135 lines
No EOL
4.3 KiB
HTML
135 lines
No EOL
4.3 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>Strange Attraction</title>
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<style>
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body, html {
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margin: 0;
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padding: 0;
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height: 100%;
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overflow: hidden;
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background: #000;
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color: #fff;
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font-family: 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: absolute;
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bottom: 20px;
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right: 20px;
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font-size: 10px;
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color: rgba(255, 255, 255, 0.3);
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text-shadow: 1px 1px 2px #000;
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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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canvas.width = window.innerWidth;
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canvas.height = window.innerHeight;
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window.addEventListener('resize', () => {
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canvas.width = window.innerWidth;
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canvas.height = window.innerHeight;
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});
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// Parameters from prompt
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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: {
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avg: 1.1,
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min: 1.0,
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max: 1.2
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},
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tone: {
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anger: 0.0,
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sadness: 0.0,
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curiosity: 0.3,
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dryness: 0.8,
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playfulness: 0.0,
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tension: 0.0
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}
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};
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// Strange attractor parameters (modified by input params)
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const attractor = {
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a: 1.4 + params.motion * 0.6,
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b: 2.3 + params.connectedness * 0.7,
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c: 0.8 - params.dryness * 0.3,
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d: 2.0 + params.complexity * 0.5,
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points: [],
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maxPoints: 10000 * params.density,
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color: `hsl(180, ${20 + params.tone.curiosity * 30}%, ${50 + params.tone.dryness * 20}%)`
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};
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// Initialize points
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for (let i = 0; i < attractor.maxPoints; i++) {
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attractor.points.push({
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x: Math.random() * 2 - 1,
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y: Math.random() * 2 - 1
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});
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}
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// Animation parameters
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let time = 0;
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const maxTrailLength = 500 * params.lifespan;
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const pulseRange = params.pulse.max - params.pulse.min;
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const pulseFreq = 0.002 + params.pulse.avg * 0.005;
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function animate() {
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// Clear with slight fade
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ctx.fillStyle = `rgba(0, 0, 0, 0.02)`;
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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// Calculate pulse effect
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const pulse = params.pulse.min + Math.sin(time * pulseFreq) * pulseRange;
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// Update and draw points
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attractor.points.forEach(point => {
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// Strange attractor equations (modified)
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const x1 = point.x;
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const y1 = point.y;
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point.x = Math.sin(params.a * y1) - Math.cos(params.b * x1);
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point.y = Math.sin(params.c * x1) - Math.cos(params.d * y1);
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// Scale and center
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const scale = Math.min(canvas.width, canvas.height) * 0.4;
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const x = point.x * scale + canvas.width / 2;
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const y = point.y * scale + canvas.height / 2;
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// Draw with trail
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const trailLength = maxTrailLength * pulse;
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const alpha = Math.min(1, 1 - (attractor.points.indexOf(point) / attractor.maxPoints));
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// Create gradient for smoky effect
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const gradient = ctx.createRadialGradient(x, y, 0, x, y, 5);
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gradient.addColorStop(0, attractor.color + ', 0.8)');
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gradient.addColorStop(1, attractor.color + ', 0');
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ctx.fillStyle = gradient;
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ctx.beginPath();
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ctx.arc(x, y, alpha * trailLength * 0.01, 0, Math.PI * 2);
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ctx.fill();
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});
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time += 0.005 * params.motion;
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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> |