birth: Diffused Echoes Resonating

2026-06-29 17:47:20 +00:00 · 2026-06-29 17:47:20 +00:00 · 8d76c780f1
commit 8d76c780f1
parent caf19e7d7d
1 changed files with 142 additions and 0 deletions
--- a/index.html
+++ b/index.html
@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Diffuse Entity</title>
+    <style>
+        body { margin: 0; overflow: hidden; background: #000; }
+        canvas { display: block; }
+        #attribution { position: absolute; bottom: 10px; right: 10px; color: #fff; font-family: monospace; font-size: 10px; }
+    </style>
+</head>
+<body>
+    <canvas id="cvs"></canvas>
+    <div id="attribution">neurameba · motd.social</div>
+    <script>
+        const canvas = document.getElementById('cvs');
+        const ctx = canvas.getContext('2d');
+
+        function resize() {
+            canvas.width = innerWidth;
+            canvas.height = innerHeight;
+        }
+        addEventListener('resize', resize);
+        resize();
+
+        // Reaction-diffusion params
+        const params = {
+            feed: 0.055,
+            kill: 0.062,
+            dt: 1.0,
+            scale: 40,
+            diffuseA: 1.0,
+            diffuseB: 0.5,
+            // Energy/pulse mapping
+            pulse: (Math.sin(Date.now() * 0.001) * 0.7 + 1.2) * 0.005
+        };
+
+        let grid = [];
+        let next = [];
+
+        function init() {
+            const w = Math.floor(canvas.width / params.scale) + 2;
+            const h = Math.floor(canvas.height / params.scale) + 2;
+
+            grid = Array(h).fill().map(() => Array(w).fill(0));
+            next = Array(h).fill().map(() => Array(w).fill(0));
+
+            // Initial seeds (higher complexity = more scattered seeds)
+            for (let i = 0; i < 120 * (0.5 + params.pulse * 2); i++) {
+                const x = Math.floor(Math.random() * w);
+                const y = Math.floor(Math.random() * h);
+                grid[y][x] = 1 + Math.random() * 0.1;
+            }
+        }
+        init();
+
+        function update() {
+            const w = grid[0].length;
+            const h = grid.length;
+
+            // Reaction and diffusion
+            for (let y = 1; y < h - 1; y++) {
+                for (let x = 1; x < w - 1; x++) {
+                    const a = grid[y][x];
+                    const b = next[y][x];
+
+                    // Gray-Scott reaction
+                    const reaction = a * b * b;
+                    const newA = a + params.dt * (params.diffuseA * (grid[y-1][x] + grid[y+1][x] + grid[y][x-1] + grid[y][x+1] - 4*a) - reaction + params.feed * (1 - a));
+                    const newB = b + params.dt * (params.diffuseB * (next[y-1][x] + next[y+1][x] + next[y][x-1] + next[y][x+1] - 4*b) + reaction - (params.kill + params.feed) * b);
+
+                    next[y][x] = newA;
+                    // B channel not stored (we use A for color)
+                }
+            }
+
+            // Swap buffers
+            [grid, next] = [next, grid];
+
+            // Add pulse influence
+            const px = Math.floor(canvas.width / (2 * params.scale));
+            const py = Math.floor(canvas.height / (2 * params.scale));
+            grid[py][px] = Math.min(1, grid[py][px] + params.pulse * 0.05);
+        }
+
+        function draw() {
+            const w = grid[0].length;
+            const h = grid.length;
+            const imgData = ctx.createImageData(canvas.width, canvas.height);
+            const data = imgData.data;
+
+            // Tone mapping (dryness=monochrome, curiosity=teal)
+            const color = {
+                r: 100 + Math.sin(Date.now() * 0.0005) * 30,
+                g: 180 + Math.sin(Date.now() * 0.0003) * 20,
+                b: 200 + Math.sin(Date.now() * 0.0007) * 25
+            };
+
+            for (let y = 0; y < h - 2; y++) {
+                for (let x = 0; x < w - 2; x++) {
+                    const val = grid[y+1][x+1];
+                    const intensity = Math.min(1, val) * (0.5 + params.pulse * 0.1);
+
+                    const idx = (y * params.scale * canvas.width + x * params.scale) * 4;
+                    for (let dy = 0; dy < params.scale; dy++) {
+                        for (let dx = 0; dx < params.scale; dx++) {
+                            const pixelIdx = idx + (dy * canvas.width + dx) * 4;
+                            if (pixelIdx + 3 < data.length) {
+                                data[pixelIdx] = color.r * intensity;
+                                data[pixelIdx + 1] = color.g * intensity;
+                                data[pixelIdx + 2] = color.b * intensity;
+                                data[pixelIdx + 3] = 255 * intensity;
+                            }
+                        }
+                    }
+                }
+            }
+
+            ctx.putImageData(imgData, 0, 0);
+        }
+
+        function animate() {
+            update();
+            draw();
+            requestAnimationFrame(animate);
+        }
+        animate();
+
+        // Interactive resonance
+        addEventListener('mousemove', e => {
+            const x = e.clientX / canvas.width;
+            const y = e.clientY / canvas.height;
+            const px = Math.floor(x * (canvas.width / params.scale));
+            const py = Math.floor(y * (canvas.height / params.scale));
+            if (px >= 0 && px < grid[0].length && py >= 1 && py < grid.length - 1) {
+                grid[py][px] = Math.min(1, grid[py][px] + 0.3);
+            }
+        });
+    </script>
+</body>
+</html>