Ascendant Light
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<!DOCTYPE html>
<html>
<head>
<title>3. Ascendant Light</title>
<style>
body {
margin: 0;
height: 100vh;
background-color: #1a1a2e;
overflow: hidden;
position: relative;
}
.light-source {
position: absolute;
top: -20%;
left: 50%;
width: 300%;
height: 150%;
transform: translateX(-50%);
background: linear-gradient(
45deg,
rgba(255, 238, 204, 0) 40%,
rgba(255, 238, 204, 0.25) 48%,
rgba(255, 238, 204, 0.25) 52%,
rgba(255, 238, 204, 0) 60%
);
animation: pan-light 10s infinite linear;
/* To create a soft origin point for the rays */
-webkit-mask-image: radial-gradient(ellipse at 50% -20%, black 20%, transparent 70%);
mask-image: radial-gradient(ellipse at 50% -20%, black 20%, transparent 70%);
}
.light-source.two {
transform: translateX(-50%) rotate(-20deg);
animation-duration: 8s; /* Vary speed for realism */
}
@keyframes pan-light {
from { transform: translateX(-50%) rotate(-40deg); }
to { transform: translateX(-50%) rotate(40deg); }
}
.mote-container {
position: absolute;
top: 0; left: 0;
width: 100%;
height: 100%;
}
.mote {
position: absolute;
width: 4px;
height: 4px;
background: #fff;
border-radius: 50%;
opacity: 0.5;
box-shadow: 0 0 10px #ffeecc;
animation: float 10s infinite linear;
}
@keyframes float {
0% {
transform: translateY(110vh) translateX(0) rotate(0deg);
opacity: 0;
}
10% { opacity: 0.7; }
90% { opacity: 0.7; }
100% {
transform: translateY(-10vh) translateX(100px) rotate(360deg);
opacity: 0;
}
}
@media (prefers-reduced-motion: reduce) {
.light-source, .mote { animation: none; }
}
</style>
</head>
<body>
<div class="light-source"></div>
<div class="light-source two"></div>
<div class="mote-container" id="moteContainer"></div>
<script>
const container = document.getElementById('moteContainer');
const numMotes = 50;
for (let i = 0; i < numMotes; i++) {
const mote = document.createElement('div');
mote.className = 'mote';
const size = Math.random() * 3 + 1;
mote.style.width = `${size}px`;
mote.style.height = `${size}px`;
mote.style.left = `${Math.random() * 100}vw`;
mote.style.animationDelay = `${Math.random() * -10}s`;
mote.style.animationDuration = `${Math.random() * 5 + 8}s`;
container.appendChild(mote);
}
</script>
<script>
/**
* Animation control function, called on every frame.
* @param {object} frame - The animation frame object (contains time, progress, etc.).
*/
window.nextFrame = function(frame) {
// AI-suggested functions to consider for this animation:
// - document.querySelectorAll\n // - element.style.transform\n // - element.style.opacity\n // - Math.sin\n // - Math.cos\n // - performance.now\n // - Math.random\n // - element.style.animationDuration\n // - element.style.animationPlayState\n // - element.animate\n // - container.appendChild\n // - element.remove
// Add your animation logic here.
// console.log('Current frame progress:', frame.progress);
// Bridge to existing animation if any.
if (typeof animate === 'function') {
animate(frame.time);
}
}
// If there's an existing animation loop, we can modify it to be controlled by nextFrame.
// This is a placeholder for how you might adapt your code.
if (typeof requestAnimationFrame === 'function' && !window.__HTV__?.exporting) {
let tick = 0;
function animate(time) {
// Your animation logic driven by RAF.
tick++;
// draw(tick);
requestAnimationFrame(animate);
}
// requestAnimationFrame(animate);
}
</script>
</body>
</html>About this animation
Rising beams of ethereal light.
Under the hood
CSS Light Beams and Floating Motes
Two oversized
div beams use a CSS linear-gradient softened by a mask-image: radial-gradient(...) and sweep via @keyframes pan-light, rotating from -40deg to 40deg. JavaScript adds 50 small mote div elements that rise the screen via @keyframes float, with randomised size, position, delay and duration.Related
