# Tk_radial_coverage2.py

# Tk_radial_coverage2.py

from Tkinter import *
import random
import math
import time

WW = 1200
HH = 680
root = Tk()
root.geometry(str(WW)+"x"+str(HH)+"+5+5")
canvas = Canvas(root, width=WW, height=HH)
canvas.pack()

r = 1600
vectors = 1000
midx,midy = 600,300
TWO_PI = math.pi*2

def radial_ref(angles=360): # 2500
    d = {}
    d2bn = 0
    if angles:
        d2bn = 360.0/angles
    for angle in range(angles):
        a = angle
        a = a*d2bn
        x = math.cos(a)
        y = math.sin(a)
        d[angle] = x,y
    print len(d)
    return d

class Slider:
    def __init__(self, master=None, label='', value=0.0, min=0.0, max=100):
        slist[-1] = DoubleVar()
        s = Scale(  master,
                    label=label,
                    variable=slist[-1],
                    from_=min*1.0,
                    to=max*1.0,
                    orient=HORIZONTAL,
                    length=max)
        slist[-1].set(value)
        s.place(x=0,y=0)

slist = []
sliderLabels = ['vector points','','','']
for i in range(1):
    slist.append(0)
    Slider(canvas, label=sliderLabels[i], max=WW-5, min=0)

timer = 0
p = p2 = 0
while 1:
    vectors = int(slist[0].get())+1000
    if p <> vectors:
        timer = time.time()+0.3
        p = vectors
    if p2 <> vectors and timer < time.time():
        PERIM = radial_ref(vectors)
        canvas.delete('all')
        for i in range(vectors):
            x,y = PERIM[i]
            x *= r
            y *= r
            canvas.create_line(0,midy,x,midy+y,fill='blue')
            canvas.create_line(WW,midy,WW+x,midy+y,fill='blue')
            canvas.create_line(midx,WW,midx+x,WW+y,fill='blue')
            canvas.create_rectangle(midx-70,midy-20,midx+70,midy+20,outline='yellow',fill='yellow')
            canvas.create_text(midx,midy,text=vectors,font='arial 30',fill='blue')
        p2 = vectors
    canvas.update()