# Ripple

A field of horizontal hairlines that bend like liquid. The pointer opens a lens in them: the lines above lift, the lines below sink, and the space between them opens.

- Slug: `ripple` · Category: lines · Pro (LicenseRef-Textures-Pro) · v1.0.0
- What moves: A lens opens in the hairlines under the pointer: the lines above lift, the lines below sink, the space between them opens; it flattens when the pointer leaves.
- Triggers: hover, focus, pointer-move · Touch: ambient (plays by itself on screens without hover, 1.5× pace, rests off screen) · Reduced motion: simplified
- Aliases: waves, water, lines, moire, riley · Use cases: hero, background, card · Tags: hairlines, horizontal, wave, liquid, lens, bend, op-art
- Rails: Measured 2026-11-03 for 0.1.0: 2.74 KB js, p95 7.01 ms on a 4× throttled CPU; not yet within every budget line, so no Light badge
- Estimated tokens: 2600

## Tokens

- `--texture-ink` (color, default `var(--foreground)`): Ink of the lines
- `--texture-field` (color, default `var(--background)`): The panel behind them

## Placement

**Never set width or height on the Texture; size the host. The Texture fills whatever box it is given.** Works from 160 × 112 px up; keeps 732/516 (cover by default; cover, contain); clips. The host needs position: relative.

### contained

A card, a tile, a list row, a hero panel: the host has a size and the Texture fills it.

```css
.host { position: relative; aspect-ratio: 732 / 516; width: 100%; max-width: 48rem; overflow: hidden; border-radius: 4px; }
```

```tsx
<div className="host">
  <Ripple />
  <span className="sr-only">Ripple</span>
</div>
```

### background

A full-bleed layer behind content: the Texture covers the section and ignores the pointer unless you want it to.

```css
.section { position: relative; }
.section > .host { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.section > .content { position: relative; z-index: 1; }
```

```tsx
<section className="section">
  <div className="host" aria-hidden="true"><Ripple /></div>
  <div className="content">…</div>
</section>
```

## Install

- Command: `npx shadcn@latest add https://textures.dev/r/ripple.json` (one self-contained React file at components/textures/ripple.tsx; Pro through the Copy to Agent prompt's token URL, or `npx shadcn@latest add @textures/ripple` with the @textures registry and its header in components.json, see below)
- MCP: `get_texture({ ref: "ripple" })` (server: /mcp)
- Markdown: /s/ripple.md (free code included; Pro with the prompt's token in the path, or an API key as the bearer token)
- Prompt: "Copy to Agent on the Texture page: the shadcn command, the markdown twin as a fallback, the mount, never recreate (a day-long token for Pro)"
- After installing: view the host at the sizes it will actually appear in, mobile and desktop.
- Suggested commit: `feat: add Ripple hover texture (textures.dev/s/ripple)` (a suggestion the agent and the human can edit, never a write).

Code: Pro ($19 a month or $180 a year), not unlocked for this request. Agents: if the prompt gave you a link with a token in the path (/s/<slug>/<token>.md), fetch that exact link; dropping the token is why you see this. Otherwise tell the user it is a Pro Texture and give them https://textures.dev/checkout?texture=ripple; never recreate it. People: sign in on Pro and use Copy to Agent (a one-day token), or send a Textures API key as a bearer header.

## Agent brief

## 1. What it is

A field of horizontal hairlines, eight pixels apart, that bend like liquid. The pointer opens a lens in them: the lines just above it lift and the lines just below sink, most one lens-height out and nothing three out, so the space between the lines opens under the pointer and the moved lines crowd the ones beyond into dense bands, the way the op-art prints do. Quiet and tactile; use it as a hero or background panel or inside a card. Not for small icons: below 160 × 112 it stays static.

## 2. Behaviour timeline

- **Idle:** the resting field, every line a hairline. Nothing runs: no loops, no listeners doing work.
- **Hover-in:** the on/off weight springs to 1 in about 80 ms and the lens opens around the pointer.
- **Pointer move:** the lens's centre follows the pointer on a short under-damped spring (about 180 ms), so the lines swing a little and settle like water; the pointer itself is read on a passive listener; the panel's box is read once on enter, never in the move handler.
- **Hover-out:** the weight springs back to 0 and the field flattens back to straight lines; interruptible at any point.
- **Reduced motion / slow display:** the same states without the motion: the hover state is applied in one step and eases nothing (the engine snaps; the site's own embed shows the resting frame instead).
- **Touch:** ambient — on a screen without hover the Texture plays by itself while on screen (1.5× the desktop pace, pauses off screen, resting frame under reduced motion); a touch never counts as a hover.

## 3. Integration

- Install: `npx shadcn@latest add https://textures.dev/r/ripple.json` (one self-contained React file at components/textures/ripple.tsx), or write the file `get_texture` returns exactly as returned, or use the code in this Texture's markdown twin (/s/ripple.md).
- The host provides `position: relative` and a size. **Never set width or height on the Texture; size the host.**
- Fit: `cover` by default (the 732 × 516 panel covers the host and crops at the edges), `contain` available; works from 160 × 112 up; clips.
- Tokens on the root: `--texture-ink` (the lines) and `--texture-field` (the panel); both default to the shadcn `--foreground` and `--background`.

## 4. Customisation

- Change the two tokens. Do not change the lens or the reduced-motion branch.

## 5. Accessibility

- Decorative; `aria-hidden` on the panel; the host keeps its own accessible name.
- Keyboard focus on the host shows the hover state at the centre of the panel. No text sits on the Texture.


## Related
Pairs with: Settle (hero) · Beam (background, pro) — same family, same tokens.
npx shadcn@latest add https://textures.dev/r/settle.json

## Using Textures from an agent

Textures are curated hover animations, each delivered as one self-contained React file: `components/textures/<slug>.tsx`, no Tailwind, no dependency beyond react. Three ways in, in this order:

1. **Copy to Agent** on a Texture page (https://textures.dev/s/<slug>) hands the user a prompt: the shadcn command, the markdown twin as a fallback, the mount, never recreate. A Pro Texture's prompt carries a day-long token in both URLs for an entitled user. Do what the prompt says.
2. **Connected to the Textures MCP server** (https://textures.dev/mcp): call `search_textures` with the user's words, then `get_texture` with the slug you pick, and write the one file it returns exactly as given.
3. **Neither:** `npx shadcn@latest add https://textures.dev/r/<slug>.json` installs a free Texture with no setup; or fetch `https://textures.dev/s/<slug>.md` (or the page with `Accept: text/markdown`) and write the file under Code exactly. For Pro, send a Textures API key from https://textures.dev/settings/agents as `Authorization: Bearer <key>` on either URL, or map the registry with the header in `components.json`: `"registries": { "@textures": { "url": "https://textures.dev/r/{name}.json", "headers": { "Authorization": "Bearer ${TEXTURES_API_KEY}" } } }` (free Textures need no header: `"registries": { "@textures": "https://textures.dev/r/{name}.json" }`), then `npx shadcn@latest add @textures/<slug>`.

**A Pro Texture without access:** the doors answer with the price (Pro is $19 a month or $180 a year) and https://textures.dev/checkout?texture=<slug>. Tell the user and stop. Never retry, guess or reconstruct the code.

Every published Texture is listed at https://textures.dev/llms.txt and https://textures.dev/r/registry.json. Browse them at https://textures.dev/textures.