vue3使用Three.js加载外部模型文件
1.安装Three.js
yarn add three
npm install three
2.新建一个renderModel.js 用于处理Three.js相关逻辑
import * as THREE from 'three' //导入整个 three.js核心库
import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader'
import { DRACOLoader } from 'three/examples/jsm/loaders/DRACOLoader'
import { OBJLoader } from 'three/examples/jsm/loaders/OBJLoader'
import { FBXLoader } from 'three/examples/jsm/loaders/FBXLoader'
// 定义一个 class类
class renderModel {
constructor(selector) {
this.container = document.querySelector(selector)
// 相机
this.camera
// 场景
this.scene
//渲染器
this.renderer
// 控制器
this.controls
// 模型
this.model
//文件加载器类型
this.fileLoaderMap = {
'glb': new GLTFLoader(),
'fbx': new FBXLoader(),
'gltf': new GLTFLoader(),
'obj': new OBJLoader(),
}
}
// 初始化加载模型方法
init(){
return new Promise(async (reslove, reject) => {
//初始化场景
this.initScene()
//初始化相机
this.initCamera()
//初始化渲染器
this.initRender()
// 添加物体模型 TODO：初始化时需要默认一个 filePath:'threeFile/glb/glb-3.glb' 放在 vue项目中的public/threeFile文件下
const load = await this.setModel({ filePath: 'threeFile/glb/glb-3.glb', fileType: 'glb',scale:0.5})
//监听场景大小改变，跳转渲染尺寸
window.addEventListener("resize", this.onWindowResize.bind(this))
//场景渲染
this.sceneAnimation()
reslove(load)
})
}
//创建场景
initScene() {
this.scene = new THREE.Scene()
const texture = new THREE.TextureLoader().load(require('@/assets/image/view-4.png'))
texture.mapping = THREE.EquirectangularReflectionMapping
// texture.colorSpace = THREE.SRGBColorSpace
this.scene.background = texture
this.scene.environment = texture
}
// 创建相机
initCamera() {
const { clientHeight, clientWidth } = this.container
this.camera = new THREE.PerspectiveCamera(45, clientWidth / clientHeight, 0.25, 100)
}
// 创建渲染器
initRender() {
this.renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true }) //设置抗锯齿
//设置屏幕像素比
this.renderer.setPixelRatio(window.devicePixelRatio)
//渲染的尺寸大小
const { clientHeight, clientWidth } = this.container
this.renderer.setSize(clientWidth, clientHeight)
//色调映射
this.renderer.toneMapping = THREE.ACESFilmicToneMapping
//曝光
this.renderer.toneMappingExposure = 3
this.renderer.shadowMap.enabled = true
this.renderer.shadowMap.type = THREE.PCFSoftShadowMap
this.container.appendChild(this.renderer.domElement)
}
// 使用动画器不断更新场景
sceneAnimation() {
this.renderer.setAnimationLoop(this.render.bind(this))
}
//渲染场景
render(){
this.renderer.render(this.scene, this.camera)
}
//加载模型
setModel({ filePath, fileType, scale, position }) {
return new Promise((resolve, reject) => {
const loader = this.fileLoaderMap[fileType]
loader.load(filePath, (result) => {
//加载不同类型的文件
switch (fileType) {
case 'glb':
this.model = result.scene
break;
case 'fbx':
this.model = result
break;
case 'gltf':
this.model = result.scene
break;
case 'obj':
this.model = result
break;
default:
break;
}
// 设置模型大小
if (scale) {
this.model.scale.set(scale, scale, scale);
}
// 设置模型位置
if (position) {
const { x, y, z } = position
this.model.position.set(x, y, z)
}
// 设置相机位置
this.camera.position.set(0, 2, 6)
// 设置相机坐标系
this.camera.lookAt(0, 0, 0)
// 将模型添加到场景中去
this.scene.add(this.model)
resolve(true)
}, () => {
}, (err) => {
console.log(err)
reject()
})
})
}
}
3.modelPage.vue 中使用页面文章来源：https://www.toymoban.com/news/detail-550955.html
<template>
<div id="model" ref="model"></div>
</template>
<script setup>
import { onMounted} from "vue";
import renderModel from "./renderModel";
onMounted(async () => {
const modelApi = new renderModel("#model");
const load = await modelApi.init();
// load =true 表示加载完成
});
</script>
完整的代码可参考:https://gitee.com/ZHANG_6666/Three.js3D
6.效果图:
文章来源地址https://www.toymoban.com/news/detail-550955.html
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