Threejs Webgl

作者 freshtechbro1da73febff0c无许可证1K 个星标收录于 2026年10月8日更新于 2026年10月8日仓库10个月前更新

Comprehensive skill for Three.js 3D web development. Use this skill when building interactive 3D scenes, WebGL/WebGPU applications, product configurators, 3D visualizations, or immersive web experiences. Triggers on tasks involving Three.js, 3D rendering, scenes, cameras, meshes, materials, lights, animations, textures, or WebGL/WebGPU rendering.

包含脚本Software DevelopmentDesign & Creative
AI 生成的概览

指导 Three.js WebGL/WebGPU 开发，用于构建交互式 3D 网页场景，并提供参考文档与起始场景。

功能
提供构建 Three.js 3D 网页应用的指导和代码模式，涵盖场景、相机、渲染器、几何体、材质、灯光、纹理、动画、阴影、射线检测、后处理和性能优化。它附带 API、材质和优化方面的参考文档，以及一个起始 HTML/JS 场景和一个用于生成场景样板代码的 Python 脚本。
适用场景
适用于构建交互式 3D 网页体验、产品配置器、3D 可视化或 WebGL/WebGPU 渲染。也适合调试或优化现有 Three.js 场景，以及将 Three.js 与动画或 UI 库集成。
运行要求
需要具备 Three.js 库的 JavaScript 环境，以及支持 WebGL 或 WebGPU 的浏览器。它附带可执行脚本，包括一个 Python 设置脚本，并引用 GLTFLoader、DRACOLoader 和后处理通道等可选附加组件。

Three.js WebGL/WebGPU Development

Overview

Three.js is the industry-standard JavaScript library for creating 3D graphics in web browsers using WebGL and WebGPU. This skill provides comprehensive guidance for building performant, interactive 3D experiences including scenes, cameras, renderers, geometries, materials, lights, textures, and animations.

Core Concepts

Scene Graph Architecture

Three.js uses a hierarchical scene graph where all 3D objects are organized in a tree structure:

javascript
Scene├── Camera├── Lights│   ├── AmbientLight│   ├── DirectionalLight│   └── PointLight├── Meshes│   ├── Mesh (Geometry + Material)│   └── InstancedMesh└── Groups

Essential Components

Every Three.js application requires these core elements:

  1. Scene: Container for all 3D objects
  2. Camera: Defines the viewing perspective
  3. Renderer: Draws the scene to canvas (WebGL or WebGPU)
  4. Geometry: Defines the shape of objects
  5. Material: Defines the surface appearance
  6. Mesh: Combines geometry and material

Quick Start Pattern

Basic Scene Setup

javascript
import * as THREE from 'three';import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
// Scene, Camera, Rendererconst scene = new THREE.Scene();scene.background = new THREE.Color(0x333333);
const camera = new THREE.PerspectiveCamera(  75, // FOV  window.innerWidth / window.innerHeight, // Aspect ratio  0.1, // Near clipping plane  1000 // Far clipping plane);camera.position.set(0, 2, 5);
const renderer = new THREE.WebGLRenderer({ antialias: true });renderer.setSize(window.innerWidth, window.innerHeight);renderer.setPixelRatio(window.devicePixelRatio);renderer.shadowMap.enabled = true;document.body.appendChild(renderer.domElement);
// Lightingconst ambientLight = new THREE.AmbientLight(0xffffff, 0.5);scene.add(ambientLight);
const directionalLight = new THREE.DirectionalLight(0xffffff, 1);directionalLight.position.set(5, 10, 7.5);directionalLight.castShadow = true;scene.add(directionalLight);
// Controlsconst controls = new OrbitControls(camera, renderer.domElement);controls.enableDamping = true;controls.dampingFactor = 0.05;
// Animation Loopfunction animate() {  requestAnimationFrame(animate);  controls.update();  renderer.render(scene, camera);}
animate();
// Handle Resizewindow.addEventListener('resize', () => {  camera.aspect = window.innerWidth / window.innerHeight;  camera.updateProjectionMatrix();  renderer.setSize(window.innerWidth, window.innerHeight);});

