The Gist:
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#! /usr/bin/env python | |
# -*- coding: latin-1 -*- | |
import math | |
characters = [32,0x2591,0x2592,0x2593,0x2588] | |
breakpoints = [0.1,0.177,0.316,0.563] | |
#reakpoints = [0.2,0.4,0.6,0.8] | |
def raster(x,y,R,center,SIGMA=1.5): | |
r = math.sqrt(math.pow(x-center,2)+math.pow( (y-center)*0.9,2)) | |
return math.exp(-math.pow(r-R,2)/SIGMA) | |
from bisect import bisect | |
def genchr(z): | |
n = bisect(breakpoints,z) | |
return unichr(characters[n]) | |
def circle(R,sigma=1.5,side=10): | |
size = 2*R + 2*side | |
array = [] | |
for z in xrange(size): | |
array.append([' ']*size) | |
center = side+R | |
for i in xrange(size): | |
for j in xrange(size): | |
z = raster(i,j,R,center,sigma) | |
foo = genchr(z) | |
array[i][j] = foo | |
#print "{},{}:{}:{}".format(i,j,z,foo) | |
array[center][center] = 'X' | |
return array | |
import sys | |
def printarr(arr): | |
for line in arr: | |
for c in line: | |
print c, | |
if __name__=="__main__": | |
if len(sys.argv)>1: | |
if len(sys.argv)==2: | |
printarr(circle(int(sys.argv[1]))) | |
elif len(sys.argv)==3: | |
printarr(circle(int(sys.argv[1]),float(sys.argv[2]))) | |
else: | |
printarr(circle(int(sys.argv[1]),float(sys.argv[2]),int(sys.argv[3]))) | |
else: | |
mesg = r"""Usage: circle R [SIGMA] [SIDE] where R is radius, sigma is sigma and side is buffer on edges""" | |
print mesg |
Example output:
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