birth: strange entropy pulse
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index.html
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191
index.html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>strange entropy</title>
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<style>
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body {
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margin: 0;
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overflow: hidden;
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background: #0a0a0a;
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display: flex;
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justify-content: center;
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align-items: center;
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height: 100vh;
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}
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canvas {
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display: block;
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}
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.info {
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position: absolute;
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bottom: 20px;
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color: #555;
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font-family: 'Courier New', monospace;
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font-size: 11px;
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pointer-events: none;
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}
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</style>
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</head>
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<body>
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<canvas id="canvas"></canvas>
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<div class="info">neurameba · motd.social</div>
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<script>
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const canvas = document.getElementById('canvas');
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const ctx = canvas.getContext('2d');
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function resizeCanvas() {
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canvas.width = window.innerWidth;
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canvas.height = window.innerHeight;
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}
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window.addEventListener('resize', resizeCanvas);
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resizeCanvas();
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// Parameters derived from abstract specs
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const params = {
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motion: 0.421,
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density: 0.577,
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complexity: 0.380,
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connectedness: 0.556,
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lifespan: 0.636,
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pulseAvg: 0.34,
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pulseMin: 0.30,
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pulseMax: 1.30,
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dryness: 0.90
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};
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// Strange attractor parameters (Lorenz-like)
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let attractor = {
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a: 10,
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b: 28,
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c: 8/3,
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x: 0.1,
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y: 0.1,
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z: 0.1,
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history: [],
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maxHistory: 200,
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trailLength: Math.floor(params.lifespan * 100) + 50,
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pointSize: (params.density * 0.8) + 0.5,
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color: params.dryness > 0.7 ? '#ddd' : '#0ff'
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};
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// Initialize network connections
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const nodes = [];
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const branches = Math.floor(params.connectedness * 100) + 5;
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const nodeCount = Math.floor(params.density * 50) + 10;
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for (let i = 0; i < nodeCount; i++) {
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nodes.push({
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x: Math.random() * canvas.width,
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y: Math.random() * canvas.height,
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vx: 0,
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vy: 0,
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size: attractor.pointSize * (0.5 + Math.random() * 0.5),
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connections: [],
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maxConnections: Math.floor(params.connectedness * 5) + 1,
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age: 0
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});
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}
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// Create connections (branches)
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for (let i = 0; i < branches; i++) {
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const from = Math.floor(Math.random() * nodeCount);
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const to = Math.floor(Math.random() * nodeCount);
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if (from !== to && nodes[from].connections.length < nodes[from].maxConnections) {
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nodes[from].connections.push(nodes[to]);
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}
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}
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// Animation state
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let time = 0;
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let lastPulse = 0;
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function animate() {
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// Calculate pulse effect from parameters
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const pulsePhase = params.pulseAvg + Math.sin(time * 0.01) * 0.2;
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const pulse = params.pulseMin + (params.pulseMax - params.pulseMin) * pulsePhase;
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attractor.pointSize = (params.density * 0.8 + 0.5) * (0.8 + pulse * 0.2);
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// Clear with semi-transparent to create trails
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ctx.fillStyle = 'rgba(0, 0, 0, 0.05)';
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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// Update attractor
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for (let i = 0; i < 5; i++) {
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const dt = 0.01 * (params.motion * 2 + 0.1);
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attractor.x += dt * (attractor.a * (attractor.y - attractor.x));
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attractor.y += dt * (attractor.x * (attractor.b - attractor.z) - attractor.y);
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attractor.z += dt * (attractor.x * attractor.y - attractor.c * attractor.z);
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// Store position with slight variation
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attractor.history.push({
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x: attractor.x * 20 + canvas.width/2,
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y: attractor.y * 20 + canvas.height/2,
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size: attractor.pointSize * (1 + attractor.z * 0.05)
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});
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if (attractor.history.length > attractor.maxHistory) {
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attractor.history.shift();
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}
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}
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// Draw attractor trail
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ctx.lineWidth = 1;
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ctx.strokeStyle = 'rgba(255, 255, 255, 0.1)';
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if (attractor.history.length > 1) {
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ctx.beginPath();
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ctx.moveTo(attractor.history[0].x, attractor.history[0].y);
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for (let i = 1; i < attractor.history.length; i++) {
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ctx.lineTo(attractor.history[i].x, attractor.history[i].y);
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}
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ctx.stroke();
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}
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// Update and draw nodes
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nodes.forEach(node => {
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// Simple movement
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node.vx += (Math.random() - 0.5) * 0.2 * params.motion;
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node.vy += (Math.random() - 0.5) * 0.2 * params.motion;
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node.vx *= 0.9;
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node.vy *= 0.9;
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node.x += node.vx;
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node.y += node.vy;
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node.x = (node.x + canvas.width) % canvas.width;
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node.y = (node.y + canvas.height) % canvas.height;
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node.age++;
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// Draw node
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ctx.beginPath();
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ctx.arc(node.x, node.y, node.size, 0, Math.PI * 2);
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ctx.fillStyle = params.dryness > 0.7 ? '#aaa' : '#0ff';
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ctx.fill();
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// Draw connections
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node.connections.forEach(conn => {
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ctx.beginPath();
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ctx.moveTo(node.x, node.y);
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ctx.lineTo(conn.x, conn.y);
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ctx.strokeStyle = `rgba(170, 255, 255, ${Math.min(0.3, node.age/100)})`;
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ctx.lineWidth = params.connectedness * 0.8 + 0.3;
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ctx.stroke();
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});
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});
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// Occasionally reset some nodes
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if (Math.random() < 0.01 * params.motion) {
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const idx = Math.floor(Math.random() * nodeCount);
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nodes[idx].x = Math.random() * canvas.width;
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nodes[idx].y = Math.random() * canvas.height;
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}
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time++;
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requestAnimationFrame(animate);
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}
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animate();
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</script>
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</body>
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</html>
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