Install
That writes one file:compositions/components/aurora-drift.html.
Paste it into your composition
Opencompositions/components/aurora-drift.html and copy what is inside into your own composition.
A component has no size or duration of its own. It takes both from the composition
you paste it into.
Variables
Every one of these has a default, so the piece works untouched. Set the ones you want to change on the element:| Variable | Default | Accepts | What it does |
|---|---|---|---|
accent | green | green, blue, violet | Accent token family used to derive the aurora hues. |
mood | deep | deep, bright | Base luminance and aurora field strength. |
data-variable-values on the element that mounts it. These are the
defaults, so this behaves exactly like the preview above until you change one:
<div
data-composition-id="aurora-drift"
data-composition-src="compositions/components/aurora-drift.html"
data-variable-values='{"accent":"green","mood":"deep"}'
></div>
Source
aurora-drift.html
aurora-drift.html
<!doctype html>
<!--
aurora-drift: HyperFrames video primitive (backgrounds / ambient)
Concept: three oversized, softly blurred accent-derived fields drift over
a deep base beneath a faint vignette. The motion stays slow and restrained,
giving a scene color and depth without competing with foreground content.
Variables:
- accent (green | blue | violet, default green): selects the source token
from which the three related aurora hues are mixed.
- mood (deep | bright, default deep): controls base luminance and field
strength while preserving the same motion.
Envelope: IN = 0, HOLD = the full elastic duration, OUT = 0. The phase proxy
advances through exactly one whole sine cycle during HOLD. A longer mount
stretches only that ambient cycle.
Loop invariant: phase 2 * PI is normalized to phase 0 before any transform
is calculated, so every blob has exactly the same pose at t=0 and t=duration.
Sound: none.
Mount contract: the runtime clones only this template. #root fills the host
box, establishes the container query basis, has no data-width or data-height,
and registers one paused timeline under the hardcoded aurora-drift id.
-->
<html
lang="en"
data-composition-id="aurora-drift"
data-composition-duration="4"
data-composition-variables='[
{ "id": "accent", "type": "enum", "role": "style", "label": "Accent", "description": "Accent token family used to derive the aurora hues.", "default": "green", "options": [{ "value": "green", "label": "Green" }, { "value": "blue", "label": "Blue" }, { "value": "violet", "label": "Violet" }] },
{ "id": "mood", "type": "enum", "role": "style", "label": "Mood", "description": "Base luminance and aurora field strength.", "default": "deep", "options": [{ "value": "deep", "label": "Deep" }, { "value": "bright", "label": "Bright" }] }
]'
>
<head>
<meta charset="UTF-8" />
<title>Aurora Drift</title>
</head>
<body>
<template>
<div id="root" data-composition-id="aurora-drift" data-duration="4" data-fps="30">
<style>
*,
*::before,
*::after {
box-sizing: border-box;
}
#root {
position: absolute;
inset: 0;
overflow: hidden;
container-type: size;
isolation: isolate;
pointer-events: none;
}
.ad-clip,
.ad-base,
.ad-vignette {
position: absolute;
inset: 0;
}
.ad-clip {
overflow: hidden;
}
.ad-base {
background:
radial-gradient(
ellipse at 50% 42%,
color-mix(in srgb, var(--ad-color) 8%, var(--ad-base)) 0%,
var(--ad-base) 68%
),
var(--ad-base);
}
.ad-blob {
--ad-blob-opacity: 1;
position: absolute;
display: block;
border-radius: 50%;
filter: blur(12cqmin) saturate(0.84) opacity(var(--ad-blob-opacity));
