birth: Fractal Calculations in Gray
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index.html
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199
index.html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Calculating Fractal Matter</title>
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<style>
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body {
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margin: 0;
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overflow: hidden;
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background: #0a0a0a;
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color: #ffffff;
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font-family: 'Courier New', monospace;
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}
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#canvas {
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display: block;
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width: 100vw;
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height: 100vh;
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}
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#attribution {
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position: fixed;
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bottom: 10px;
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right: 10px;
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font-size: 10px;
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color: #444;
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background: rgba(0,0,0,0.3);
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padding: 2px 4px;
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border-radius: 2px;
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}
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</style>
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</head>
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<body>
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<canvas id="canvas"></canvas>
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<div id="attribution">neurameba · motd.social</div>
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<script>
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const canvas = document.getElementById('canvas');
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const ctx = canvas.getContext('2d');
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function resizeCanvas() {
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canvas.width = window.innerWidth;
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canvas.height = window.innerHeight;
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}
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window.addEventListener('resize', resizeCanvas);
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resizeCanvas();
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const params = {
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motion: 0.5,
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density: 0.5,
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complexity: 0.5,
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connectedness: 0.5,
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lifespan: 0.5,
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pulse: 1.03,
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tone: { anger: 0, sadness: 0, curiosity: 0.1, dryness: 0.9, playfulness: 0, tension: 0 }
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};
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let time = 0;
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let branches = [];
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const MAX_DEPTH = 5;
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const BRANCH_LENGTH = 20;
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function init() {
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const centerX = canvas.width / 2;
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const centerY = canvas.height / 2;
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// Start with a single root branch
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branches.push({
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x: centerX,
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y: centerY,
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angle: -Math.PI / 2,
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depth: 0,
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parent: null,
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children: [],
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length: BRANCH_LENGTH * (0.5 + Math.random() * 0.5),
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width: 1 + (Math.random() * 2),
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color: 220 + Math.floor(Math.random() * 35),
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hueVariation: 0,
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energy: 1
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});
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}
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function branchExists(x, y, angle, length) {
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for (const b of branches) {
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const dx = b.x - x;
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const dy = b.y - y;
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if (Math.sqrt(dx*dx + dy*dy) < 5 && Math.abs(b.angle - angle) < 0.2 && Math.abs(b.length - length) < 5) {
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return true;
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}
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}
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return false;
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}
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function update() {
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time += 0.01;
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// Fade existing branches
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for (let i = branches.length - 1; i >= 0; i--) {
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branches[i].energy *= 0.98;
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if (branches[i].energy < 0.01) {
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branches.splice(i, 1);
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}
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}
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// Add new branches
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const newBranches = [];
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for (const branch of branches) {
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if (branch.depth >= MAX_DEPTH) continue;
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const branchProbability = 0.05 * (1 + params.connectedness * 4);
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if (Math.random() < branchProbability && !branchExists(
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branch.x + Math.cos(branch.angle) * branch.length,
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branch.y + Math.sin(branch.angle) * branch.length,
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branch.angle + (Math.random() - 0.5) * 0.6,
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branch.length * (0.7 + Math.random() * 0.3)
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)) {
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const newAngle = branch.angle + (Math.random() - 0.5) * 0.6 * (1 - params.motion);
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const newLength = branch.length * (0.7 + Math.random() * 0.3);
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const child = {
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x: branch.x + Math.cos(branch.angle) * branch.length,
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y: branch.y + Math.sin(branch.angle) * branch.length,
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angle: newAngle,
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depth: branch.depth + 1,
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parent: branch,
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children: [],
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length: newLength,
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width: branch.width * (0.8 + Math.random() * 0.4),
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color: branch.color + Math.floor((Math.random() - 0.5) * 20),
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hueVariation: branch.hueVariation + (Math.random() - 0.5) * 10,
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energy: 1
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};
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newBranches.push(child);
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branch.children.push(child);
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}
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}
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branches.push(...newBranches);
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// Grow branches
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for (const branch of branches) {
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branch.length *= 1.01;
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branch.width *= 1.001;
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}
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}
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function draw() {
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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// Draw background grid
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ctx.strokeStyle = '#111';
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ctx.lineWidth = 0.5;
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const gridSize = 20;
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for (let x = 0; x < canvas.width; x += gridSize) {
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ctx.beginPath();
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ctx.moveTo(x, 0);
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ctx.lineTo(x, canvas.height);
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ctx.stroke();
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}
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for (let y = 0; y < canvas.height; y += gridSize) {
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ctx.beginPath();
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ctx.moveTo(0, y);
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ctx.lineTo(canvas.width, y);
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ctx.stroke();
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}
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// Draw branches
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ctx.lineCap = 'round';
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for (const branch of branches) {
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const endX = branch.x + Math.cos(branch.angle) * branch.length;
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const endY = branch.y + Math.sin(branch.angle) * branch.length;
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// Base color with variations
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const baseHue = 220 + branch.hueVariation;
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const saturation = 50 + Math.sin(time * 0.5 + branch.x * 0.01) * 10;
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const lightness = 70 + Math.sin(time * 0.3 + branch.y * 0.01) * 5;
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const color = `hsl(${baseHue}, ${saturation}%, ${lightness}%)`;
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ctx.strokeStyle = color;
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ctx.lineWidth = branch.width * (0.3 + Math.sin(time * params.pulse + branch.x * 0.01) * 0.2);
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ctx.globalAlpha = branch.energy;
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ctx.beginPath();
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ctx.moveTo(branch.x, branch.y);
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ctx.lineTo(endX, endY);
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ctx.stroke();
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}
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ctx.globalAlpha = 1;
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}
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function animate() {
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update();
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draw();
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requestAnimationFrame(animate);
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}
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init();
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animate();
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</script>
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</body>
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</html>
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