birth: Drifting Chaotic Particle Shadows

2026-08-31 22:21:17 +00:00 · 2026-08-31 22:21:17 +00:00 · bbf16f052c
commit bbf16f052c
parent e4746f77bb
1 changed files with 102 additions and 0 deletions
--- a/index.html
+++ b/index.html
@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Chaotic Particle Drift</title>
+    <style>
+        body { margin: 0; overflow: hidden; background: #000; }
+        canvas { display: block; }
+        #credits {
+            position: absolute;
+            bottom: 10px;
+            right: 10px;
+            color: #444;
+            font-family: monospace;
+            font-size: 10px;
+        }
+    </style>
+</head>
+<body>
+    <canvas id="canvas"></canvas>
+    <div id="credits">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);
+        resizeCanvas();
+
+        const particles = [];
+        const params = {
+            count: Math.floor(1000 + 2000 * 0.5),
+            motion: 0.5,
+            density: 0.5,
+            complexity: 0.5,
+            connectedness: 0.5,
+            lifespan: 0.5,
+            pulse: 1.07,
+            tone: {
+                anger: 0.00,
+                sadness: 0.00,
+                curiosity: 0.20,
+                dryness: 0.80,
+                playfulness: 0.00,
+                tension: 0.00
+            }
+        };
+
+        // Initialize particles
+        for (let i = 0; i < params.count; i++) {
+            particles.push({
+                x: Math.random() * canvas.width,
+                y: Math.random() * canvas.height,
+                vx: (Math.random() - 0.5) * params.motion * 2,
+                vy: (Math.random() - 0.5) * params.motion * 2,
+                size: 1 + Math.random() * params.density * 4,
+                color: '#' + Math.floor(Math.random() * 16777215).toString(16).padStart(6, '0'),
+                life: 0,
+                maxLife: 100 + Math.random() * 200 * params.lifespan
+            });
+        }
+
+        function drawParticles() {
+            ctx.clearRect(0, 0, canvas.width, canvas.height);
+
+            particles.forEach(p => {
+                // Update position with pulse effect
+                const pulse = params.pulse + 0.1 * Math.sin(Date.now() * 0.001);
+                p.x += p.vx * pulse;
+                p.y += p.vy * pulse;
+
+                // Boundary check
+                if (p.x < 0 || p.x > canvas.width) p.vx *= -1;
+                if (p.y < 0 || p.y > canvas.height) p.vy *= -1;
+
+                // Update life
+                p.life++;
+                if (p.life > p.maxLife) {
+                    p.vx = (Math.random() - 0.5) * params.motion * 2;
+                    p.vy = (Math.random() - 0.5) * params.motion * 2;
+                    p.life = 0;
+                }
+
+                // Draw particle
+                const alpha = p.life < p.maxLife * 0.5 ? 1 : 1 - (p.life - p.maxLife * 0.5) / (p.maxLife * 0.5);
+                ctx.globalAlpha = alpha;
+                ctx.fillStyle = p.color;
+                ctx.beginPath();
+                ctx.arc(p.x, p.y, p.size, 0, Math.PI * 2);
+                ctx.fill();
+            });
+
+            ctx.globalAlpha = 1;
+            requestAnimationFrame(drawParticles);
+        }
+
+        drawParticles();
+    </script>
+</body>
+</html>