Three.js 建筑线条教程

建筑线条 ·Building Line· ▶ 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EdgesGeometry 模型边线提取requestAnimationFrame渲染循环与resize自适应效果说明本案例演示建筑线条效果基于 WebGL 实现「建筑线条」可视化效果附完整可运行源码核心用到 OrbitControls、glTF/Draco、EdgesGeometry。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 { LineSegments2 } from three/examples/jsm/lines/LineSegments2.js; import { LineMaterial } from three/examples/jsm/lines/LineMaterial.js; import { LineSegmentsGeometry } from three/examples/jsm/lines/LineSegmentsGeometry.js;const box document.getElementById(box)const scene new THREE.Scene()const camera new THREE.PerspectiveCamera(75, box.clientWidth / box.clientHeight, 0.1, 100000)camera.position.set(1, 1, 1)const renderer new THREE.WebGLRenderer({ antialias: true, alpha: true })renderer.setPixelRatio(window.devicePixelRatio * 1.3)renderer.setSize(box.clientWidth, box.clientHeight)box.appendChild(renderer.domElement)new OrbitControls(camera, renderer.domElement)scene.add(new THREE.AxesHelper(100))animate()function animate() {requestAnimationFrame(animate)renderer.render(scene, camera)}window.onresize () {renderer.setSize(box.clientWidth, box.clientHeight)camera.aspect box.clientWidth / box.clientHeightcamera.updateProjectionMatrix()}const urls [0, 1, 2, 3, 4, 5].map(k (FILE_HOST files/sky/skyBox0/ (k 1) .png));const textureCube new THREE.CubeTextureLoader().load(urls);new GLTFLoader().load(FILE_HOST models/whitebuild.glb, (gltf) {const model gltf.scenemodel.traverse((child) {if (child.isMesh) {child.material.envMap textureCubeconst { geometry } child const edges new THREE.EdgesGeometry(geometry) let lineGeometry new LineSegmentsGeometry().fromEdgesGeometry(edges) const material new LineMaterial({ color: 0xfcde8c, linewidth: 2.5, envMap: textureCube, resolution: new THREE.Vector2(box.clientWidth, box.clientHeight) })const lines new LineSegments2(lineGeometry, material) lines.computeLineDistances() lines.applyMatrix4(child.matrixWorld)scene.add(lines) }})scene.add(model) })完整源码GitHub小结本文提供建筑线条完整 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