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diff --git a/manuals/chickadee/Tweening.html b/manuals/chickadee/Tweening.html deleted file mode 100644 index b69b75e..0000000 --- a/manuals/chickadee/Tweening.html +++ /dev/null @@ -1,123 +0,0 @@ -<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> -<html> -<!-- Copyright (C) 2017-2023 David Thompson dthompson2@worcester.edu - -Permission is granted to copy, distribute and/or modify this document -under the terms of the GNU Free Documentation License, Version 1.3 -or any later version published by the Free Software Foundation; -with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. -A copy of the license is included in the section entitled "GNU -Free Documentation License". - -A copy of the license is also available from the Free Software -Foundation Web site at http://www.gnu.org/licenses/fdl.html. - - -* Chickadee: (chickadee). Game programming toolkit for Guile. - -The document was typeset with -http://www.texinfo.org/ (GNU Texinfo). - --> -<!-- Created by GNU Texinfo 6.7, http://www.gnu.org/software/texinfo/ --> -<head> -<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> -<title>Tweening (The Chickadee Game Toolkit)</title> - -<meta name="description" content="Tweening (The Chickadee Game Toolkit)" /> -<meta name="keywords" content="Tweening (The Chickadee Game Toolkit)" /> -<meta name="resource-type" content="document" /> -<meta name="distribution" content="global" /> -<meta name="Generator" content="makeinfo" /> -<link href="index.html" rel="start" title="Top" /> -<link href="Index.html" rel="index" title="Index" /> -<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents" /> -<link href="Scripting.html" rel="up" title="Scripting" /> -<link href="Channels.html" rel="next" title="Channels" /> -<link href="Scripts.html" rel="prev" title="Scripts" /> -<style type="text/css"> -<!-- -a.summary-letter {text-decoration: none} -blockquote.indentedblock {margin-right: 0em} -div.display {margin-left: 3.2em} -div.example {margin-left: 3.2em} -div.lisp {margin-left: 3.2em} -kbd {font-style: oblique} -pre.display {font-family: inherit} -pre.format {font-family: inherit} -pre.menu-comment {font-family: serif} -pre.menu-preformatted {font-family: serif} -span.nolinebreak {white-space: nowrap} -span.roman {font-family: initial; font-weight: normal} -span.sansserif {font-family: sans-serif; font-weight: normal} -ul.no-bullet {list-style: none} -@media (min-width: 1140px) { - body { - margin-left: 14rem; - margin-right: 4rem; - max-width: 52rem; - } -} - -@media (min-width: 800px) and (max-width: 1140px) { - body { - margin-left: 6rem; - margin-right: 4rem; - max-width: 52rem; - } -} - -@media (max-width: 800px) { - body { - margin: 1rem; - } -} - ---> -</style> -<link rel="stylesheet" type="text/css" href="https://dthompson.us/css/dthompson.css" /> - - -</head> - -<body lang="en"> -<span id="Tweening"></span><div class="header"> -<p> -Next: <a href="Channels.html" accesskey="n" rel="next">Channels</a>, Previous: <a href="Scripts.html" accesskey="p" rel="prev">Scripts</a>, Up: <a href="Scripting.html" accesskey="u" rel="up">Scripting</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index.html" title="Index" rel="index">Index</a>]</p> -</div> -<hr /> -<span id="Tweening-1"></span><h4 class="subsection">5.5.3 Tweening</h4> - -<p>Tweening is the process of transitioning something from an initial -state to a final state over a pre-determined period of time. In other -words, tweening is a way to create animation. The <code>tween</code> -procedure can be used within any script like so: -</p> -<div class="lisp"> -<pre class="lisp"><span class="syntax-open">(</span><span class="syntax-special">define</span> <span class="syntax-symbol">x</span> <span class="syntax-symbol">0</span><span class="syntax-close">)</span> -<span class="syntax-open">(</span><span class="syntax-symbol">script</span> - <span class="syntax-comment">;; 0 to 100 in 60 ticks of the agenda. -</span> <span class="syntax-open">(</span><span class="syntax-symbol">tween</span> <span class="syntax-symbol">60</span> <span class="syntax-symbol">0</span> <span class="syntax-symbol">100</span> <span class="syntax-open">(</span><span class="syntax-special">lambda</span> <span class="syntax-open">(</span><span class="syntax-symbol">y</span><span class="syntax-close">)</span> <span class="syntax-open">(</span><span class="syntax-symbol">set!</span> <span class="syntax-symbol">x</span> <span class="syntax-symbol">y</span><span class="syntax-close">)</span><span class="syntax-close">)</span><span class="syntax-close">)</span><span class="syntax-close">)</span> -</pre></div> - -<dl> -<dt id="index-tween">Procedure: <strong>tween</strong> <em>duration start end proc [#:step <code>1</code>] [#:ease <code>smoothstep</code>] #:interpolate <code>lerp</code>]</em></dt> -<dd><p>Transition a value from <var>start</var> to <var>end</var> over <var>duration</var>, -sending each succesive value to <var>proc</var>. <var>step</var> controls the -amount of time between each update of the animation. -</p> -<p>To control how the animation goes from the initial to final state, an -“easing” procedure may be specified. By default, the -<code>smoothstep</code> easing is used, which is a more pleasing default -than a simplistic linear function. See <a href="Easings.html">Easings</a> for a complete list -of available easing procedures. -</p> -<p>The <var>interpolate</var> procedure computes the values in between -<var>start</var> and <var>end</var>. By default, linear interpolation (“lerp” -for short) is used. -</p></dd></dl> - - - - -</body> -</html> |