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	<title>ArrowHelper - Three.js Docs</title>
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		<p class="inheritance" translate="no"><a href="EventDispatcher.html">EventDispatcher</a> → <a href="Object3D.html">Object3D</a> → </p>
	<h1 translate="no">ArrowHelper</h1>
		<section>
			<header>
				<div class="class-description"><p>An 3D arrow object for visualizing directions.</p></div>
				<h2>Code Example</h2>
				<div translate="no"><pre><code class="language-js">const dir = new THREE.Vector3( 1, 2, 0 );
//normalize the direction vector (convert to vector of length 1)
dir.normalize();
const origin = new THREE.Vector3( 0, 0, 0 );
const length = 1;
const hex = 0xffff00;
const arrowHelper = new THREE.ArrowHelper( dir, origin, length, hex );
scene.add( arrowHelper );
</code></pre></div>
			</header>
			<article>
				<div class="container-overview">
					<h2>Constructor</h2>
					<h3 class="name name-method" id="ArrowHelper" translate="no">new <a href="#ArrowHelper">ArrowHelper</a><span class="signature">( dir : <span class="param-type"><a href="Vector3.html">Vector3</a></span>, origin : <span class="param-type"><a href="Vector3.html">Vector3</a></span>, length : <span class="param-type">number</span>, color : <span class="param-type">number | <a href="Color.html">Color</a> | string</span>, headLength : <span class="param-type">number</span>, headWidth : <span class="param-type">number</span> )</span> </h3>
					<div class="method">
						<div class="description">
							<p>Constructs a new arrow helper.</p>
						</div>
						<table class="params">
							<tbody>
								<tr>
									<td class="name">
										<strong>dir</strong>
									</td>
									<td class="description last">
										<p>The (normalized) direction vector.</p>
										<p>Default is <code>(0, 0, 1)</code>.</p>
									</td>
								</tr>
								<tr>
									<td class="name">
										<strong>origin</strong>
									</td>
									<td class="description last">
										<p>Point at which the arrow starts.</p>
										<p>Default is <code>(0, 0, 0)</code>.</p>
									</td>
								</tr>
								<tr>
									<td class="name">
										<strong>length</strong>
									</td>
									<td class="description last">
										<p>Length of the arrow in world units.</p>
										<p>Default is <code>1</code>.</p>
									</td>
								</tr>
								<tr>
									<td class="name">
										<strong>color</strong>
									</td>
									<td class="description last">
										<p>Color of the arrow.</p>
										<p>Default is <code>0xffff00</code>.</p>
									</td>
								</tr>
								<tr>
									<td class="name">
										<strong>headLength</strong>
									</td>
									<td class="description last">
										<p>The length of the head of the arrow.</p>
										<p>Default is <code>length*0.2</code>.</p>
									</td>
								</tr>
								<tr>
									<td class="name">
										<strong>headWidth</strong>
									</td>
									<td class="description last">
										<p>The width of the head of the arrow.</p>
										<p>Default is <code>headLength*0.2</code>.</p>
									</td>
								</tr>
							</tbody>
						</table>
					</div>
				</div>
				<h2 class="subsection-title">Properties</h2>
				<div class="member">
					<h3 class="name" id="cone" translate="no">.<a href="#cone">cone</a><span class="type-signature"> : <a href="Mesh.html">Mesh</a></span> </h3>
					<div class="description">
						<p>The cone part of the arrow helper.</p>
					</div>
				</div>
				<div class="member">
					<h3 class="name" id="line" translate="no">.<a href="#line">line</a><span class="type-signature"> : <a href="Line.html">Line</a></span> </h3>
					<div class="description">
						<p>The line part of the arrow helper.</p>
					</div>
				</div>
				<h2 class="subsection-title">Methods</h2>
					<h3 class="name name-method" id="dispose" translate="no">.<a href="#dispose">dispose</a><span class="signature">()</span> </h3>
					<div class="method">
						<div class="description">
							<p>Frees the GPU-related resources allocated by this instance. Call this
method whenever this instance is no longer used in your app.</p>
						</div>
					</div>
					<h3 class="name name-method" id="setColor" translate="no">.<a href="#setColor">setColor</a><span class="signature">( color : <span class="param-type">number | <a href="Color.html">Color</a> | string</span> )</span> </h3>
					<div class="method">
						<div class="description">
							<p>Sets the color of the helper.</p>
						</div>
						<table class="params">
							<tbody>
								<tr>
									<td class="name">
										<strong>color</strong>
									</td>
									<td class="description last">
										<p>The color to set.</p>
									</td>
								</tr>
							</tbody>
						</table>
					</div>
					<h3 class="name name-method" id="setDirection" translate="no">.<a href="#setDirection">setDirection</a><span class="signature">( dir : <span class="param-type"><a href="Vector3.html">Vector3</a></span> )</span> </h3>
					<div class="method">
						<div class="description">
							<p>Sets the direction of the helper.</p>
						</div>
						<table class="params">
							<tbody>
								<tr>
									<td class="name">
										<strong>dir</strong>
									</td>
									<td class="description last">
										<p>The normalized direction vector.</p>
									</td>
								</tr>
							</tbody>
						</table>
					</div>
					<h3 class="name name-method" id="setLength" translate="no">.<a href="#setLength">setLength</a><span class="signature">( length : <span class="param-type">number</span>, headLength : <span class="param-type">number</span>, headWidth : <span class="param-type">number</span> )</span> </h3>
					<div class="method">
						<div class="description">
							<p>Sets the length of the helper.</p>
						</div>
						<table class="params">
							<tbody>
								<tr>
									<td class="name">
										<strong>length</strong>
									</td>
									<td class="description last">
										<p>Length of the arrow in world units.</p>
									</td>
								</tr>
								<tr>
									<td class="name">
										<strong>headLength</strong>
									</td>
									<td class="description last">
										<p>The length of the head of the arrow.</p>
										<p>Default is <code>length*0.2</code>.</p>
									</td>
								</tr>
								<tr>
									<td class="name">
										<strong>headWidth</strong>
									</td>
									<td class="description last">
										<p>The width of the head of the arrow.</p>
										<p>Default is <code>headLength*0.2</code>.</p>
									</td>
								</tr>
							</tbody>
						</table>
					</div>
				<h2 class="subsection-title">Source</h2>
				<p>
					<a href="https://github.com/mrdoob/three.js/blob/master/src/helpers/ArrowHelper.js" translate="no" target="_blank" rel="noopener">src/helpers/ArrowHelper.js</a>
				</p>
			</article>
		</section>
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