WebGPU Setup (Modern Alternative)

javascript
import * as THREE from 'three/webgpu';
const renderer = new THREE.WebGPURenderer({ antialias: true });renderer.setPixelRatio(window.devicePixelRatio);renderer.setSize(window.innerWidth, window.innerHeight);renderer.setAnimationLoop(animate);renderer.toneMapping = THREE.LinearToneMapping;renderer.toneMappingExposure = 1;document.body.appendChild(renderer.domElement);

Common Patterns

1. Creating Meshes with Materials

javascript
// Basic Meshconst geometry = new THREE.BoxGeometry(1, 1, 1);const material = new THREE.MeshStandardMaterial({  color: 0x00ff00,  roughness: 0.5,  metalness: 0.5});const cube = new THREE.Mesh(geometry, material);scene.add(cube);
// Textured Meshconst loader = new THREE.TextureLoader();const texture = loader.load('texture.jpg');texture.colorSpace = THREE.SRGBColorSpace;
const texturedMaterial = new THREE.MeshStandardMaterial({  map: texture});const mesh = new THREE.Mesh(geometry, texturedMaterial);scene.add(mesh);

2. Lighting Strategies

javascript
// Three-Point Lighting Setupfunction setupThreePointLight(scene) {  // Key Light (Main)  const keyLight = new THREE.DirectionalLight(0xffffff, 3);  keyLight.position.set(5, 10, 7.5);  keyLight.castShadow = true;  scene.add(keyLight);
  // Fill Light (Softens shadows)  const fillLight = new THREE.DirectionalLight(0xffffff, 1);  fillLight.position.set(-5, 5, -5);  scene.add(fillLight);
  // Rim Light (Edge definition)  const rimLight = new THREE.DirectionalLight(0xffffff, 0.5);  rimLight.position.set(0, 5, -10);  scene.add(rimLight);
  // Ambient (Base illumination)  const ambient = new THREE.AmbientLight(0x404040, 0.5);  scene.add(ambient);}
// Physical Light (Realistic)const bulbLight = new THREE.PointLight(0xffee88, 1, 100, 2);bulbLight.power = 1700; // Lumens (100W bulb equivalent)bulbLight.castShadow = true;scene.add(bulbLight);
// Hemisphere Light (Sky + Ground)const hemiLight = new THREE.HemisphereLight(  0xddeeff, // Sky color  0x0f0e0d, // Ground color  0.02);scene.add(hemiLight);

3. Instanced Geometry (Performance)

javascript
// For rendering thousands of similar objects efficientlyconst geometry = new THREE.SphereGeometry(0.1, 16, 16);const material = new THREE.MeshStandardMaterial({ color: 0xff0000 });const instancedMesh = new THREE.InstancedMesh(geometry, material, 1000);
const matrix = new THREE.Matrix4();const color = new THREE.Color();
for (let i = 0; i < 1000; i++) {  matrix.setPosition(    Math.random() * 10 - 5,    Math.random() * 10 - 5,    Math.random() * 10 - 5  );  instancedMesh.setMatrixAt(i, matrix);  instancedMesh.setColorAt(i, color.setHex(Math.random() * 0xffffff));}
instancedMesh.instanceMatrix.needsUpdate = true;scene.add(instancedMesh);

4. Loading 3D Models (glTF)

javascript
import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';import { DRACOLoader } from 'three/addons/loaders/DRACOLoader.js';
// Setup loadersconst dracoLoader = new DRACOLoader();dracoLoader.setDecoderPath('/draco/');
const gltfLoader = new GLTFLoader();gltfLoader.setDRACOLoader(dracoLoader);
// Load modelgltfLoader.load('model.glb', (gltf) => {  const model = gltf.scene;
  // Enable shadows  model.traverse((child) => {    if (child.isMesh) {      child.castShadow = true;      child.receiveShadow = true;    }  });
  scene.add(model);
  // Handle animations  if (gltf.animations.length > 0) {    const mixer = new THREE.AnimationMixer(model);    const action = mixer.clipAction(gltf.animations[0]);    action.play();
    // In animation loop:    // mixer.update(deltaTime);  }});

