from __future__ import print_function
"""
Algorithmic melody patterns snapped on a specific scale...

"""

from pyo import *

s = Server(duplex=0).boot()

scls = [[0,4,7,11,13,17,21,25,29,33],
        [0,7,12,14,17,21,24,29,31,34],
        [0,7,10,12,15,19,20]]

env = CosTable([(0,0),(50,1),(500,.25),(8191,0)])
wav = SquareTable(5)

met = Metro(time=.125, poly=8).play()
note = TrigXnoiseMidi(met, dist="loopseg", x1=1, x2=.2, mrange=(48,97))
snp = Snap(note, choice=scls[0], scale=1)

curscl = 0
def changeScl():
    # change the scale for snp.choice argument
    global curscl
    curscl = (curscl + 1) % len(scls)
    snp.choice = scls[curscl]
    print(snp.choice)

metscl = Metro(time=8).play()
tr = TrigFunc(metscl, function=changeScl)

c = TrigEnv(met, table=env, mul=.07)
d = Osc(table=wav, freq=snp, mul=c).out()
d1 = Osc(table=wav, freq=snp*0.999, mul=c).out()
d2 = Osc(table=wav, freq=snp*1.002, mul=c).out()
d3 = Osc(table=wav, freq=snp*0.997, mul=c).out()

s.gui(locals())