Created
October 30, 2013 16:44
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#!/usr/bin/python | |
import Image | |
import numpy as np | |
class CellularAutomaton(object): | |
def __init__(self, elements, rulecode): | |
self.cells = list(elements) | |
self.rule = CARule(rulecode) | |
self.length = len(elements) | |
def __str__(self): | |
return ''.join(map(lambda x: '#' if x else '.', self.cells)) | |
def next(self): | |
nextgen = [self.rule(self.cells[i:i+3]) for i in xrange(self.length-2)] | |
self.cells = [self.cells[0]] + nextgen + [self.cells[-1]] | |
class CARule(object): | |
def __init__(self, wfcode): | |
''' | |
wolfram code: given as an integer with base 10, not binary. | |
''' | |
self.rulenum = wfcode | |
self.rule = map(lambda n: bool(int(n)), "{0:08b}".format(wfcode)) | |
self.rule.reverse() | |
# self.rule :: [Bool] | |
def __call__(self, conditions): | |
''' conditions : [Bool, Bool, Bool] ''' | |
return self.rule[ | |
sum([int(a) * 2**i for (i,a) in enumerate(conditions)])] | |
def __str__(self): | |
return "Wolfram Code {0}".format(self.rulenum) | |
def main(): | |
width = 2001 | |
gens = 2000 | |
myca = np.zeros(width*gens, dtype=int).reshape(gens, width) | |
halflength = (width-1)/2 | |
firstgen = [0]*halflength+[1]+[0]*halflength | |
mycell = CellularAutomaton(firstgen, 90) | |
for i in range(gens): | |
myca[i,:] = map(lambda x: 255 if x else 100, mycell.cells) | |
mycell.next() | |
img = Image.fromarray(np.uint8(myca)) | |
img.save("./rule90_5001_6000.png") | |
if __name__ == '__main__': | |
main() |
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