;; Hue shift effect - rotates hue values
;; @param degrees float [0, 360] default 0
;; @param speed float default 0 - rotation per second
;; Uses vectorized shift-hsv primitive for fast processing

(define-effect hue_shift
  ((degrees 0) (speed 0))
  (let ((shift (+ degrees (* speed t))))
    (shift-hsv frame shift 1 1)))