170 lines
No EOL
5.6 KiB
HTML
170 lines
No EOL
5.6 KiB
HTML
<!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>Fractal Nebula</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: #aaa;
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font-family: 'Courier New', monospace;
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font-size: 10px;
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}
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canvas {
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display: block;
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}
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#attribution {
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position: absolute;
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bottom: 10px;
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right: 10px;
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font-size: 10px;
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color: #555;
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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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// Parameters from prompt
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const params = {
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motion: 0.581,
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density: 0.466,
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complexity: 0.481,
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connectedness: 0.575,
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lifespan: 0.488,
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pulse: { avg: 0.38, min: 0.3, max: 1.65 },
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tone: { anger: 0.0, sadness: 0.0, curiosity: 0.1, dryness: 0.9, playfulness: 0.0, tension: 0.0 },
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topology: {
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nodes: 75,
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branches: 67,
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loops: 953,
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maxDepth: 16,
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thicknessRatio: 1.25,
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fractalDim: 1.73,
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energy: 445
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}
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};
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// Fractal parameters
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const maxDepth = Math.floor(params.topology.maxDepth * 2);
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const branchCount = Math.floor(params.topology.branches * 0.8);
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const thickness = Math.max(0.5, params.topology.thicknessRatio * 0.8);
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// Color palette
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const isMonochrome = params.tone.dryness > 0.8;
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const baseHue = params.tone.curiosity > 0.5 ? 180 : 0;
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const hueVariation = 20;
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const saturation = isMonochrome ? 0 : 30 + Math.floor(params.topology.energy / 20);
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const lightness = isMonochrome ? 20 + Math.floor(params.topology.energy / 15) : 40;
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// Fractal node
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class FractalNode {
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constructor(x, y, depth = 0) {
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this.x = x;
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this.y = y;
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this.depth = depth;
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this.children = [];
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this.age = 0;
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this.maxAge = params.topology.maxDepth - depth;
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this.size = thickness * (1 - depth / maxDepth) * (0.5 + params.density * 0.5);
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this.targetSize = this.size * (0.8 + Math.random() * 0.4);
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this.hue = baseHue + (Math.random() - 0.5) * hueVariation * 2;
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}
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grow() {
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if (this.depth >= maxDepth) return;
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const childCount = Math.floor(branchCount * (0.5 + 0.5 * params.connectedness));
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for (let i = 0; i < childCount; i++) {
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const angle = (i / childCount) * Math.PI * 2 + (Math.random() - 0.5) * 0.3;
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const length = 20 + Math.random() * 30;
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const branchThickness = this.size * 0.7;
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const child = new FractalNode(
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this.x + Math.cos(angle) * length,
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this.y + Math.sin(angle) * length,
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this.depth + 1
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);
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this.children.push(child);
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}
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}
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update() {
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this.age++;
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this.size += (this.targetSize - this.size) * 0.1;
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// Pulse effect
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const pulseFactor = params.pulse.avg + (Math.random() - 0.5) * 0.2;
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this.size *= 1 + (pulseFactor - 1) * 0.3;
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this.children.forEach(child => child.update());
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}
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draw() {
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if (this.depth > 0) {
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ctx.beginPath();
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ctx.moveTo(this.x, this.y);
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ctx.lineTo(
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this.x + (this.children[0]?.x - this.x) * 0.5,
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this.y + (this.children[0]?.y - this.y) * 0.5
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);
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ctx.strokeStyle = isMonochrome ?
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`hsl(0, 0%, ${lightness}%)` :
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`hsl(${this.hue}, ${saturation}%, ${lightness}%)`;
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ctx.lineWidth = this.size;
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ctx.stroke();
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// Draw children
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this.children.forEach(child => child.draw());
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}
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}
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}
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// Create root nodes
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const rootNodes = [];
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for (let i = 0; i < params.topology.nodes; i++) {
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rootNodes.push(new FractalNode(
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canvas.width * 0.5 + (Math.random() - 0.5) * canvas.width * 0.8,
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canvas.height * 0.5 + (Math.random() - 0.5) * canvas.height * 0.8
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));
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}
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// Initial growth
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rootNodes.forEach(node => node.grow());
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// Animation loop
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function animate() {
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// Clear with slight fade
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ctx.fillStyle = `rgba(10, 10, 10, ${0.05 + params.motion * 0.05})`;
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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// Update and draw
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rootNodes.forEach(node => {
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node.update();
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node.draw();
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});
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requestAnimationFrame(animate);
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}
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animate();
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</script>
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</body>
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</html> |