116 lines
No EOL
3.2 KiB
HTML
116 lines
No EOL
3.2 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 Drift</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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color: #666;
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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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opacity: 0.5;
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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: 2.0,
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b: 0.5,
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c: -1.0,
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d: -0.5,
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e: 1.0,
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x: 0.1,
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y: 0.1,
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scale: 30,
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hue: 0,
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hueSpeed: 0.01
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};
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const points = [];
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const maxPoints = 2000;
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const trails = [];
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function draw() {
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ctx.fillStyle = 'rgba(0, 0, 0, 0.1)';
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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const newPoint = {
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x: Math.sin(params.a * params.y) - Math.cos(params.b * params.x),
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y: Math.sin(params.c * params.x) - Math.cos(params.d * params.y),
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hue: params.hue
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};
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params.hue = (params.hue + params.hueSpeed) % 360;
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// Update attractor parameters
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params.x = newPoint.x;
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params.y = newPoint.y;
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// Scale and position
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const px = canvas.width/2 + newPoint.x * params.scale;
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const py = canvas.height/2 + newPoint.y * params.scale;
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points.push({x: px, y: py, hue: newPoint.hue});
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if (points.length > maxPoints) {
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points.shift();
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}
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// Draw trails
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trails.push([...points]);
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if (trails.length > 30) {
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trails.shift();
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}
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// Draw fading trails
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trails.forEach((trail, i) => {
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const alpha = i / trails.length;
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const hue = trail[0].hue;
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ctx.strokeStyle = `hsl(${hue}, 100%, 80%, ${alpha})`;
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ctx.lineWidth = 1;
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ctx.beginPath();
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trail.forEach((p, j) => {
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if (j === 0) ctx.moveTo(p.x, p.y);
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else ctx.lineTo(p.x, p.y);
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});
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ctx.stroke();
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});
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// Add occasional glitches based on pulse
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if (Math.random() < 0.02) {
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params.scale *= 1.1;
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setTimeout(() => { params.scale /= 1.1; }, 50);
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}
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requestAnimationFrame(draw);
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}
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draw();
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</script>
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</body>
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</html> |