Import Upstream version 5e2upstream/5e2

1 files changed, 82 insertions, 0 deletions

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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!)
+)
+