5. Shadow Configuration

javascript
// Enable shadows on rendererrenderer.shadowMap.enabled = true;renderer.shadowMap.type = THREE.PCFSoftShadowMap; // or VSMShadowMap
// Configure light shadowsdirectionalLight.castShadow = true;directionalLight.shadow.mapSize.width = 2048;directionalLight.shadow.mapSize.height = 2048;directionalLight.shadow.camera.near = 0.5;directionalLight.shadow.camera.far = 50;directionalLight.shadow.camera.left = -10;directionalLight.shadow.camera.right = 10;directionalLight.shadow.camera.top = 10;directionalLight.shadow.camera.bottom = -10;directionalLight.shadow.radius = 4;directionalLight.shadow.blurSamples = 8;
// Objects casting/receiving shadowsmesh.castShadow = true;mesh.receiveShadow = true;

6. Raycasting (Interaction)

javascript
const raycaster = new THREE.Raycaster();const mouse = new THREE.Vector2();
function onMouseClick(event) {  mouse.x = (event.clientX / window.innerWidth) * 2 - 1;  mouse.y = -(event.clientY / window.innerHeight) * 2 + 1;
  raycaster.setFromCamera(mouse, camera);  const intersects = raycaster.intersectObjects(scene.children, true);
  if (intersects.length > 0) {    const object = intersects[0].object;    object.material.color.set(0xff0000);  }}
window.addEventListener('click', onMouseClick);

Integration Patterns

With GSAP for Animation

javascript
import gsap from 'gsap';
// Animate cameragsap.to(camera.position, {  x: 5,  y: 3,  z: 10,  duration: 2,  ease: "power2.inOut",  onUpdate: () => {    camera.lookAt(scene.position);  }});
// Animate mesh propertiesgsap.to(mesh.rotation, {  y: Math.PI * 2,  duration: 3,  repeat: -1,  ease: "none"});

With React (see react-three-fiber skill)

javascript
// Three.js integrates naturally with React Three Fiber// Use the react-three-fiber skill for React integration patterns

With Post-Processing

javascript
import { EffectComposer } from 'three/addons/postprocessing/EffectComposer.js';import { RenderPass } from 'three/addons/postprocessing/RenderPass.js';import { UnrealBloomPass } from 'three/addons/postprocessing/UnrealBloomPass.js';
const composer = new EffectComposer(renderer);composer.addPass(new RenderPass(scene, camera));
const bloomPass = new UnrealBloomPass(  new THREE.Vector2(window.innerWidth, window.innerHeight),  1.5, // strength  0.4, // radius  0.85 // threshold);composer.addPass(bloomPass);
// In animation loop:composer.render();

Performance Optimization

1. Geometry Reuse

javascript
// Bad: Creates new geometry for each meshfor (let i = 0; i < 100; i++) {  const geometry = new THREE.BoxGeometry(1, 1, 1);  const mesh = new THREE.Mesh(geometry, material);  scene.add(mesh);}
// Good: Reuse geometryconst sharedGeometry = new THREE.BoxGeometry(1, 1, 1);for (let i = 0; i < 100; i++) {  const mesh = new THREE.Mesh(sharedGeometry, material);  scene.add(mesh);}

2. Use InstancedMesh for Repeated Objects

For hundreds/thousands of identical objects, use InstancedMesh (see pattern above).

