html|Three.js fbx文件导入 WebGL|three.js

源码下载
https://download.csdn.net/download/qq_34206863/10859181
https://download.csdn.net/download/qq_34206863/12065026
其实可以先看看官方案例
你想要的东西官方里面都有，就看你找不找得到了。。。。
话不多说
我们先看看这个例子吧

正文更新时间：2019年11月27日

three.js webgl - FBX loader - 锐客网 three.js - FBXLoader Character and animation from Mixamo

首先我们找到这个例子，然后对其解析，化为自己的知识

import * as THREE from '../build/three.module.js'; import Stats from './jsm/libs/stats.module.js'; import { OrbitControls } from './jsm/controls/OrbitControls.js'; import { FBXLoader } from './jsm/loaders/FBXLoader.js';

我们看到引入的js库有以上几类

three.js的模块库
stats的模块库
鼠标控制相机（Camera）库
FBXLoader库

【html|Three.js fbx文件导入】FBXLoader.js库，是fbx文件的加载库
所以，我们这个时候应该看看源码。

/** * @author Kyle-Larson https://github.com/Kyle-Larson * @author Takahiro https://github.com/takahirox * @author Lewy Blue https://github.com/looeee * * Loader loads FBX file and generates Group representing FBX scene. * Requires FBX file to be >= 7.0 and in ASCII or >= 6400 in Binary format * Versions lower than this may load but will probably have errors * * Needs Support: *Morph normals / blend shape normals * * FBX format references: *https://wiki.blender.org/index.php/User:Mont29/Foundation/FBX_File_Structure *http://help.autodesk.com/view/FBX/2017/ENU/?guid=__cpp_ref_index_html (C++ SDK reference) * *Binary format specification: *https://code.blender.org/2013/08/fbx-binary-file-format-specification/ */

恩，一来就看到fbx的格式要求
看正文

( function () { //构造函数 function FBXLoader( manager ) { Loader.call( this, manager ); } //对fbx对象的配置处理 FBXLoader.prototype = Object.assign( Object.create( Loader.prototype ), {...}); //读取 load: function ( url, onLoad, onProgress, onError ) { var self = this; var path = ( self.path === '' ) ? LoaderUtils.extractUrlBase( url ) : self.path; var loader = new FileLoader( this.manager ); loader.setPath( self.path ); loader.setResponseType( 'arraybuffer' ); loader.load( url, function ( buffer ) { try { onLoad( self.parse( buffer, path ) ); } catch ( error ) { setTimeout( function () { if ( onError ) onError( error ); self.manager.itemError( url ); }, 0 ); } }, onProgress, onError ); }, //解析 parse: function ( FBXBuffer, path ) { if ( isFbxFormatBinary( FBXBuffer ) ) { fbxTree = new BinaryParser().parse( FBXBuffer ); } else { var FBXText = convertArrayBufferToString( FBXBuffer ); if ( ! isFbxFormatASCII( FBXText ) ) { throw new Error( 'THREE.FBXLoader: Unknown format.' ); } if ( getFbxVersion( FBXText ) < 7000 ) { throw new Error( 'THREE.FBXLoader: FBX version not supported, FileVersion: ' + getFbxVersion( FBXText ) ); } fbxTree = new TextParser().parse( FBXText ); } // console.log( fbxTree ); var textureLoader = new TextureLoader( this.manager ).setPath( this.resourcePath || path ).setCrossOrigin( this.crossOrigin ); return new FBXTreeParser( textureLoader, this.manager ).parse( fbxTree ); }

文章图片

这就是它的介绍，至于源码有兴趣的看看吧。
然后我们开始了解如何构造的

//容器 container = document.createElement( 'div' ); document.body.appendChild( container ); //相机（充当你的眼睛） camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 2000 ); camera.position.set( 100, 200, 300 ); //位置 //场景 scene = new THREE.Scene(); scene.background = new THREE.Color( 0xa0a0a0 ); //背景色 scene.fog = new THREE.Fog( 0xa0a0a0, 200, 1000 ); //雾化 //灯光 light = new THREE.HemisphereLight( 0xffffff, 0x444444 ); //没有光线，将啥也看不到 light.position.set( 0, 200, 0 ); scene.add( light ); light = new THREE.DirectionalLight( 0xffffff ); light.position.set( 0, 200, 100 ); light.castShadow = true; light.shadow.camera.top = 180; light.shadow.camera.bottom = - 100; light.shadow.camera.left = - 120; light.shadow.camera.right = 120; scene.add( light ); // scene.add( new CameraHelper( light.shadow.camera ) ); // ground 广场，整个大地 var mesh = new THREE.Mesh( new THREE.PlaneBufferGeometry( 2000, 2000 ), new THREE.MeshPhongMaterial( { color: 0x999999, depthWrite: false } ) ); //材质 mesh.rotation.x = - Math.PI / 2; mesh.receiveShadow = true; scene.add( mesh ); //格子 var grid = new THREE.GridHelper( 2000, 20, 0x000000, 0x000000 ); grid.material.opacity = 0.2; grid.material.transparent = true; scene.add( grid ); // model 模型 var loader = new FBXLoader(); loader.load( 'models/fbx/ball.fbx', function ( object ) { //获取动画 mixer = new THREE.AnimationMixer( object ); var action = mixer.clipAction( object.animations[ 0 ] ); action.play(); //播放 object.traverse( function ( child ) { if ( child.isMesh ) {//材质 child.castShadow = true; child.receiveShadow = true; } } ); scene.add( object ); } ); //渲染 renderer = new THREE.WebGLRenderer( { antialias: true } ); renderer.setPixelRatio( window.devicePixelRatio ); renderer.setSize( window.innerWidth, window.innerHeight ); renderer.shadowMap.enabled = true; container.appendChild( renderer.domElement ); controls = new OrbitControls( camera, renderer.domElement ); controls.target.set( 0, 100, 0 ); controls.update(); window.addEventListener( 'resize', onWindowResize, false ); //尺寸变换 // stats stats = new Stats(); //左上角那一坨 container.appendChild( stats.dom );

好了，看不看得懂，不要紧，要懂得基本操作就好了，是在不行，自己去例子里面现学现卖。当然懂了最好
最后我们实际运行一下。