gistfile1.rb

def self.new_image(images, uid)
  final = Magick::Image.new(1000, 600).matte_reset!
  last = images.length - 1

  images.each_with_index do |image, index|
    o = image[1]

    n = Magick::Image.read($dir+'/'+o[:src]).first
    n.scale!(200, o[:height].to_i)

    x = o[:x].to_i
    y = o[:y].to_i

    final.composite!(n, Magick::NorthWestGravity, x, y, Magick::OverCompositeOp)
    final.format = 'jpeg'

    pp final

    if index == last
      final.write($dir+'/'+uid+'/_final.jpg')
    end
  end

  $dir+'/'+uid+'/_final.jpg'
end