From ae2b295c7deaf2d7c18ad1ed9b6050970e56bae7 Mon Sep 17 00:00:00 2001
From: Bryan Newbold <bnewbold@robocracy.org>
Date: Mon, 20 Feb 2017 00:05:31 -0800
Subject: Import Upstream version 5e2

---
 grtest.scm | 82 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 grtest.scm

(limited to 'grtest.scm')

diff --git a/grtest.scm b/grtest.scm
new file mode 100644
index 0000000..7401308
--- /dev/null
+++ b/grtest.scm
@@ -0,0 +1,82 @@
+
+; 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!)
+)
+
-- 
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