birth: Flowing Curiosity Fields

2026-09-02 18:21:21 +00:00 · 2026-09-02 18:21:21 +00:00 · a751d4d73e
commit a751d4d73e
parent aa1a99a1c8
1 changed files with 175 additions and 0 deletions
--- a/index.html
+++ b/index.html
@ -0,0 +1,175 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Flow Field Organism</title>
+    <style>
+        body {
+            margin: 0;
+            overflow: hidden;
+            background: #0a0a0a;
+            color: #f0f0f0;
+            font-family: 'Courier New', monospace;
+        }
+        #attribution {
+            position: absolute;
+            bottom: 10px;
+            right: 10px;
+            font-size: 10px;
+            opacity: 0.6;
+        }
+    </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);
+        resizeCanvas();
+
+        // Flow field settings
+        const FIELD_SIZE = 30;
+        const PARTICLE_COUNT = 150;
+        const PARTICLE_SIZE = 1.2;
+        const TRAIL_LENGTH = 80;
+        const MAX_SPEED = 0.25;
+
+        // Create flow field
+        const field = [];
+        const fieldWidth = Math.ceil(canvas.width / FIELD_SIZE);
+        const fieldHeight = Math.ceil(canvas.height / FIELD_SIZE);
+
+        // Initialize particles
+        const particles = Array(PARTICLE_COUNT).fill().map(() => ({
+            x: Math.random() * canvas.width,
+            y: Math.random() * canvas.height,
+            prevX: 0,
+            prevY: 0,
+            speed: 0.1 + Math.random() * MAX_SPEED,
+            angle: Math.random() * Math.PI * 2,
+            history: [],
+            color: `hsl(${Math.random() * 360}, 30%, 80%)`,
+            size: PARTICLE_SIZE * (0.8 + Math.random() * 0.4)
+        }));
+
+        // Generate Perlin-like noise field
+        function generateField() {
+            for (let y = 0; y < fieldHeight; y++) {
+                field[y] = [];
+                for (let x = 0; x < fieldWidth; x++) {
+                    const nx = x / fieldWidth;
+                    const ny = y / fieldHeight;
+                    const angle = (Math.sin(nx * 10) * Math.cos(ny * 8) * Math.PI * 2) % (Math.PI * 2);
+                    field[y][x] = angle;
+                }
+            }
+        }
+
+        function getFieldAngle(x, y) {
+            const fx = x / FIELD_SIZE;
+            const fy = y / FIELD_SIZE;
+            const x1 = Math.floor(fx);
+            const y1 = Math.floor(fy);
+            const x2 = (x1 + 1) % fieldWidth;
+            const y2 = (y1 + 1) % fieldHeight;
+
+            const sx = fx - x1;
+            const sy = fy - y1;
+
+            const n1 = field[y1][x1];
+            const n2 = field[y1][x2];
+            const ix1 = n1 + sx * (n2 - n1);
+
+            const n3 = field[y2][x1];
+            const n4 = field[y2][x2];
+            const ix2 = n3 + sx * (n4 - n3);
+
+            return ix1 + sy * (ix2 - ix1);
+        }
+
+        function updateParticles() {
+            particles.forEach(p => {
+                // Get field angle
+                const angle = getFieldAngle(p.x, p.y);
+
+                // Calculate attraction to center (dryness)
+                const centerX = canvas.width / 2;
+                const centerY = canvas.height / 2;
+                const dx = centerX - p.x;
+                const dy = centerY - p.y;
+                const dist = Math.sqrt(dx * dx + dy * dy);
+                const force = Math.min(0.05, 1 / (dist + 1));
+
+                // Update particle direction
+                p.angle = angle + (force * 0.3);
+
+                // Move particle
+                p.prevX = p.x;
+                p.prevY = p.y;
+                p.x += Math.cos(p.angle) * p.speed;
+                p.y += Math.sin(p.angle) * p.speed;
+
+                // Wrap around edges
+                if (p.x < 0) p.x = canvas.width;
+                if (p.x > canvas.width) p.x = 0;
+                if (p.y < 0) p.y = canvas.height;
+                if (p.y > canvas.height) p.y = 0;
+
+                // Add to history
+                p.history.push({x: p.x, y: p.y});
+                if (p.history.length > TRAIL_LENGTH) {
+                    p.history.shift();
+                }
+            });
+        }
+
+        function drawParticles() {
+            ctx.globalCompositeOperation = 'lighter';
+
+            particles.forEach(p => {
+                // Draw trail
+                if (p.history.length > 1) {
+                    ctx.beginPath();
+                    ctx.moveTo(p.prevX, p.prevY);
+                    p.history.forEach(point => {
+                        ctx.lineTo(point.x, point.y);
+                    });
+                    ctx.strokeStyle = p.color;
+                    ctx.lineWidth = p.size * 0.8;
+                    ctx.stroke();
+                }
+
+                // Draw particle
+                ctx.beginPath();
+                ctx.arc(p.x, p.y, p.size, 0, Math.PI * 2);
+                ctx.fillStyle = p.color;
+                ctx.fill();
+            });
+
+            ctx.globalCompositeOperation = 'source-over';
+        }
+
+        function animate() {
+            // Clear with fade effect (low energy/dryness)
+            ctx.fillStyle = 'rgba(0, 0, 0, 0.03)';
+            ctx.fillRect(0, 0, canvas.width, canvas.height);
+
+            generateField();
+            updateParticles();
+            drawParticles();
+
+            requestAnimationFrame(animate);
+        }
+
+        animate();
+    </script>
+</body>
+</html>