模型拆解动画 ·Model Unpack· ▶ 在线运行案例案例合集三维可视化功能案例threehub.cn开源仓库github地址https://github.com/z2586300277/three-cesium-examples400个案例代码:网盘链接你将学到什么OrbitControls 相机轨道交互glTF/Draco 模型加载与优化GSAP 时间轴与补间动画requestAnimationFrame渲染循环与resize自适应效果说明本案例演示模型拆解动画效果基于 WebGL 实现「模型拆解动画」可视化效果附完整可运行源码核心用到 OrbitControls、glTF/Draco、GSAP。建议先打开文首在线案例查看动态画面再对照下方源码逐步理解。核心概念Scene / Camera / WebGLRenderer构成最小渲染闭环大场景可开logarithmicDepthBuffer缓解 Z-fighting。OrbitControls提供轨道旋转/缩放开启enableDamping后需在 animate 中controls.update()。阅读下方完整源码时建议从init/load/animate三条主线入手再深入 shader 与工具函数。实现步骤搭建 Scene、PerspectiveCamera、WebGLRenderer挂载 canvas 并处理resize异步加载模型 / 3D Tiles / GeoJSON 等资源并加入 scene 或 entities创建 OrbitControls及 Raycaster 等交互控件若源码包含在定时器或 GSAP 时间轴中更新 uniform / 变换驱动特效播放在requestAnimationFrame循环中更新状态并 renderCesium 为viewer.render或自动渲染代码要点import * as THREE from threeimport { OrbitControls } from three/examples/jsm/controls/OrbitControls.js import { GLTFLoader } from three/examples/jsm/loaders/GLTFLoader.js import { DRACOLoader } from three/examples/jsm/loaders/DRACOLoader.js import * as dat from dat.gui import gsap from gsapconst box document.getElementById(box)const scene new THREE.Scene()const camera new THREE.PerspectiveCamera(75, box.clientWidth / box.clientHeight, 0.1, 1000)camera.position.set(5, 5, 5)const renderer new THREE.WebGLRenderer({ antialias: true, alpha: true, logarithmicDepthBuffer: true })renderer.setSize(box.clientWidth, box.clientHeight)box.appendChild(renderer.domElement)new OrbitControls(camera, renderer.domElement)window.onresize () {renderer.setSize(box.clientWidth, box.clientHeight)camera.aspect box.clientWidth / box.clientHeightcamera.updateProjectionMatrix()}animate()function animate() {requestAnimationFrame(animate)renderer.render(scene, camera)}scene.add(new THREE.AmbientLight(0xffffff, 1))const pointLight new THREE.PointLight(0xffffff, 1.5, 0, 2)pointLight.position.set(5, 5, 5)scene.add(pointLight)const directionalLight new THREE.DirectionalLight(0xffffff, 2)directionalLight.position.set(-5, 5, -5)scene.add(directionalLight)scene.add(new THREE.AxesHelper(1000))let group// 加载模型 gltf/ glb draco解码器 const loader new GLTFLoader()loader.setDRACOLoader(new DRACOLoader().setDecoderPath(FILE_HOST js/three/draco/))loader.load(HOST /files/model/car.glb,gltf {group gltf.sceneconst box new THREE.Box3().setFromObject(group);const center new THREE.Vector3();box.getCenter(center);group.center centergroup.traverse((child) {if (child.isMesh) {child.localToWorld(child.position) //转为世界坐标child.startPoisition child.position.clone()}})scene.add(group)})// 拆解 const mergeHandle (model) {const distance () Math.random() 0.5 ? 1.5 : -1.5model.traverse((child) {if (child.startPoisition) {const v1 distance()const v2 distance()const v3 distance()gsap.to(child.position, { x: child.startPoisition.x v1, y: child.startPoisition.y v2, z: child.startPoisition.z v3, duration: 1, ease: power2.inOut })}}); };const gui new dat.GUI()gui.add({拆解动画: () {mergeHandle(group) }}, 拆解动画)gui.add({还原动画: () {group.traverse((child) {if (child.startPoisition) {gsap.to(child.position, { x: child.startPoisition.x, y: child.startPoisition.y, z: child.startPoisition.z, duration: 1, ease: power2.inOut })}});}}, 还原动画)完整源码GitHub小结本文提供模型拆解动画完整 Three.js 源码与在线 Demo建议先运行案例再改 uniform/参数做二次实验更多 Three.js 实战案例见 three-cesium-examples 合集 与 GitHub 开源仓库