fixing the sorting sektch

Author: m9dfukc

sketches/pixel_sort/pixel_sort.pde

@@ -2,61 +2,63 @@ import java.util.Random;
 
 PImage img;
 int y;
-int p; 
+int randomFactor;
 
 void setup() {
   size(640, 360);
   frameRate(120);
+
   img = loadImage("moonwalk.jpg");
+  randomFactor = 10; // vary this to get different results
   y = 0;
-  p = 1;
 }
 
 void draw() {
   background(255);
   PImage buf = createImage(img.width, img.height, RGB);
-  buf = img.copy();
-  
+  // randomize sampling window
+  int p = int(max(random(1, randomFactor), 1)); 
+
   for (int x=0; x < img.width; x += p) { 
     for (int y=0; y < img.height; y++) {
       color[] colors = new color[p];
       for (int i=0; i < p; i++) {
         int index = x+i;
-        colors[i] = img.get(index, y);
-        if (index >= img.width - 1) {
-          break;
+        // wrap over if we reached the boundaries
+        if (index >= img.width-1) {
+          colors[i] = img.get(i, y);
+        } else {
+          colors[i] = img.get(index, y);
         }
       }
-      
+
       shuffleColors(colors);
-      
+
       for (int i=0; i < p; i++) {
         int index = x+i;
         color c = colors[i];
-        buf.set(index, y, c);
-        if (index >= img.width - 1) {
-          break;
+        if (index >= img.width-1) {
+          buf.set(i, y, c);
+        } else {
+          buf.set(index, y, c);
         }
       }
     }
   }
-  
+
   img = buf;
   image(img, 0, 0);
-  p++;
 }
 
 void shuffleColors(color[] array) {
-    int index;
-    Random random = new Random();
-    for (int i = array.length - 1; i > 0; i--)
-    {
-        index = random.nextInt(i + 1);
-        if (index != i)
-        {
-            array[index] ^= array[i];
-            array[i] ^= array[index];
-            array[index] ^= array[i];
-        }
+  int index;
+  Random random = new Random();
+  for (int i = array.length - 1; i > 0; i--) {
+    index = random.nextInt(i + 1);
+    if (index != i) {
+      array[index] ^= array[i];
+      array[i] ^= array[index];
+      array[index] ^= array[i];
     }
+  }
 }