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run-simulation -> animate

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svn: r15995
This commit is contained in:
Matthias Felleisen 2009-09-14 00:59:45 +00:00
parent 03134e9107
commit 73e9e77830
1 changed files with 9 additions and 3 deletions
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12
collects/teachpack/2htdp/scribblings/universe.scrbl
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@ -89,7 +89,7 @@ The simplest kind of animated @tech{world} program is a time-based
supply a function that creates a scene for each natural number. By handing
this function to the teachpack displays the simulation.
@defproc[(run-simulation [create-image (-> natural-number/c scene)])
@defproc[(animate [create-image (-> natural-number/c scene)])
true]{
opens a canvas and starts a clock that tick 28 times per second. Every
@ -97,7 +97,7 @@ The simplest kind of animated @tech{world} program is a time-based
number of ticks passed since this function call. The results of these
function calls are displayed in the canvas. The simulation runs until you
click the @tt{Stop} button in DrScheme or close the window. At that
point, @scheme[run-simulation] returns the number of ticks that have
point, @scheme[animate] returns the number of ticks that have
passed.
}
@ -110,9 +110,15 @@ Example:
(overlay (circle 10 'solid 'green)
(rectangle 40 4 'solid 'green)))
(run-simulation create-UFO-scene)
(animate create-UFO-scene)
]
@defproc[(run-simulation [create-image (-> natural-number/c scene)])
true]{
@scheme[animate] was originally called @scheme[run-simulation], and this
binding is retained for backwards compatibility}
@;-----------------------------------------------------------------------------
@section[#:tag "interactive"]{Interactions}