samien
/
three.js
oglindă de https://github.com/mrdoob/three.js.git


			
				
					
						
						
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115
							<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="utf-8">
	<title>VertexTangentsHelper - Three.js Docs</title>
	<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
	<script src="../scripts/highlight.min.js"></script>
	<link type="text/css" rel="stylesheet" href="../styles/highlight-three.css">
	<link type="text/css" rel="stylesheet" href="../styles/page.css">
</head>
<body>
		<p class="inheritance" translate="no"><a href="EventDispatcher.html">EventDispatcher</a> → <a href="Object3D.html">Object3D</a> → <a href="Line.html">Line</a> → <a href="LineSegments.html">LineSegments</a> → </p>
	<h1 translate="no">VertexTangentsHelper</h1>
		<section>
			<header>
				<div class="class-description"><p>Visualizes an object's vertex tangents.</p>
<p>Requires that tangents have been specified in the geometry as a buffer attribute or
have been calculated using <a href="BufferGeometry.html#computeTangents">BufferGeometry#computeTangents</a>.</p></div>
				<h2>Code Example</h2>
				<div translate="no"><pre><code class="language-js">const helper = new VertexTangentsHelper( mesh, 1, 0xff0000 );
scene.add( helper );
</code></pre></div>
			</header>
			<article>
				<h2 class="subsection-title">Import</h2>
				<p><span translate="no">VertexTangentsHelper</span> is an addon, and must be imported explicitly, see <a href="https://threejs.org/manual/#en/installation" target="_blank" rel="noopener">Installation#Addons</a>.</p>
				<pre><code class="language-js">import { VertexTangentsHelper } from 'three/addons/helpers/VertexTangentsHelper.js';</code></pre>
				<div class="container-overview">
					<h2>Constructor</h2>
					<h3 class="name name-method" id="VertexTangentsHelper" translate="no">new <a href="#VertexTangentsHelper">VertexTangentsHelper</a><span class="signature">( object : <span class="param-type"><a href="Object3D.html">Object3D</a></span>, size : <span class="param-type">number</span>, color : <span class="param-type">number | <a href="Color.html">Color</a> | string</span> )</span> </h3>
					<div class="method">
						<div class="description">
							<p>Constructs a new vertex tangents helper.</p>
						</div>
						<table class="params">
							<tbody>
								<tr>
									<td class="name">
										<strong>object</strong>
									</td>
									<td class="description last">
										<p>The object for which to visualize vertex tangents.</p>
									</td>
								</tr>
								<tr>
									<td class="name">
										<strong>size</strong>
									</td>
									<td class="description last">
										<p>The helper's size.</p>
										<p>Default is <code>1</code>.</p>
									</td>
								</tr>
								<tr>
									<td class="name">
										<strong>color</strong>
									</td>
									<td class="description last">
										<p>The helper's color.</p>
										<p>Default is <code>0xff0000</code>.</p>
									</td>
								</tr>
							</tbody>
						</table>
					</div>
				</div>
				<h2 class="subsection-title">Properties</h2>
				<div class="member">
					<h3 class="name" id="matrixAutoUpdate" translate="no">.<a href="#matrixAutoUpdate">matrixAutoUpdate</a><span class="type-signature"> : boolean</span> </h3>
					<div class="description">
						<p>Overwritten and set to <code>false</code> since the object's world transformation
is encoded in the helper's geometry data.</p>
						<p>Default is <code>false</code>.</p>
					</div>
						<dl class="details">
							<dt class="tag-overrides"><strong>Overrides:</strong> <a href="LineSegments.html#matrixAutoUpdate">LineSegments#matrixAutoUpdate</a></dt>
						</dl>
				</div>
				<div class="member">
					<h3 class="name" id="object" translate="no">.<a href="#object">object</a><span class="type-signature"> : <a href="Object3D.html">Object3D</a></span> </h3>
					<div class="description">
						<p>The object for which to visualize vertex tangents.</p>
					</div>
				</div>
				<div class="member">
					<h3 class="name" id="size" translate="no">.<a href="#size">size</a><span class="type-signature"> : number</span> </h3>
					<div class="description">
						<p>The helper's size.</p>
						<p>Default is <code>1</code>.</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="update" translate="no">.<a href="#update">update</a><span class="signature">()</span> </h3>
					<div class="method">
						<div class="description">
							<p>Updates the vertex normals preview based on the object's world transform.</p>
						</div>
					</div>
				<h2 class="subsection-title">Source</h2>
				<p>
					<a href="https://github.com/mrdoob/three.js/blob/master/examples/jsm/helpers/VertexTangentsHelper.js" translate="no" target="_blank" rel="noopener">examples/jsm/helpers/VertexTangentsHelper.js</a>
				</p>
			</article>
		</section>
<script src="../scripts/linenumber.js"></script>
<script src="../scripts/page.js"></script>
</body>
</html>