裁剪动画 ·Clip Animation· ▶ 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裁剪动画效果基于 WebGL 实现「裁剪动画」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 { GUI } 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, 2, 0)const renderer new THREE.WebGLRenderer({ antialias: true, alpha: true, logarithmicDepthBuffer: true })renderer.setSize(box.clientWidth, box.clientHeight)box.appendChild(renderer.domElement)const controls new OrbitControls(camera, renderer.domElement)controls.enableDamping trueconst pointLight new THREE.PointLight(0xffffff, 1.5, 0, 0)pointLight.position.set(5, 5, 5)scene.add(pointLight)scene.add(new THREE.AmbientLight(0xffffff, 1))animate()function animate() {requestAnimationFrame(animate)controls.update()renderer.render(scene, camera)}window.onresize () {renderer.setSize(box.clientWidth, box.clientHeight)camera.aspect box.clientWidth / box.clientHeightcamera.updateProjectionMatrix()}let groupconst loader new GLTFLoader()loader.setDRACOLoader(new DRACOLoader().setDecoderPath(FILE_HOST js/three/draco/))loader.load(HOST /files/model/car.glb,function (gltf) {group gltf.scenescene.add(group)})// 裁剪面 const plane new THREE.Plane(new THREE.Vector3(0, 0, 1), 0)renderer.clippingPlanes [plane]renderer.localClippingEnabled trueconst gui new GUI()gui.add({ play: () { gsap.to(plane, { constant: 2, duration: 2 })} }, play)gui.add({ restore: () { gsap.to(plane, { constant: -2, duration: 2 })} }, restore)完整源码GitHub小结本文提供裁剪动画完整 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