CodeBrawl entry for "Pixelizing images with ChunkyPNG"

output.png

pixellate.rb

require 'chunky_png'

def pixellate(tile_size = 10)
  tile_length = ((tile_size * tile_size) - 1)

  image = ChunkyPNG::Image.from_file('input.png')

  rework = image.resample_nearest_neighbor(image.width / tile_size, image.height / tile_size)

  rework.height.times do |y|
    rework.width.times do |x|
      flat_pixel = rework[x, y]
      (0..tile_length).each do |off|
        image[(x * tile_size) + (off / tile_size), (y * tile_size) + (off % tile_size)] = flat_pixel
      end
    end
  end

  image.save('output.png')
end