birth: Chemical Fragments Bloom

2026-08-22 14:21:19 +00:00 · 2026-08-22 14:21:19 +00:00 · 803bd88f3f
commit 803bd88f3f
parent bf990ef153
1 changed files with 139 additions and 0 deletions
--- a/index.html
+++ b/index.html
@ -0,0 +1,139 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Chemical Bloom</title>
+    <style>
+        body {
+            margin: 0;
+            overflow: hidden;
+            background: #0a0a0a;
+            font-family: monospace;
+            color: #555;
+        }
+        #canvas {
+            display: block;
+        }
+        #attribution {
+            position: absolute;
+            bottom: 10px;
+            right: 10px;
+            font-size: 10px;
+            color: #333;
+            pointer-events: none;
+        }
+    </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();
+
+        // Simulation parameters
+        const params = {
+            feed: 0.055,
+            kill: 0.062,
+            diffA: 1,
+            diffB: 0.5,
+            width: Math.floor(canvas.width / 4),
+            height: Math.floor(canvas.height / 4),
+            scale: 4
+        };
+
+        // Create grid
+        const grid = Array(params.height).fill().map(() =>
+            Array(params.width).fill().map(() => ({
+                a: 1,
+                b: 0
+            }))
+        );
+
+        // Add initial noise
+        for (let y = 0; y < params.height; y++) {
+            for (let x = 0; x < params.width; x++) {
+                grid[y][x].a = 0.5 + Math.random() * 0.5;
+                grid[y][x].b = 0.25 + Math.random() * 0.25;
+            }
+        }
+
+        // Simulation function
+        function update() {
+            const newGrid = grid.map(row => [...row]);
+
+            for (let y = 1; y < params.height - 1; y++) {
+                for (let x = 1; x < params.width - 1; x++) {
+                    const a = grid[y][x].a;
+                    const b = grid[y][x].b;
+
+                    const aNeighbors = (
+                        grid[y][x-1].a + grid[y][x+1].a +
+                        grid[y-1][x].a + grid[y+1][x].a +
+                        grid[y-1][x-1].a * 0.5 + grid[y-1][x+1].a * 0.5 +
+                        grid[y+1][x-1].a * 0.5 + grid[y+1][x+1].a * 0.5
+                    ) / 6;
+
+                    const bNeighbors = (
+                        grid[y][x-1].b + grid[y][x+1].b +
+                        grid[y-1][x].b + grid[y+1][x].b +
+                        grid[y-1][x-1].b * 0.5 + grid[y-1][x+1].b * 0.5 +
+                        grid[y+1][x-1].b * 0.5 + grid[y+1][x+1].b * 0.5
+                    ) / 6;
+
+                    newGrid[y][x].a = a + (
+                        params.diffA * aNeighbors -
+                        a * b * b +
+                        params.feed * (1 - a)
+                    );
+
+                    newGrid[y][x].b = b + (
+                        params.diffB * bNeighbors +
+                        a * b * b -
+                        (params.kill + params.feed) * b
+                    );
+
+                    // Clamp values
+                    newGrid[y][x].a = Math.max(0, Math.min(1, newGrid[y][x].a));
+                    newGrid[y][x].b = Math.max(0, Math.min(1, newGrid[y][x].b));
+                }
+            }
+
+            // Update grid
+            grid.length = 0;
+            grid.push(...newGrid);
+
+            // Draw
+            ctx.fillStyle = 'rgba(0, 0, 0, 0.05)';
+            ctx.fillRect(0, 0, canvas.width, canvas.height);
+
+            for (let y = 0; y < params.height; y++) {
+                for (let x = 0; x < params.width; x++) {
+                    const val = grid[y][x].b;
+                    if (val > 0.1) {
+                        const intensity = Math.min(1, val * 3);
+                        ctx.fillStyle = `rgba(255, 255, 255, ${intensity * 0.8})`;
+                        ctx.fillRect(x * params.scale, y * params.scale, params.scale, params.scale);
+                    }
+                }
+            }
+        }
+
+        // Animation loop
+        function animate() {
+            requestAnimationFrame(animate);
+            update();
+        }
+        animate();
+    </script>
+</body>
+</html>