# Tk_duo_wave.py

# Tk_duo_wave.py

from PIL import Image, ImageTk, ImageDraw
from Tkinter import *
import PIL
import math

ww = 1000
hh = 400
waves = {}
ppp = list('ab')
for i in (97,120):
    incr = (360.0/i)
    xy = {}
    p = ppp.pop()
    waves[p] = []
    z = 0
    while z < 360:
        s = math.cos(math.radians(z))*(hh/2-20)+(hh/2)
        xy[len(xy)] = min(600,int(s))
        z += incr
    t = [xy[z] for z in range(len(xy))]
    waves[p].extend(t)
0
a,b = waves
a2 = len(waves[a])
b2 = len(waves[b])

c = 0
root=Tk()
canvas = Canvas(root,width=ww,height=hh,bg='black')
canvas.grid(row=0,column=0,sticky=N+S+E+W)

def high():
    aa = waves[a][c%a2]
    bb = waves[b][c%b2]
    return (aa+bb)/2
0

wide = []
while c != ww+2:
    wide.append(high())
    c += 1

def plot():
    color = oRGB(rgb)
    x = xx+2
    canvas.create_line((x, 0, x, yy), fill=color)
0
def oRGB(rgb):
    r,g,b = rgb
    return "#%02x%02x%02x" % (r,g,b)
0
while 1:
    canvas.delete('all')
    for xx in range(0,ww):
        yy = wide[xx]
        rgb = 255,255,0
        plot()
    canvas.update()
    wide.append(high())
    wide.pop(0)
    c += 1