Sierpinski

import appuifw as A
import graphics as G

lock,run=A.e32.Ao_lock(),1
w,h=G.sysinfo.display_pixels()
img=G.Image.new((w,h))
def exit():
 lock.signal()
def draw(x):
 if img:canvas.blit(img)
A.app.screen='full'
canvas=A.Canvas(redraw_callback=draw)
A.app.body=canvas
A.app.exit_key_handler=exit

def h2r(h,s,v):
 ''' HSV > RGB '''
 if s==0.0: return v,v,v
 i=int(h*6.0)
 f=(h*6.0)-i
 p=v*(1.0-s)
 q=v*(1.0-s*f)
 t=v*(1.0-s*(1.0-f))
 if i%6==0:return v,t,p
 if i==1:return q,v,p
 if i==2:return p,v,t
 if i==3:return p,q,v
 if i==4:return t,p,v
 if i==5:return v,p,q

def gen_color(n=256):
 hsv=[(x*0.9/n,0.9,0.9) for x in xrange(n)]
 rgb=map(lambda x: tuple(map(lambda x:int(x*255), h2r(*x))),hsv)
 return rgb

def ssf(x,y,a,c):
 img.line((x,y,x+a,y),c)
 img.line((x,y,x,y+a),c)
 img.line((x,y+a,x+a,y+a),c)
 img.line((x+a,y,x+a,y+a),c)
 canvas.blit(img)
 a=float(a)/3
 if a<1:return
 for i in range(9):
  if i!=4:
   ssf(x+a*(i%3),y+a*(i/3),a,c)
 A.e32.ao_sleep(1e-08)

iter,colstep=0,9
color=gen_color(colstep)
size=160
n=size/3
px=(w-size)/2
img.clear(0)
for i in range(9):
 ssf(px+((i%3)*n),5+((i/3)*n),n,color[iter])
 iter+=1
img.save(u'e:\\sierpinski.png')
lock.wait()