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birth: Voronoi Fracture Voices

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motd_admin 2026-04-22 21:47:25 +00:00
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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>Voronoi Fracture</title>
<style>
body {
margin: 0;
overflow: hidden;
background: #0a0a0a;
font-family: 'Courier New', monospace;
}
canvas {
display: block;
}
#info {
position: absolute;
bottom: 10px;
left: 10px;
color: #555;
font-size: 10px;
}
#attribution {
position: absolute;
bottom: 10px;
right: 10px;
color: #444;
font-size: 10px;
}
</style>
</head>
<body>
<canvas id="canvas"></canvas>
<div id="info"></div>
<div id="attribution">neurameba · motd.social</div>
<script>
const canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');
const info = document.getElementById('info');
// Set canvas to full window size
function resizeCanvas() {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
}
window.addEventListener('resize', resizeCanvas);
resizeCanvas();
// Parameters based on generative art specs
const params = {
motion: 0.5,
density: 0.5,
complexity: 0.5,
connectedness: 0.5,
lifespan: 0.5,
pulse: { avg: 1.06, min: 0.9, max: 1.2 },
tone: { anger: 0, sadness: 0, curiosity: 0.1, dryness: 0.8, playfulness: 0, tension: 0 }
};
// Voronoi Fracture system
const sites = [];
const cells = [];
let time = 0;
let lastTime = 0;
const FRAME_DELAY = 1000 / 60;
// Initialize with density-based points
function initSites() {
sites.length = 0;
const count = Math.floor(50 + params.density * 200);
for (let i = 0; i < count; i++) {
sites.push({
x: Math.random() * canvas.width,
y: Math.random() * canvas.height,
vx: (Math.random() - 0.5) * params.motion * 2,
vy: (Math.random() - 0.5) * params.motion * 2,
fixed: Math.random() > 0.7,
life: Math.random() * params.lifespan * 1000
});
}
}
// Build Voronoi diagram (simplified version)
function buildVoronoi() {
cells.length = 0;
// For each site, find its polygon
for (let i = 0; i < sites.length; i++) {
const cell = {
site: sites[i],
edges: [],
neighbors: []
};
// Find bisectors with all other sites
for (let j = 0; j < sites.length; j++) {
if (i !== j) {
const bisector = findBisector(sites[i], sites[j]);
if (bisector) cell.edges.push(bisector);
// Check if sites are close enough to be neighbors
const dx = sites[i].x - sites[j].x;
const dy = sites[i].y - sites[j].y;
if (dx*dx + dy*dy < 1000 + params.connectedness * 2000) {
cell.neighbors.push(j);
}
}
}
cells.push(cell);
}
}
// Find perpendicular bisector of two points
function findBisector(a, b) {
const cx = (a.x + b.x) / 2;
const cy = (a.y + b.y) / 2;
const dx = b.x - a.x;
const dy = b.y - a.y;
// Perpendicular direction
const px = -dy;
const py = dx;
// Extend the bisector beyond reasonable limits
const len = Math.sqrt(px*px + py*py) || 1;
const nx = px / len;
const ny = py / len;
return {
p1: { x: cx + nx * 2000, y: cy + ny * 2000 },
p2: { x: cx - nx * 2000, y: cy - ny * 2000 }
};
}
// Update sites based on motion and pulse
function updateSites() {
const now = Date.now();
const deltaTime = now - lastTime;
lastTime = now;
time += deltaTime * 0.001 * params.pulse.avg;
// Slight pulse variation
params.pulse.current = params.pulse.avg;
if (Math.random() < 0.02) {
params.pulse.current = params.pulse.min + Math.random() * (params.pulse.max - params.pulse.min);
}
for (let i = 0; i < sites.length; i++) {
const site = sites[i];
// Aging
site.life -= deltaTime * 0.1;
if (site.life <= 0 && !site.fixed) {
// Replace dying sites with new ones near edges
sites[i] = {
x: Math.random() < 0.5 ? 0 : canvas.width,
y: Math.random() * canvas.height,
vx: (Math.random() - 0.5) * params.motion * 2,
vy: (Math.random() - 0.5) * params.motion * 2,
fixed: Math.random() > 0.7,
life: Math.random() * params.lifespan * 1000
};
continue;
}
// Motion
if (!site.fixed) {
site.x += site.vx * params.pulse.current;
site.y += site.vy * params.pulse.current;
// Boundary check
if (site.x < 0 || site.x > canvas.width) site.vx *= -1;
if (site.y < 0 || site.y > canvas.height) site.vy *= -1;
}
}
}
// Draw voronoi cells
function drawVoronoi() {
ctx.strokeStyle = `rgba(255, 255, 255, ${0.6 + params.tone.curiosity * 0.3})`;
ctx.lineWidth = 0.5 + params.complexity * 0.5;
for (let i = 0; i < cells.length; i++) {
const cell = cells[i];
const site = cell.site;
// Only draw live cells
if (site.life <= 0) continue;
// Draw cell polygon (simplified convex hull approximation)
ctx.beginPath();
// Start from site position
ctx.moveTo(site.x, site.y);
// Connect to neighbors
for (let j = 0; j < cell.neighbors.length; j++) {
const neighborIndex = cell.neighbors[j];
const neighbor = cells[neighborIndex].site;
if (neighbor.life > 0) {
ctx.lineTo(neighbor.x, neighbor.y);
}
}
// Close path
ctx.closePath();
ctx.stroke();
// Draw site marker
const alpha = Math.min(1, site.life / 500);
ctx.fillStyle = `rgba(255, 255, 255, ${alpha * 0.8})`;
ctx.beginPath();
ctx.arc(site.x, site.y, 2 + (1 - params.tone.dryness) * 1, 0, Math.PI * 2);
ctx.fill();
}
}
// Clear with slight fade
function clearCanvas() {
ctx.fillStyle = 'rgba(0, 0, 0, 0.05)';
ctx.fillRect(0, 0, canvas.width, canvas.height);
}
// Main animation loop
function animate() {
clearCanvas();
updateSites();
buildVoronoi();
drawVoronoi();
// Update info
const fps = Math.round(1000 / (Date.now() - lastTime));
info.textContent = `voronoi system | ${fps} fps`;
requestAnimationFrame(animate);
}
// Start with initial sites
initSites();
buildVoronoi();
animate();
</script>
</body>
</html>