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


			
				
					
						
						
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154
							<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="utf-8">
	<title>ConvexObjectBreaker - 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>
	<h1 translate="no">ConvexObjectBreaker</h1>
		<section>
			<header>
				<div class="class-description"><p>This class can be used to subdivide a convex Geometry object into pieces.</p>
<p>Use the function prepareBreakableObject to prepare a Mesh object to be broken.
Then, call the various functions to subdivide the object (subdivideByImpact, cutByPlane).
Sub-objects that are product of subdivision don't need prepareBreakableObject to be called on them.</p>
<p>Requisites for the object:</p>
<ul>
<li>Mesh object must have a buffer geometry and a material.</li>
<li>Vertex normals must be planar (not smoothed).</li>
<li>The geometry must be convex (this is not checked in the library). You can create convex
geometries with <a href="ConvexGeometry.html">ConvexGeometry</a>. The <a href="BoxGeometry.html">BoxGeometry</a>, <a href="SphereGeometry.html">SphereGeometry</a> and other
convex primitives can also be used.</li>
</ul>
<p>Note: This lib adds member variables to object's userData member (see prepareBreakableObject function)
Use with caution and read the code when using with other libs.</p></div>
			</header>
			<article>
				<h2 class="subsection-title">Import</h2>
				<p><span translate="no">ConvexObjectBreaker</span> is an addon, and must be imported explicitly, see <a href="https://threejs.org/manual/#en/installation" target="_blank">Installation#Addons</a>.</p>
				<pre><code class="language-js">import { ConvexObjectBreaker } from 'three/addons/misc/ConvexObjectBreaker.js';</code></pre>
				<div class="container-overview">
					<h2>Constructor</h2>
					<h3 class="name name-method" id="ConvexObjectBreaker" translate="no">new <a href="#ConvexObjectBreaker">ConvexObjectBreaker</a><span class="signature">( minSizeForBreak : <span class="param-type">number</span>, smallDelta : <span class="param-type">number</span> )</span> </h3>
					<div class="method">
						<div class="description">
							<p>Constructs a new convex object breaker.</p>
						</div>
						<table class="params">
							<tbody>
								<tr>
									<td class="name"><code>minSizeForBreak</code></td>
									<td class="description last"><p>Min size a debris can have to break.<br/>Default is <code>1.4</code>.</p></td>
								</tr>
								<tr>
									<td class="name"><code>smallDelta</code></td>
									<td class="description last"><p>Max distance to consider that a point belongs to a plane.<br/>Default is <code>0.0001</code>.</p></td>
								</tr>
							</tbody>
						</table>
					</div>
				</div>
				<h2 class="subsection-title">Methods</h2>
					<h3 class="name name-method" id="cutByPlane" translate="no">.<a href="#cutByPlane">cutByPlane</a><span class="signature">( object : <span class="param-type">Object3D</span>, plane : <span class="param-type">Plane</span>, output : <span class="param-type">Object</span> )</span><span class="type-signature"> : number</span> </h3>
					<div class="method">
						<div class="description">
							<p>Subdivides the given 3D object into pieces by a plane.</p>
						</div>
						<table class="params">
							<tbody>
								<tr>
									<td class="name"><code>object</code></td>
									<td class="description last"><p>The 3D object to subdivide.</p></td>
								</tr>
								<tr>
									<td class="name"><code>plane</code></td>
									<td class="description last"><p>The plane to cut the 3D object.</p></td>
								</tr>
								<tr>
									<td class="name"><code>output</code></td>
									<td class="description last"><p>An object that stores the pieces.</p></td>
								</tr>
							</tbody>
						</table>
						<dl class="details">
							<dt class="tag-returns"><strong>Returns:</strong> The number of pieces.</dt>
						</dl>
					</div>
					<h3 class="name name-method" id="prepareBreakableObject" translate="no">.<a href="#prepareBreakableObject">prepareBreakableObject</a><span class="signature">( object : <span class="param-type">Object3D</span>, mass : <span class="param-type">number</span>, velocity : <span class="param-type">Vector3</span>, angularVelocity : <span class="param-type">Vector3</span>, breakable : <span class="param-type">boolean</span> )</span> </h3>
					<div class="method">
						<div class="description">
							<p>Must be called for all 3D objects that should be breakable.</p>
						</div>
						<table class="params">
							<tbody>
								<tr>
									<td class="name"><code>object</code></td>
									<td class="description last"><p>The 3D object. It must have a convex geometry.</p></td>
								</tr>
								<tr>
									<td class="name"><code>mass</code></td>
									<td class="description last"><p>The 3D object's mass in kg. Must be greater than <code>0</code>.</p></td>
								</tr>
								<tr>
									<td class="name"><code>velocity</code></td>
									<td class="description last"><p>The 3D object's velocity.</p></td>
								</tr>
								<tr>
									<td class="name"><code>angularVelocity</code></td>
									<td class="description last"><p>The 3D object's angular velocity.</p></td>
								</tr>
								<tr>
									<td class="name"><code>breakable</code></td>
									<td class="description last"><p>Whether the 3D object is breakable or not.</p></td>
								</tr>
							</tbody>
						</table>
					</div>
					<h3 class="name name-method" id="subdivideByImpact" translate="no">.<a href="#subdivideByImpact">subdivideByImpact</a><span class="signature">( object : <span class="param-type">Object3D</span>, pointOfImpact : <span class="param-type">Vector3</span>, normal : <span class="param-type">Vector3</span>, maxRadialIterations : <span class="param-type">number</span>, maxRandomIterations : <span class="param-type">number</span> )</span><span class="type-signature"> : Array.&lt;<a href="Object3D.html">Object3D</a>></span> </h3>
					<div class="method">
						<div class="description">
							<p>Subdivides the given 3D object into pieces by an impact (meaning another object hits
the given 3D object at a certain surface point).</p>
						</div>
						<table class="params">
							<tbody>
								<tr>
									<td class="name"><code>object</code></td>
									<td class="description last"><p>The 3D object to subdivide.</p></td>
								</tr>
								<tr>
									<td class="name"><code>pointOfImpact</code></td>
									<td class="description last"><p>The point of impact.</p></td>
								</tr>
								<tr>
									<td class="name"><code>normal</code></td>
									<td class="description last"><p>The impact normal.</p></td>
								</tr>
								<tr>
									<td class="name"><code>maxRadialIterations</code></td>
									<td class="description last"><p>Iterations for radial cuts.</p></td>
								</tr>
								<tr>
									<td class="name"><code>maxRandomIterations</code></td>
									<td class="description last"><p>Max random iterations for not-radial cuts.</p></td>
								</tr>
							</tbody>
						</table>
						<dl class="details">
							<dt class="tag-returns"><strong>Returns:</strong> The array of pieces.</dt>
						</dl>
					</div>
				<h2 class="subsection-title">Source</h2>
				<p>
					<a href="https://github.com/mrdoob/three.js/blob/master/examples/jsm/misc/ConvexObjectBreaker.js" target="_blank" rel="noopener" translate="no">examples/jsm/misc/ConvexObjectBreaker.js</a>
				</p>
			</article>
		</section>
<script src="../scripts/linenumber.js"></script>
<script src="../scripts/page.js"></script>
</body>
</html>