# img2boxshadow.rb
### a ruby script to convert images to CSS (box-shadows)


__Installation__

    gem install rmagick    # you'll need ImageMagick & Ruby first
    gem install colormath
    gem install micro-optparse


__Usage__

How to run the script:

    ruby img2boxshadow.rb -i <input> -o <output>

For large images, it's best to use an emulated pixel size, which takes _n_ amount of pixels and blends them into one. Your output will be __much__ smaller, but resolution will be lower. The following will combine a 4x4 pixel square into one box shadow statement.

    ruby img2boxshadow.rb -i <input> -o <output> -p 4


The [demo on CodePen](http://codepen.io/briangonzalez/details/AvrGI#pen-details-tab) uses the following settings:

    ruby img2boxshadow.rb -i img/woman_small.jpeg -o output.css -p 5 -s 3 -b 1 -g '#000'


_Options:_

    -p, --pixel-size 2               emulated pixel size
    -s, --pixel-spacing -1           pixel spacing
    -b, --blur 0                     pixel blur
    -g, --background white           background color
    -i, --input                      input file
    -o, --output                     output css
    -h, --help                       Show this message
    -v, --version                    Print version