slime/bin/tests/class_macro.slime

(import "oo.slime")

(define-class vector3 (x y z)
  (define (get-x) x)
  (define (get-y) y)
  (define (get-z) z)

  (define (set-x new-x) (mutate x new-x))
  (define (set-y new-y) (mutate y new-y))
  (define (set-z new-z) (mutate z new-z))

  (define (length)
    (** (+ (* x x) (* y y) (* z z)) 0.5))

  (define (scale fac)
    (mutate x (* fac x))
    (mutate y (* fac y))
    (mutate z (* fac z))
    fac)

  (define (add other)
    (make-vector3
     (+ x (other get-x))
     (+ y (other get-y))
     (+ z (other get-z))))

  (define (subtract other)
    (make-vector3
     (- x (other get-x))
     (- y (other get-y))
     (- z (other get-z))))

  (define (scalar-product other)
    (+ (* x (other get-x))
       (* y (other get-y))
       (* z (other get-z))))

  (define (cross-product other)
    (make-vector3
     (- (* y (other get-z)) (* z (other get-y)))
     (- (* z (other get-x)) (* x (other get-z)))
     (- (* x (other get-y)) (* y (other get-x)))))

  (define (print)
    (printf :sep "" "[vector3] (" x  y  z ")"))
  )

(define v1 (make-vector3 1 2 3))
(define v2 (make-vector3 3 2 1))

(assert (= (type v1) (type v2) :vector3))
(assert (= (v1 scalar-product v2) 10))