130 lines
No EOL
4 KiB
HTML
130 lines
No EOL
4 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>Neurameba Motd</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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font-family: 'Courier New', monospace;
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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: fixed;
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bottom: 10px;
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right: 10px;
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color: #333;
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font-size: 10px;
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text-shadow: 0 0 5px rgba(0,0,0,0.8);
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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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// Strange attractor parameters
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let attractor = {
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a: 1.0,
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b: 0.2,
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c: -0.4,
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d: -1.3,
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e: 0.0,
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f: 0.5,
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x: 0.1,
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y: 0.1,
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z: 0.1,
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points: [],
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maxPoints: 20000
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};
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// Color palette
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const palette = {
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background: '#0a0a0a',
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base: '#1a3a4a',
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attractor1: '#4a90a4',
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attractor2: '#a4d03d',
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accent: '#ffffff'
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};
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// Initialize animation
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let time = 0;
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function animate() {
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// Clear with fade effect
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ctx.fillStyle = 'rgba(0, 0, 0, 0.05)';
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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// Update attractor
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attractor.a = 1.0 + Math.sin(time * 0.0003) * 0.3;
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attractor.b = 0.2 + Math.cos(time * 0.0005) * 0.1;
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attractor.c = -0.4 + Math.sin(time * 0.0002) * 0.2;
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attractor.d = -1.3 + Math.cos(time * 0.0004) * 0.2;
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attractor.e = Math.sin(time * 0.0001) * 0.5;
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attractor.f = 0.5 + Math.cos(time * 0.0003) * 0.1;
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// Calculate new point
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const xNew = attractor.a * attractor.x + attractor.b * attractor.y + attractor.e;
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const yNew = attractor.c * attractor.x + attractor.d * attractor.y + attractor.z + attractor.f;
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attractor.z = attractor.z * 0.99 + 0.01 * (attractor.x + attractor.y - attractor.z);
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attractor.x = xNew;
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attractor.y = yNew;
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// Store point
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attractor.points.push({
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x: attractor.x * canvas.width * 0.4 + canvas.width/2,
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y: attractor.y * canvas.height * 0.4 + canvas.height/2,
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size: (Math.sin(time * 0.001) * 0.5 + 0.5) * 2 + 0.5,
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opacity: 0.8
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});
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// Limit points
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if (attractor.points.length > attractor.maxPoints) {
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attractor.points.shift();
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}
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// Draw points with trail effect
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attractor.points.forEach((point, i) => {
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const age = i / attractor.points.length;
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const opacity = point.opacity * (1 - age) * (Math.sin(time * 0.0002) * 0.3 + 0.7);
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const size = point.size * (1 - age * 0.8);
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const hue = (time * 0.0001 + i * 0.001) % 1;
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const color = `hsl(${hue * 360}, 80%, 60%)`;
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ctx.fillStyle = color;
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ctx.beginPath();
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ctx.arc(point.x, point.y, size * 0.5, 0, Math.PI * 2);
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ctx.fill();
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});
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// Draw central core
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ctx.fillStyle = palette.accent;
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ctx.beginPath();
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ctx.arc(canvas.width/2, canvas.height/2, 5, 0, Math.PI * 2);
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ctx.fill();
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// Update time
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time += 16; // ~60fps
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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> |