MOOCROP - Creates detail views of high-resolution photos suitable for creating moocards

moocrop.rb

#!/usr/bin/env ruby

# MOOCROP
#
# Results: http://ueberredungskunst.aadabay.com/moo-minicards
#
# Creates detail views of high-resolution photos suitable for creating moocards
# Slices in variations of top-left corner and scale
#
# Results after first order (used http://aadabay.com/ paintings: WOW!)

MINICARDS = 874, 378
BUSINESSCARDS = 1039, 697

EASES = [0.1, 0.2, 0.25, 0.3, 0.4, 0.5, 0.75, 1.0]

if ARGV.length < 2:
  puts 'Usage: moocrop.rb times file [file ...]'
  exit 1
end

def moocrop(count)
  imgfile = ARGV[count % ARGV.length]

  moowidth, mooheight = MINICARDS

  width, height = `identify #{imgfile}`.split()[2].split("x")

  ease = EASES[rand(EASES.length)]

  targetwidth =  moowidth + (Integer(rand(Integer(width)-moowidth) * ease))
  targetheight = Integer(mooheight * (targetwidth / Float(moowidth)))

  startwith = rand(Integer(width)-targetwidth)
  startheight = rand(Integer(height)-targetheight)

  basename = File.basename(imgfile, File.extname(imgfile))

  cmdline = (
    "convert #{imgfile} -crop " +
    "#{targetwidth}x#{targetheight}+#{startwith}+#{startheight} " +
    "-resize #{moowidth}x#{mooheight} " +
    "moocrop-#{basename}-#{startwith}-#{startheight}.png"
  )

  puts cmdline
  system cmdline
end

count = 0
Integer(ARGV.shift).times {
  count += 1
  moocrop count
}