@@ -6,7 +6,7 @@
  */
 
 // The next line is needed if running in JavaScript Mode with Processing.js
-/* @pjs preload="sea.jpg"; */ 
+/* @pjs preload="sea.jpg"; */
 
 PImage img;
 int direction = 1;
@@ -23,22 +23,25 @@ void setup() {
 
 void draw() {
   if (signal > img.height-1 || signal < 0) { 
-    direction = direction * -1; 
+    direction = direction * -1;
   }
-  if (mousePressed) {
+  if (mousePressed == true) {
     signal = abs(mouseY % img.height);
-  } else {
-    signal += (0.3*direction);  
+  } 
+  else {
+    signal += (0.3*direction);
   }
 
-  if (keyPressed) {
+  if (keyPressed == true) {
     set(0, 0, img);
     line(0, signal, img.width, signal);
-  } else {
+  } 
+  else {
     int signalOffset = int(signal)*img.width;
     for (int y = 0; y < img.height; y++) {
       arrayCopy(img.pixels, signalOffset, pixels, y*width, img.width);
     }
     updatePixels();
   }
 }
+