# Tk_smooth_wave_fn.py

# Tk_smooth_wave_fn.py

from tkinter import *
import random
import math
import time

root = Tk()
root.title("Smooth Wave Algorithm")
ww = 1400
hh = 300
cy = hh//2-128
root.geometry("%dx%d+-10+0"%(ww,hh))
canvas = Canvas(root, width=ww, height=hh)
canvas.pack()

waves = {}
steps = 10
for i in range(256):
    for j in range(256):
        values = []
        j2 = min(i+50, min(i-50, j))
        for step in range(1,steps+1):
            value = i + (j-i) * step/steps * 0.5
            values.append(value)
        waves[(i,j)] = values

while True:
    canvas.delete('all')
    data =[random.randint(0,255) for _ in range(0, ww, steps)]
    L= ww // steps -1

    x=0
    y0=random.randint(0 ,255)
    for j in range(L):
        target=max(0,min(255,y0+random.randint(-20 ,20)))
        for i in range(steps):
            y=waves[int(y0),int(target)][i]
            canvas.create_line(x,cy+y0,x+1,cy+y ,fill='green')
            y0=y
            x+=1

    canvas.update()
    time.sleep(0.5)