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clarify the word 'bitmap' in context of image tp

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Matthias Felleisen 2013-07-01 09:49:14 -04:00
parent 29b9a22d87
commit 4b78e61179
1 changed files with 8 additions and 4 deletions
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pkgs/htdp/teachpack/2htdp/scribblings/image.scrbl
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@ -58,10 +58,14 @@
@defmodule[#:require-form beginner-require 2htdp/image]
The image teachpack provides a number of basic image construction functions, along with
combinators for building more complex images out of existing images. Basic images include
various polygons, ellipses and circles, and text, as well as bitmaps (typically bitmaps
come about via the @onscreen{Insert Image...} menu item in DrRacket).
The image teachpack provides a number of basic image construction
functions, along with combinators for building more complex images out of
existing images. Basic images include various polygons, ellipses and
circles, and text, as well as bitmaps.@margin-note*{In the context of this
documentation, a @defterm{bitmap} denotes a special form of
@racket[image?], namely a collection of pixels associated with an image. It
does not refer to the @racket[bitmap%] class. Typically such image-bitmaps
come about via the @onscreen{Insert Image...} menu item in DrRacket}
Existing images can be rotated, scaled, flipped, and overlaid on top of each other.
@section{Basic Images}