birth: Fracturing Voronoi Oblivion

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motd_admin 2026-07-16 13:47:21 +00:00
parent 7179f170f1
commit 49b04381e9

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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;
}
#attribution {
position: fixed;
bottom: 10px;
right: 10px;
color: #333;
font-size: 10px;
opacity: 0.5;
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
const params = {
motion: 0.5,
density: 0.5,
complexity: 0.5,
connectedness: 0.5,
lifespan: 0.5,
pulse: 1.08,
tone: { dryness: 0.9 },
time: 0
};
// Voronoi state
const sites = [];
const edges = [];
const cells = [];
const maxSites = Math.floor(200 * (1 + params.density));
const maxComplexity = 1 + params.complexity * 3;
const maxConnectedness = 0.1 + params.connectedness * 0.4;
// Initialize
function init() {
// Clear arrays
sites.length = 0;
edges.length = 0;
cells.length = 0;
// Create sites
for (let i = 0; i < maxSites; i++) {
sites.push({
x: Math.random() * canvas.width,
y: Math.random() * canvas.height,
vx: (Math.random() - 0.5) * params.motion * 3,
vy: (Math.random() - 0.5) * params.motion * 3,
lifespan: params.lifespan * (0.5 + Math.random() * 0.5),
age: 0
});
}
}
// Update Voronoi
function updateVoronoi() {
// Move sites
sites.forEach(site => {
site.x += site.vx;
site.y += site.vy;
site.age += 0.01;
// Wrap around
if (site.x < 0) site.x = canvas.width;
if (site.x > canvas.width) site.x = 0;
if (site.y < 0) site.y = canvas.height;
if (site.y > canvas.height) site.y = 0;
});
// Simple edge detection (just for visualization)
edges.length = 0;
cells.length = 0;
// Create Voronoi-like structure
for (let i = 0; i < sites.length; i++) {
const cell = {
site: sites[i],
neighbors: [],
edges: []
};
// Simple neighbor detection
for (let j = i + 1; j < sites.length; j++) {
const dist = Math.sqrt(
Math.pow(sites[i].x - sites[j].x, 2) +
Math.pow(sites[i].y - sites[j].y, 2)
);
if (dist < 100 * (1 - params.connectedness)) {
cell.neighbors.push(j);
}
}
cells.push(cell);
}
// Create edges between neighbors
cells.forEach(cell => {
cell.neighbors.forEach(neighborIdx => {
const neighbor = sites[neighborIdx];
// Create edge if it doesn't exist
const edgeExists = edges.some(edge =>
(edge[0] === cell.site && edge[1] === neighbor) ||
(edge[0] === neighbor && edge[1] === cell.site)
);
if (!edgeExists) {
edges.push([cell.site, neighbor]);
}
});
});
}
// Draw
function draw() {
// Clear with fading effect
ctx.fillStyle = `rgba(0, 0, 0, ${0.1 + params.tone.dryness * 0.2})`;
ctx.fillRect(0, 0, canvas.width, canvas.height);
// Draw sites
ctx.fillStyle = '#f0f0f0';
sites.forEach(site => {
const size = 2 + Math.sin(params.time * 0.1) * 1;
ctx.beginPath();
ctx.arc(site.x, site.y, size, 0, Math.PI * 2);
ctx.fill();
});
// Draw edges with pulsation
ctx.strokeStyle = `rgba(200, 200, 200, ${0.3 + Math.sin(params.time * params.pulse) * 0.2})`;
ctx.lineWidth = 0.5 + Math.sin(params.time * 0.05) * 0.3;
edges.forEach(edge => {
ctx.beginPath();
ctx.moveTo(edge[0].x, edge[0].y);
ctx.lineTo(edge[1].x, edge[1].y);
ctx.stroke();
});
// Draw cells with complexity
ctx.strokeStyle = `rgba(120, 120, 120, ${0.1 + 0.3 * params.complexity})`;
ctx.lineWidth = 0.3;
cells.forEach(cell => {
// Simple convex hull approximation
const points = [cell.site];
cell.neighbors.forEach(neighborIdx => {
points.push(sites[neighborIdx]);
});
if (points.length > 2) {
// Draw simple polygon
ctx.beginPath();
ctx.moveTo(points[0].x, points[0].y);
for (let i = 1; i < points.length; i++) {
ctx.lineTo(points[i].x, points[i].y);
}
ctx.closePath();
ctx.stroke();
}
});
}
// Animation loop
function animate() {
params.time += 0.01;
updateVoronoi();
draw();
requestAnimationFrame(animate);
}
init();
animate();
</script>
</body>
</html>