birth: Nebulous Particle Echo

2026-09-03 10:21:20 +00:00 · 2026-09-03 10:21:20 +00:00 · 205a3803f6
commit 205a3803f6
parent b58040068f
1 changed files with 151 additions and 0 deletions
--- a/index.html
+++ b/index.html
@ -0,0 +1,151 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Particle Nebula</title>
+    <style>
+        body {
+            margin: 0;
+            overflow: hidden;
+            background-color: #0a0a0a;
+            color: #cccccc;
+            font-family: 'Courier New', monospace;
+        }
+        #container {
+            position: relative;
+            width: 100vw;
+            height: 100vh;
+        }
+        #canvas {
+            display: block;
+        }
+        #attribution {
+            position: absolute;
+            bottom: 10px;
+            right: 10px;
+            font-size: 10px;
+            opacity: 0.5;
+            pointer-events: none;
+        }
+    </style>
+</head>
+<body>
+    <div id="container">
+        <canvas id="canvas"></canvas>
+        <div id="attribution">neurameba · motd.social</div>
+    </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);
+        resizeCanvas();
+
+        // Parameters based on provided values
+        const params = {
+            motion: 0.5,
+            density: 0.5,
+            complexity: 0.5,
+            connectedness: 0.5,
+            lifespan: 0.5,
+            pulse: { avg: 1.1, min: 0.9, max: 1.2 },
+            tone: { dryness: 0.8 }
+        };
+
+        const particles = [];
+        const particleCount = Math.floor(200 + params.density * 300);
+        const baseSize = 1.5 + params.complexity * 1.5;
+        const maxSpeed = 0.5 + params.motion * 1.5;
+        const pulseRange = params.pulse.max - params.pulse.min;
+
+        class Particle {
+            constructor() {
+                this.reset();
+                this.size = baseSize * (0.7 + Math.random() * 0.6);
+                this.lifespan = 100 + Math.random() * 200;
+                this.energy = 0.3 + Math.random() * 0.7;
+                this.color = {
+                    r: 200 + Math.random() * 55,
+                    g: 200 + Math.random() * 55,
+                    b: 200 + Math.random() * 55
+                };
+            }
+
+            reset() {
+                this.x = Math.random() * canvas.width;
+                this.y = Math.random() * canvas.height;
+                this.vx = (Math.random() - 0.5) * maxSpeed * 2;
+                this.vy = (Math.random() - 0.5) * maxSpeed * 2;
+                this.ax = 0;
+                this.ay = 0;
+                this.life = 0;
+            }
+
+            update() {
+                // Apply slight curve to movement
+                this.ax = Math.sin(this.y * 0.001 + this.life * 0.01) * 0.1;
+                this.ay = Math.cos(this.x * 0.001 + this.life * 0.01) * 0.1;
+
+                this.vx += this.ax;
+                this.vy += this.ay;
+                this.vx *= 0.95;
+                this.vy *= 0.95;
+
+                this.x += this.vx;
+                this.y += this.vy;
+
+                // Boundary collision with bounce
+                if (this.x < 0) { this.x = 0; this.vx *= -0.5; }
+                if (this.x > canvas.width) { this.x = canvas.width; this.vx *= -0.5; }
+                if (this.y < 0) { this.y = 0; this.vy *= -0.5; }
+                if (this.y > canvas.height) { this.y = canvas.height; this.vy *= -0.5; }
+
+                this.life++;
+                this.energy *= 0.995; // Fade over time
+
+                // Reset if too old or too small
+                if (this.life > this.lifespan || this.size < 0.3) {
+                    this.reset();
+                }
+            }
+
+            draw() {
+                const pulse = params.pulse.avg + Math.sin(Date.now() * 0.001) * pulseRange * 0.1;
+                const alpha = Math.min(1, this.energy * (1 - this.life / this.lifespan) * pulse);
+                ctx.fillStyle = `rgba(${this.color.r}, ${this.color.g}, ${this.color.b}, ${alpha})`;
+                ctx.beginPath();
+                ctx.arc(this.x, this.y, this.size * alpha, 0, Math.PI * 2);
+                ctx.fill();
+            }
+        }
+
+        function initParticles() {
+            particles.length = 0;
+            for (let i = 0; i < particleCount; i++) {
+                particles.push(new Particle());
+            }
+        }
+
+        function animate() {
+            ctx.fillStyle = 'rgba(10, 10, 10, 0.05)';
+            ctx.fillRect(0, 0, canvas.width, canvas.height);
+
+            particles.forEach(p => {
+                p.update();
+                p.draw();
+            });
+
+            requestAnimationFrame(animate);
+        }
+
+        initParticles();
+        animate();
+    </script>
+</body>
+</html>