# Animate Three.js Scenes With Guided Patterns

Three.js animation work can become difficult when keyframes, mixers, rigs, and morph targets interact. This skill gives Claude, Codex, and Claude Code focused guidance for building reliable animation flows.

## Install

```bash
npx skillstore add cloudai-x/threejs-animation
```

## Metadata

- - Status: approved
- - Slug: cloudai-x-threejs-animation
- - Version: 1.0.0
- - Author: cloudai-x
- - GitHub username: cloudai-x
- - License: MIT
- - Repository: https://github.com/cloudai-x/threejs-skills/tree/main/skills/threejs-animation/
- - Ref: main
- - Supported tools: Claude, Codex, Claude Code
- - Risk level: safe
- - Quality score: 79
- - Quality tier: bronze
- - Public page: https://skillstore.pages.dev/skills/cloudai-x-threejs-animation
- - Manifest: https://skillstore.pages.dev/api/skills/cloudai-x-threejs-animation/manifest

## Capabilities

- Explains how to create AnimationClip and KeyframeTrack objects for positions, rotations, colors, and visibility.
- Shows how AnimationMixer and AnimationAction control clip playback, looping, fading, and crossfading.
- Guides loading and playing GLTF animation clips with named clip selection.
- Covers skeletal animation tasks such as bone lookup, bone rotation, helpers, and attachments.
- Documents morph target influence control and keyframed morph animation.
- Provides procedural motion patterns, including smoothing, springs, oscillation, and animation performance tips.

## Use Cases

- Prototype object motion: Create smooth position, rotation, scale, and color animation patterns for interactive WebGL scenes.
- Integrate animated GLTF models: Load a model, inspect available clips, play named animations, and update mixers correctly in the render loop.
- Blend character actions: Plan idle, walk, run, additive, skeletal, and morph target animation behavior for game-like interfaces.

## Prompt Templates

### Start a basic animation loop

```
Use the threejs-animation skill to add simple procedural motion to my existing Three.js mesh. Include clock usage, delta time, and render-loop placement.
```

### Build keyframed object motion

```
Use the threejs-animation skill to create a keyframed animation for position, rotation, and material color. Explain which KeyframeTrack types I should use.
```

### Play and blend GLTF clips

```
Use the threejs-animation skill to load a GLTF model, list its animation clips, play a named clip, and crossfade to another clip.
```

### Design a character animation system

```
Use the threejs-animation skill to design an idle, walk, run, additive, bone attachment, and morph target animation plan for a Three.js character.
```

## Limitations

- It is a documentation skill and does not include runnable project files or installed dependencies.
- It assumes the user already has a Three.js scene, renderer, camera, and animation loop.
- It does not provide complete character rigs, model assets, or exported GLTF files.
- It does not replace profiling on target hardware for complex animation scenes.

## Best Practices

- Use delta time from THREE.Clock so animation speed stays stable across different frame rates.
- Keep mixer.update calls in the main render loop and pause updates when animated objects are not visible.
- Name clips, bones, and morph targets clearly so lookup and blending logic stays easy to maintain.

## Anti Patterns

- Do not update animations with fixed frame assumptions when the render rate can vary.
- Do not create many independent mixers for repeated models when shared clips and careful reuse are possible.
- Do not blend actions without resetting weights, fade state, and loop behavior for each transition.

## Security Audit

- - Safe to publish: true
- - Audited at: 2026-06-28T23:28:36.353\+00:00
- - Summary: The static analyzer flagged many Markdown code fences as Ruby or shell backtick execution, but the file contains documentation examples for Three.js. The weak cryptography and certificate key alerts are false positives from ordinary words and Object.keys usage, with no prompt injection, credential access, installer script, or data exfiltration evidence found.

## Stats

- - Views: 164
- - Downloads: 15
- - Favorites: 0
- - Popularity score: 0