Iridescence `<mv-iridescence>`

So funktioniert es

Aufrecht stehender WebGL-Seifenfilm: Die Schwerkraft zieht ihn oben dünn und unten dick, sodass sich seine Interferenzfarben in Bändern schichten, die langsame Wirbel einrollen und marmorieren, und der dickste Film sammelt sich zu einer Perle in der Akzentfarbe. Zwei Streifenlichter spiegeln sich im Film; der Zeiger verschiebt sie und ändert den Blickwinkel, wodurch die Farben um ihn herum wandern. Der Film folgt dem Theme: Auf einer dunklen Seite leuchtet er im reflektierten Licht, auf einer hellen zeigt er im Gegenlicht seine durchscheinenden Pastelltöne. Er pausiert außerhalb des Bildschirms, teilt das WebGL-Kontextbudget der Seite und behält bei reduzierter Bewegung ein Standbild.

Kategorie	Hintergründe
Typ	WebGL-Element (`<mv-iridescence>`)
Status	stabil
Installiert auch	shader
Keywords	safe-rewrite, webgl, shader, iridescent, holographic, soap-film, pearl, hero

When to use

A beauty, fashion, crypto or creative brand wants a holographic, soap-film sheen as a hero backdrop
The backdrop should answer the pointer: reflections slide and colors shift where the visitor moves
The same iridescent hero must work in light (pastel, backlit) and dark (glowing) themes without extra tuning

Avoid when

The holographic look should apply to cards and buttons, not the page background → use Surface instead
A reflective liquid-metal surface is the intended look → use Liquid Chrome instead
A still section background is enough and no WebGL should run → use Backdrop instead

Installation

node scripts/add.mjs iridescence --out ./src/marvelous

KI-Agent mit dem MCP-Server von Marvelous UI: install_components({ slugs: ["iridescence"], target_dir: "<absolute path>/src/marvelous", framework: "react" }).

Kopierte Dateien (inklusive Abhängigkeiten): tokens/tokens.css, core/base.css, core/canvas.js, core/dom.js, core/element.js, core/i18n.js, core/motion.js, core/observe.js, core/webgl.js, components/shader/shader.js, components/shader/shader.css, components/iridescence/iridescence.js, components/iridescence/iridescence.css.

Verwendung

Referenz-Markup zum Starten und Anpassen mit Attributen, data-* und CSS-Variablen:

<mv-iridescence data-fill></mv-iridescence>
<div style="position:relative;display:grid;place-items:center;height:100%;min-height:320px;padding:2rem 1rem;box-sizing:border-box;text-align:center;pointer-events:none">
  <div>
    <p style="margin:0;font:700 clamp(1.6rem,4vw,2.6rem)/1.1 var(--mv-font-sans);letter-spacing:-.03em;color:var(--mv-fg);text-shadow:0 0 28px var(--mv-bg),0 0 10px var(--mv-bg)">Thin as light</p>
    <p style="margin:.6rem auto 0;max-width:26rem;color:var(--mv-fg);text-shadow:0 0 16px var(--mv-bg),0 0 6px var(--mv-bg)">A soap film drains into bands of color. Move the pointer to tilt the light.</p>
  </div>
</div>

API

Attributes

Name	Typ	Default	Description
`color`	CSS color	`var(--mv-accent)`	Pearl into which the thickest film settles; only its hue counts (tokens accepted, read again on theme change).
`scale`	number	`1`	Size of the swirls.
`amplitude`	number	`1`	Strength of the eddies that stir the bands (0 = flat horizontal bands).
`saturation`	number	`1`	Vividness of the interference colors (0 = a neutral sheen, max 3).
`depth`	number	`0.5`	Tonal depth: 0 = the whole film shows its colors, 1 = colors mostly where the strip lights fall.
`glint`	number	`1`	Strength of the strip-light reflections and their glare (0 = none, max 3).
`speed`	number	`1`	Time multiplier.
`paused`	boolean		Freezes the animation on the current frame.
`interactive`	boolean		Follows the pointer only over the element (otherwise across the whole window).
`dpr`	number	`1.5`	Max pixel density (capped at 2).
`data-fill`	boolean		Fills the positioned parent (absolute, inset 0).

Events

Name	Description
`mv-error`	The shader failed to compile on this GPU. detail: { message }. The element gets data-error and shows its fallback.

Content structure

Name	Description
`children`	Content placed inside the element sits above the film.

Accessibility

Decorative: the canvas is aria-hidden and never takes pointer events, and content placed inside stays in the normal reading order. The loop stops off screen and in hidden tabs; reduced motion (OS or <html data-motion="reduce">) and paused keep a still, representative frame. Without WebGL2 a still band of soap-film colors in the theme tokens is shown; forced colors and print hide the canvas. The bands are vivid and change brightness, so text placed over them needs a halo or a backing panel to stay readable.