Removing Topics from SVN
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/**
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* ArrayList of objects
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* by Daniel Shiffman.
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*
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* This example demonstrates how to use a Java ArrayList to store
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* a variable number of objects. Items can be added and removed
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* from the ArrayList.
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*
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* Click the mouse to add bouncing balls.
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*/
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ArrayList balls;
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int ballWidth = 48;
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void setup() {
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size(640, 360);
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smooth();
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noStroke();
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// Create an empty ArrayList
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balls = new ArrayList();
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// Start by adding one element
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balls.add(new Ball(width/2, 0, ballWidth));
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}
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void draw() {
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background(255);
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// With an array, we say balls.length, with an ArrayList, we say balls.size()
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// The length of an ArrayList is dynamic
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// Notice how we are looping through the ArrayList backwards
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// This is because we are deleting elements from the list
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for (int i = balls.size()-1; i >= 0; i--) {
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// An ArrayList doesn't know what it is storing so we have to cast the object coming out
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Ball ball = (Ball) balls.get(i);
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ball.move();
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ball.display();
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if (ball.finished()) {
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// Items can be deleted with remove()
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balls.remove(i);
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}
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}
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}
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void mousePressed() {
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// A new ball object is added to the ArrayList (by default to the end)
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balls.add(new Ball(mouseX, mouseY, ballWidth));
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}
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@@ -1,50 +0,0 @@
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// Simple bouncing ball class
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class Ball {
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float x;
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float y;
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float speed;
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float gravity;
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float w;
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float life = 255;
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Ball(float tempX, float tempY, float tempW) {
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x = tempX;
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y = tempY;
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w = tempW;
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speed = 0;
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gravity = 0.1;
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}
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void move() {
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// Add gravity to speed
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speed = speed + gravity;
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// Add speed to y location
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y = y + speed;
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// If square reaches the bottom
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// Reverse speed
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if (y > height) {
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// Dampening
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speed = speed * -0.8;
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y = height;
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}
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}
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boolean finished() {
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// Balls fade out
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life--;
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if (life < 0) {
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return true;
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} else {
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return false;
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}
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}
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void display() {
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// Display the circle
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fill(0,life);
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//stroke(0,life);
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ellipse(x,y,w,w);
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}
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}
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@@ -1,105 +0,0 @@
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/**
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* Listing files in directories and subdirectories
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* by Daniel Shiffman.
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*
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* This example has three functions:<br />
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* 1) List the names of files in a directory<br />
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* 2) List the names along with metadata (size, lastModified)<br />
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* of files in a directory<br />
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* 3) List the names along with metadata (size, lastModified)<br />
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* of files in a directory and all subdirectories (using recursion)
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*/
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void setup() {
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// Path
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String path = sketchPath;
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println("Listing all filenames in a directory: ");
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String[] filenames = listFileNames(path);
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println(filenames);
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println("\nListing info about all files in a directory: ");
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File[] files = listFiles(path);
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for (int i = 0; i < files.length; i++) {
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File f = files[i];
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println("Name: " + f.getName());
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println("Is directory: " + f.isDirectory());
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println("Size: " + f.length());
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String lastModified = new Date(f.lastModified()).toString();
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println("Last Modified: " + lastModified);
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println("-----------------------");
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}
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println("\nListing info about all files in a directory and all subdirectories: ");
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ArrayList allFiles = listFilesRecursive(path);
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for (int i = 0; i < allFiles.size(); i++) {
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File f = (File) allFiles.get(i);
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println("Name: " + f.getName());
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println("Full path: " + f.getAbsolutePath());
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println("Is directory: " + f.isDirectory());
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println("Size: " + f.length());
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String lastModified = new Date(f.lastModified()).toString();
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println("Last Modified: " + lastModified);
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println("-----------------------");
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}
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noLoop();
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}
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// Nothing is drawn in this program and the draw() doesn't loop because
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// of the noLoop() in setup()
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void draw() {
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}
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// This function returns all the files in a directory as an array of Strings
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String[] listFileNames(String dir) {
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File file = new File(dir);
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if (file.isDirectory()) {
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String names[] = file.list();
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return names;
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} else {
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// If it's not a directory
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return null;
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}
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}
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// This function returns all the files in a directory as an array of File objects
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// This is useful if you want more info about the file
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File[] listFiles(String dir) {
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File file = new File(dir);
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if (file.isDirectory()) {
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File[] files = file.listFiles();
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return files;
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} else {
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// If it's not a directory
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return null;
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}
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}
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// Function to get a list ofall files in a directory and all subdirectories
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ArrayList listFilesRecursive(String dir) {
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ArrayList fileList = new ArrayList();
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recurseDir(fileList,dir);
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return fileList;
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}
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// Recursive function to traverse subdirectories
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void recurseDir(ArrayList a, String dir) {
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File file = new File(dir);
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if (file.isDirectory()) {
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// If you want to include directories in the list
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a.add(file);
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File[] subfiles = file.listFiles();
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for (int i = 0; i < subfiles.length; i++) {
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// Call this function on all files in this directory
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recurseDir(a,subfiles[i].getAbsolutePath());
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}
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} else {
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a.add(file);
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}
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}
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@@ -1,89 +0,0 @@
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/**
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* HashMap example
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* by Daniel Shiffman.
