# one_million_dots_1080p.py
import png

def draw_pixel(pixels, width, x, y, rrggbb):
 offset_r  = (width * y + x) * 3
 pixels[offset_r    ] = int(rrggbb[-6:-4], 16)
 pixels[offset_r + 1] = int(rrggbb[-4:-2], 16)
 pixels[offset_r + 2] = int(rrggbb[-2:  ], 16)

width_1k    = 19
height_1k   = 106
width_10k   = 10 * width_1k
height_1m   = 1080
width_1m    = 1920
excludess   = [(18,0),(18,2),(18,4),(18,6),(18,100),(18,102),(18,104)]
skips       = [2,1,2,1,2, 4, 2,1,2,1,2]
skip_cumuls = [sum(skips[:i + 1]) for i in range(len(skips))]
out_pixels  = [248 for i in range(width_1m * height_1m * 3)]
height_1k_minus_1 = height_1k - 1
width_1k_minus_1  = width_1k  - 1
for x_1m in range(10):
 print(x_1m)
 for y_1m in range(10):
  for x_10k in range(10):
   is_x_1m_multiple_of_2  = x_1m  % 2 == 0
   is_x_10k_multiple_of_2 = x_10k % 2 == 0
   is_checker_grey        = (x_10k + y_1m) % 2 == 0
   for y_1k in range(height_1k):
    for x_1k in range(width_1k):
     x = x_1k if (not is_x_1m_multiple_of_2) else width_1k_minus_1  - x_1k
     y = y_1k if (is_x_10k_multiple_of_2   ) else height_1k_minus_1 - y_1k
     draw_pixel(out_pixels, width_1m,
                x_1m * width_10k + skip_cumuls[x_1m] + x_10k * width_1k + x,
                y_1m * height_1k + skip_cumuls[y_1m]                    + y,
                '#000000' if ((x_1k + y_1k) % 2 == 0 and (x_1k, y_1k) not in excludess) else
                ('#eeeeee' if (is_checker_grey) else '#ffffff'))
f_out = png.Writer(width=width_1m, height=height_1m, alpha=False)
f_out.write_array(open('%s.png' % (__file__[:__file__.rfind('.')]), 'wb'), out_pixels)