intros.rb

require 'rubygems'
require 'hpricot'
require 'yaml'

task :convert_data do
  doc = Hpricot(File.open('b00h752w.html'))
  artists = (doc/'//a').map { |a| { :link =>a['href'], :name => a.inner_html, :offset => nil } }
  File.open('data.yml', 'w') { |file| file.puts artists.to_yaml }
end

task :fetch_artists do
  artists = YAML.load_file('data.yml')
  artists[0,10].each do |artist|
    gid = artist[:link].sub('http://www.bbc.co.uk/music/artists/', '')
    `CutyCapt --out=artists/#{gid}.png --url=#{artist[:link]}`
  end
end

task :crop_images do
  artists = YAML.load_file('data.yml')
  artists[0,10].each do |artist|
    gid = artist[:link].sub('http://www.bbc.co.uk/music/artists/', '')
    `convert -crop '974x548+0+111!' artists/#{gid}.png cropped/#{gid}.png`
  end
end

task :draw_background do
  `convert -size 974x548 xc:none -fill white -draw 'rectangle 0,0 974,548' background.png`
end

task :compose_images do
  artists = YAML.load_file('data.yml')
  artists[0,10].each do |artist|
    gid = artist[:link].sub('http://www.bbc.co.uk/music/artists/', '')
    `composite -compose src-over -size 974x548 cropped/#{gid}.png background.png composed/#{gid}.png`
  end
end

task :setup_frames do
  artists = YAML.load_file('data.yml')
  offset = 0
  `rm frames/*`
  artists[0,10].each do |artist|
    gid = artist[:link].sub('http://www.bbc.co.uk/music/artists/', '')
    `ln composed/#{gid}.png frames/image#{artist[:offset]}.png`
  end
end