# Tk_1D_Step_Waves.py

# Tk_1D_Step_Waves.py

'''
create step waves
'''

from tkinter import *
import PIL
import math
import random

ww = 1400
hh = 600

root=Tk()
canvas = Canvas(root,width=ww,height=hh,bg='black')
canvas.grid(row=0,column=0,sticky=N+S+E+W)
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def oRGB(rgb):
    r,g,b = rgb
    return "#%02x%02x%02x" % (r,g,b)

def plot(x):
    canvas.create_line((x, 0, x, y), fill=color)
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def init():
    global y
    canvas.delete('all')
    for x1 in range(0,ww,10):
        target = max(20,min(hh-20,y+random.randint(-10,10)))
        for x2 in range(0,10):
            y = target
            plot(x1+x2+2)
    canvas.update()

rgb = 255,255,0 # yellow
color = oRGB(rgb)

y = hh/2

init()