Un générateur de multi-drawstat à partir d'une image. L'un des plus optimisés à ce jour.
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#!/usr/bin/env python3
from argparse import ArgumentParser
from bresenham import bresenham
from PIL import Image, ImageDraw
from random import randint
import sys
rand = lambda: randint(0,255)
def print_stats(img):
pixels = img.getdata()
count = sum([1 for i in pixels if i == 0])
print("{} black pixels over {} ({:.1%})".format(count, len(pixels), count/len(pixels)))
def get_lines(img):
lines = []
pixels = [(x, y) for x in range(img.width) for y in range(img.height) if img.getpixel((x, y)) == 0]
i, n = 0, len(pixels) * len(pixels)
print("Get lines:", end = "")
for a in pixels:
for b in pixels:
line = list(bresenham(b[0], b[1], a[0], a[1]))
r = len([0 for p in line if p not in pixels])
if not r:
lines.append(line)
i += 1
print("\rGet lines: {:.0%}".format(i / n), end = "")
print("\rGet lines: complete")
print("{} lines found".format(len(lines)))
return lines
def removing_doubles(lines):
results = []
i, n = 0, len(lines)
print("Remove duplicated lines:", end = "")
for l in lines:
s = sorted(l)
same = False
for o in results:
if sorted(o) == s:
same = True
break
if same == False:
results.append(l)
i += 1
print("\rRemove double lines: {:.0%}".format(i / n), end = "")
print("\rRemove double lines: complete")
print("{} lines kept".format(len(results)))
return results
def removing_useless(lines):
results = []
i, n = 0, len(lines)
print("Remove useless lines:", end = "")
for l in lines:
inclusions = 0
others = (x for x in lines if x != l)
for k in others:
if len(list(set(l).intersection(set(k)))) == len(l):
inclusions += 1
break
if inclusions == 0 or len(l) == 1:
results.append((len(l), l))
i += 1
print("\rRemove useless lines: {:.0%}".format(i / n), end = "")
print("\rRemove useless lines: complete")
print("{} lines kept".format(len(results)))
return results
def get_best_solution(img, lines):
px_left = [(x, y) for x in range(img.width) for y in range(img.height) if img.getpixel((x, y)) == 0]
results = []
n = len(px_left)
print("Draw:", end = "")
while len(px_left):
lines = [(sum([1 for p in l if p in px_left]), l) for n, l in lines]
lines = sorted(lines)
(p, line) = lines.pop()
px_left = [p for p in px_left if p not in line]
results.append((line[0], line[-1]))
print("\rDraw: {:.0%}".format(1 - len(px_left)/n), end="")
print("\rDraw: complete")
print("Solution found in {} lines".format(len(results)))
return results
if __name__ == "__main__":
parser = ArgumentParser(description='Generate the Multi DrawStat code for an image.')
parser.add_argument('path', type=str, help='path of the image to process')
parser.add_argument('-d', '--draw', type=bool, default=False, help='draw the result into a new file and display it')
args = parser.parse_args()
try:
image = Image.open(args.path)
except:
sys.exit("Error! Unable to open file.")
try:
image = image.convert('1')
except:
sys.exit("Error! Unable to convert to 1bit")
print_stats(image)
lines = get_lines(image)
lines = removing_doubles(lines)
lines = removing_useless(lines)
r = get_best_solution(image, lines)
if draw:
export = Image.new('RGB', image.size, 'white')
drawer = ImageDraw.Draw(export)
for ((a, b), (c, d)) in reversed(r):
drawer.line((a, b, c, d), fill=(rand(), rand(), rand()))
export = export.resize((export.width * 8, export.height * 8))
export.save(args.path[:-4] + "_gen.png")
export.show()
print("\n\n=================================================\n\n")
for l in r:
print(l[0], l[1])
print("\n\n=================================================\n\nDone!")