Create a Voronoi diagram as a raster image in Python. Converted from PIL to DrawBot.
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# http://forum.drawbot.com/topic/148/voronoi-fun/2 | |
import random | |
import math | |
def generate_voronoi_diagram(imgx, imgy, num_cells): | |
nx = [] | |
ny = [] | |
nr = [] | |
ng = [] | |
nb = [] | |
for i in range(num_cells): | |
nx.append(random.randrange(imgx)) | |
ny.append(random.randrange(imgy)) | |
nr.append(random.random()) | |
ng.append(random.random()) | |
nb.append(random.random()) | |
im = ImageObject() | |
with im: | |
size(imgx, imgy) | |
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 | |
fill(nr[j], ng[j], nb[j]) | |
rect(x, y, 1, 1) | |
image(im, (0, 0)) | |
size(200, 200) | |
generate_voronoi_diagram(width(), height(), 7) | |
saveImage("VoronoiDiagram.png") |
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