mixfavicon.rb

require 'rmagick'

dir = "/Users/itochan/Downloads/favicon"

# csv = CSV.read("#{dir}/../top-1m.csv")

pixels = []
64.times do |i|
  pixels[i] = []
end
colors = []

Dir::glob("#{dir}/icons/*").each do |file|
  puts file
  img = Magick::Image.read(file).last
  img.resize!(64, 64) if img.columns != 64 && img.rows != 64

  64.times do |i|
    colors[file][i] = []
  end

  img.each_pixel do |pixel, x, y|
    current = img.pixel_color(x, y)
    pixel = pixels[x][y]
    if pixel
      red = current.red
      green = current.green
      blue = current.blue
      pixels[x][y] = Magick::Pixel.new(
        (red + pixel.red) / 2,
        (green + pixel.green) / 2,
        (blue + pixel.blue) / 2)
    else
      pixels[x][y] = current
    end
  end
end

output_img = Magick::Image.new(64, 64)
output_img.each_pixel do |pixel, x, y|
  pixel = pixels[x][y]
  color = Magick::Pixel.new(
    pixel.red,
    pixel.green,
    pixel.blue
  )

  output_img.pixel_color(x, y, color)
end

output_img.write("#{dir}/output.png")