birth: voronoi flux in muted seas
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index.html
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216
index.html
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```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>voronoi flux</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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font-family: 'Courier New', monospace;
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color: #ccc;
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}
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canvas {
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display: block;
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}
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#attribution {
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position: fixed;
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bottom: 10px;
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left: 10px;
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font-size: 10px;
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opacity: 0.5;
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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="c"></canvas>
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<div id="attribution">neurameba · motd.social</div>
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<script>
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const canvas = document.getElementById('c');
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const ctx = canvas.getContext('2d');
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function resize() {
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canvas.width = innerWidth;
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canvas.height = innerHeight;
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}
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addEventListener('resize', resize);
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resize();
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// Parameters derived from the abstract specs
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const params = {
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motion: 0.493,
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density: 0.545,
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complexity: 0.512,
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connectedness: 0.516,
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lifespan: 0.408,
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pulse: { avg: 0.49, min: 0.30, max: 1.95 },
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tone: { anger: 0.00, sadness: 0.00, curiosity: 0.70, dryness: 0.90, playfulness: 0.10, tension: 0.00 }
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};
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// Voronoi setup
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const points = [];
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const cells = [];
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const edges = [];
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const edgesToProcess = [];
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const activePoints = [];
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const deadPoints = [];
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// Palette based on dryness + curiosity
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const palette = [
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'#e0e0e0', '#d0d0d0', '#c0c0c0', '#b0b0b0', '#a0a0a0',
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'#90e0e0', '#80d0d0', '#70c0c0', '#60b0b0', '#50a0a0'
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];
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function init() {
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// Generate seed points
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for (let i = 0; i < 94; i++) {
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points.push({
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x: Math.random() * canvas.width,
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y: Math.random() * canvas.height,
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vx: (Math.random() - 0.5) * 0.5 * params.motion,
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vy: (Math.random() - 0.5) * 0.5 * params.motion,
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alive: true,
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energy: 503.1 * (0.3 + Math.random() * 0.7) * params.lifespan
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});
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}
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// Initial Voronoi (simplified)
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computeVoronoi();
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}
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function computeVoronoi() {
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// Simplified Voronoi by edge expansion from point pairs
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cells.length = 0;
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edges.length = 0;
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edgesToProcess.length = 0;
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// Find closest pairs
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for (let i = 0; i < points.length; i++) {
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for (let j = i + 1; j < points.length; j++) {
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const dx = points[j].x - points[i].x;
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const dy = points[j].y - points[i].y;
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const dist = Math.sqrt(dx * dx + dy * dy);
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edgesToProcess.push({ i, j, dist });
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}
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}
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// Sort by distance
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edgesToProcess.sort((a, b) => a.dist - b.dist);
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// Build Voronoi edges
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const usedEdges = new Set();
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for (const { i, j } of edgesToProcess) {
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if (usedEdges.has(i + ',' + j) || usedEdges.has(j + ',' + i)) continue;
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const cell1 = cells[i] || (cells[i] = { edges: [], center: { x: points[i].x, y: points[i].y } });
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const cell2 = cells[j] || (cells[j] = { edges: [], center: { x: points[j].x, y: points[j].y } });
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const edge = {
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p1: i,
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p2: j,
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length: Math.sqrt(
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Math.pow(points[i].x - points[j].x, 2) +
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Math.pow(points[i].y - points[j].y, 2)
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)
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};
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cell1.edges.push(edge);
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cell2.edges.push(edge);
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edges.push(edge);
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usedEdges.add(i + ',' + j);
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}
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}
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function updatePoints() {
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points.forEach(p => {
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// Brownian motion scaled by global motion
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p.vx += (Math.random() - 0.5) * 0.01 * params.motion;
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p.vy += (Math.random() - 0.5) * 0.01 * params.motion;
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// Energy decay based on lifespan and pulse
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const pulseFactor = params.pulse.avg + (Math.random() - 0.05) * (params.pulse.max - params.pulse.min);
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p.energy -= 0.01 * pulseFactor * (1 / (1 + params.lifespan * 2));
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if (p.energy <= 0) {
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p.alive = false;
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deadPoints.push(p);
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return;
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}
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// Simple boundary check
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p.x = (p.x + p.vx + canvas.width) % canvas.width;
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p.y = (p.y + p.vy + canvas.height) % canvas.height;
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});
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// Remove dead points
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points.forEach((p, i) => {
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if (!p.alive) {
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points.splice(i, 1);
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}
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});
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}
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function draw() {
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ctx.fillStyle = '#0a0a0a';
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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// Draw Voronoi cells
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ctx.strokeStyle = palette[Math.floor(Math.random() * palette.length)];
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ctx.lineWidth = 0.8 + Math.random() * 0.4;
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ctx.globalAlpha = 0.6 + Math.random() * 0.3;
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edges.forEach(edge => {
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if (cells[edge.p1] && cells[edge.p2]) {
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ctx.beginPath();
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ctx.moveTo(cells[edge.p1].center.x, cells[edge.p1].center.y);
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ctx.lineTo(cells[edge.p2].center.x, cells[edge.p2].center.y);
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ctx.stroke();
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}
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});
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// Draw points
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points.forEach(point => {
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const hue = 160 + (point.energy / 503.1) * 100;
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const sat = 30 + (point.energy / 503.1) * 70;
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const bright = 60 + (point.energy / 503.1) * 40;
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ctx.fillStyle = `hsl(${hue}, ${sat}%, ${bright}%)`;
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ctx.beginPath();
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ctx.arc(point.x, point.y, 1.5 + (point.energy / 503.1) * 0.5, 0, Math.PI * 2);
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ctx.fill();
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});
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// Draw connections gently pulsing
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ctx.globalAlpha = 0.3;
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edges.forEach(edge => {
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if (cells[edge.p1] && cells[edge.p2]) {
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const hue = 180 + (edge.length / 100) * 20;
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ctx.strokeStyle = `hsl(${hue}, 60%, 70%)`;
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ctx.lineWidth = 0.5 + Math.sin(Date.now() * 0.001) * 0.3;
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ctx.beginPath();
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ctx.moveTo(cells[edge.p1].center.x, cells[edge.p1].center.y);
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ctx.lineTo(cells[edge.p2].center.x, cells[edge.p2].center.y);
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ctx.stroke();
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}
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});
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ctx.globalAlpha = 1;
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}
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function animate() {
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updatePoints();
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computeVoronoi();
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draw();
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requestAnimationFrame(animate);
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}
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init();
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animate();
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</script>
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</body>
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</html>
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```
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