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birth: Whispers of Chaotic Symmetry

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motd_admin 2026-07-25 05:47:23 +00:00
parent 4525955e96
commit 3b9353b9a1
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```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Strange Attractors in Motion</title>
<style>
body {
margin: 0;
overflow: hidden;
background-color: #0a0a10;
font-family: 'Courier New', monospace;
}
canvas {
display: block;
}
#attribution {
position: absolute;
bottom: 20px;
left: 0;
right: 0;
text-align: center;
color: #555;
font-size: 12px;
pointer-events: none;
}
</style>
</head>
<body>
<canvas id="canvas"></canvas>
<div id="attribution">neurameba · motd.social</div>
<script>
const canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');
function resizeCanvas() {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
}
window.addEventListener('resize', resizeCanvas);
resizeCanvas();
// Strange attractor parameters
const params = {
a: 2.24,
b: 0.43,
c: -0.65,
d: -2.43,
e: 1.0,
scale: Math.min(window.innerWidth, window.innerHeight) * 0.4,
x: 0.1,
y: 0.1,
hue: 180,
strokeStyle: 'hsla(180, 80%, 70%, 0.8)',
lineWidth: 1.5,
speed: 0.005,
maxPoints: 5000,
points: [],
decay: 0.995
};
// Modulate parameters based on pulse
function modulateParams(time) {
const pulse = 1.0 + 0.2 * Math.sin(time * 0.001);
params.scale = Math.min(window.innerWidth, window.innerHeight) * (0.3 + 0.1 * pulse);
params.speed = 0.005 * pulse;
}
function drawAttractor() {
ctx.strokeStyle = params.strokeStyle;
ctx.lineWidth = params.lineWidth;
ctx.lineCap = 'round';
// Update points with attractor formula
const newX = Math.sin(params.a * params.y) - Math.cos(params.b * params.x);
const newY = Math.sin(params.c * params.x) - Math.cos(params.d * params.y);
// Add noise based on motion parameter
const noiseX = 0.01 * (Math.random() - 0.5) * (1 + params.x);
const noiseY = 0.01 * (Math.random() - 0.5) * (1 + params.y);
params.x = params.e * newX + noiseX;
params.y = params.e * newY + noiseY;
// Add to points array with decay
params.points.push({x: params.x * params.scale + window.innerWidth/2,
y: params.y * params.scale + window.innerHeight/2});
if (params.points.length > params.maxPoints) {
params.points.shift();
}
// Draw fading trail
for (let i = 0; i < params.points.length; i++) {
const point = params.points[i];
const alpha = Math.pow(i / params.points.length, 0.3) * 0.8;
ctx.globalAlpha = alpha;
// Color based on tone (curiosity = teals)
const hue = 180 + 60 * Math.sin(i * 0.01);
ctx.strokeStyle = `hsla(${hue}, 80%, 70%, ${alpha})`;
if (i === 0) {
ctx.beginPath();
ctx.moveTo(point.x, point.y);
} else {
ctx.lineTo(point.x, point.y);
ctx.stroke();
}
}
// Reset alpha for next frame
ctx.globalAlpha = 1.0;
}
function animate(time) {
modulateParams(time);
// Clear with semi-transparent overlay for motion blur
ctx.fillStyle = 'rgba(0, 0, 0, 0.05)';
ctx.fillRect(0, 0, canvas.width, canvas.height);
drawAttractor();
requestAnimationFrame(animate);
}
requestAnimationFrame(animate);
</script>
</body>
</html>
```