help visual high and low pivot points

pivotpoints.pine

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// @version=5
indicator("Auto-Pivot", overlay=true)

// Get user input
var devTooltip          = "Deviation is a multiplier that affects how much the price should deviate from the previous pivot in order for the bar to become a new pivot."
var depthTooltip        = "The minimum number of bars that will be taken into account when calculating the indicator."
threshold_multiplier    = input.float(title="Deviation", defval=3, minval=0, tooltip=devTooltip)
depth                   = input.int(title="Depth", defval=10, minval=1, tooltip=depthTooltip)
reverse                 = input.bool(title="Reverse", defval=false, tooltip="Flips the fibonacci levels around.")
extendLeft              = input.bool(title="Extend Left    |    Extend Right", defval=false, inline="Extend Lines")
extendRight             = input.bool(title="", defval=false, inline="Extend Lines")
prices                  = input.bool(title="Show Prices", defval=false)
deleteLastLine          = input.bool(title="Delete Last Line", defval=false)
levels                  = input.bool(title="Show Levels", defval=true, inline="Levels")
levelsFormat            = input.string(title="", defval="Values", options=["Values", "Percent"], inline="Levels")
labelsPosition          = input.string(title="Labels Position", defval="Left", options=["Left", "Right"])
backgroundTransparency  = input.int(title="Background Transparency", defval=85, minval=0, maxval=100)

// Check extending parameter
var extending = extend.none
if extendLeft and extendRight
    extending := extend.both
if extendLeft and not extendRight
    extending := extend.left
if not extendLeft and extendRight
    extending := extend.right

// Calculate deviation threshold for identifying major swings
dev_threshold = ta.atr(10) / close * 100 * threshold_multiplier

// Prepare pivot variables
var line lineLast = na
var int iLast = 0
var int iPrev = 0
var float pLast = 0
var isHighLast = false // Otherwise the last pivot is a low pivot

// Custom function for detecting pivot points
pivots(src, length, isHigh) =>
    l2 = length * 2
    c = nz(src[length])
    ok = true
    for i = 0 to l2
        if isHigh and src[i] > c
            ok := false
        if not isHigh and src[i] < c
            ok := false
    if ok
        [bar_index[length], c]
    else
        [int(na), float(na)]

// Get bar index & price high/low for current pivots
[iH, pH] = pivots(high, depth / 2, true)
[iL, pL] = pivots(low, depth / 2, false)

// Custom function for calculating price deviation
calc_dev(base_price, price) => 100 * (price - base_price) / price

// Custom function for detecting pivots that meet our deviation criteria
pivotFound(dev, isHigh, index, price) =>
    if isHighLast == isHigh and not na(lineLast)
        // New pivot in same direction as last, so update line (ie. trend-continuation)
        if isHighLast ? price > pLast : price < pLast
            line.set_xy2(lineLast, index, price)
            [lineLast, isHighLast]
        else
            [line(na), bool(na)] // No valid pivot detected, return nothing
    else // Reverse the trend/pivot direction (or create the very first line if lineLast is na)
        if math.abs(dev) > dev_threshold
            // Price move is significant - create a new line between the pivot points
            id = line.new(iLast, pLast, index, price, color=color.gray, width=1, style=line.style_dashed)
            [id, isHigh]
        else
            [line(na), bool(na)]

// If bar index for current pivot high is not NA (ie. we have a new pivot):
if not na(iH)
    dev = calc_dev(pLast, pH) // Calculate the deviation from last pivot
    [id, isHigh] = pivotFound(dev, true, iH, pH)
    if not na(id) // If the line has been updated, update price values and delete previous line
        if id != lineLast and deleteLastLine
            line.delete(lineLast)
        lineLast := id
        isHighLast := isHigh
        iPrev := iLast
        iLast := iH
        pLast := pH
else 
    if not na(iL) // If bar index for current pivot low is not NA (ie. we have a new pivot):
        dev = calc_dev(pLast, pL) // Calculate the deviation from last pivot
        [id, isHigh] = pivotFound(dev, false, iL, pL)
        if not na(id) // If the line has been updated, update price values and delete previous line
            if id != lineLast and deleteLastLine
                line.delete(lineLast)
            lineLast := id
            isHighLast := isHigh
            iPrev := iLast
            iLast := iL
            pLast := pL
// Format the given string
format(txt) => " (" + str.tostring(txt, "#.####") + ")"

// Return the formatted label text for Fibonacci levels
label_txt(level, price) =>
    l = levelsFormat == "Values" ? str.tostring(level) : str.tostring(level * 100) + "%"
    (levels ? l : "") + (prices ? format(price) : "")

// Returns true if price is crossing the given fib level
crossing_level(price, fib) => (fib > price and fib < price[1]) or (fib < price and fib > price[1])

// Get starting and ending high/low price of the current pivot (for calculating fib levels)
startPrice = reverse ? line.get_y1(lineLast) : pLast
endPrice = reverse ? pLast : line.get_y1(lineLast)

// Calculate price difference between high and low
iHL = startPrice > endPrice
diff = (iHL ? -1 : 1) * math.abs(startPrice - endPrice)