# Tk_wave_qref.py

# Tk_wave_qref.py

from Tkinter import *
import math
import time

tx =  time.time
ww = 1400
hh = 510

root = Tk()
root.title("Simple Wave Plotting")
root.geometry("%dx%d+-6+-2"%(ww,hh))
cv = Canvas(width=ww, height=hh, bg='white')
cv.pack()

def draw():
    xy = [(x,y) for x,y in enumerate(Ys)]
    cv.create_line(xy, fill='red')
    cv.update()

x = 0
Ys = [-99999,-99999,-99999]
ydict = {}

for radius in range(3,hh/4,2):
    for r in range(radius,radius*4,4):
        t = ydict
        tYs = Ys[:]
        for angle in range(0,radius*4):
                at = hh-r-2
                theta = math.pi*angle/radius/2
                y = int(math.cos(theta)*r+at)
                if y < 1:
                    t = ydict
                    tYs = Ys[:]
                    break
                tYs.append(y)
                try:
                    t[(tYs[-3],tYs[-2])].add(tYs[-1])
                    t[(hh-tYs[-3],hh-tYs[-2])].add(hh-tYs[-1])
                except:
                    t[(tYs[-3],tYs[-2])] = set([tYs[-1]])
                    t[(hh-tYs[-3],hh-tYs[-2])] = set([hh-tYs[-1]])
                x += 1
        ydict = t
        Ys = tYs[:]

        cv.delete('all')
        Ys = Ys[-ww:]
        draw()

ydict = dict([(k, tuple(ydict[k])) for k in ydict])
print ydict