# t_wave_overlays.py

# t_wave_overlays.py

import wave
import math
from turtle import Turtle, Screen
from itertools import cycle

COLORS = cycle(['red', 'blue', 'green', 'purple', 'yellow'])

def draw_wave():
    turtle.penup()
    turtle.color(next(COLORS))
    for x in range(20,100):
        y_val = amp * math.sin(math.radians(x * freq))
        turtle.goto(x-10, y_val)
        turtle.pendown()

screen = Screen()
screen.bgcolor('lightyellow')
screen.setworldcoordinates(0, -400, 100, 400)
screen.setup(600, 600)

turtle = Turtle('turtle')
turtle.hideturtle()
turtle.speed('fastest')
turtle.width(2)

amp = 360
while 1:
    freq_list = []
    for freq in range(1,200):
        freq_list.append(freq)
        print(('\nAmp = '+str(amp)+' '*16)[:16]+'Freq = '+str(freq))
        draw_wave()
    amp -= 1