main.py

from PIL import Image
import random
import math
import time
 
def generate_voronoi_diagram(width, height, num_cells):
  start_time = time.clock()
  image = Image.new("RGB", (width, height))
  putpixel = image.putpixel
  imgx, imgy = image.size
  nx = []
  ny = []
  nr = []
  ng = []
  nb = []
  for i in range(num_cells):
		nx.append(random.randrange(imgx))
		ny.append(random.randrange(imgy))
		nr.append(random.randrange(256))
		ng.append(random.randrange(256))
		nb.append(random.randrange(256))
  for y in range(imgy):
    for x in range(imgx):
			dmin = math.hypot(imgx-1, imgy-1)
			j = -1
			for i in range(num_cells):
				d = math.hypot(nx[i]-x, ny[i]-y)
				if d < dmin:
					dmin = d
					j = i
			putpixel((x, y), (nr[j], ng[j], nb[j]))
  image.save("VoronoiDiagram.png", "PNG")
  print time.clock() - start_time, "seconds"
      

n = [] 
b = 10 
for i in range(1, b+1): 
 n.append(10*i)

for i in range(1,b+1): 
 generate_voronoi_diagram(1000, 1000, n[i])