(use srfi-4 parametric-curve)

(define my-c (linear-curve 3 '((0 3) (0 4) (1 0)) 0 20))
(define my-scaled-c (scale-curve '(1. 1. 5.) my-c))

(printf "my-c (5) = ~A~%" ((sample-curve my-c) 5))
(printf "my-c (0,5,10,15,20) = ~A~%" ((sample-curve* my-c) (list 0 5 10 15 20)))
(printf "my-c bbox = ~A~%" (bbox-curve my-c))

(printf "my-scaled-c (5) = ~A~%" ((sample-curve my-scaled-c) 5))
(printf "my-scaled-c (0,5,10,15,20) = ~A~%" ((sample-curve* my-scaled-c) (list 0 5 10 15 20)))
(printf "my-scaled-c bbox = ~A~%" (bbox-curve my-scaled-c))


(assert (every (lambda (x y) (< (abs (- x y)) 1e-15)) ((sample-curve my-c) 5) (list 3. 4. 5.)))
(assert (every
	 (lambda (xv yv) (map (lambda (x y) (< (abs (- x y)) 1e-15)) (f64vector->list xv) (f64vector->list yv)))
	 ((sample-curve* my-c) (list 0 5 10 15 20)) 
	 (list (f64vector 3.0 3.0 3.0 3.0 3.0)
	       (f64vector 4.0 4.0 4.0 4.0 4.0)
	       (f64vector 0.0 5.0 10.0 15.0 20.0)
	       )))

(assert (every (lambda (x y) (< (abs (- x y)) 1e-15)) ((sample-curve my-scaled-c) 5) (list 3. 4. 25.)))
(assert (every
	 (lambda (xv yv) (map (lambda (x y) (< (abs (- x y)) 1e-15)) (f64vector->list xv) (f64vector->list yv)))
	 ((sample-curve* my-scaled-c) (list 0 5 10 15 20)) 
	 (list (f64vector 3.0 3.0 3.0 3.0 3.0)
	       (f64vector 4.0 4.0 4.0 4.0 4.0)
	       (f64vector 0.0 25.0 50.0 75.0 100.0)
	       )))

(printf "my-scaled-c = ~A~%" my-scaled-c)

(printf "iterate my-scaled-c = ~A~%" (iterate-curve my-scaled-c 5))

(define s (line-segment 3 (list 1 2 3)))

(printf "line segment = ~A~%" s)

(define ts (translate-curve (list 4 5 6) s))

(printf "translated line segment = ~A~%" ts)

(printf "iterate translated line segment = ~A~%" (iterate-curve ts 5))