 1 ? bullColor : trend == -1 ? bearColor : color.gray
trendTop = math.max(fastEMA, slowEMA)
trendBottom = math.min(fastEMA, slowEMA)
fadeTransparency = math.min(100, gradientTransparency + 25)
topColor = trend == 1 ? color.new(trendColor, fadeTransparency) : color.new(trendColor, gradientTransparency)
bottomColor = trend == 1 ? color.new(trendColor, gradientTransparency) : color.new(trendColor, fadeTransparency)
fastPlot = plot(useTrend ? fastEMA : na, title = "Fast Trend EMA", color = color.new(trendColor, 15), linewidth = 2, style = plot.style_linebr)
slowPlot = plot(useTrend ? slowEMA : na, title = "Slow Trend EMA", color = color.new(trendColor, 45), linewidth = 2, style = plot.style_linebr)
fill(fastPlot, slowPlot, trendTop, trendBottom, useTrend ? topColor : na, useTrend ? bottomColor : na, title = "EMA Trend Gradient", fillgaps = false)
plot(useTrend and showCrosses and (bullCross or bearCross) ? slowEMA : na, title = "EMA Cross", color = trendColor, linewidth = 4, style = plot.style_circles)
plotshape(showSignals and bullSignal, title = "Bullish Trinity Reversal", style = shape.labelup, location = location.belowbar, color = bullColor, text = "▲", textcolor = chart.fg_color, size = size.tiny)
plotshape(showSignals and bearSignal, title = "Bearish Trinity Reversal", style = shape.labeldown, location = location.abovebar, color = bearColor, text = "▼", textcolor = chart.fg_color, size = size.tiny)
// Alerts
alertcondition(bullSignal, title = "Bullish Trinity Reversal")
alertcondition(bearSignal, title = "Bearish Trinity Reversal")
alertcondition(bullLevelTouched, title = "Bullish Trinity Level Touched")
alertcondition(bearLevelTouched, title = "Bearish Trinity Level Touched")
alertcondition(levelExpired, title = "Trinity Level Expired")
alertcondition(useTrend and bullCross and signalReady, title = "Bullish EMA Cross")
alertcondition(useTrend and bearCross and signalReady, title = "Bearish EMA Cross")