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


			
				
					
						
						
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		<meta charset="utf-8" />
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	<body>
		[page:BufferGeometry] &rarr;

		<h1>[name]</h1>

		<p class="desc">Creates extruded geometry from a path shape.</p>

		<iframe
			id="scene"
			src="scenes/geometry-browser.html#ExtrudeGeometry"
		></iframe>

		<script>

		// iOS iframe auto-resize workaround

		if ( /(iPad|iPhone|iPod)/g.test( navigator.userAgent ) ) {

			const scene = document.getElementById( 'scene' );

			scene.style.width = getComputedStyle( scene ).width;
			scene.style.height = getComputedStyle( scene ).height;
			scene.setAttribute( 'scrolling', 'no' );

		}

		</script>

		<h2>Code Example</h2>

		<code>
		const length = 12, width = 8;

		const shape = new THREE.Shape();
		shape.moveTo( 0,0 );
		shape.lineTo( 0, width );
		shape.lineTo( length, width );
		shape.lineTo( length, 0 );
		shape.lineTo( 0, 0 );

		const extrudeSettings = {
			steps: 2,
			depth: 16,
			bevelEnabled: true,
			bevelThickness: 1,
			bevelSize: 1,
			bevelOffset: 0,
			bevelSegments: 1
		};

		const geometry = new THREE.ExtrudeGeometry( shape, extrudeSettings );
		const material = new THREE.MeshBasicMaterial( { color: 0x00ff00 } );
		const mesh = new THREE.Mesh( geometry, material ) ;
		scene.add( mesh );
		</code>

		<h2>Constructor</h2>

		<h3>[name]([param:Array shapes], [param:Object options])</h3>
		<p>
			shapes — Shape or an array of shapes. <br />
			options — Object that can contain the following parameters.
		</p>

		<ul>
			<li>
				curveSegments — int. Number of points on the curves. Default is `12`.
			</li>
			<li>
				steps — int. Number of points used for subdividing segments along the
				depth of the extruded spline. Default is `1`.
			</li>
			<li>depth — float. Depth to extrude the shape. Default is `1`.</li>
			<li>
				bevelEnabled — bool. Apply beveling to the shape. Default is true.
			</li>
			<li>
				bevelThickness — float. How deep into the original shape the bevel goes.
				Default is `0.2`.
			</li>
			<li>
				bevelSize — float. Distance from the shape outline that the bevel
				extends. Default is bevelThickness - 0.1.
			</li>
			<li>
				bevelOffset — float. Distance from the shape outline that the bevel
				starts. Default is `0`.
			</li>
			<li>bevelSegments — int. Number of bevel layers. Default is `3`.</li>
			<li>
				extrudePath — THREE.Curve. A 3D spline path along which the shape should
				be extruded. Bevels not supported for path extrusion.
			</li>
			<li>UVGenerator — Object. object that provides UV generator functions</li>
		</ul>

		<p>This object extrudes a 2D shape to a 3D geometry.</p>

		<p>
			When creating a Mesh with this geometry, if you'd like to have a separate
			material used for its face and its extruded sides, you can use an array of
			materials. The first material will be applied to the face; the second
			material will be applied to the sides.
		</p>

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

		<h3>[property:Object parameters]</h3>
		<p>
			An object with a property for each of the constructor parameters. Any
			modification after instantiation does not change the geometry.
		</p>

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

		<h2>Source</h2>

		<p>
			[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
		</p>
	</body>
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