birth: Teal Nebula Pulse

2026-04-16 09:47:15 +00:00 · 2026-04-16 09:47:15 +00:00 · 308ea263c4
commit 308ea263c4
parent 70448db804
1 changed files with 135 additions and 0 deletions
--- a/index.html
+++ b/index.html
@ -0,0 +1,135 @@
+```html
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Teal Nebula</title>
+    <style>
+        body {
+            margin: 0;
+            overflow: hidden;
+            background-color: #0a0a1a;
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            height: 100vh;
+            font-family: 'Courier New', monospace;
+        }
+        canvas {
+            display: block;
+        }
+        #attribution {
+            position: absolute;
+            bottom: 20px;
+            color: #77aaff;
+            font-size: 10px;
+            text-align: center;
+            width: 100%;
+        }
+    </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();
+
+        // Reaction-diffusion parameters
+        const params = {
+            feed: 0.055,
+            kill: 0.062,
+            diffA: 1.0,
+            diffB: 0.5,
+            scale: 120,
+            pixelSize: 1
+        };
+
+        // Initialize grids
+        let grid = Array(canvas.height).fill().map(() =>
+            Array(canvas.width).fill().map(() => Math.random() * 0.2)
+        );
+
+        let nextGrid = Array(canvas.height).fill().map(() =>
+            Array(canvas.width).fill(0)
+        );
+
+        // Reaction-diffusion simulation
+        function update() {
+            for (let y = 1; y < canvas.height - 1; y++) {
+                for (let x = 1; x < canvas.width - 1; x++) {
+                    const a = grid[y][x];
+                    const b = nextGrid[y][x];
+
+                    // Calculate Laplacian
+                    const aLap = (
+                        grid[y-1][x] + grid[y+1][x] +
+                        grid[y][x-1] + grid[y][x+1] -
+                        4 * a
+                    ) * params.diffA;
+
+                    const bLap = (
+                        nextGrid[y-1][x] + nextGrid[y+1][x] +
+                        nextGrid[y][x-1] + nextGrid[y][x+1] -
+                        4 * b
+                    ) * params.diffB;
+
+                    // Reaction terms
+                    const reaction = a * b * b;
+                    const aNew = a + (aLap * params.feed) - reaction;
+                    const bNew = b + (bLap * params.kill) + reaction;
+
+                    // Clamp and store
+                    nextGrid[y][x] = Math.min(Math.max(bNew, 0), 1);
+                    grid[y][x] = Math.min(Math.max(aNew, 0), 1);
+                }
+            }
+
+            // Swap grids
+            [grid, nextGrid] = [nextGrid, grid];
+        }
+
+        // Drawing function
+        function draw() {
+            ctx.fillStyle = '#0a0a1a';
+            ctx.fillRect(0, 0, canvas.width, canvas.height);
+
+            const imageData = ctx.createImageData(canvas.width, canvas.height);
+            const data = imageData.data;
+
+            for (let y = 0; y < canvas.height; y++) {
+                for (let x = 0; x < canvas.width; x++) {
+                    const val = grid[y][x];
+                    const idx = (y * canvas.width + x) * 4;
+
+                    // Teal color scheme for curiosity
+                    data[idx] = Math.min(255, val * 255 * 2);     // R (low)
+                    data[idx+1] = Math.min(255, val * 255 * 1.8); // G (medium)
+                    data[idx+2] = Math.min(255, val * 255 * 2.2); // B (high)
+                    data[idx+3] = 255;
+                }
+            }
+
+            ctx.putImageData(imageData, 0, 0);
+        }
+
+        // Animation loop
+        function animate() {
+            update();
+            draw();
+            requestAnimationFrame(animate);
+        }
+
+        animate();
+    </script>
+</body>
+</html>
+```