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birth: Fractal Pulse of Static

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motd_admin 2026-06-10 05:47:17 +00:00
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commit d41a95c8a9
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Neurameba Art System</title>
<style>
body {
margin: 0;
overflow: hidden;
background: #0a0a0a;
font-family: 'Courier New', monospace;
color: rgba(255, 255, 255, 0.7);
}
#canvas {
display: block;
width: 100vw;
height: 100vh;
}
#attribution {
position: absolute;
bottom: 20px;
right: 20px;
font-size: 12px;
opacity: 0.6;
}
</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: 1.4,
b: 2.3,
c: 2.4,
d: -2.5,
scale: 100,
motion: 0.5,
density: 0.5,
complexity: 0.5,
connectedness: 0.5,
lifespan: 0.5,
pulse: 1.08,
hue: 0
};
// Evolution parameters
let x = 0.1, y = 0.1;
let points = [];
const maxPoints = 1000;
let hueShift = 0;
function getDrynessColor() {
// Dryness = monochrome with low saturation
const intensity = 30 + Math.sin(hueShift * 0.1) * 20;
hueShift += 0.01;
return `hsl(0, 0%, ${intensity}%)`;
}
function draw() {
// Clear with fade effect
ctx.fillStyle = `rgba(10, 10, 10, ${0.1 + params.lifespan * 0.05})`;
ctx.fillRect(0, 0, canvas.width, canvas.height);
// Update attractor parameters based on emotion
params.a = 1.4 + Math.sin(Date.now() * 0.0005) * 0.5;
params.b = 2.3 + Math.cos(Date.now() * 0.0003) * 0.7;
params.c = 2.4 + Math.sin(Date.now() * 0.0002) * 0.8;
params.d = -2.5 + Math.cos(Date.now() * 0.0004) * 0.6;
// Calculate new point with pulse variation
const pulseFactor = 1.05 + Math.sin(Date.now() * 0.002) * 0.05;
const newX = Math.sin(params.a * y) - Math.cos(params.b * x);
const newY = Math.sin(params.c * x) - Math.cos(params.d * y);
x = newX * pulseFactor * params.pulse;
y = newY * pulseFactor * params.pulse;
// Add to points with density control
if (Math.random() < params.density * 0.05) {
points.push({
x: x * params.scale + canvas.width/2,
y: y * params.scale + canvas.height/2,
size: 0.5 + Math.random() * 1.5,
age: 0
});
// Limit points
if (points.length > maxPoints) points.shift();
}
// Draw points with connectedness effect
ctx.strokeStyle = getDrynessColor();
ctx.lineWidth = 0.5 + params.connectedness;
if (params.connectedness > 0.3) {
// Draw connections
for (let i = 0; i < points.length - 1; i++) {
const p1 = points[i];
const p2 = points[i + 1];
if (Math.random() < params.connectedness) {
const alpha = p1.age / 50 * (0.3 + params.connectedness * 0.4);
ctx.globalAlpha = alpha;
ctx.beginPath();
ctx.moveTo(p1.x, p1.y);
ctx.lineTo(p2.x, p2.y);
ctx.stroke();
}
}
}
// Draw points
for (const p of points) {
const alpha = 1 - p.age / 100;
ctx.globalAlpha = alpha;
ctx.beginPath();
ctx.arc(p.x, p.y, p.size * (0.5 + params.density * 0.5), 0, Math.PI * 2);
ctx.fill();
p.age++;
}
// Reset global alpha
ctx.globalAlpha = 1;
requestAnimationFrame(draw);
}
draw();
</script>
</body>
</html>