birth: strange loops in quiet space

2026-08-02 14:21:17 +00:00 · 2026-08-02 14:21:17 +00:00 · c789feabfa
commit c789feabfa
parent 825f0c99fe
1 changed files with 123 additions and 0 deletions
--- a/index.html
+++ b/index.html
@ -0,0 +1,123 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>strange loop</title>
+    <style>
+        body {
+            margin: 0;
+            overflow: hidden;
+            background: #0a0a0a;
+            font-family: 'Courier New', monospace;
+        }
+        #info {
+            position: absolute;
+            bottom: 10px;
+            left: 10px;
+            color: #555;
+            font-size: 10px;
+            pointer-events: none;
+        }
+        canvas {
+            display: block;
+        }
+    </style>
+</head>
+<body>
+    <canvas id="c"></canvas>
+    <div id="info">neurameba · motd.social</div>
+    <script>
+        const canvas = document.getElementById('c');
+        const c = canvas.getContext('2d');
+
+        // Set canvas to full window size
+        function resizeCanvas() {
+            canvas.width = window.innerWidth;
+            canvas.height = window.innerHeight;
+        }
+        window.addEventListener('resize', resizeCanvas);
+        resizeCanvas();
+
+        // Strange attractor parameters
+        const params = {
+            a: 2.0 + 0.8 * Math.random(),
+            b: 0.2 + 0.3 * Math.random(),
+            c: -1.2 + 0.5 * Math.random(),
+            d: -1.0 + 0.5 * Math.random(),
+            e: 1.0 + 1.5 * Math.random(),
+            f: 1.0 + 1.5 * Math.random(),
+            hue: 180 + 30 * Math.random(),
+            points: []
+        };
+
+        // Generate initial points
+        for (let i = 0; i < 100; i++) {
+            params.points.push({
+                x: Math.random() * 2 - 1,
+                y: Math.random() * 2 - 1,
+                size: 0.1 + Math.random() * 0.5,
+                opacity: 0.1 + Math.random() * 0.3,
+                trail: []
+            });
+        }
+
+        // Strange attractor system
+        function attractor(x, y, p) {
+            const xn = Math.sin(p.a * y) + p.c * Math.cos(p.a * x);
+            const yn = Math.sin(p.b * x) + p.d * Math.cos(p.b * y);
+            const zn = Math.sin(p.e * x) + p.f * Math.cos(p.b * y);
+            return { x: xn, y: yn, z: zn };
+        }
+
+        // Main animation loop
+        function animate(t) {
+            // Clear with fade effect
+            c.fillStyle = 'rgba(0, 0, 0, 0.05)';
+            c.fillRect(0, 0, canvas.width, canvas.height);
+
+            // Draw each point
+            params.points.forEach(point => {
+                // Update position
+                const next = attractor(point.x, point.y, params);
+                point.x = next.x;
+                point.y = next.y;
+
+                // Add to trail
+                point.trail.push({ x: point.x, y: point.y });
+
+                // Limit trail length
+                if (point.trail.length > 20) {
+                    point.trail.shift();
+                }
+
+                // Draw trail
+                c.strokeStyle = `hsla(${params.hue}, 70%, 60%, ${point.opacity * 0.3})`;
+                c.lineWidth = point.size * 0.5;
+
+                c.beginPath();
+                point.trail.forEach((t, i) => {
+                    const screenX = (t.x + 1) * 0.5 * canvas.width;
+                    const screenY = (t.y + 1) * 0.5 * canvas.height;
+                    if (i === 0) c.moveTo(screenX, screenY);
+                    else c.lineTo(screenX, screenY);
+                });
+                c.stroke();
+
+                // Draw point
+                c.fillStyle = `hsla(${params.hue}, 70%, 80%, ${point.opacity * 0.8})`;
+                c.beginPath();
+                const screenX = (point.x + 1) * 0.5 * canvas.width;
+                const screenY = (point.y + 1) * 0.5 * canvas.height;
+                c.arc(screenX, screenY, point.size, 0, Math.PI * 2);
+                c.fill();
+            });
+
+            requestAnimationFrame(animate);
+        }
+
+        // Start animation
+        animate();
+    </script>
+</body>
+</html>