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-rw-r--r--ex/2/50.rkt9
1 files changed, 9 insertions, 0 deletions
diff --git a/ex/2/50.rkt b/ex/2/50.rkt
index d2b91a6..6db473d 100644
--- a/ex/2/50.rkt
+++ b/ex/2/50.rkt
@@ -16,14 +16,23 @@
(sub-vect (m corner1) new-origin)
(sub-vect (m corner2) new-origin)))))))
+
(define (flip-vert painter)
(transform-painter painter
(make-vect 0.0 1.0)
(make-vect 1.0 1.0)
(make-vect 0.0 0.0)))
+
(define (flip-horiz painter)
(transform-painter painter
(make-vect 1.0 0.0)
(make-vect 0.0 0.0)
(make-vect 1.0 1.0)))
+
+
+(define (counterclockwise-180 painter)
+ (transform-painter painter
+ (make-vect 1.0 1.0)
+ (make-vect 0.0 1.0)
+ (make-vect 1.0 0.0)))