birth: Dry Patterns Drifting

2026-06-24 17:47:18 +00:00 · 2026-06-24 17:47:18 +00:00 · 31c0c220b0
commit 31c0c220b0
parent 43ee79f4a6
1 changed files with 152 additions and 0 deletions
--- a/index.html
+++ b/index.html
@ -0,0 +1,152 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Dry Diffusion</title>
+    <style>
+        body {
+            margin: 0;
+            overflow: hidden;
+            background: #0a0a0a;
+            font-family: 'Courier New', monospace;
+        }
+        #canvas {
+            display: block;
+        }
+        #attribution {
+            position: fixed;
+            bottom: 10px;
+            right: 10px;
+            color: #333;
+            font-size: 10px;
+            pointer-events: none;
+            mix-blend-mode: difference;
+        }
+    </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');
+
+        // Set canvas to full window size
+        function resizeCanvas() {
+            canvas.width = window.innerWidth;
+            canvas.height = window.innerHeight;
+        }
+        window.addEventListener('resize', resizeCanvas);
+        resizeCanvas();
+
+        // Parameters derived from generative art builder
+        const params = {
+            motion: 0.5,
+            density: 0.5,
+            complexity: 0.5,
+            connectedness: 0.5,
+            lifespan: 0.5,
+            pulse: { avg: 1.05, min: 1.0, max: 1.1 },
+            tone: { anger: 0.0, sadness: 0.0, curiosity: 0.1, dryness: 0.9, playfulness: 0.0, tension: 0.0 }
+        };
+
+        // Reaction-diffusion simulation
+        const size = Math.min(100, params.density * 200);
+        const grid = Array.from({ length: size }, () =>
+            Array.from({ length: size }, () => ({
+                a: Math.random() * 0.1 + 0.05,
+                b: Math.random() * 0.1,
+                oldA: 0,
+                oldB: 0
+            }))
+        );
+
+        // Center of the grid
+        const center = Math.floor(size / 2);
+
+        function simulate() {
+            for (let y = 1; y < size - 1; y++) {
+                for (let x = 1; x < size - 1; x++) {
+                    const cell = grid[y][x];
+                    const neighbors = [
+                        grid[y-1][x], grid[y+1][x],
+                        grid[y][x-1], grid[y][x+1],
+                        grid[y-1][x-1], grid[y-1][x+1],
+                        grid[y+1][x-1], grid[y+1][x+1]
+                    ];
+
+                    // Calculate averages
+                    let sumA = 0, sumB = 0;
+                    neighbors.forEach(neighbor => {
+                        sumA += neighbor.a;
+                        sumB += neighbor.b;
+                    });
+                    const avgA = sumA / neighbors.length;
+                    const avgB = sumB / neighbors.length;
+
+                    // Reaction-diffusion equations
+                    const reaction = cell.a * cell.b * cell.b;
+                    const feed = 0.055;
+                    const kill = 0.062;
+                    const diffA = 1.0;
+                    const diffB = 0.5;
+
+                    cell.oldA = cell.a;
+                    cell.oldB = cell.b;
+
+                    cell.a += (diffA * (avgA - cell.a) - reaction + feed * (1 - cell.a)) * params.motion;
+                    cell.b += (diffB * (avgB - cell.b) + reaction - (feed + kill) * cell.b) * params.motion;
+                }
+            }
+
+            // Update grid
+            for (let y = 1; y < size - 1; y++) {
+                for (let x = 1; x < size - 1; x++) {
+                    const cell = grid[y][x];
+                    cell.a = cell.oldA;
+                    cell.b = cell.oldB;
+                }
+            }
+        }
+
+        function draw() {
+            ctx.fillStyle = 'rgba(0, 0, 0, 0.01)';
+            ctx.fillRect(0, 0, canvas.width, canvas.height);
+
+            const scale = Math.min(canvas.width, canvas.height) / size;
+            const offsetX = (canvas.width - size * scale) / 2;
+            const offsetY = (canvas.height - size * scale) / 2;
+
+            for (let y = 1; y < size - 1; y++) {
+                for (let x = 1; x < size - 1; x++) {
+                    const cell = grid[y][x];
+                    const a = Math.pow(cell.a, 0.2 + params.tone.dryness * 0.8);
+                    const b = Math.pow(cell.b, 0.2);
+
+                    // Dryness creates monochrome patterns
+                    const value = Math.min(1, (a - b * 0.5) * 2);
+                    const gray = Math.floor(255 * value);
+
+                    ctx.fillStyle = `rgb(${gray}, ${gray}, ${gray})`;
+                    ctx.fillRect(
+                        offsetX + x * scale,
+                        offsetY + y * scale,
+                        scale * 0.9,
+                        scale * 0.9
+                    );
+                }
+            }
+        }
+
+        function animate() {
+            simulate();
+            draw();
+            requestAnimationFrame(animate);
+        }
+
+        animate();
+    </script>
+</body>
+</html>