birth: Fractured Attractor Dreaming

2026-06-29 09:47:18 +00:00 · 2026-06-29 09:47:18 +00:00 · 970f137321
commit 970f137321
parent aadf531eb9
1 changed files with 146 additions and 0 deletions
--- a/index.html
+++ b/index.html
@ -0,0 +1,146 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Strange Attractor</title>
+    <style>
+        body {
+            margin: 0;
+            overflow: hidden;
+            background: #0a0a0a;
+            color: #aaa;
+            font-family: monospace;
+            font-size: 10px;
+        }
+        canvas {
+            display: block;
+        }
+        #attribution {
+            position: absolute;
+            bottom: 10px;
+            left: 10px;
+            font-family: monospace;
+            font-size: 10px;
+            color: #555;
+            text-shadow: 0 0 2px rgba(0,0,0,0.5);
+        }
+    </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 resizeCanvas() {
+            canvas.width = window.innerWidth;
+            canvas.height = window.innerHeight;
+        }
+
+        window.addEventListener('resize', resizeCanvas, false);
+        resizeCanvas();
+
+        // Strange attractor parameters (Lorenz system variant)
+        const params = {
+            a: 10,
+            b: 28,
+            c: 8/3,
+            dt: 0.01,
+            scale: 5,
+            alpha: 0.5,
+            hue: 180,
+            maxPoints: 50000
+        };
+
+        // State variables
+        let points = [];
+        let time = 0;
+        let frameCount = 0;
+
+        function lorenz(x, y, z) {
+            const dx = params.a * (y - x);
+            const dy = x * (params.b - z) - y;
+            const dz = x * y - params.c * z;
+            return { x: x + params.dt * dx, y: y + params.dt * dy, z: z + params.dt * dz };
+        }
+
+        function updateAttractor() {
+            if (points.length > params.maxPoints) {
+                points.shift();
+            }
+
+            let x = Math.sin(time * 0.3) * 10;
+            let y = Math.cos(time * 0.2) * 10;
+            let z = time * 0.1;
+
+            for (let i = 0; i < 5; i++) {
+                const next = lorenz(x, y, z);
+                x = next.x;
+                y = next.y;
+                z = next.z;
+
+                // Add some controlled randomization based on motion parameter
+                x += (Math.random() * 2 - 1) * params.motion * 0.2;
+                y += (Math.random() * 2 - 1) * params.motion * 0.2;
+                z += (Math.random() * 2 - 1) * params.motion * 0.2;
+
+                const scale = params.scale * (0.8 + 0.4 * params.density);
+                const px = canvas.width/2 + x * scale;
+                const py = canvas.height/2 + y * scale;
+                const pz = z * 0.2;
+
+                points.push({
+                    x: px,
+                    y: py,
+                    z: pz,
+                    size: 1 + params.density * 0.5,
+                    opacity: 0.1 + params.alpha * 0.9
+                });
+            }
+
+            time += params.dt;
+        }
+
+        function drawAttractor() {
+            ctx.fillStyle = 'rgba(0, 0, 0, 0.05)';
+            ctx.fillRect(0, 0, canvas.width, canvas.height);
+
+            const gradient = ctx.createLinearGradient(0, 0, canvas.width, canvas.height);
+            gradient.addColorStop(0, `hsla(${params.hue}, 50%, 30%, ${params.alpha})`);
+            gradient.addColorStop(1, `hsla(${params.hue + 20}, 50%, 80%, ${params.alpha * 0.7})`);
+
+            ctx.strokeStyle = gradient;
+            ctx.lineWidth = 0.5 + params.complexity * 0.5;
+
+            ctx.beginPath();
+            for (let i = 1; i < points.length; i++) {
+                const p1 = points[i-1];
+                const p2 = points[i];
+                const alpha = p1.opacity * Math.min(1, 1000 / points.length);
+                ctx.strokeStyle = `hsla(${params.hue}, 50%, ${60 + p1.z * 10}%, ${alpha})`;
+
+                ctx.moveTo(p1.x, p1.y);
+                ctx.lineTo(p2.x, p2.y);
+            }
+            ctx.stroke();
+        }
+
+        function animate() {
+            updateAttractor();
+            drawAttractor();
+            frameCount++;
+            requestAnimationFrame(animate);
+        }
+
+        // Initialize with some randomness
+        params.motion = 0.5;
+        params.density = 0.5;
+        params.complexity = 0.5;
+        params.alpha = 0.6;
+
+        animate();
+    </script>
+</body>
+</html>