birth: Hexagonal Pulse Fields

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motd_admin 2026-03-27 05:47:15 +00:00
parent f56def48f7
commit 42b1cb77f6

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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>Generative Tessellation</title>
<style>
body {
margin: 0;
overflow: hidden;
background: #000;
font-family: 'Courier New', monospace;
}
canvas {
display: block;
}
#attribution {
position: absolute;
bottom: 10px;
right: 10px;
color: #333;
font-size: 10px;
mix-blend-mode: difference;
}
</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 derived from input
const params = {
motion: 0.5,
density: 0.5,
complexity: 0.5,
connectedness: 0.5,
lifespan: 0.5,
pulse_avg: 1.16,
pulse_min: 0.3,
pulse_max: 2.0,
dryness: 0.9
};
// Generate palette based on tone parameters
const palette = {
bg: '#000000',
fg: params.dryness > 0.8 ? '#333333' : '#cccccc',
accent: '#888888'
};
// Tessellation system
const cells = [];
const cellSize = 20 + (15 * params.density);
const cols = Math.ceil(canvas.width / cellSize);
const rows = Math.ceil(canvas.height / cellSize);
// Initialize hexagonal grid
for (let y = 0; y < rows; y++) {
for (let x = 0; x < cols; x++) {
cells.push({
x: x * cellSize * 1.5,
y: y * cellSize * Math.sqrt(3),
state: Math.random() < 0.5 ? 0 : 1,
targetState: 0,
neighbors: [],
size: cellSize * (0.5 + Math.random() * 0.5)
});
}
}
// Connect neighbors
cells.forEach(cell => {
const neighborOffsets = [
[-1, 0], [1, 0], [0, -1], [0, 1],
[-1, -1], [1, -1], [-1, 1], [1, 1]
];
neighborOffsets.forEach(([ox, oy]) => {
const nx = cell.x / (cellSize * 1.5) + ox;
const ny = cell.y / (cellSize * Math.sqrt(3)) + oy;
if (nx >= 0 && nx < cols && ny >= 0 && ny < rows) {
const neighbor = cells[Math.floor(ny) * cols + Math.floor(nx)];
if (neighbor) cell.neighbors.push(neighbor);
}
});
});
// Animation state
let time = 0;
let pulse = params.pulse_avg;
function animate() {
// Background
ctx.fillStyle = palette.bg;
ctx.fillRect(0, 0, canvas.width, canvas.height);
// Update pulse
pulse = params.pulse_avg + Math.sin(time * 0.001) * (params.pulse_max - params.pulse_avg);
if (params.motion < 0.3) pulse = params.pulse_avg;
// Update cell states
cells.forEach(cell => {
if (Math.random() < 0.02 * params.motion * pulse) {
cell.targetState = cell.state === 0 ? 1 : 0;
}
if (cell.state !== cell.targetState) {
const changeSpeed = 0.05 * params.motion * pulse;
cell.state += cell.targetState > cell.state ? changeSpeed : -changeSpeed;
if (Math.abs(cell.state - cell.targetState) < changeSpeed * 2) {
cell.state = cell.targetState;
}
}
// Update size based on state
cell.size = cellSize * (0.5 + cell.state * (0.5 + Math.sin(time * 0.002) * 0.2));
});
// Draw connections
if (params.connectedness > 0.3) {
ctx.strokeStyle = palette.fg;
ctx.lineWidth = 0.5;
cells.forEach(cell => {
cell.neighbors.forEach(neighbor => {
if (cell.state > 0.1 && neighbor.state > 0.1) {
const dist = Math.sqrt(
Math.pow(cell.x - neighbor.x, 2) +
Math.pow(cell.y - neighbor.y, 2)
);
if (dist < cellSize * 2 * params.connectedness) {
const alpha = (cell.state + neighbor.state) * 0.5 * Math.min(1, dist / (cellSize * 1.5));
ctx.globalAlpha = alpha * 0.3;
ctx.beginPath();
ctx.moveTo(cell.x, cell.y);
ctx.lineTo(neighbor.x, neighbor.y);
ctx.stroke();
}
}
});
});
ctx.globalAlpha = 1;
}
// Draw cells
cells.forEach(cell => {
const alpha = cell.state * (0.7 + Math.sin(time * 0.003 + cell.x * 0.01) * 0.3);
ctx.fillStyle = `rgba(${Math.floor(180 + cell.state * 75)}, ${Math.floor(180 + cell.state * 75)}, ${Math.floor(180 + cell.state * 75)}, ${alpha})`;
// Hexagon shape
ctx.beginPath();
for (let i = 0; i < 6; i++) {
const angle = (Math.PI / 3) * i + Math.sin(time * 0.001 + cell.x * 0.01) * 0.2;
const px = cell.x + Math.cos(angle) * cell.size;
const py = cell.y + Math.sin(angle) * cell.size;
if (i === 0) ctx.moveTo(px, py);
else ctx.lineTo(px, py);
}
ctx.closePath();
ctx.fill();
// Inner glow
if (cell.state > 0.8) {
ctx.fillStyle = `rgba(255, 255, 255, ${(cell.state - 0.8) * 5})`;
ctx.beginPath();
for (let i = 0; i < 6; i++) {
const angle = (Math.PI / 3) * i + Math.sin(time * 0.001 + cell.x * 0.01) * 0.2;
const px = cell.x + Math.cos(angle) * (cell.size * 0.7);
const py = cell.y + Math.sin(angle) * (cell.size * 0.7);
if (i === 0) ctx.moveTo(px, py);
else ctx.lineTo(px, py);
}
ctx.closePath();
ctx.fill();
}
});
time += 16;
requestAnimationFrame(animate);
}
animate();
</script>
</body>
</html>