Three.js加载360全景图片/视频
效果
原理
- 将全景图片/视频作为texture引入到three.js场景中
- 将贴图与球形网格模型融合，将球模型当做成环境容器使用
- 处理视频时需要以dom为载体，加载与控制视频动作
- 每次渲染时更新当前texture，以达到视频播放效果
- 全景图片加载有球体与正方体两种模式，区别在于是加载单张图片还是多张图片
核心方法
// 添加VR全景图const addVrPicture = async () => {// 创建贴图const loader = new THREE.TextureLoader();const texture = await loader.load('./img/vr.jpg');texture.wrapS = THREE.RepeatWrapping;texture.repeat.x = -1;// 创建球形载体const sphereGeometry = new THREE.SphereGeometry(200, 60, 40);const sphereMaterial = new THREE.MeshBasicMaterial({ map: texture, side: THREE.BackSide });const sphere = new THREE.Mesh(sphereGeometry, sphereMaterial);scene.add(sphere);};// 添加VR全景视频const addVrVideo = async () => {// 通过Dom引入并控制视频源const video = document.createElement('video');video.src = './video/vr.mp4';video.loop = true;video.muted = true;video.autoplay = true;// 创建视频贴图const texture = new THREE.VideoTexture(video);texture.minFilter = THREE.LinearFilter;// 创建球形载体const sphereGeometry = new THREE.SphereGeometry(200, 60, 40);const sphereMaterial = new THREE.MeshBasicMaterial({ map: texture, side: THREE.BackSide });const sphere = new THREE.Mesh(sphereGeometry, sphereMaterial);scene.add(sphere);// 添加动画序列animationList.push(() => {// 更新视频纹理// 播放视频video.play();if (video.readyState === video.HAVE_ENOUGH_DATA) {texture.needsUpdate = true;}});// 调整相机视角const point = new THREE.Vector3(200, 0, 0);camera.lookAt(point);};
完整代码
<html lang="en"><head><meta charset="UTF-8" /><meta name="viewport" content="width=device-width, initial-scale=1.0" /><title>Document</title><style>* {margin: 0;padding: 0;}</style></head><body><script type="module">import * as util from './js/util.js';import * as THREE from './node_modules/three/build/three.module.js';import { creatWallByPath } from './js/effect.js';const scene = util.initScene();const stats = util.initStats();const camera = util.initCamera(-1, 0, 0);const renderer = util.initRender();const controls = util.initOrbitControls(camera, renderer);util.windowReSize(renderer, camera);util.addAxisHelper(scene, 100);util.addAmbientLight(scene);util.addDirectionalLight(scene);// 动画序列，每个渲染周期执行const animationList = [];// 添加VR全景图const addVrPicture = async () => {// 创建贴图const loader = new THREE.TextureLoader();const texture = await loader.load('./img/vr.jpg');texture.wrapS = THREE.RepeatWrapping;texture.repeat.x = -1;// 创建球形载体const sphereGeometry = new THREE.SphereGeometry(200, 60, 40);const sphereMaterial = new THREE.MeshBasicMaterial({ map: texture, side: THREE.BackSide });const sphere = new THREE.Mesh(sphereGeometry, sphereMaterial);scene.add(sphere);};// 添加VR全景视频const addVrVideo = async () => {// 通过Dom引入并控制视频源const video = document.createElement('video');video.src = './video/vr.mp4';video.loop = true;video.muted = true;video.autoplay = true;// 创建视频贴图const texture = new THREE.VideoTexture(video);texture.minFilter = THREE.LinearFilter;// 创建球形载体const sphereGeometry = new THREE.SphereGeometry(200, 60, 40);const sphereMaterial = new THREE.MeshBasicMaterial({ map: texture, side: THREE.BackSide });const sphere = new THREE.Mesh(sphereGeometry, sphereMaterial);scene.add(sphere);// 添加动画序列animationList.push(() => {// 更新视频纹理// 播放视频video.play();if (video.readyState === video.HAVE_ENOUGH_DATA) {texture.needsUpdate = true;}});// 调整相机视角const point = new THREE.Vector3(200, 0, 0);camera.lookAt(point);};const main = async () => {// 添加VR图像await addVrPicture();// 添加VR视频// await addVrVideo();};// 渲染函数const render = () => {renderer.render(scene, camera);stats.update();animationList.forEach((callback) => callback());requestAnimationFrame(render);};window.onload = () => {main();render();};</script></body>
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