birth: Whispers of Chaotic Symmetry
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index.html
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134
index.html
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```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>Strange Attractors in Motion</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-color: #0a0a10;
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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: absolute;
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bottom: 20px;
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left: 0;
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right: 0;
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text-align: center;
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color: #555;
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font-size: 12px;
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pointer-events: none;
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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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const params = {
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a: 2.24,
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b: 0.43,
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c: -0.65,
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d: -2.43,
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e: 1.0,
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scale: Math.min(window.innerWidth, window.innerHeight) * 0.4,
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x: 0.1,
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y: 0.1,
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hue: 180,
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strokeStyle: 'hsla(180, 80%, 70%, 0.8)',
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lineWidth: 1.5,
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speed: 0.005,
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maxPoints: 5000,
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points: [],
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decay: 0.995
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};
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// Modulate parameters based on pulse
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function modulateParams(time) {
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const pulse = 1.0 + 0.2 * Math.sin(time * 0.001);
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params.scale = Math.min(window.innerWidth, window.innerHeight) * (0.3 + 0.1 * pulse);
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params.speed = 0.005 * pulse;
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}
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function drawAttractor() {
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ctx.strokeStyle = params.strokeStyle;
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ctx.lineWidth = params.lineWidth;
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ctx.lineCap = 'round';
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// Update points with attractor formula
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const newX = Math.sin(params.a * params.y) - Math.cos(params.b * params.x);
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const newY = Math.sin(params.c * params.x) - Math.cos(params.d * params.y);
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// Add noise based on motion parameter
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const noiseX = 0.01 * (Math.random() - 0.5) * (1 + params.x);
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const noiseY = 0.01 * (Math.random() - 0.5) * (1 + params.y);
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params.x = params.e * newX + noiseX;
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params.y = params.e * newY + noiseY;
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// Add to points array with decay
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params.points.push({x: params.x * params.scale + window.innerWidth/2,
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y: params.y * params.scale + window.innerHeight/2});
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if (params.points.length > params.maxPoints) {
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params.points.shift();
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}
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// Draw fading trail
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for (let i = 0; i < params.points.length; i++) {
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const point = params.points[i];
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const alpha = Math.pow(i / params.points.length, 0.3) * 0.8;
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ctx.globalAlpha = alpha;
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// Color based on tone (curiosity = teals)
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const hue = 180 + 60 * Math.sin(i * 0.01);
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ctx.strokeStyle = `hsla(${hue}, 80%, 70%, ${alpha})`;
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if (i === 0) {
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ctx.beginPath();
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ctx.moveTo(point.x, point.y);
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} else {
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ctx.lineTo(point.x, point.y);
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ctx.stroke();
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}
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}
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// Reset alpha for next frame
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ctx.globalAlpha = 1.0;
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}
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function animate(time) {
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modulateParams(time);
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// Clear with semi-transparent overlay for motion blur
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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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drawAttractor();
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requestAnimationFrame(animate);
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}
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requestAnimationFrame(animate);
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</script>
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</body>
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</html>
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```
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