GTK+ で落書き 15

oekaki_sample19a.rb

require 'oekaki'

Oekaki.app width: 500, height: 500 do
  draw { clear(color(0x1694, 0x3447, 0x8d60)) }
  
  t = Oekaki::Turtle.new
  t.color(0xfe5f, 0xaa9a, 0x212a)
  ln = 10
  
  e = Enumerator.new do |y|
    60.times do
      4.times do
        y << proc {
               t.forward(ln)
               t.left(90)
             }
      end
      t.left(6)
      ln += 4
    end
  end
  
  id = timer(150) do
    e.next.call rescue timer_stop(id)
  end
end