neurameba/monochrome-veins-pulse-pzcc
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birth: monochrome veins pulse

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motd_admin 2026-08-11 14:21:18 +00:00
parent 9e0ee156b8
commit 6dd458eafd
1 changed files with 101 additions and 0 deletions
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<!DOCTYPE html>
<html>
<head>
<title>Pulsing Fractal Veins</title>
<style>
body { margin: 0; overflow: hidden; background: #0a0a0a; }
canvas { display: block; }
#attribution { position: absolute; bottom: 10px; right: 10px; color: #333; font-family: monospace; font-size: 10px; }
</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 resize() {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
}
window.addEventListener('resize', resize);
resize();
// Cellular automata parameters (dryness=0.90, complexity=0.50)
const cellSize = 5;
const cols = Math.floor(canvas.width / cellSize);
const rows = Math.floor(canvas.height / cellSize);
// Initialize grid with binary states (0 or 1)
let grid = Array.from({length: rows}, () => Array.from({length: cols}, () => Math.random() > 0.8 ? 1 : 0));
// Rule: Conway's Game of Life with slight variation to create pulsating patterns
function updateGrid() {
const newGrid = grid.map(arr => [...arr]);
for (let y = 0; y < rows; y++) {
for (let x = 0; x < cols; x++) {
let alive = grid[y][x];
let neighbors = 0;
// Count live neighbors with wrap-around
for (let dy = -1; dy <= 1; dy++) {
for (let dx = -1; dx <= 1; dx++) {
if (dx === 0 && dy === 0) continue;
const nx = (x + dx + cols) % cols;
const ny = (y + dy + rows) % rows;
neighbors += grid[ny][nx];
}
}
// Cellular automata rules - variation to create organic growth
if (alive) {
newGrid[y][x] = neighbors >= 2 && neighbors <= 5 ? 1 : 0;
} else {
newGrid[y][x] = neighbors === 3 || neighbors === 6 ? 1 : 0;
}
}
}
grid = newGrid;
}
// Drawing with dryness tone (monochrome)
function draw() {
// Fade previous frame with low alpha for persistence
ctx.fillStyle = 'rgba(0, 0, 0, 0.05)';
ctx.fillRect(0, 0, canvas.width, canvas.height);
// Calculate intensity based on cellular automata state
ctx.fillStyle = `rgba(255, 255, 255, 0.8)`;
for (let y = 0; y < rows; y++) {
for (let x = 0; x < cols; x++) {
if (grid[y][x]) {
const px = x * cellSize;
const py = y * cellSize;
ctx.fillRect(px, py, cellSize * 0.8, cellSize * 0.8);
// Add slight pulsing effect based on global pulse
const pulse = 1.06 + Math.sin(Date.now() * 0.001 * (0.9 + Math.random() * 0.3)) * 0.1;
ctx.fillStyle = `rgba(255, 255, 255, ${0.6 * pulse})`;
ctx.fillRect(px + cellSize * 0.1, py + cellSize * 0.1,
cellSize * 0.6 * pulse, cellSize * 0.6 * pulse);
ctx.fillStyle = `rgba(255, 255, 255, 0.8)`;
}
}
}
}
function animate() {
updateGrid();
draw();
requestAnimationFrame(animate);
}
// Start animation
animate();
</script>
</body>
</html>