threejs

Three.js Development

Build high-performance 3D web applications using Three.js. Contains 556 searchable examples across 13 categories, 60 API classes, and 20 use-case templates.

When to Use

• Building 3D scenes, games, or visualizations
• Loading 3D models (GLTF, FBX, OBJ)
• Implementing animations, physics, or VR/XR
• Creating particle effects or custom shaders
• Optimizing rendering performance

Search Examples & API

Use the search CLI to find relevant examples and API references:

python3 .claude/skills/threejs/scripts/search.py "<query>" [--domain <domain>] [-n <max_results>]

Search Domains

Domain	Use For	Example Query
examples	Find code examples	"particle effects gpu"
api	Class/method reference	"PerspectiveCamera"
use-cases	Project recommendations	"product configurator"
categories	Browse categories	"webgpu"

Quick Examples

# Find particle/compute examples
python3 .claude/skills/threejs/scripts/search.py "particle compute webgpu"

# Search API for camera classes
python3 .claude/skills/threejs/scripts/search.py "camera" --domain api

# Get examples for a use case
python3 .claude/skills/threejs/scripts/search.py "product configurator" --use-case

# Filter by category
python3 .claude/skills/threejs/scripts/search.py --category webgpu -n 10

# Filter by complexity
python3 .claude/skills/threejs/scripts/search.py --complexity high -n 5

Example Categories

Category	Count	Description
webgl	216	Standard WebGL rendering
webgpu (wip)	190	Modern WebGPU + compute shaders
webgl / advanced	48	Low-level GPU, custom shaders
webgl / postprocessing	27	Bloom, SSAO, SSR, DOF
webxr	26	VR/AR experiences
physics	13	Physics simulation

Common Use Cases

Use Case	Recommended	Complexity
Product Configurator	GLTF, PBR, EnvMaps	Medium
Game Development	Animation, Physics, Controls	High
Data Visualization	BufferGeometry, Points	Medium
360 Panorama	Equirectangular, WebXR	Low
Architectural Viz	GLTF, HDR, CSM Shadows	High

Quick Start

// 1. Scene, Camera, Renderer
const scene = new THREE.Scene();
const camera = new THREE.PerspectiveCamera(75, window.innerWidth/window.innerHeight, 0.1, 1000);
const renderer = new THREE.WebGLRenderer({ antialias: true });
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.setPixelRatio(window.devicePixelRatio);
document.body.appendChild(renderer.domElement);

// 2. Lighting
scene.add(new THREE.AmbientLight(0x404040));
const dirLight = new THREE.DirectionalLight(0xffffff, 1);
dirLight.position.set(5, 5, 5);
scene.add(dirLight);

// 3. Load GLTF Model
import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
const loader = new GLTFLoader();
loader.load('model.glb', (gltf) => scene.add(gltf.scene));

// 4. Animation Loop
function animate() {
  requestAnimationFrame(animate);
  renderer.render(scene, camera);
}
animate();

Progressive Reference Files

Level 1: Fundamentals

• references/00-fundamentals.md - Core concepts, scene graph
• references/01-getting-started.md - Setup, basic rendering

Level 2: Common Tasks

• references/02-loaders.md - GLTF, FBX, OBJ loaders
• references/03-textures.md - Texture types, mapping
• references/04-cameras.md - Camera types, controls
• references/05-lights.md - Light types, shadows
• references/06-animations.md - AnimationMixer, clips
• references/11-materials.md - PBR, standard materials
• references/18-geometry.md - BufferGeometry, primitives

Level 3: Interactive

• references/08-interaction.md - Raycasting, picking
• references/09-postprocessing.md - Bloom, SSAO, SSR
• references/10-controls.md - OrbitControls, etc.

Level 4: Advanced

• references/12-performance.md - Instancing, LOD, batching
• references/13-node-materials.md - TSL shader graphs
• references/17-shader.md - Custom GLSL shaders

Level 5: Specialized

• references/14-physics-vr.md - Physics, WebXR
• references/16-webgpu.md - WebGPU, compute shaders

External Resources

• Docs: https://threejs.org/docs/
• Examples: https://threejs.org/examples/
• Editor: https://threejs.org/editor/
• Discord: https://discord.gg/56GBJwAnUS