pythonchallenge/pythontest24.py at master · ajohnson30/pythonchallenge · GitHub

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import Image
import operator

def mydir(d):
 if d==0:
  return (0,-1)
 elif d==1:
  return (1,0)
 elif d==2:
  return (0,1)
 return (-1,0)

im = Image.open("maze.png")
im2 = Image.new("RGB",(641,641))

imdata = im.getdata()

print im.getpixel((640,0))
print im.getpixel((639,0))
print im.getpixel((637,3))

x=639
y=0

fw=2

ii = 0
cnt=0

while (y < 640):
 rt = operator.mod(fw-1,4)
 lt = operator.mod(fw+1,4)
 bw = operator.mod(fw+2,4)

 d = mydir(rt)
 p = im.getpixel((x+d[0],y+d[1]))

 if p[2] == 0:
  im.putpixel((x,y),(p[0],p[1],240,p[3]))
  im2.putpixel((x,y),(p[0],p[1],240,p[3]))
  x = x + d[0]
  y = y + d[1]
  fw = rt
  ii = ii + 1
 elif p[2] == 240:
  im.putpixel((x,y),(p[0],p[1],120,p[3]))
  im2.putpixel((x,y),(0,0,0,0))
  x = x + d[0]
  y = y + d[1]
  fw = rt
  ii = ii - 1
 else:
  d = mydir(fw)
  p = im.getpixel((x+d[0],y+d[1]))

  if p[2] == 0:
   im.putpixel((x,y),(p[0],p[1],240,p[3]))
   im2.putpixel((x,y),(p[0],p[1],240,p[3]))
   x = x + d[0]
   y = y + d[1]
   ii = ii + 1
  elif p[2] == 240:
   im.putpixel((x,y),(p[0],p[1],120,p[3]))
   im2.putpixel((x,y),(0,0,0,0))
   x = x + d[0]
   y = y + d[1]
   ii = ii - 1

  else:
   d = mydir(lt)
   p = im.getpixel((x+d[0],y+d[1]))
   if p[2] == 0:
    im.putpixel((x,y),(p[0],p[1],240,p[3]))
    im2.putpixel((x,y),(p[0],p[1],240,p[3]))
    x = x + d[0]
    y = y + d[1]
    fw = lt
    ii = ii + 1
   elif p[2] == 240:
    im.putpixel((x,y),(p[0],p[1],120,p[3]))
    im2.putpixel((x,y),(0,0,0,0))
    x = x + d[0]
    y = y + d[1]
    fw = lt
    ii = ii - 1
   else:
    d = mydir(bw)
    fw = bw
    im.putpixel((x,y),(p[0],p[1],120,p[3]))
    im2.putpixel((x,y),(0,0,0,0))
    x = x + d[0]
    y = y + d[1]
    ii = ii - 1
 cnt=cnt+1
 #print str(x) + "," + str(y) + " " + str(fw) + " " + str(p[1])


 if operator.mod(cnt,10000) == 0:
  print str(x) + "," + str(y) + " " + str(fw) + " " + str(p[1])

p = im.getpixel((x,y))
im.putpixel((x,y),(p[0],p[1],240,p[3]))
im2.putpixel((x,y),(p[0],p[1],240,p[3]))

im.save("maze2.png")
im2.save("maze3.png")
print ii