Three.js 优雅永不过时教程

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优雅永不过时 ·Elegant Always· ▶ 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BufferGeometry 自定义顶点/索引数据效果说明本案例演示优雅永不过时效果基于 WebGL 实现「优雅永不过时」可视化效果附完整可运行源码核心用到 OrbitControls、BufferGeometry。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创建 OrbitControls及 Raycaster 等交互控件若源码包含在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 three;import { OrbitControls } from three/addons/controls/OrbitControls.js; import { OBJLoader } from three/examples/jsm/loaders/OBJLoader.js import { MeshSurfaceSampler } from three/examples/jsm/math/MeshSurfaceSampler.js;const scene new THREE.Scene(); const camera new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000); camera.position.set(0, 100, 300)const renderer new THREE.WebGLRenderer({ antialias: true, alpha: true }) renderer.setSize(window.innerWidth, window.innerHeight) document.body.appendChild(renderer.domElement)const controls new OrbitControls(camera, renderer.domElement) controls.autoRotate truelet sampler nulllet path nullnew OBJLoader().load(FILE_HOST files/model/z2586300277.obj,(obj) {sampler new MeshSurfaceSampler(obj.children[0]).build();path new Path();scene.add(path.line);renderer.setAnimationLoop(render);})const tempPosition new THREE.Vector3();class Path { constructor() {this.vertices [];this.geometry new THREE.BufferGeometry();this.material new THREE.LineBasicMaterial({ color: 0xa58fb5, transparent: true, opacity: 0.5 });this.line new THREE.Line(this.geometry, this.material);sampler.sample(tempPosition);this.previousPoint tempPosition.clone()} update() {let pointFound false;while (!pointFound) {sampler.sample(tempPosition);if (tempPosition.distanceTo(this.previousPoint) 20) {this.vertices.push(tempPosition.x, tempPosition.y, tempPosition.z);this.previousPoint tempPosition.clone();pointFound true;}}this.geometry.setAttribute(position, new THREE.Float32BufferAttribute(this.vertices, 3));}}function render() {if (path.vertices.length 50000) {Array.from({ length: 10 }).forEach(() path.update())}controls.update();renderer.render(scene, camera);}window.onresize () {camera.aspect window.innerWidth / window.innerHeight;camera.updateProjectionMatrix();renderer.setSize(window.innerWidth, window.innerHeight);}完整源码GitHub小结本文提供优雅永不过时完整 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

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