Simple reference updates

java/examples/Topics/Advanced Data/HashMapClass/HashMapClass.pde

@@ -3,9 +3,8 @@
  * by Daniel Shiffman.  
  * 
  * This example demonstrates how to use a HashMap to store 
- * a collection of objects referenced by a key.
- * This is much like an array, only instead of accessing elements
- * with a numeric index, we use a String.
+ * a collection of objects referenced by a key. This is much like an array, 
+ * only instead of accessing elements with a numeric index, we use a String.
  * If you are familiar with associative arrays from other languages,
  * this is the same idea.
  *
@@ -23,6 +22,7 @@ int counter;
 
 void setup() {
   size(640, 360);
+  
   words = new HashMap();
 
   // Load file and chop it up
@@ -51,8 +51,7 @@ void draw() {
   } else {
     // Otherwise make a new word
     Word w = new Word(s);
-    // And add to the HashMap
-    // put() takes two arguments, "key" and "value"
+    // And add to the HashMap put() takes two arguments, "key" and "value"
     // The key for us is the String and the value is the Word object
     words.put(s, w);    
   }
@@ -74,7 +73,7 @@ void draw() {
       x += textWidth(w.word + " ");
     }
     
-    // If x gets to the end, move Y
+    // If x gets to the end, move y
     if (x > width) {
       x = 0;
       y -= 100;

java/examples/Topics/Cellular Automata/Conway/Conway.pde

@@ -25,7 +25,9 @@ void setup()
    
   // Set random cells to 'on' 
   for (int i = 0; i < sx * sy * density; i++) { 
-    world[(int)random(sx)][(int)random(sy)][1] = 1; 
+    int x = int(random(sx));
+    int y = int(random(sy));
+    world[x][y][1] = 1; 
   } 
 } 
  

java/examples/Topics/GUI/Button/Button.pde

@@ -35,7 +35,7 @@ void draw() {
   update(mouseX, mouseY);
   background(currentColor);
   
-  if(rectOver) {
+  if (rectOver) {
     fill(rectHighlight);
   } else {
     fill(rectColor);
@@ -43,7 +43,7 @@ void draw() {
   stroke(255);
   rect(rectX, rectY, rectSize, rectSize);
   
-  if(circleOver) {
+  if (circleOver) {
     fill(circleHighlight);
   } else {
     fill(circleColor);
@@ -53,7 +53,7 @@ void draw() {
 }
 
 void update(int x, int y) {
-  if( overCircle(circleX, circleY, circleSize) ) {
+  if ( overCircle(circleX, circleY, circleSize) ) {
     circleOver = true;
     rectOver = false;
   } else if ( overRect(rectX, rectY, rectSize, rectSize) ) {
@@ -65,10 +65,10 @@ void update(int x, int y) {
 }
 
 void mousePressed() {
-  if(circleOver) {
+  if (circleOver) {
     currentColor = circleColor;
   }
-  if(rectOver) {
+  if (rectOver) {
     currentColor = rectColor;
   }
 }
@@ -85,7 +85,7 @@ boolean overRect(int x, int y, int width, int height)  {
 boolean overCircle(int x, int y, int diameter) {
   float disX = x - mouseX;
   float disY = y - mouseY;
-  if(sqrt(sq(disX) + sq(disY)) < diameter/2 ) {
+  if (sqrt(sq(disX) + sq(disY)) < diameter/2 ) {
     return true;
   } else {
     return false;

java/examples/Topics/GUI/Handles/Handles.pde

@@ -5,14 +5,13 @@
  */
  
 Handle[] handles;
-int num;
 
 void setup() {
   size(640, 360);
-  num = height/15;
+  int num = height/15;
   handles = new Handle[num];
   int hsize = 10;
-  for(int i=0; i<num; i++) {
+  for (int i = 0; i < handles.length; i++) {
     handles[i] = new Handle(width/2, 10+i*15, 50-hsize/2, 10, handles);
   }
 }
@@ -20,7 +19,7 @@ void setup() {
 void draw() {
   background(153);
   
