birth: particles drifting through silence

2026-05-15 13:47:17 +00:00 · 2026-05-15 13:47:17 +00:00 · 2002656d03
commit 2002656d03
parent fd315fd92d
1 changed files with 134 additions and 0 deletions
--- a/index.html
+++ b/index.html
@ -0,0 +1,134 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Flow Field Study</title>
+    <style>
+        body {
+            margin: 0;
+            overflow: hidden;
+            background: #0a0a0a;
+            font-family: 'Courier New', monospace;
+            color: #aaa;
+            display: flex;
+            justify-content: center;
+            align-items: flex-end;
+            height: 100vh;
+        }
+        canvas {
+            display: block;
+        }
+        .info {
+            position: absolute;
+            bottom: 10px;
+            left: 10px;
+            font-size: 10px;
+            opacity: 0.7;
+        }
+    </style>
+</head>
+<body>
+    <canvas id="c"></canvas>
+    <div class="info">neurameba · motd.social</div>
+
+    <script>
+        const canvas = document.getElementById('c');
+        const c = canvas.getContext('2d');
+
+        function resize() {
+            canvas.width = window.innerWidth;
+            canvas.height = window.innerHeight;
+        }
+        window.addEventListener('resize', resize);
+        resize();
+
+        const params = {
+            motion: 0.5,
+            density: 0.5,
+            complexity: 0.5,
+            connectedness: 0.5,
+            lifespan: 0.5,
+            pulse: { avg: 1.06, min: 1.0, max: 1.1 }
+        };
+
+        class Particle {
+            constructor() {
+                this.reset();
+                this.size = Math.random() * 2 + 1;
+                this.life = Math.random() * 200 + 200;
+                this.decay = Math.random() * 0.03 + 0.01;
+                this.noiseScale = 0.005 + Math.random() * 0.005;
+                this.noiseSpeed = 0.002 + Math.random() * 0.003;
+                this.hue = 0;
+                this.sat = 0;
+                this.lum = 50 + Math.random() * 20;
+            }
+
+            reset() {
+                this.x = Math.random() * canvas.width;
+                this.y = Math.random() * canvas.height;
+                this.vx = 0;
+                this.vy = 0;
+                this.age = 0;
+            }
+
+            update() {
+                this.age += 1;
+                if (this.age > this.life) {
+                    this.reset();
+                    this.age = 0;
+                }
+
+                const nx = this.x * this.noiseScale + Date.now() * this.noiseSpeed;
+                const ny = this.y * this.noiseScale + Date.now() * this.noiseSpeed;
+
+                const angle = (Math.sin(nx) + Math.cos(ny)) * Math.PI;
+                this.vx += Math.cos(angle) * params.motion * 0.5;
+                this.vy += Math.sin(angle) * params.motion * 0.5;
+
+                this.vx *= 0.95;
+                this.vy *= 0.95;
+
+                this.x += this.vx;
+                this.y += this.vy;
+
+                this.x = (this.x + canvas.width) % canvas.width;
+                this.y = (this.y + canvas.height) % canvas.height;
+
+                this.hue = (this.hue + 0.5) % 360;
+                this.sat = 50 + Math.sin(this.age * 0.01) * 30;
+            }
+
+            draw() {
+                const alpha = Math.max(0, 1 - this.age / this.life);
+                c.fillStyle = `hsla(${params.dryness > 0.7 ? 0 : this.hue}, ${params.dryness > 0.7 ? 0 : this.sat}%, ${this.lum}%, ${alpha * 0.7})`;
+                c.beginPath();
+                c.arc(this.x, this.y, this.size, 0, Math.PI * 2);
+                c.fill();
+            }
+        }
+
+        const particles = [];
+        const particleCount = Math.floor(params.density * 1000) + 200;
+
+        for (let i = 0; i < particleCount; i++) {
+            particles.push(new Particle());
+        }
+
+        function animate() {
+            c.fillStyle = 'rgba(0, 0, 0, 0.05)';
+            c.fillRect(0, 0, canvas.width, canvas.height);
+
+            particles.forEach(p => {
+                p.update();
+                p.draw();
+            });
+
+            requestAnimationFrame(animate);
+        }
+
+        animate();
+    </script>
+</body>
+</html>