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threejs-animation

Implement keyframe, skeletal, and morph-target animations for Three.js GLTF/GLB scenes.

Updated Jan 31, 2026
Search Tags:#animation#webgl#threejs#skeletal#morph-targets#gltf#mixer
One-click install
npx skills add https://github.com/Clinscott/CStar --skill threejs-animation-clinscott
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: threejs-animation
Source: https://github.com/Clinscott/CStar/tree/main/skills_db/threejs-skills/skills/threejs-animation
Command: npx skills add https://github.com/Clinscott/CStar --skill threejs-animation-clinscott

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill helps developers implement and manage complex Three.js animations in web scenes, reducing integration time and boosting visual quality.

Core Features & Use Cases

  • Support for keyframe, skeletal, and morph-target animations
  • Animation blending and crossfades using AnimationAction and AnimationMixer
  • Easy loading and playback of GLTF/GLB animations and clips in interactive scenes
  • Performance tips and best practices for smooth real-time animation

Quick Start

Create and control keyframe, skeletal, and morph target animations in your Three.js scene using the provided guide.

Frequently Asked Questions about threejs-animation

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I load and play GLTF animations in a Three.js scene?▼

Blend skeletal animations in Three.js using AnimationAction methods to crossfade between clips, managing simultaneous morph-target updates and keyframe timelines via a single AnimationMixer instance.

What is the best way to handle morph-target animations with WebGL?▼

Handle morph-target animations in WebGL by binding morph attributes to AnimationClip tracks, updating target influences per frame through AnimationMixer to achieve smooth facial or shape deformations.

How do I keep Three.js animations performant during real-time rendering?▼

Keep Three.js animations performant by applying performance-aware update loops, optimizing AnimationMixer delta calculations, and minimizing redundant skeletal or morph-target recalculations during WebGL rendering.

Can I use AnimationMixer to blend multiple keyframe clips on a single GLTF model?▼

AnimationMixer blends multiple keyframe clips on a single GLTF model by managing concurrent AnimationAction instances, enabling seamless transitions and layered skeletal or morph-target animations.

Why do my Three.js skeletal animations not play correctly after loading a GLB file?▼

Three.js skeletal animations fail to play when GLB clips are not properly bound to the skeleton or when the AnimationMixer update loop is missing, requiring correct clip assignment and delta-time updates.

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