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adjust the sierpinski carpet examples to be bitmaps

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This saves about 10 megs (from 16 or 6 ish) in the space
taken for the teachapack guide docs and seems to make the
guide page load a bunch faster
This commit is contained in:
Robby Findler 2013-11-06 10:05:46 -06:00
parent eed601852f
commit 9bc8ce1482
1 changed files with 20 additions and 9 deletions
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29
pkgs/htdp-pkgs/htdp-doc/teachpack/2htdp/scribblings/image-guide.scrbl
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@ -26,6 +26,13 @@
(image-interaction exp ...)
(interaction #:eval guide-eval exp ...))
@(define-syntax-rule
(image-interaction/bitmap exp)
(interaction #:eval guide-eval
(eval:alts exp (make-object bitmap%
(open-input-bytes (convert exp 'png-bytes))
'png/alpha))))
@(define-syntax-rule
(image-interaction/margin num exp)
(begin
@ -35,7 +42,11 @@
(guide-eval '(extra-margin 0))))
@(interaction-eval #:eval guide-eval
(require racket/list racket/local))
(require racket/list
racket/local
file/convertible
(only-in racket/draw bitmap%)
racket/class))
@title[#:style (style "svg" (list (render-pict-as 'svg-images)))
#:tag "image-guide"]{Image Guide}
@ -283,7 +294,7 @@ library, e.g.:
(beside c i c)
(beside c c c)))]))]
@image-interaction[(sierpinski-carpet 5)]
@image-interaction/bitmap[(sierpinski-carpet 5)]
We can adjust the carpet to add a little color:
@ -298,13 +309,13 @@ We can adjust the carpet to add a little color:
(beside c i c)
(beside c c c)))]))]
@image-interaction[(colored-carpet
(list (color #x33 #x00 #xff)
(color #x66 #x00 #xff)
(color #x99 #x00 #xff)
(color #xcc #x00 #xff)
(color #xff #x00 #xff)
(color 255 204 0)))]
@image-interaction/bitmap[(colored-carpet
(list (color #x33 #x00 #xff)
(color #x66 #x00 #xff)
(color #x99 #x00 #xff)
(color #xcc #x00 #xff)
(color #xff #x00 #xff)
(color 255 204 0)))]
The Koch curve can be constructed by simply placing four
curves next to each other, rotated appropriately: