Three.js Animation Skill

When to use

• Animating 3D models (walk cycles, character rigs, product reveals)
• Keyframe-based animations from Blender/Maya exported as glTF
• Procedural motion (orbiting, waving, pulsing)
• Morph target animations (facial expressions, shape morphing)

Animation system overview

• AnimationMixer: Manages all animations for an object
• AnimationClip: Contains keyframe tracks
• AnimationAction: Controls playback (play, pause, blend, loop)

Quick recipe — Play glTF animation

import { GLTFLoader } from "three/addons/loaders/GLTFLoader.js";
const loader = new GLTFLoader();
const clock = new THREE.Clock();
let mixer;