; animated recusive spiral
; by @local_guru 
(clear) 
(defn rec 
  (v) 
  (if 
    (gt v 0) 
    (
      (stroke 
        (circle 
          (add 375 
            (mul 
              (cos 
                (add 
                  (div v 17) 
                  (div 
                    (time) 2000))) 
              (div v 2))) 
          (add 300 
            (mul 
              (sin 
                (div v 11)) 
              (div v 2))) 
          (div v 2)) 1 "rgba
        (114,222, 194,0.1)") 
      (rec 
        (sub v 0.3))))) 
; set false to stop 
(animate true) 
(rec 300)