Sinewave best hack

//@version=5
//-----
indicator('Sine Wave')
pi = 3.14159
n = bar_index
period = 200
amplitude = 1
sin = math.sin(2 * pi * 1 / period * n) * amplitude
//---- Plot
plot(sin, color=color.new(color.blue, 0))
//

n2 = bar_index
period2 = 50
amplitude2 = 1
saw = (n2 / period2 % 1 - .5) * 2 * amplitude2
//---- Plot
plot(saw, color=color.new(color.blue, 0))
//

src_ema = sin

e1 = ta.ema(src_ema, 12)
s1 = ta.sma(src_ema, 12)
e2 = ta.ema(src_ema, 26)
s2 = ta.sma(src_ema, 26)

e3 = ta.ema(src_ema, 50)
s3 = ta.sma(src_ema, 50)
e4 = ta.ema(src_ema, 200)
s4 = ta.sma(src_ema, 200)

g1 = 0.5 * (e1 + s1)
g2 = 0.5 * (e2 + s2)
g3 = 0.5 * (e3 + s3)
g4 = 0.5 * (e4 + s4)

cr = ta.crossover(g1, g2) ? color.green : na
cg = ta.crossunder(g1, g2) ? color.red : na

cr2 = ta.crossover(g3, g4) ? color.lime : na
cg2 = ta.crossunder(g3, g4) ? color.maroon : na

plot(g1, color=color.new(color.green, 0))
plot(g2, color=color.new(color.red, 0))

plot(g3, color=color.new(color.purple, 0))
plot(g4, color=color.new(color.maroon, 0))


bgcolor(cr, transp=20)
bgcolor(cg, transp=20)
bgcolor(cr2, transp=20)
bgcolor(cg2, transp=20)