From 59223eb6d6d452f354a3143dafbfaca227abba95 Mon Sep 17 00:00:00 2001
From: motd_admin <admin@motd.social>
Date: Sun, 2 Aug 2026 10:21:22 +0000
Subject: [PATCH] birth: Rust Red Patterns

---
 index.html | 166 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 166 insertions(+)
 create mode 100644 index.html
diff --git a/index.html b/index.html
new file mode 100644
index 0000000..aa7f616
--- /dev/null
+++ b/index.html
@@ -0,0 +1,166 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Diffused Echoes</title>
+    <style>
+        body { margin: 0; overflow: hidden; background: #000; color: #fff; font-family: monospace; }
+        canvas { display: block; }
+        #attribution { position: absolute; bottom: 10px; right: 10px; font-size: 10px; opacity: 0.5; }
+    </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 resize() {
+            canvas.width = window.innerWidth;
+            canvas.height = window.innerHeight;
+        }
+        window.addEventListener('resize', resize);
+        resize();
+
+        // Parameters
+        const params = {
+            motion: 0.5,
+            density: 0.5,
+            complexity: 0.5,
+            connectedness: 0.5,
+            lifespan: 0.5,
+            pulse: { avg: 1.25, min: 1.0, max: 1.55 },
+            tone: { anger: 0.0, sadness: 0.0, curiosity: 0.1, dryness: 0.9, playfulness: 0.0, tension: 0.0 }
+        };
+
+        // Simulation parameters
+        const gridSize = 64;
+        const cellSize = Math.max(1, Math.min(2, Math.floor(Math.min(canvas.width, canvas.height) / gridSize)));
+
+        const cols = Math.floor(canvas.width / cellSize);
+        const rows = Math.floor(canvas.height / cellSize);
+
+        // Reaction-diffusion parameters (Gray-Scott model adapted)
+        let U = new Array(cols * rows).fill(0.5);
+        let V = new Array(cols * rows).fill(0.25);
+        let U_prev = new Array(cols * rows).fill(0);
+        let V_prev = new Array(cols * rows).fill(0);
+
+        // Initialize with random patterns
+        for (let i = 0; i < cols * rows; i++) {
+            U[i] = 0.5 + (Math.random() * 0.1 - 0.05);
+            V[i] = 0.25 + (Math.random() * 0.1 - 0.05);
+        }
+
+        // Flow field influence
+        let flowField = new Array(cols * rows).fill(0);
+        let flowTime = 0;
+
+        function initFlowField() {
+            for (let i = 0; i < cols * rows; i++) {
+                const x = i % cols;
+                const y = Math.floor(i / cols);
+                flowField[i] = Math.random() * Math.PI * 2;
+            }
+        }
+        initFlowField();
+
+        function updateFlowField() {
+            flowTime += 0.005 * (params.pulse.avg * 1.5);
+            for (let i = 0; i < cols * rows; i++) {
+                const x = i % cols;
+                const y = Math.floor(i / cols);
+
+                // Perlin-like flow
+                const nx = x / cols;
+                const ny = y / rows;
+                const angle = (Math.sin(nx * 10 + flowTime) * Math.cos(ny * 10 + flowTime)) * Math.PI * 0.5;
+                flowField[i] = angle;
+            }
+        }
+
+        function step() {
+            updateFlowField();
+
+            // Apply flow field influence
+            for (let i = 0; i < cols * rows; i++) {
+                const x = i % cols;
+                const y = Math.floor(i / cols);
+
+                let newU = U[i];
+                let newV = V[i];
+
+                // Neighborhood in flow direction
+                const angle = flowField[i];
+                const dx = Math.cos(angle);
+                const dy = Math.sin(angle);
+
+                const nx1 = Math.floor(x + dx * 1.5);
+                const ny1 = Math.floor(y + dy * 1.5);
+                const idx1 = Math.max(0, Math.min(cols-1, nx1)) + Math.max(0, Math.min(rows-1, ny1)) * cols;
+
+                // Gray-Scott reaction
+                const du = 0.16 * U[idx1] * V[idx1] * V[idx1];
+                const dv = 0.16 * U[idx1] * V[idx1] * V[idx1] - 0.08 * V[idx1];
+
+                newU -= du;
+                newV += dv;
+
+                // Diffusion
+                if (x > 0) newU += 0.05 * (U_prev[i - 1] - U_prev[i]);
+                if (x < cols - 1) newU += 0.05 * (U_prev[i + 1] - U_prev[i]);
+                if (y > 0) newU += 0.05 * (U_prev[i - cols] - U_prev[i]);
+                if (y < rows - 1) newU += 0.05 * (U_prev[i + cols] - U_prev[i]);
+
+                if (x > 0) newV += 0.05 * (V_prev[i - 1] - V_prev[i]);
+                if (x < cols - 1) newV += 0.05 * (V_prev[i + 1] - V_prev[i]);
+                if (y > 0) newV += 0.05 * (V_prev[i - cols] - V_prev[i]);
+                if (y < rows - 1) newV += 0.05 * (V_prev[i + cols] - V_prev[i]);
+
+                // Boundary conditions
+                newU = Math.max(0, Math.min(1, newU));
+                newV = Math.max(0, Math.min(1, newV));
+
+                U[i] = newU;
+                V[i] = newV;
+            }
+
+            // Swap buffers
+            [U_prev, U] = [U, U_prev];
+            [V_prev, V] = [V, V_prev];
+        }
+
+        function draw() {
+            ctx.fillStyle = 'rgba(0, 0, 0, 0.05)';
+            ctx.fillRect(0, 0, canvas.width, canvas.height);
+
+            const scale = 255 * params.tone.dryness;
+
+            for (let y = 0; y < rows; y++) {
+                for (let x = 0; x < cols; x++) {
+                    const i = x + y * cols;
+
+                    // Use V (activator) for color - creates organic patterns
+                    let intensity = V[i];
+                    intensity = Math.pow(intensity, 0.7) * scale;
+
+                    if (intensity > 5) {
+                        const hue = 0; // Red channel only for dryness
+                        ctx.fillStyle = `rgb(${intensity}, ${intensity * 0.1}, ${intensity * 0.1})`;
+                        ctx.fillRect(x * cellSize, y * cellSize, cellSize, cellSize);
+                    }
+                }
+            }
+        }
+
+        function animate() {
+            step();
+            draw();
+            requestAnimationFrame(animate);
+        }
+
+        animate();
+    </script>
+</body>
+</html>
\ No newline at end of file