3. Texture Optimization

javascript
// Compress texturestexture.generateMipmaps = true;texture.minFilter = THREE.LinearMipmapLinearFilter;texture.magFilter = THREE.LinearFilter;
// Use power-of-two dimensions (512, 1024, 2048)// Consider texture atlases for multiple small textures

4. Level of Detail (LOD)

javascript
const lod = new THREE.LOD();lod.addLevel(highDetailMesh, 0);    // 0-50 unitslod.addLevel(mediumDetailMesh, 50);  // 50-100 unitslod.addLevel(lowDetailMesh, 100);    // 100+ unitsscene.add(lod);

5. Frustum Culling

Three.js automatically culls objects outside the camera's view. Ensure objects have correct bounding spheres:

javascript
mesh.geometry.computeBoundingSphere();

6. Dispose Resources

javascript
function disposeScene() {  scene.traverse((object) => {    if (object.geometry) object.geometry.dispose();    if (object.material) {      if (Array.isArray(object.material)) {        object.material.forEach(material => material.dispose());      } else {        object.material.dispose();      }    }  });  renderer.dispose();}

Best Practices

1. Use Animation Clocks for Consistent Timing

javascript
const clock = new THREE.Clock();
function animate() {  const deltaTime = clock.getDelta();  const elapsedTime = clock.getElapsedTime();
  // Use deltaTime for frame-independent animations  mesh.rotation.y += deltaTime * Math.PI * 0.5; // 90° per second
  renderer.render(scene, camera);}

2. Camera Setup Guidelines

  • FOV: 45-75° for most applications
  • Near plane: As far as possible (avoid z-fighting)
  • Far plane: As close as possible (precision)
  • Aspect ratio: Always match canvas dimensions

3. Material Selection

  • MeshBasicMaterial: Unlit, flat colors (debugging, UI)
  • MeshLambertMaterial: Cheap diffuse lighting (mobile)
  • MeshPhongMaterial: Specular highlights (older standard)
  • MeshStandardMaterial: PBR, realistic (recommended)
  • MeshPhysicalMaterial: Advanced PBR (clearcoat, transmission)

4. Coordinate System

  • Three.js uses right-handed coordinate system
  • +Y is up, +Z is toward camera, +X is right
  • Rotations use radians (Math.PI = 180°)

5. Scene Organization

javascript
// Group related objectsconst building = new THREE.Group();building.add(walls, roof, windows);scene.add(building);
// Use meaningful namesmesh.name = 'player-character';const found = scene.getObjectByName('player-character');

Common Pitfalls

1. Not Updating Aspect Ratio on Resize

Always update camera aspect ratio and projection matrix when window resizes.

2. Creating New Objects in Animation Loop

javascript
// Bad: Memory leakfunction animate() {  const geometry = new THREE.BoxGeometry(); // Created every frame!  // ...}
// Good: Create once outside loopconst geometry = new THREE.BoxGeometry();function animate() {  // Reuse geometry}

3. Forgetting to Enable Shadows

Remember to enable shadows on renderer, lights, and objects.

4. Z-Fighting (Flickering)

  • Increase near plane distance
  • Decrease far plane distance
  • Avoid overlapping coplanar surfaces
  • Use material.polygonOffset = true with material.polygonOffsetFactor

5. Color Space Issues

javascript
// Always set color space for texturestexture.colorSpace = THREE.SRGBColorSpace;
// Set renderer output encodingrenderer.outputColorSpace = THREE.SRGBColorSpace;

6. Not Disposing Resources

Always call .dispose() on geometries, materials, textures, and renderers when no longer needed.

Resources

This skill includes bundled resources to accelerate Three.js development:

references/

  • api_reference.md: Quick API reference for core classes (Scene, Camera, Renderer, etc.)
  • materials_guide.md: Comprehensive material types and properties
  • optimization_checklist.md: Performance optimization strategies

scripts/

  • setup_scene.py: Generate boilerplate Three.js scene setup code
  • texture_optimizer.py: Batch optimize textures for web (resize, compress)
  • gltf_validator.py: Validate glTF models before use

assets/

  • starter_scene/: Complete HTML/JS boilerplate project
  • shaders/: Custom GLSL shader examples (vertex, fragment)
  • hdri/: Environment maps for PBR lighting
  • draco/: DRACO decoder for compressed models

