34 lines
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2.1 KiB
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34 lines
No EOL
2.1 KiB
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<title>Math.round — Ludic</title>
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<meta name="description" content="Round a fixed value to the nearest whole int.">
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<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>
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<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.round</span></div>
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<div class="item-head">
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<span class="kind-badge kind-method">method</span>
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<h1 id="top">Math.round</h1>
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</div>
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<code class="sig">Math.round(x) -> int</code>
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<div class="desc"><p>Takes a <code>fixed</code> value and returns the nearest <code>int</code>, with halves rounding up: <code>Math.round(2.5)</code> is <code>3</code> and <code>Math.round(2.4)</code> is <code>2</code>. Choose it over <code>Math.floor</code> when you want the closest whole value rather than always the lower one — snapping a smoothly-moving sprite to a pixel, or reporting a fractional total as a clean number.</p></div>
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<div class="params"><h2>Parameters</h2><div class="param" id="param-x"><code class="pname">x</code><span class="pdesc">the <code>fixed</code> value to round to nearest</span></div></div>
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<div class="examples"><h2>Example</h2><pre data-lang="ludic">program SnapToPixel {
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var smooth_x: fixed = 10.5
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handler Draw phase Render {
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let px = Math.round(smooth_x) # 11
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}
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}</pre></div>
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