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@boronine
Created August 17, 2014 12:46
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Colorful display pic with HUSL
import math
import png
from husl import *
def mix(h1, h2, t):
return h1 * t + h2 * (1 - t)
def spiral(radius, degree, number):
n = 1.0 / number
curvy_radius = (radius + degree) % 1
return ((curvy_radius % n) / n)
def spiral_cart(cx, cy, number):
radius = math.sqrt(cx ** 2 + cy ** 2)
degree_rad = math.atan2(cy, cx)
degree = degree_rad / 2.0 / math.pi + 0.5
return spiral(radius, degree, number)
def get_color(x, y):
cx = x - 0.5
cy = y - 0.5
criss = (x + y) / 2
cross = ((1 - x) + y) / 2
radius = math.sqrt(cx ** 2 + cy ** 2)
degree_rad = math.atan2(cy, cx)
degree = degree_rad / 2.0 / math.pi
spiral1 = spiral_cart(cx, cy, 10)
spiral2 = spiral_cart(cx, cy, 9)
color1 = criss
color2 = cross
color3 = degree
s = 1
l = mix(0.5, criss, spiral2)
h = mix(color2, color3, spiral1)
h = (h + color1) % 1
return (360 * h, 100 * s, 100 * l)
def write_png(func, height, width):
p = []
for i in range(height):
row = []
for j in range(width):
row.extend(rgb_prepare(husl_to_rgb(*func(
float(j) / width,
float(i) / height))))
p.append(row)
f = open('avatar.png', 'wb')
w = png.Writer(width, height)
w.write(f, p)
f.close()
if __name__ == "__main__":
write_png(get_color, 300, 300)
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