mix-blend-mode: screen;
opacity: var(--ad-strength);
will-change: transform;
}
.ad-blob-a {
width: 76cqw;
height: 72cqh;
left: -18cqw;
top: -22cqh;
background: radial-gradient(
ellipse at center,
color-mix(in srgb, var(--ad-color) 88%, white) 0%,
color-mix(in srgb, var(--ad-color) 42%, transparent) 48%,
transparent 76%
);
}
.ad-blob-b {
width: 84cqw;
height: 78cqh;
right: -28cqw;
top: -2cqh;
--ad-blob-opacity: 0.82;
background: radial-gradient(
ellipse at center,
color-mix(in srgb, var(--ad-color) 72%, var(--accent, #38bdf8)) 0%,
color-mix(in srgb, var(--ad-color) 36%, transparent) 52%,
transparent 78%
);
}
.ad-blob-c {
width: 72cqw;
height: 74cqh;
left: 18cqw;
bottom: -34cqh;
--ad-blob-opacity: 0.68;
background: radial-gradient(
ellipse at center,
color-mix(in srgb, var(--ad-color) 72%, var(--accent-2, #a78bfa)) 0%,
color-mix(in srgb, var(--ad-color) 32%, transparent) 50%,
transparent 76%
);
}
.ad-vignette {
background: radial-gradient(
ellipse at center,
transparent 35%,
rgb(0 0 0 / var(--ad-vignette)) 100%
);
}
</style>
<div
id="aurora-drift-clip"
class="ad-clip clip"
data-start="0"
data-duration="4"
data-track-index="0"
>
<div class="ad-base"></div>
<div class="ad-blob ad-blob-a"></div>
<div class="ad-blob ad-blob-b"></div>
<div class="ad-blob ad-blob-c"></div>
<div class="ad-vignette"></div>
</div>
<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
<script>
(function () {
"use strict";
var root = document.getElementById("root");
var vars =
window.__hyperframes && window.__hyperframes.getVariables
? window.__hyperframes.getVariables()
: {};
// Invalid enum overrides return to their declared defaults.
var accentTokens = {
green: "var(--brand, #34d399)",
blue: "var(--accent, #38bdf8)",
violet: "var(--accent-2, #a78bfa)",
};
var moodStyles = {
deep: { base: "#050711", strength: "0.42", vignette: "0.62" },
bright: { base: "#111827", strength: "0.56", vignette: "0.46" },
};
var accent = Object.prototype.hasOwnProperty.call(accentTokens, vars.accent)
? vars.accent
: "green";
var mood = vars.mood === "bright" ? "bright" : "deep";
var moodStyle = moodStyles[mood];
root.style.setProperty("--ad-color", accentTokens[accent]);
root.style.setProperty("--ad-base", moodStyle.base);
root.style.setProperty("--ad-strength", moodStyle.strength);
root.style.setProperty("--ad-vignette", moodStyle.vignette);
var TAU = Math.PI * 2;
var duration = Math.max(0.001, parseFloat(root.dataset.duration || "4"));
var state = { phase: 0 };
var paths = [
{ element: root.querySelector(".ad-blob-a"), offset: 0, x: 4.6, y: 3.2 },
{
element: root.querySelector(".ad-blob-b"),
offset: TAU / 3,
x: 4.1,
y: 3.8,
},
{
element: root.querySelector(".ad-blob-c"),
offset: (TAU * 2) / 3,
x: 3.6,
y: 3,
},
];
function renderPose() {
// The endpoint uses literal phase zero, avoiding the floating
// point residue from Math.sin(2 * PI).
var phase = state.phase === TAU ? 0 : state.phase;
paths.forEach(function (path) {
gsap.set(path.element, {
x: Math.sin(phase + path.offset) * path.x + "cqw",
y: Math.sin(phase + path.offset + Math.PI / 2) * path.y + "cqh",
});
});
}
var tl = gsap.timeline({ paused: true });
// HOLD: uniform phase travel produces smooth sine motion. Exactly
// one whole cycle is completed at the duration boundary.
tl.to(state, { phase: TAU, duration: duration, ease: "none", onUpdate: renderPose }, 0);
renderPose();
tl.seek(0);
window.__timelines = window.__timelines || {};
window.__timelines["aurora-drift"] = tl;
})();
</script>
</div>
</template>
</body>
</html>
motion-primitive background aurora gradient ambient loopable.