端末のウィンドウが勝手にびよんびよんなってたのしいやつ

byonbyon.rb

#!/usr/bin/env ruby
# License: CC0

include Math

STDOUT.sync = 1

case `env LC_ALL=C stty -a`
when / (\d+) rows; (\d+) columns/
  rows = $1.to_i
  cols = $2.to_i
when /rows (?:= )?(\d+); columns (?:= )?(\d+)/
  rows = $1.to_i
  cols = $2.to_i
else
  STDERR.puts "Can't get stty result"
  exit 1
end

def resize_term(rows, cols)
  print "\e[8;#{rows};#{cols}t"
end

i = 0
s = 10

trap(:INT) {
  resize_term(rows, cols)
  exit 0
}

while true
  r = rows + (cos(PI*(i*s)/180) * 10).to_i
  c = cols + (sin(PI*(i*s)/180) * 10).to_i
  resize_term(r, c)
  i += 1
  sleep 0.05
end