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; This is a quick hack to test the graphics primitives.
; The SLIB scheme library is needed for random.
; IMHO, the syntax of `do' in scheme is horrible!
; - sjm
(define (grtest)
(require 'random) ; needs SLIB
(graphics-mode!)
(display "testing draw-to") (newline)
(clear-graphics!)
(goto-center!)
(do ((x 0 (+ x 3)))
((> x (max-x)) 0)
(set-color! (remainder (/ x 3) (max-color)))
(draw-to x 0)
(draw-to x (max-y))
)
(do ((y 0 (+ y 3)))
((> y (max-y)) 0)
(set-color! (remainder (/ y 3) (max-color)))
(goto-center!)
(draw-to! 0 y)
(goto-center!)
(draw-to! (max-x) y)
)
(goto-nw!)
(do ((x 0 (+ x 2)))
((> x (max-x)) 0)
(set-color! (remainder (/ x 2) (max-color)))
(draw-to x (max-y))
)
(do ((y (+ (max-y) 1) (- y 2)))
((< y 0) 0)
(set-color! (remainder (/ y 2) (max-color)))
(draw-to (max-x) y)
)
(display "testing set-dot!") (newline)
(clear-graphics!)
(do ((x 0 (+ x 1)))
((= x 100) 0)
(set-dot! (+ (random (max-x)) 1) (+ (random (max-y)) 1)
(+ (random (max-color)) 1))
)
(display "testing draw with turn-to!") (newline)
(clear-graphics!)
(goto-center!)
(do ((x 0 (+ x 1)))
((= x 100) 0)
(set-color! (+ (random (max-color)) 1))
(turn-to! (random 360))
(draw (random 50))
)
(display "testing draw with turn-right") (newline)
(clear-graphics!)
(goto-center!)
(do ((x 0 (+ x 1)))
((= x 100) 0)
(set-color! (+ (random (max-color)) 1))
(turn-right (random 90))
(draw (random 50))
)
(display "testing draw with turn-left") (newline)
(clear-graphics!)
(goto-center!)
(do ((x 0 (+ x 1)))
((= x 100) 0)
(set-color! (+ (random (max-color)) 1))
(turn-left (random 90))
(draw (random 50))
)
(text-mode!)
)
|
