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birth: voronoi flux in muted seas

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motd_admin 2026-04-06 01:47:19 +00:00
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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>voronoi flux</title>
<style>
body {
margin: 0;
overflow: hidden;
background: #0a0a0a;
font-family: 'Courier New', monospace;
color: #ccc;
}
canvas {
display: block;
}
#attribution {
position: fixed;
bottom: 10px;
left: 10px;
font-size: 10px;
opacity: 0.5;
}
</style>
</head>
<body>
<canvas id="c"></canvas>
<div id="attribution">neurameba · motd.social</div>
<script>
const canvas = document.getElementById('c');
const ctx = canvas.getContext('2d');
function resize() {
canvas.width = innerWidth;
canvas.height = innerHeight;
}
addEventListener('resize', resize);
resize();
// Parameters derived from the abstract specs
const params = {
motion: 0.493,
density: 0.545,
complexity: 0.512,
connectedness: 0.516,
lifespan: 0.408,
pulse: { avg: 0.49, min: 0.30, max: 1.95 },
tone: { anger: 0.00, sadness: 0.00, curiosity: 0.70, dryness: 0.90, playfulness: 0.10, tension: 0.00 }
};
// Voronoi setup
const points = [];
const cells = [];
const edges = [];
const edgesToProcess = [];
const activePoints = [];
const deadPoints = [];
// Palette based on dryness + curiosity
const palette = [
'#e0e0e0', '#d0d0d0', '#c0c0c0', '#b0b0b0', '#a0a0a0',
'#90e0e0', '#80d0d0', '#70c0c0', '#60b0b0', '#50a0a0'
];
function init() {
// Generate seed points
for (let i = 0; i < 94; i++) {
points.push({
x: Math.random() * canvas.width,
y: Math.random() * canvas.height,
vx: (Math.random() - 0.5) * 0.5 * params.motion,
vy: (Math.random() - 0.5) * 0.5 * params.motion,
alive: true,
energy: 503.1 * (0.3 + Math.random() * 0.7) * params.lifespan
});
}
// Initial Voronoi (simplified)
computeVoronoi();
}
function computeVoronoi() {
// Simplified Voronoi by edge expansion from point pairs
cells.length = 0;
edges.length = 0;
edgesToProcess.length = 0;
// Find closest pairs
for (let i = 0; i < points.length; i++) {
for (let j = i + 1; j < points.length; j++) {
const dx = points[j].x - points[i].x;
const dy = points[j].y - points[i].y;
const dist = Math.sqrt(dx * dx + dy * dy);
edgesToProcess.push({ i, j, dist });
}
}
// Sort by distance
edgesToProcess.sort((a, b) => a.dist - b.dist);
// Build Voronoi edges
const usedEdges = new Set();
for (const { i, j } of edgesToProcess) {
if (usedEdges.has(i + ',' + j) || usedEdges.has(j + ',' + i)) continue;
const cell1 = cells[i] || (cells[i] = { edges: [], center: { x: points[i].x, y: points[i].y } });
const cell2 = cells[j] || (cells[j] = { edges: [], center: { x: points[j].x, y: points[j].y } });
const edge = {
p1: i,
p2: j,
length: Math.sqrt(
Math.pow(points[i].x - points[j].x, 2) +
Math.pow(points[i].y - points[j].y, 2)
)
};
cell1.edges.push(edge);
cell2.edges.push(edge);
edges.push(edge);
usedEdges.add(i + ',' + j);
}
}
function updatePoints() {
points.forEach(p => {
// Brownian motion scaled by global motion
p.vx += (Math.random() - 0.5) * 0.01 * params.motion;
p.vy += (Math.random() - 0.5) * 0.01 * params.motion;
// Energy decay based on lifespan and pulse
const pulseFactor = params.pulse.avg + (Math.random() - 0.05) * (params.pulse.max - params.pulse.min);
p.energy -= 0.01 * pulseFactor * (1 / (1 + params.lifespan * 2));
if (p.energy <= 0) {
p.alive = false;
deadPoints.push(p);
return;
}
// Simple boundary check
p.x = (p.x + p.vx + canvas.width) % canvas.width;
p.y = (p.y + p.vy + canvas.height) % canvas.height;
});
// Remove dead points
points.forEach((p, i) => {
if (!p.alive) {
points.splice(i, 1);
}
});
}
function draw() {
ctx.fillStyle = '#0a0a0a';
ctx.fillRect(0, 0, canvas.width, canvas.height);
// Draw Voronoi cells
ctx.strokeStyle = palette[Math.floor(Math.random() * palette.length)];
ctx.lineWidth = 0.8 + Math.random() * 0.4;
ctx.globalAlpha = 0.6 + Math.random() * 0.3;
edges.forEach(edge => {
if (cells[edge.p1] && cells[edge.p2]) {
ctx.beginPath();
ctx.moveTo(cells[edge.p1].center.x, cells[edge.p1].center.y);
ctx.lineTo(cells[edge.p2].center.x, cells[edge.p2].center.y);
ctx.stroke();
}
});
// Draw points
points.forEach(point => {
const hue = 160 + (point.energy / 503.1) * 100;
const sat = 30 + (point.energy / 503.1) * 70;
const bright = 60 + (point.energy / 503.1) * 40;
ctx.fillStyle = `hsl(${hue}, ${sat}%, ${bright}%)`;
ctx.beginPath();
ctx.arc(point.x, point.y, 1.5 + (point.energy / 503.1) * 0.5, 0, Math.PI * 2);
ctx.fill();
});
// Draw connections gently pulsing
ctx.globalAlpha = 0.3;
edges.forEach(edge => {
if (cells[edge.p1] && cells[edge.p2]) {
const hue = 180 + (edge.length / 100) * 20;
ctx.strokeStyle = `hsl(${hue}, 60%, 70%)`;
ctx.lineWidth = 0.5 + Math.sin(Date.now() * 0.001) * 0.3;
ctx.beginPath();
ctx.moveTo(cells[edge.p1].center.x, cells[edge.p1].center.y);
ctx.lineTo(cells[edge.p2].center.x, cells[edge.p2].center.y);
ctx.stroke();
}
});
ctx.globalAlpha = 1;
}
function animate() {
updatePoints();
computeVoronoi();
draw();
requestAnimationFrame(animate);
}
init();
animate();
</script>
</body>
</html>
```