string animation

stranimate.rb

#!/usr/bin/env ruby
# -*- coding: utf-8 -*-
require 'RMagick'

FONTPATH = "/usr/share/fonts/takao-fonts/TakaoPMincho.ttf"

draw = Magick::Draw.new{
  self.font = FONTPATH
  self.fill = "black"
  self.gravity = Magick::CenterGravity
  self.pointsize = 64
}

gif = Magick::ImageList.new

ARGV[0].split("").each{|c|
  img = Magick::Image.new(72, 72){
    self.background_color = "white"
  }
  draw.annotate(img, 0, 0, 0, 0, c)
  gif << img
}

gif.iterations = 0
gif.delay = 60
gif.write ARGV[1]