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import hashlib
import random
from PIL import Image, ImageDraw
from hemiptera_common import *
import os
SERVER_SALT="foobar"
D = 7
pixel_width=1
def hash_generator(h) :
index = 0
while True :
yield int(h[index],16)
index +=1
if index == len(h) : ## Keep images interesting if size is significantly larger than hash input
index = 0
h = hashlib.sha1(h.encode()).hexdigest()
def gen_color(h) :
return tuple(tuple(next(h)*16 for i in range(3)) for i in range(2))
def gen_image(h) :
h = hash_generator(h)
c1, c2 = gen_color(h)
im = Image.new("RGBA", (D,D))
draw = ImageDraw.Draw(im)
index = 0
for i in range(D//2+1) :
for j in range(D) :
k = next(h)
if k % 2 or k//2 % 2 :
if k % 2 :
color = c1
else :
color = c2
draw.point([(i,j), (D-1-i,j)], fill=color)
return im
def generate_avatar(email) :
if email is None :
email = ""
h = hashlib.sha1(str(email+SERVER_SALT).encode()).hexdigest()
imgpath = opj(basedir, "export", "static")
img = gen_image(h)
os.makedirs(imgpath, exist_ok=True)
img.save(opj(imgpath, h+".png"))
return "/static/" + h+".png"
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