点、线 ·Points Lines· ▶ 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PointsPointsMaterial绘制点精灵LineLineBasicMaterial绘制线段size是屏幕像素而非世界单位效果说明同一三角形顶点以黄色大点和红色线段两种方式叠加显示。旋转场景时可看到线的连接顺序。核心概念WebGL 有三种基本绘制模式POINTS → Three.PointsLINES → Three.Line / LineSegments / LineLoop TRIANGLES → Three.MeshPointsMaterial.sizenew THREE.PointsMaterial({color: 0xffff00, size: 10.0 // 单位像素screen space不受透视影响 });若需要世界空间大小的点远小近大需自定义 Shader 或在顶点着色器里用gl_PointSize。Line 连接规则THREE.Line按position数组顺序依次连线0→1→2→0→1→2…若要单独控制每条边用LineSegments闭合环用LineLoop。实现步骤复用 网格 的 BufferGeometry6 顶点PointsPointsMaterial→ 黄色点LineLineBasicMaterial→ 红色线两者scene.add代码要点import * as THREE from three; import { OrbitControls } from three/examples/jsm/controls/OrbitControls.jsconst scene new THREE.Scene();// 网格模型Mesh其实就一个一个三角形(面)拼接构成 const geometry new THREE.BufferGeometry(); const vertices new Float32Array([ 0, 0, 0, 50, 0, 0, 50, 0, 50,0, 0, 0, 0, 0, 50, 50, 0, 50, ]);geometry.attributes.position new THREE.BufferAttribute(vertices, 3);// 点渲染模式 const material2 new THREE.PointsMaterial({ color: 0xffff00, size: 10.0 //点对象像素尺寸 }); const points new THREE.Points(geometry, material2); //点模型对象 scene.add(points);// 线材质对象 const material1 new THREE.LineBasicMaterial({ color: 0xff0000 //线条颜色 }); // 创建线模型对象 const line new THREE.Line(geometry, material1); scene.add(line);// AxesHelper const axesHelper new THREE.AxesHelper(150); scene.add(axesHelper);// 相机 const camera new THREE.PerspectiveCamera(); //相机 camera.position.set(200, 200, 200); //相机位置 camera.lookAt(0, 0, 0); //相机观察位置// 渲染器 const renderer new THREE.WebGLRenderer(); // 创建渲染器 const box document.getElementById(box); renderer.setSize(box.clientWidth, box.clientHeight); //渲染区域 renderer.render(scene, camera); //执行渲染 box.appendChild(renderer.domElement);;const controls new OrbitControls(camera, renderer.domElement); controls.addEventListener(change, function () { renderer.render(scene, camera); });完整源码GitHub小结本文提供点、线完整 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