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diff --git a/manuals/sly/Tweening.html b/manuals/sly/Tweening.html new file mode 100644 index 0000000..9b0b741 --- /dev/null +++ b/manuals/sly/Tweening.html @@ -0,0 +1,101 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Copyright (C) 2013, 2014 David Thompson davet@gnu.org + +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. + + +The document was typeset with +http://www.texinfo.org/ (GNU Texinfo). + --> +<!-- Created by GNU Texinfo 6.0, http://www.gnu.org/software/texinfo/ --> +<head> +<title>Sly: Tweening</title> + +<meta name="description" content="Sly: Tweening"> +<meta name="keywords" content="Sly: Tweening"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<meta charset="UTF-8"> +<link href="index.html#Top" rel="start" title="Top"> +<link href="Index.html#Index" rel="index" title="Index"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="Tweens.html#Tweens" rel="up" title="Tweens"> +<link href="Quaternions.html#Quaternions" rel="next" title="Quaternions"> +<link href="Easings.html#Easings" rel="prev" title="Easings"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.indentedblock {margin-right: 0em} +blockquote.smallindentedblock {margin-right: 0em; font-size: smaller} +blockquote.smallquotation {font-size: smaller} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +div.smalldisplay {margin-left: 3.2em} +div.smallexample {margin-left: 3.2em} +div.smalllisp {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} +pre.smalldisplay {font-family: inherit; font-size: smaller} +pre.smallexample {font-size: smaller} +pre.smallformat {font-family: inherit; font-size: smaller} +pre.smalllisp {font-size: smaller} +span.nocodebreak {white-space: nowrap} +span.nolinebreak {white-space: nowrap} +span.roman {font-family: serif; font-weight: normal} +span.sansserif {font-family: sans-serif; font-weight: normal} +ul.no-bullet {list-style: none} +--> +</style> + + +</head> + +<body lang="en"> +<a name="Tweening"></a> +<div class="header"> +<p> +Previous: <a href="Easings.html#Easings" accesskey="p" rel="prev">Easings</a>, Up: <a href="Tweens.html#Tweens" accesskey="u" rel="up">Tweens</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index.html#Index" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="Tweening-1"></a> +<h4 class="subsubsection">4.2.4.2 Tweening</h4> + +<p>The <code>tween</code> procedure creates new procedures to be used for +animation. For example, the code below creates a tween procedure that +linearly interpolates (0, 0) to (10, 10) over the course of ten ticks. +</p> +<div class="example"> +<pre class="example">(define t (tween vlerp ease-linear (vector2 0 0) (vector2 10 0) 10)) + +(t 5) ;; => (vector2 5 5) +</pre></div> + +<dl> +<dt><a name="index-tween"></a>Scheme Procedure: <strong>tween</strong> <em><var>interpolator</var> <var>ease</var> <var>start</var> <var>end</var> <var>duration</var></em></dt> +<dd><p>Return a procedure that interpolates from <var>start</var> to <var>end</var> in +<var>duration</var> ticks. The value returned for a given time is +determined by applying <var>ease</var> with the time ratio to acquire an +<var>alpha</var> value, and then applying <var>interpolator</var> with +<var>start</var>, <var>end</var>, and <var>alpha</var>. <var>alpha</var> is a rational +number in the range [0, 1]. +</p></dd></dl> + + + + +</body> +</html> |