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make first interaction more BSL-ish

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This commit is contained in:
Matthias Felleisen 2012-12-28 10:00:13 -05:00
parent 6ff9910874
commit 7a6054e2ba
1 changed files with 6 additions and 3 deletions
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9
collects/teachpack/2htdp/scribblings/image-guide.scrbl
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@ -163,9 +163,12 @@ This kind of rectangle is useful when putting rectangles next to each other
and avoiding extra thick lines on the interior. For example, consider and avoiding extra thick lines on the interior. For example, consider
building a grid like this: building a grid like this:
@image-interaction[(let* ([s (rectangle 20 20 "outline" "black")] @image-interaction[
[r (beside s s s s s s)]) (define s (square 20 'outline 'black))
(above r r r r r r))] (define r (beside s s s s s s s s s s))
(define q (above r r r r r r r r r r))
q
]
The reason interior lines in this grid are the same thickness as the lines around the edge The reason interior lines in this grid are the same thickness as the lines around the edge
is because the rectangles overlap with each other. is because the rectangles overlap with each other.