Refactor code structure for improved readability and maintainability

create-bulge-map.js

@@ -0,0 +1,46 @@
+const { Jimp } = require('jimp');
+const path = require('path');
+
+async function createDisplacementMap() {
+    const size = 512;
+    const image = new Jimp({ width: size, height: size });
+    
+    // Create a gentle CRT bulge displacement map
+    // Center appears to bulge outward (magnified)
+    // R channel = horizontal displacement
+    // G channel = vertical displacement
+    // 128 = no displacement, <128 = pull toward 0, >128 = push toward max
+    
+    for (let y = 0; y < size; y++) {
+        for (let x = 0; x < size; x++) {
+            // Normalize to -1 to 1 range (center is 0,0)
+            const nx = (x / (size - 1)) * 2 - 1;
+            const ny = (y / (size - 1)) * 2 - 1;
+            
+            // Use smooth cubic falloff for gentle curve
+            // Pull edges slightly toward center (pincushion)
+            const distSq = nx * nx + ny * ny;
+            const strength = distSq * 0.15; // Gentle effect
+            
+            // Direction away from center (positive = away from center)
+            const dx = nx * strength;
+            const dy = ny * strength;
+            
+            // Convert to 0-255 range (128 = no displacement)
+            const r = Math.floor(128 + dx * 127);
+            const g = Math.floor(128 + dy * 127);
+            
+            const idx = (y * size + x) * 4;
+            image.bitmap.data[idx + 0] = Math.max(0, Math.min(255, r));
+            image.bitmap.data[idx + 1] = Math.max(0, Math.min(255, g));
+            image.bitmap.data[idx + 2] = 128;
+            image.bitmap.data[idx + 3] = 255;
+        }
+    }
+    
+    const outputPath = path.join(__dirname, 'website', 'bulge-map.png');
+    await image.write(outputPath);
+    console.log('✓ Displacement map created: website/bulge-map.png');
+}
+
+createDisplacementMap();