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June 6, 2025 09:58
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Bubble Universe 1
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<!DOCTYPE html> | |
<html lang="en"> | |
<head> | |
<meta charset="UTF-8"> | |
<title>Bubble Universe - Glow Upgrade</title> | |
<style> | |
body { | |
margin: 0; | |
overflow: hidden; | |
background: black; | |
} | |
canvas { | |
display: block; | |
} | |
</style> | |
</head> | |
<body> | |
<canvas id="bubbleUniverse"></canvas> | |
<script> | |
(function() { | |
const canvas = document.getElementById('bubbleUniverse'); | |
const ctx = canvas.getContext('2d'); | |
let t = 0.0; | |
const n = 255; | |
let s = 1; | |
let dimen = 1; | |
let px_size = 2; // increased for 'bigger' dots | |
const PI = Math.PI; | |
const dt = PI / 400; | |
const r = PI * 2 / 235; | |
let zoom = 1; | |
let zoomDirection = 1; | |
function resizeCanvas() { | |
canvas.width = window.innerWidth; | |
canvas.height = window.innerHeight; | |
dimen = Math.min(window.innerWidth, window.innerHeight); | |
s = 2 * dimen / 9; | |
} | |
function draw() { | |
ctx.fillStyle = 'rgba(0, 0, 0, 0.2)'; // semi-transparent background for trails | |
ctx.fillRect(0, 0, canvas.width, canvas.height); | |
ctx.save(); | |
ctx.translate(canvas.width / 2, canvas.height / 2); | |
ctx.scale(zoom, zoom); | |
ctx.globalCompositeOperation = 'lighter'; // additive blending for glow | |
let x = 0; | |
let v = 0; | |
let u = 0; | |
for (let i = 0; i < n; i++) { | |
for (let j = 0; j < n; j++) { | |
u = Math.sin(i + v) + Math.sin(r * i + x); | |
v = Math.cos(i + v) + Math.cos(r * i + x); | |
x = u + t; | |
const hue = (i + j + t * 50) % 360; // shifting hue over time | |
ctx.fillStyle = `hsla(${hue}, 100%, 50%, 0.5)`; // semi-transparent | |
ctx.fillRect(s * u, s * v, px_size, px_size); | |
} | |
} | |
ctx.restore(); | |
// Update zoom (oscillates between 0.9 and 1.1 scale) | |
zoom += zoomDirection * 0.001; | |
if (zoom > 1.1 || zoom < 0.9) zoomDirection *= -1; | |
t += dt; | |
requestAnimationFrame(draw); | |
} | |
window.addEventListener('resize', resizeCanvas); | |
resizeCanvas(); | |
requestAnimationFrame(draw); | |
})(); | |
</script> | |
</body> | |
</html> |
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