Adaptive Trend Lines (Expo)

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © Zeiierman

//Copyright by Zeiierman.
//The information contained in my scripts/indicators/ideas does not constitute financial advice or a solicitation to buy or sell any securities of any type.
//I will not accept liability for any loss or damage, including without limitation any loss of profit, which may arise directly or indirectly from use of or reliance on such information.
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//My scripts/indicators/ideas are only for educational purposes!

//@version=4
study("Adaptive Trend Lines (Expo)", overlay=true)

// Input
_src = close
_lookback_positive = input(100, title="Positive Trend Length")
_lookback_negative = input(100, title="Negative Trend Length")
_std = input(10, title="Standard deviation Period")
_tr = 10
_mult = input(1, title="Multiplicator")

_Self_Adjusts = ((tr[_tr]+stdev(_src,_std)*_mult))


// Line 1, Line2, Line 3 = Positive
// Line 1, Line2, Line 3 = Positive

// Line 1
var lowest_low_line = line.new(bar_index[0], high[0], bar_index,low,color=color.green)
line.set_xy1(lowest_low_line,bar_index[0],lowest(low,_lookback_positive))
line.set_xy2(lowest_low_line,bar_index[lowestbars(low,_lookback_positive)*-1],lowest(low,_lookback_positive))

// Line 2
var positive_trend_line = line.new(bar_index[0], high[0], bar_index,low,color=color.green,extend=extend.left)
line.set_xy1(positive_trend_line,bar_index[0],lowest(low,_lookback_positive)+_Self_Adjusts)
line.set_xy2(positive_trend_line,bar_index[lowestbars(low,_lookback_positive)*-1],lowest(low,_lookback_positive))

// Line 3
var positive_trend_channel = line.new(bar_index[0], high[0], bar_index,low,color=color.green,extend=extend.left)
line.set_xy1(positive_trend_channel,bar_index[0],highest(high,_lookback_positive)+_Self_Adjusts/2)
line.set_xy2(positive_trend_channel,bar_index[lowestbars(low,_lookback_positive)*-1],highest(low,_lookback_positive))


// Line 4, Line 5, Line 6 = Negative
// Line 4, Line 5, Line 6 = Negative

// Line 4
var highest_high_line = line.new(bar_index[0], high[0], bar_index,low,color=color.red)
line.set_xy1(highest_high_line,bar_index[0],highest(high,_lookback_negative))
line.set_xy2(highest_high_line,bar_index[highestbars(high,_lookback_negative)*-1],highest(high,_lookback_negative))


// Line 5
var negative_trend_line = line.new(bar_index[0], high[0], bar_index,low,color=color.red, extend=extend.left)
line.set_xy1(negative_trend_line,bar_index[0],highest(high,_lookback_negative)-_Self_Adjusts)
line.set_xy2(negative_trend_line,bar_index[highestbars(high,_lookback_negative)*-1],highest(high,_lookback_negative))


// Line 6
var negative_trend_channel = line.new(bar_index[0], high[0], bar_index,low,color=color.red, extend=extend.left)
line.set_xy1(negative_trend_channel,bar_index[0],lowest(high,_lookback_negative)-_Self_Adjusts/2)
line.set_xy2(negative_trend_channel,bar_index[highestbars(high,_lookback_negative)*-1],lowest(high,_lookback_negative))