birth: Entropic Choreography of Strange

2026-03-25 21:42:26 +00:00 · 2026-03-25 21:42:26 +00:00 · 0953ef3994
commit 0953ef3994
parent 5b616f22ef
1 changed files with 139 additions and 0 deletions
--- a/index.html
+++ b/index.html
@ -0,0 +1,139 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Neurameba Motion</title>
+    <style>
+        body {
+            margin: 0;
+            overflow: hidden;
+            background: #0a0a0a;
+            color: #ccc;
+            font-family: 'Courier New', monospace;
+        }
+        canvas {
+            display: block;
+        }
+        #attribution {
+            position: fixed;
+            bottom: 10px;
+            right: 10px;
+            font-size: 10px;
+            opacity: 0.5;
+            pointer-events: none;
+        }
+    </style>
+</head>
+<body>
+    <canvas id="canvas"></canvas>
+    <div id="attribution">neurameba · motd.social</div>
+    <script>
+        const canvas = document.getElementById('canvas');
+        const ctx = canvas.getContext('2d');
+
+        function resize() {
+            canvas.width = window.innerWidth;
+            canvas.height = window.innerHeight;
+        }
+        window.addEventListener('resize', resize);
+        resize();
+
+        // Strange attractor parameters (Rössler attractor variation)
+        let params = {
+            a: 0.2,
+            b: 0.2,
+            c: 5.7,
+            dt: 0.05,
+            hue: 0
+        };
+
+        // Particle system-like trails
+        const particles = [];
+        const maxParticles = Math.floor(150 + 500 * 0.5); // density-based
+
+        function init() {
+            for (let i = 0; i < maxParticles; i++) {
+                particles.push({
+                    x: 0,
+                    y: 0,
+                    z: 0,
+                    trail: []
+                });
+            }
+        }
+
+        function attractor(x, y, z) {
+            const a = params.a + (Math.random() * 0.1 - 0.05);
+            const b = params.b + (Math.random() * 0.1 - 0.05);
+            const c = params.c;
+
+            const dx = -y - z;
+            const dy = x + a * y;
+            const dz = b + z * (x - c);
+
+            return { x: x + dx * params.dt, y: y + dy * params.dt, z: z + dz * params.dt };
+        }
+
+        function draw() {
+            ctx.fillStyle = 'rgba(0, 0, 0, 0.05)';
+            ctx.fillRect(0, 0, canvas.width, canvas.height);
+
+            // Update attractor parameters with motion
+            params.a = 0.2 + Math.sin(Date.now() * 0.0005) * 0.1 * 0.5;
+            params.b = 0.2 + Math.cos(Date.now() * 0.0007) * 0.1 * 0.5;
+            params.c = 5.7 + Math.sin(Date.now() * 0.0003) * 0.5 * 0.5;
+
+            // Update particles
+            particles.forEach((p, i) => {
+                const next = attractor(p.x, p.y, p.z);
+                p.x = next.x;
+                p.y = next.y;
+                p.z = next.z;
+
+                // Add to trail
+                p.trail.push({
+                    x: p.x * 20 + canvas.width * 0.5,
+                    y: p.y * 20 + canvas.height * 0.5,
+                    age: 0
+                });
+
+                if (p.trail.length > 50) p.trail.shift();
+            });
+
+            // Draw trails
+            particles.forEach((p, i) => {
+                p.trail.forEach((point, j) => {
+                    const age = point.age / 50;
+                    const size = Math.max(0.1, (1 - age) * (0.5 + 0.5 * Math.random()));
+                    const opacity = (1 - age) * 0.8;
+                    const hue = (params.hue + i * 0.1) % 360;
+
+                    ctx.strokeStyle = `hsla(${hue}, 5%, ${95 - age * 30}%, ${opacity})`;
+                    ctx.lineWidth = size;
+
+                    ctx.beginPath();
+                    ctx.moveTo(point.x, point.y);
+                    if (j > 0) {
+                        const prev = p.trail[j - 1];
+                        ctx.lineTo(prev.x, prev.y);
+                    }
+                    ctx.stroke();
+                    point.age++;
+                });
+            });
+
+            // Update hue slowly
+            params.hue = (params.hue + 0.05) % 360;
+        }
+
+        function animate() {
+            draw();
+            requestAnimationFrame(animate);
+        }
+
+        init();
+        animate();
+    </script>
+</body>
+</html>