Normalized 45 Degree Angle Line

//@version=5
indicator('Normalized 45 Degree Angle Line', overlay=true)

// Determine starting point
lowest_1 = ta.lowest(low, 50)
startPrice = lowest_1 == low ? low[50] : high[50]

// Calculate angle line
angleLine = startPrice + (close[1] - startPrice) * math.sqrt(2)

// Normalize angle line
chartMin = ta.lowest(low, 50)
chartMax = ta.highest(high, 50)
normalizedAngleLine = (angleLine - chartMin) / (chartMax - chartMin)
scaledAngleLine = chartMin + normalizedAngleLine * (chartMax - chartMin)

// Plot angle line
plot(scaledAngleLine, color=color.new(color.blue, 0), style=plot.style_line)

// Define targets
target1 = angleLine + angleLine - startPrice
target2 = angleLine + (angleLine - startPrice) * 2

// Normalize targets
normalizedTarget1 = (target1 - chartMin) / (chartMax - chartMin)
scaledTarget1 = chartMin + normalizedTarget1 * (chartMax - chartMin)
normalizedTarget2 = (target2 - chartMin) / (chartMax - chartMin)
scaledTarget2 = chartMin + normalizedTarget2 * (chartMax - chartMin)

// Plot targets
plot(scaledTarget1, color=color.new(color.green, 0), style=plot.style_line)
plot(scaledTarget2, color=color.new(color.red, 0), style=plot.style_line)

// Add labels to targets
label.new(bar_index, scaledTarget1, 'Target 1', xloc=xloc.bar_index, yloc=scaledTarget1 > scaledAngleLine ? yloc.abovebar : yloc.belowbar, color=color.green)
label.new(bar_index, scaledTarget2, 'Target 2', xloc=xloc.bar_index, yloc=scaledTarget2 > scaledAngleLine ? yloc.abovebar : yloc.belowbar, color=color.red)