Advanced Topics

Custom Shaders (GLSL)

javascript
const material = new THREE.ShaderMaterial({  uniforms: {    uTime: { value: 0.0 },    uColor: { value: new THREE.Color(0x00ff00) }  },  vertexShader: `    varying vec2 vUv;    void main() {      vUv = uv;      gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);    }  `,  fragmentShader: `    uniform float uTime;    uniform vec3 uColor;    varying vec2 vUv;    void main() {      gl_FragColor = vec4(uColor * vUv.x, 1.0);    }  `});

Render Targets (Render-to-Texture)

javascript
const renderTarget = new THREE.WebGLRenderTarget(512, 512);
// Render scene to texturerenderer.setRenderTarget(renderTarget);renderer.render(scene, camera);renderer.setRenderTarget(null);
// Use textureconst material = new THREE.MeshBasicMaterial({  map: renderTarget.texture});

GPU Computation (GPGPU)

Use GPUComputationRenderer for particle simulations, cloth physics, etc.

When to Use This Skill

Use this skill when:

  • Building interactive 3D web experiences
  • Creating product configurators or visualizers
  • Implementing WebGL/WebGPU rendering
  • Working with 3D models, scenes, or animations
  • Optimizing Three.js performance
  • Integrating Three.js with other libraries (GSAP, React, etc.)
  • Debugging Three.js rendering issues

For React integration, use the react-three-fiber skill. For animation, combine with the gsap-scrolltrigger skill. For UI animations, use the motion-framer skill.

来源与署名

来源：freshtechbro/claudedesignskills位于.claude/skills/threejs-webgl提交1da73fe

许可证： 无许可证

内容归原作者所有。SourceWeft 从公开仓库中收录这些内容。

举报或申请下架

更多来自 freshtechbro/claudedesignskills 的技能

Web3d Integration Patterns

freshtechbro

在 3D 网页应用中组合 Three.js、GSAP、React Three Fiber、Motion 与 React Spring 的架构模式。

Software Development1K10个月前更新

Substance 3d Texturing

freshtechbro

指导在 Substance 3D Painter 中创建并导出面向网页与实时引擎的 PBR 贴图，并提供 Python 批量自动化。

包含脚本
Design & Creative1K10个月前更新

Scroll Reveal Libraries

freshtechbro

指导使用 AOS 库为网页添加简单的滚动触发显现动画。

包含脚本
Software Development1K10个月前更新

Rive Interactive

freshtechbro

指导在 React 中使用状态机、输入、ViewModel 和事件构建可交互的 Rive 矢量动画。

包含脚本
Design & Creative1K10个月前更新

Pixijs 2d

freshtechbro

指导使用 PixiJS WebGL/WebGPU 引擎构建高性能 2D 图形、粒子效果和交互式画布。

包含脚本
Software Development1K10个月前更新

Motion Framer

freshtechbro

指导使用 Motion（Framer Motion）为 React 界面制作动画，涵盖手势、变体、布局与退场动画。

包含脚本
Software Development1K10个月前更新

更多Software Development技能

Playground

anthropics

精选

构建自包含的交互式 HTML 演练场，包含控件、实时预览和可复制的提示词输出。

Software Development37K今天更新

M5 Onboard

anthropics

精选

通过 USB 检测 M5Stack ESP32 开发板，刷写 UIFlow 2.0 固件并安装 MicroPython 应用包。

Software Development37K今天更新

Cardputer Buddy

anthropics

精选

指导迭代 Cardputer-Adv 的 MicroPython 应用包：添加应用、通过 USB 串口推送文件、查看日志并运行 REPL 命令。

Software Development37K今天更新

Web Design Guidelines

vercel-labs

精选

依据从远程来源获取的 Web Interface Guidelines 审查 UI 代码，并以 file:line 形式报告问题。

Software Development32K5周前更新

Vercel React Native Skills

vercel-labs

精选

React Native 与 Expo 最佳实践规则，涵盖列表性能、动画、导航、UI 模式、状态与 monorepo 配置。

Software Development32K5周前更新

Vercel React Best Practices

vercel-labs

精选

Vercel 的 React 与 Next.js 性能指南，以 70 条规则的形式用于编写、审查和重构代码。

Software Development32K5周前更新