MTF Stationary Cosine Wave Cycles

//@version=5
indicator("MTF Stationary Cosine Wave Cycles", shorttitle="MTF Stationary Cosine Wave Cycles", overlay=false)

// Inputs
cycle_len_input = input.int(title="Cycle Length (bars)", defval=10)
cycle_start_input = input.int(title="Cycle Start Bar Offset", defval=0)
res_input = input.timeframe(title="Timeframe", defval="60")

// Variables
var int cycle_len = cycle_len_input
var int cycle_start = cycle_start_input
var string res = res_input

// Compute stationary waves
wave_phase_1 = 2 * math.pi * (bar_index - cycle_start) / cycle_len
wave_value_1 = math.cos(wave_phase_1)

wave_phase_2 = 2 * math.pi * (bar_index - cycle_start) / cycle_len - math.pi / 2
wave_value_2 = math.cos(wave_phase_2)

wave_phase_3 = 2 * math.pi * (bar_index - cycle_start) / cycle_len + math.pi / 2
wave_value_3 = math.cos(wave_phase_3)

wave_phase_4 = 2 * math.pi * (bar_index - cycle_start) / cycle_len + math.pi
wave_value_4 = math.cos(wave_phase_4)

// Plot stationary waves
plot(wave_value_1, color=color.blue, linewidth=2)
plot(wave_value_2, color=color.red, linewidth=2)
plot(wave_value_3, color=color.orange, linewidth=2)
plot(wave_value_4, color=color.green, linewidth=2)

// Format
bgcolor(color.new(color.black, 100))