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	<title>IESSpotLightNode - Three.js Docs</title>
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		<p class="inheritance" translate="no"><a href="EventDispatcher.html">EventDispatcher</a> → <a href="Node.html">Node</a> → <a href="LightingNode.html">LightingNode</a> → <a href="AnalyticLightNode.html">AnalyticLightNode</a> → <a href="SpotLightNode.html">SpotLightNode</a> → </p>
	<h1 translate="no">IESSpotLightNode</h1>
		<section>
			<header>
				<div class="class-description"><p>An IES version of the default spot light node.</p></div>
			</header>
			<article>
				<div class="container-overview">
					<h2>Constructor</h2>
					<h3 class="name name-method" id="IESSpotLightNode" translate="no">new <a href="#IESSpotLightNode">IESSpotLightNode</a><span class="signature">()</span> </h3>
					<div class="method">
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				<h2 class="subsection-title">Methods</h2>
					<h3 class="name name-method" id="getSpotAttenuation" translate="no">.<a href="#getSpotAttenuation">getSpotAttenuation</a><span class="signature">( builder : <span class="param-type"><a href="NodeBuilder.html">NodeBuilder</a></span>, angleCosine : <span class="param-type"><a href="Node.html">Node</a>.&lt;float></span> )</span><span class="type-signature"> : <a href="Node.html">Node</a>.&lt;float></span> </h3>
					<div class="method">
						<div class="description">
							<p>Overwrites the default implementation to compute an IES conform spot attenuation.</p>
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						<table class="params">
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									<td class="name">
										<strong>builder</strong>
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									<td class="description last">
										<p>The node builder.</p>
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								</tr>
								<tr>
									<td class="name">
										<strong>angleCosine</strong>
									</td>
									<td class="description last">
										<p>The angle to compute the spot attenuation for.</p>
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								</tr>
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						<dl class="details">
							<dt class="tag-overrides"><strong>Overrides:</strong> <a href="SpotLightNode.html#getSpotAttenuation">SpotLightNode#getSpotAttenuation</a></dt>
						</dl>
						<dl class="details">
							<dt class="tag-returns"><strong>Returns:</strong> The spot attenuation.</dt>
						</dl>
					</div>
				<h2 class="subsection-title">Source</h2>
				<p>
					<a href="https://github.com/mrdoob/three.js/blob/master/src/nodes/lighting/IESSpotLightNode.js" translate="no" target="_blank" rel="noopener">src/nodes/lighting/IESSpotLightNode.js</a>
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