serp/cython/serp.pyx

from cpython cimport array
cdef list serp(int n):
     cdef list ret = []
     cdef int ind
     cdef int i
     cdef int v
     cdef array.array t = array.array('b',(1,))
 
     for ind in range(1,n+1):
         ret.append(t)
         l = ret[-1]
         t = array.array('b')
         for i in range(-1,ind):
             if i == -1 or i==ind-1:
                 v = 1
             else:
                 v = l[i]^l[i+1]
             t.append(v)
     return ret

from PIL import Image
class SubPix:
    def __init__(self,mode,size,color = 0,s=2):
        self.s = s
        try:
            self.image = Image.new(mode,tuple(map(lambda x: int(x*s),size)),color)
        except:
            print(tuple(map(lambda x: x*s,size)))
    def set_subpix(self,cord,v):
        s=self.s
        x,y = map(lambda c: int(c*s),cord)
        args = tuple(map(lambda n: ((n%s+x,n//s+y),v),range(s**2)))
        for i in args:
            self.image.putpixel(*i)
cpdef make_triangle1(n,b_w = False,outdir = r'x:\users\Ralphie\Documents'):
    n = 2**n
    if b_w:
        p = (255,255,255)
        np = (0,0,0)
    else:
        np = (255,255,255)
        p = (0,0,0)
    s = serp(n)
    c = 0
    off = (n-1)/2
    triangle = SubPix('RGB',(n,n),np)
    for row in s:
        for x in range(len(row)):
            xy = (x+off,c)
            if row[x]:
                v = p
            else:
                v = np
        off -= .5
        c += 1
    triangle.image.save(r'{}\serp.png'.format(outdir))