Script for Displaying Images on #SIGNALconf Interactive Display

README.md

Notes

This requires you to have a few things:

1. A Mac
2. An iPhone
3. A US Cell Phone Number
4. Handoff Enabled on Your Mac/iPhone
5. A generous text message plan

Image

This script isn't currently doing any resizing. It assumes you're sending an image with the dimenions of 76x25. transparent pixels will be ommitted.

Command

With the required gems installed, you can run this by either making the script an executable, or invoking it through ruby and passing it the path to the image you want to display:

ruby display.rb unicorn.png

display.rb

require 'rmagick'

class Image
  attr_reader :filepath

  def initialize(filepath:)
    @filepath = filepath
  end

  def display
    image_file.each_pixel do |pixel, x, y|
      if pixel.opacity == 0
        send_message "Move #{x}, #{y}"
        send_message "Color #{pixel.to_color}"
      end
    end
  end

  private

  def image_file
    Magick::Image::read(filepath).first
  end

  def send_message(message)
    `osascript -e '\
      tell application "Messages" \
      to send "#{message}" \
      to buddy "744625"'`
    sleep 1
  end
end

image = Image.new(filepath: ARGV[0])
image.display