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-rw-r--r--grtest.scm82
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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!)
-)
-