javascript
/
three.js
镜像来自 https://github.com/tazdij/three.js.git


			
							1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283
							<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8" />
		<base href="../../../" />
		<script src="page.js"></script>
		<link type="text/css" rel="stylesheet" href="page.css" />
	</head>
	<body>
		[page:Object3D] &rarr; [page:Line] &rarr; [page:LineSegments] &rarr;

		<h1>[name]</h1>

		<p class="desc">
			Visualizes an object's vertex normals.
			Requires that normals have been specified in a [page:BufferAttribute custom attribute] or
			have been calculated using [page:BufferGeometry.computeVertexNormals computeVertexNormals].<br /><br />
		</p>

		<h2>Code Example</h2>

		<code>
		const geometry = new THREE.BoxGeometry( 10, 10, 10, 2, 2, 2 );
		const material = new THREE.MeshStandardMaterial();
		const mesh = new THREE.Mesh( geometry, material );

		const helper = new VertexNormalsHelper( mesh, 1, 0xff0000 );

		scene.add( mesh );
		scene.add( helper );
		</code>

		<h2>Examples</h2>
		<p>
			[example:webgl_helpers WebGL / helpers]
		</p>

		<h2>Constructor</h2>


		<h3>[name]( [param:Object3D object], [param:Number size], [param:Hex color] )</h3>
		<p>
			[page:Object3D object] -- object for which to render vertex normals.<br />
			[page:Number size] -- (optional) length of the arrows. Default is *1*.<br />
			[page:Hex color] -- (optional) hex color of the arrows. Default is *0xff0000*.
		</p>


		<h2>Properties</h2>
		<p>See the base [page:LineSegments] class for common properties.</p>

		<h3>[property:Object matrixAutoUpdate]</h3>
		<p>
			See [page:Object3D.matrixAutoUpdate]. Set to `false` here as the helper is using the
			object's [page:Object3D.matrixWorld matrixWorld].
		</p>

		<h3>[property:Object3D object]</h3>
		<p>The object for which the vertex normals are being visualized.</p>

		<h3>[property:Number size]</h3>
		<p>Length of the arrows. Default is *1*.</p>


		<h2>Methods</h2>
		<p>See the base [page:LineSegments] class for common methods.</p>


		<h3>[method:undefined update]()</h3>
		<p>Updates the vertex tangents preview based on the object's world transform.</p>

		<h3>[method:undefined dispose]()</h3>
		<p>
		Frees the GPU-related resources allocated by this instance. Call this method whenever this instance is no longer used in your app.
		</p>

		<h2>Source</h2>

		<p>
			[link:https://github.com/mrdoob/three.js/blob/master/examples/jsm/helpers/VertexNormalsHelper.js examples/jsm/helpers/VertexNormalsHelper.js]
		</p>
	</body>
</html>