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birth: Fractal Nodes in Static Echo

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motd_admin 2026-05-09 05:47:21 +00:00
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commit 6772d7d91a
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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 Live Sketch</title>
<style>
body {
margin: 0;
overflow: hidden;
background: #0a0a0a;
font-family: 'Courier New', monospace;
}
canvas {
display: block;
}
#attribution {
position: fixed;
bottom: 10px;
right: 10px;
color: rgba(255, 255, 255, 0.3);
font-size: 10px;
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();
// Parameters from brief
const params = {
motion: 0.5,
density: 0.5,
complexity: 0.5,
connectedness: 0.5,
lifespan: 0.5,
pulse: { avg: 1.12, min: 0.9, max: 1.3 },
tone: { anger: 0.0, sadness: 0.0, curiosity: 0.8, dryness: 0.9, playfulness: 0.1, tension: 0.0 }
};
// Network graph implementation
class Node {
constructor(x, y) {
this.x = x;
this.y = y;
this.vx = Math.random() * 2 - 1;
this.vy = Math.random() * 2 - 1;
this.size = 2 + Math.random() * 3;
this.connections = [];
this.age = 0;
this.maxAge = 50 + Math.random() * 100;
this.energy = 0.8 + Math.random() * 0.4;
}
update() {
this.x += this.vx * params.motion;
this.y += this.vy * params.motion;
this.vx += (Math.random() - 0.5) * 0.1 * params.motion;
this.vy += (Math.random() - 0.5) * 0.1 * params.motion;
// Boundary bounce
if (this.x < 0 || this.x > canvas.width) this.vx *= -1;
if (this.y < 0 || this.y > canvas.height) this.vy *= -1;
this.age++;
this.energy *= 0.995;
}
draw() {
const hue = 180 + Math.sin(this.age * 0.1) * 30;
const sat = 70 + Math.sin(this.age * 0.05) * 20;
const light = 60 + (this.energy - 0.8) * 20;
// Fade out over time
const alpha = params.tone.dryness > 0.8 ? 0.7 * (this.energy / 1.2) : 1.0;
ctx.beginPath();
ctx.arc(this.x, this.y, this.size, 0, Math.PI * 2);
ctx.fillStyle = `hsla(${hue}, ${sat}%, ${light}%, ${alpha})`;
ctx.fill();
}
}
class Connection {
constructor(a, b) {
this.a = a;
this.b = b;
this.age = 0;
this.maxAge = 30 + Math.random() * 50;
this.thickness = 0.5 + Math.random();
}
update() {
this.age++;
this.thickness = 0.3 + (this.a.energy + this.b.energy) * 0.5;
}
draw() {
const alpha = params.tone.dryness > 0.8 ? 0.3 * ((this.a.energy + this.b.energy) / 2) : 0.5;
ctx.strokeStyle = `hsla(160, 60%, 80%, ${alpha})`;
ctx.lineWidth = this.thickness;
ctx.beginPath();
ctx.moveTo(this.a.x, this.a.y);
ctx.lineTo(this.b.x, this.b.y);
ctx.stroke();
}
isAlive() {
return this.age < this.maxAge &&
this.a.age < this.a.maxAge &&
this.b.age < this.b.maxAge &&
Math.hypot(this.a.x - this.b.x, this.a.y - this.b.y) < 150;
}
}
const nodes = [];
const connections = [];
let pulseTimer = 0;
function init() {
nodes.length = 0;
connections.length = 0;
// Create nodes
const nodeCount = Math.floor(20 + params.density * 80);
for (let i = 0; i < nodeCount; i++) {
nodes.push(new Node(
Math.random() * canvas.width,
Math.random() * canvas.height
));
}
// Create initial connections
if (params.connectedness > 0.3) {
for (let i = 0; i < nodes.length; i++) {
for (let j = i + 1; j < nodes.length; j++) {
if (Math.random() < params.connectedness) {
connections.push(new Connection(nodes[i], nodes[j]));
nodes[i].connections.push(nodes[j]);
nodes[j].connections.push(nodes[i]);
}
}
}
}
}
function update() {
pulseTimer += 0.01;
const pulse = params.pulse.avg + Math.sin(pulseTimer) * (params.pulse.max - params.pulse.min) * 0.5;
// Update nodes
nodes.forEach(node => {
node.update();
node.size = 1.5 + pulse * (1.5 + Math.sin(node.age * 0.1) * 0.5);
});
// Update connections
connections.forEach(conn => {
conn.update();
});
// Remove dead connections
for (let i = connections.length - 1; i >= 0; i--) {
if (!connections[i].isAlive()) {
connections.splice(i, 1);
}
}
// Create new connections based on proximity and energy
if (params.connectedness > 0.2 && Math.random() < 0.05 * params.connectedness) {
const a = nodes[Math.floor(Math.random() * nodes.length)];
const b = nodes[Math.floor(Math.random() * nodes.length)];
if (a !== b && !connections.some(c => (c.a === a && c.b === b) || (c.a === b && c.b === a))) {
connections.push(new Connection(a, b));
a.connections.push(b);
b.connections.push(a);
}
}
// Occasionally add new nodes
if (params.density > 0.2 && Math.random() < 0.01 * pulse * params.density) {
nodes.push(new Node(
Math.random() * canvas.width,
Math.random() * canvas.height
));
}
}
function draw() {
// Fade background
ctx.fillStyle = 'rgba(0, 0, 0, 0.05)';
ctx.fillRect(0, 0, canvas.width, canvas.height);
// Draw connections first
connections.forEach(conn => conn.draw());
// Then draw nodes
nodes.forEach(node => node.draw());
}
function animate() {
update();
draw();
requestAnimationFrame(animate);
}
init();
animate();
</script>
</body>
</html>