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<!DOCTYPE html>
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<html lang="zh">
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<head>
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<meta charset="utf-8" />
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<base href="../../../" />
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<script src="page.js"></script>
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<link type="text/css" rel="stylesheet" href="page.css" />
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</head>
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<body>
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[page:Loader] →
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<h1>[name]</h1>
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<p class="desc">用于加载`.svg`资源的加载器<br >
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[link:https://en.wikipedia.org/wiki/Scalable_Vector_Graphics 可伸缩向量图形]是XML形式的矢量图形格式，用来描述二维矢量图形并支持交互和动画。
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</p>
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<h2>导入</h2>
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<p>
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[name]是附加功能，必须显示引用。
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请参考[link:#manual/introduction/Installation Installation / Addons].
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</p>
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<code>
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import { SVGLoader } from 'three/addons/loaders/SVGLoader.js';
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</code>
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<h2>代码示例</h2>
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<code>
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// instantiate a loader
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const loader = new SVGLoader();
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// load a SVG resource
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loader.load(
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// resource URL
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'data/svgSample.svg',
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// called when the resource is loaded
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function ( data ) {
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const paths = data.paths;
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const group = new THREE.Group();
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for ( let i = 0; i < paths.length; i ++ ) {
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const path = paths[ i ];
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const material = new THREE.MeshBasicMaterial( {
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color: path.color,
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side: THREE.DoubleSide,
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depthWrite: false
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} );
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const shapes = SVGLoader.createShapes( path );
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for ( let j = 0; j < shapes.length; j ++ ) {
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const shape = shapes[ j ];
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const geometry = new THREE.ShapeGeometry( shape );
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const mesh = new THREE.Mesh( geometry, material );
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group.add( mesh );
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}
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}
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scene.add( group );
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},
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// called when loading is in progress
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function ( xhr ) {
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console.log( ( xhr.loaded / xhr.total * 100 ) + '% loaded' );
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},
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// called when loading has errors
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function ( error ) {
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console.log( 'An error happened' );
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}
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);
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</code>
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<h2>示例</h2>
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<p>
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[example:webgl_loader_svg]
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</p>
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<h2>构造函数</h2>
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<h3>[name]( [param:LoadingManager manager] )</h3>
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<p>
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[page:LoadingManager manager] — 加载器使用的[page:LoadingManager 加载器管理]。默认值为[page:LoadingManager THREE.DefaultLoadingManager]。
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</p>
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<p>
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创建一个新的[name]。
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</p>
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<h2>属性</h2>
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<p>查看公共属性请参考基类[page:Loader]。</p>
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<h2>方法</h2>
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<p>查看公共方法请参考基类[page:Loader]。</p>
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<h3>[method:undefined load]( [param:String url], [param:Function onLoad], [param:Function onProgress], [param:Function onError] )</h3>
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<p>
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[page:String url] — 一个`.svg`文件的路径或者网络地址。<br />
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[page:Function onLoad] — (可选的)加载成功之后调用的函数。该函数以[page:ShapePath]为参数。<br />
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[page:Function onProgress] — (可选的)正在加载时调用的函数。参数为XMLHttpRequest实例，包含[page:Integer total]和[page:Integer loaded]。
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如果服务没有设置Content-Length头，.[page:Integer total]的值为0。<br />
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[page:Function onError] — (可选的)加载出现错误时调用的函数。该函将错误信息作为参数。<br />
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</p>
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<p>
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根据请求的URL开始加载并根据返回内容调用onLoad。
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</p>
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<h2>静态方法</h2>
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<h3>[method:Array createShapes]( [param:ShapePath shape] )</h3>
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<p>
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[page:ShapePath shape] — 一个[page:ShapePath]的矢量图形数组,指定[page:SVGLoader]的onLoad函数的参数。<br />
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</p>
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<p>
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返回一个或多个基于[param:ShapePath shape]的[page:Shape]对象，并作为该函数的一个参数返回。
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</p>
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<h2>源代码</h2>
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<p>
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[link:https://github.com/mrdoob/three.js/blob/master/examples/jsm/loaders/SVGLoader.js examples/jsm/loaders/SVGLoader.js]
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</p>
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</body>
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</html>
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