# scroll-scrubbed-visual-sequence

Builds reversible visual scenes driven by native scrolling, from product assembly to interface walkthroughs. Useful for interactive hero sections, diagrams, and image sequences.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 1500 installs · ★ 7001
- Author: MengTo
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/MengTo/Skills/tree/HEAD/agent-skills/web-design/scroll-scrubbed-visual-sequence/SKILL.md
- Updated: 2026-10-25
- HTML: https://affpapa.org/en/nevibecode/skills/scroll-scrubbed-visual-sequence

## What it does

This skill structures scenes where scroll position determines the exact visual state in both directions. It uses normalized progress, a sticky or pinned stage, a separate layer for copy and controls, and a clean release before the next section.

Choose a renderer for the job: video, an image sequence, canvas, SVG, DOM, or WebGL. Projects that already use GSAP can coordinate the scene with `ScrollTrigger`; a dependency-free path measures the section on scroll and schedules rendering with `requestAnimationFrame`. Image loading is staged, and stale requests are cancelled.

Headings, captions, and the CTA stay in semantic HTML. With `prefers-reduced-motion: reduce`, the skill removes pinning and scrubbing, renders a selected static frame, and restores normal document flow. The GSAP route requires GSAP in the project; the alternative does not use that integration.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add MengTo/Skills --skill scroll-scrubbed-visual-sequence -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/scroll-scrubbed-visual-sequence/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/scroll-scrubbed-visual-sequence/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add MengTo/Skills --skill scroll-scrubbed-visual-sequence -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/scroll-scrubbed-visual-sequence/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add MengTo/Skills --skill scroll-scrubbed-visual-sequence -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/scroll-scrubbed-visual-sequence/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install MengTo/Skills scroll-scrubbed-visual-sequence
```

2. **Manually: put the files in place**
- File: `.github/skills/scroll-scrubbed-visual-sequence/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add MengTo/Skills --skill scroll-scrubbed-visual-sequence -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/MengTo/Skills --path agent-skills/web-design/scroll-scrubbed-visual-sequence
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/scroll-scrubbed-visual-sequence/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add MengTo/Skills --skill scroll-scrubbed-visual-sequence -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/MengTo/Skills/tree/HEAD/agent-skills/web-design/scroll-scrubbed-visual-sequence/SKILL.md

## When to use it
- map scroll position to a visual state
- build a sticky stage that reverses cleanly
- choose a renderer for video, frames, canvas, or SVG
- keep copy and controls usable without motion

## Example prompts
- Build a product hero where native scrolling assembles the object and reverses the sequence when the user scrolls back.
- Create an image-sequence scene with a sticky stage, nearby-frame loading, and a static state for `prefers-reduced-motion: reduce`.
- Make an SVG diagram driven by normalized progress, with headings and the CTA kept outside the rendered artwork.

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: def18b4f8d2474f3.

BEGIN THIRD-PARTY FILE def18b4f8d2474f3
````text
---
name: scroll-scrubbed-visual-sequence
description: Build reversible scroll-controlled visual transformations with a pinned or sticky stage, normalized progress, and video, image-sequence, canvas, SVG, or DOM renderers. Use for hero transformations, product assembly, interface state walkthroughs, object rotation, diagrams, or photo sequences that must move forward and backward with native scrolling.
---

# Scroll-Scrubbed Visual Sequence

Turn one visual transformation into a responsive scroll instrument. Keep the page usable without motion and keep the renderer replaceable.

## Define the sequence

Write the visual states before coding:

```js
const sequence = {
  scrollVh: 280,
  frameCount: 96,
  fit: "contain",
  posterFrame: 0,
  reducedMotionFrame: 95,
  copyStops: [0, 0.42, 0.78]
};
```

Use one normalized value for every renderer:

```js
const progress = Math.min(1, Math.max(0,
  (viewportTop - sectionTop) / (sectionHeight - viewportHeight)
));
```

Never make wheel delta, elapsed time, or autoplay the source of truth. Native scroll position must determine the exact visual state in both directions.

## Choose the renderer

- Use video when the sequence is continuous, photographic, or expensive to render live. Encode frequent keyframes, preload metadata, reserve the aspect ratio, and coalesce `currentTime` writes in `requestAnimationFrame`.
- Use an image sequence when exact art-directed frames matter. Preload the current frame first, then nearby frames; never block first paint on the whole set.
- Use canvas for procedural drawing or compositing. Cap device pixel ratio at 2 and redraw only when progress changes.
- Use SVG or DOM for diagrams, product cards, interface states, and accessible text. Drive transforms, opacity, clip paths, and CSS variables instead of layout-heavy properties.
- Use WebGL only when depth, lighting, or a real 3D camera materially strengthens the idea. Provide a static poster and dispose resources.

## Build the scroll stage

1. Keep the section in normal document flow and set its height from `scrollVh`.
2. Put the visual in a `position: sticky` stage sized to the viewport.
3. Keep copy and controls in a separate layer. Do not bake essential text into frames.
4. Map progress to the renderer with no implicit easing. Add optional smoothing after correctness is proven.
5. Refresh measurements after fonts and intrinsic media sizes settle.
6. Release the sticky stage cleanly before the next section and keep the footer reachable.
````
END THIRD-PARTY FILE def18b4f8d2474f3

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First 2503 of 4640 bytes. © MengTo · MIT · https://github.com/MengTo/Skills/tree/HEAD/agent-skills/web-design/scroll-scrubbed-visual-sequence/SKILL.md

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---
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