-  for(int i=0; i<num; i++) {
+  for (int i = 0; i < handles.length; i++) {
     handles[i].update();
     handles[i].display();
   }
@@ -30,7 +29,7 @@ void draw() {
 }
 
 void mouseReleased()  {
-  for(int i=0; i<num; i++) {
+  for (int i = 0; i < handles.length; i++) {
     handles[i].releaseEvent();
   }
 }
@@ -39,7 +38,7 @@ class Handle {
   
   int x, y;
   int boxx, boxy;
-  int length;
+  int stretch;
   int size;
   boolean over;
   boolean press;
@@ -50,19 +49,19 @@ class Handle {
   Handle(int ix, int iy, int il, int is, Handle[] o) {
     x = ix;
     y = iy;
-    length = il;
+    stretch = il;
     size = is;
-    boxx = x+length - size/2;
+    boxx = x+stretch - size/2;
     boxy = y - size/2;
     others = o;
   }
   
   void update() {
-    boxx = x+length;
+    boxx = x+stretch;
     boxy = y - size/2;
     
-    for(int i=0; i<others.length; i++) {
-      if(others[i].locked == true) {
+    for (int i=0; i<others.length; i++) {
+      if (others[i].locked == true) {
         otherslocked = true;
         break;
       } else {
@@ -70,18 +69,18 @@ class Handle {
       }  
     }
     
-    if(otherslocked == false) {
+    if (otherslocked == false) {
       overEvent();
       pressEvent();
     }
     
-    if(press) {
-      length = lock(mouseX-width/2-size/2, 0, width/2-size-1);
+    if (press) {
+      stretch = lock(mouseX-width/2-size/2, 0, width/2-size-1);
     }
   }
   
   void overEvent() {
-    if(overRect(boxx, boxy, size, size)) {
+    if (overRect(boxx, boxy, size, size)) {
       over = true;
     } else {
       over = false;
@@ -89,7 +88,7 @@ class Handle {
   }
   
   void pressEvent() {
-    if(over && mousePressed || locked) {
+    if (over && mousePressed || locked) {
       press = true;
       locked = true;
     } else {
@@ -102,11 +101,11 @@ class Handle {
   }
   
   void display() {
-    line(x, y, x+length, y);
+    line(x, y, x+stretch, y);
     fill(255);
     stroke(0);
     rect(boxx, boxy, size, size);
-    if(over || press) {
+    if (over || press) {
       line(boxx, boxy, boxx+size, boxy+size);
       line(boxx, boxy+size, boxx+size, boxy);
     }

java/examples/Topics/GUI/Scrollbar/Scrollbar.pde

@@ -10,7 +10,7 @@
 
 
 HScrollbar hs1, hs2;  // Two scrollbars
-PImage img1, img2;  // Two image to load
+PImage img1, img2;  // Two images to load
 
 void setup() {
   size(640, 360);
@@ -74,21 +74,21 @@ class HScrollbar {
   }
 
   void update() {
-    if(overEvent()) {
+    if (overEvent()) {
       over = true;
     } else {
       over = false;
     }
-    if(mousePressed && over) {
+    if (mousePressed && over) {
       locked = true;
     }
-    if(!mousePressed) {
+    if (!mousePressed) {
       locked = false;
     }
-    if(locked) {
+    if (locked) {
       newspos = constrain(mouseX-sheight/2, sposMin, sposMax);
     }
-    if(abs(newspos - spos) > 1) {
+    if (abs(newspos - spos) > 1) {
       spos = spos + (newspos-spos)/loose;
     }
   }
@@ -98,7 +98,7 @@ class HScrollbar {
   }
 
   boolean overEvent() {
-    if(mouseX > xpos && mouseX < xpos+swidth &&
+    if (mouseX > xpos && mouseX < xpos+swidth &&
        mouseY > ypos && mouseY < ypos+sheight) {
       return true;
     } else {
@@ -110,7 +110,7 @@ class HScrollbar {
     noStroke();
     fill(204);
     rect(xpos, ypos, swidth, sheight);
-    if(over || locked) {
+    if (over || locked) {
       fill(0, 0, 0);
     } else {
       fill(102, 102, 102);