32 lines
No EOL
1.8 KiB
HTML
32 lines
No EOL
1.8 KiB
HTML
<!doctype html>
|
||
<html lang="en">
|
||
<head>
|
||
<meta charset="utf-8">
|
||
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||
<title>Math.ping_pong — Ludic</title>
|
||
<meta name="description" content="Bounce a counter back and forth in [0, len].">
|
||
<link rel="stylesheet" href="base.css">
|
||
<link rel="stylesheet" href="docs.css">
|
||
</head>
|
||
<body>
|
||
<header class="nav"><div class="wrap nav-in"><a class="brand" href="index.html"><span class="logo">L</span> Ludic</a><button class="nav-toggle" aria-label="Toggle menu" aria-expanded="false">☰</button><nav class="nav-links"><a href="index.html">Home</a><a href="api.html">API Reference</a><a class="nav-cta" href="https://git.workshopsoft.io/workshopsoft/ludic">Source ↗</a></nav></div></header>
|
||
<main class="wrap item">
|
||
<div class="crumbs"><a href="api.html">API Reference</a> <span>›</span> <a href="ns-math.html">Math</a> <span>›</span> <span class="here">Math.ping_pong</span></div>
|
||
<div class="item-head">
|
||
<span class="kind-badge kind-method">method</span>
|
||
<h1 id="top">Math.ping_pong</h1>
|
||
</div>
|
||
<code class="sig">Math.ping_pong(t, len) -> int</code>
|
||
<div class="desc"><p>Maps an ever-increasing counter <code>t</code> to a value that rises from <code>0</code> to <code>len</code> and back, bouncing forever — the triangle wave to <code>Math.wrap</code>'s sawtooth. Feed it a frame counter to drive a patrol, a pulsing highlight, or a back-and-forth sweep without tracking direction yourself.</p></div>
|
||
|
||
<div class="examples"><h2>Example</h2><pre data-lang="ludic">program Demo {
|
||
handler Step phase Update {
|
||
let phase = Math.ping_pong(frame, 30)
|
||
}
|
||
}</pre></div>
|
||
|
||
<a class="back" href="api.html">← All symbols</a>
|
||
</main>
|
||
<script src="ludic-highlight.js"></script>
|
||
<script>Ludic.highlightAll(); Ludic.installCards(); Ludic.flashTarget();</script>
|
||
</body></html> |