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*
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* This example demonstrates how to use a HashMap to store
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* a collection of objects referenced by a key.
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* This is much like an array, only instead of accessing elements
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* with a numeric index, we use a String.
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* If you are familiar with associative arrays from other languages,
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* this is the same idea.
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*
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* This example uses the HashMap to perform a simple concordance
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* http://en.wikipedia.org/wiki/Concordance_(publishing)
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*/
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HashMap words; // HashMap object
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String[] tokens; // Array of all words from input file
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int counter;
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PFont f;
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void setup() {
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size(640, 360);
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words = new HashMap();
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// Load file and chop it up
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String[] lines = loadStrings("dracula.txt");
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String allText = join(lines, " ");
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tokens = splitTokens(allText, " ,.?!:;[]-");
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f = createFont("Georgia", 36, true);
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}
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void draw() {
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background(51);
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fill(255);
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// Look at words one at a time
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String s = tokens[counter];
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counter = (counter + 1) % tokens.length;
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// Is the word in the HashMap
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if (words.containsKey(s)) {
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// Get the word object and increase the count
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// We access objects from a HashMap via its key, the String
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Word w = (Word) words.get(s);
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w.count();
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} else {
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// Otherwise make a new word
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Word w = new Word(s);
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// And add to the HashMap
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// put() takes two arguments, "key" and "value"
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// The key for us is the String and the value is the Word object
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words.put(s, w);
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}
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// Make an iterator to look at all the things in the HashMap
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Iterator i = words.values().iterator();
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// x and y will be used to locate each word
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float x = 0;
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float y = height-10;
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while (i.hasNext()) {
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// Look at each word
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Word w = (Word) i.next();
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// Only display words that appear 3 times
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if (w.count > 3) {
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// The size is the count
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int fsize = constrain(w.count, 0, 100);
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textFont(f, fsize);
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text(w.word, x, y);
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// Move along the x-axis
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x += textWidth(w.word + " ");
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}
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// If x gets to the end, move Y
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if (x > width) {
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x = 0;
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y -= 100;
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// If y gets to the end, we're done
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if (y < 0) {
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break;
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}
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}
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}
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}
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@@ -1,15 +0,0 @@
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class Word {
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int count;
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String word;
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Word(String s) {
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word = s;
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count = 1;
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}
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void count() {
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count++;
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}
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}
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@@ -1,41 +0,0 @@
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/**
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* Animated Sprite (Shifty + Teddy)
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* by James Patterson.
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*
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* Press the mouse button to change animations.
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* Demonstrates loading, displaying, and animating GIF images.
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* It would be easy to write a program to display
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* animated GIFs, but would not allow as much control over
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* the display sequence and rate of display.
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*/
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Animation animation1, animation2;
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float xpos;
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float ypos;
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float drag = 30.0;
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void setup() {
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size(640, 360);
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background(255, 204, 0);
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frameRate(24);
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animation1 = new Animation("PT_Shifty_", 38);
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animation2 = new Animation("PT_Teddy_", 60);
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ypos = height * 0.25;
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}
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void draw() {
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float difx = mouseX - xpos;
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if (abs(difx) > 1.0) {
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xpos = xpos + difx/drag;
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||||
xpos = constrain(xpos, 0, width);
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}
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|
||||
// Display the sprite at the position xpos, ypos
|
||||
if (mousePressed) {
|
||||
background(153, 153, 0);
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animation1.display(xpos-animation1.getWidth()/2, ypos);
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||||
} else {
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background(255, 204, 0);
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animation2.display(xpos-animation1.getWidth()/2, ypos);
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}
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}
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@@ -1,27 +0,0 @@
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// Class for animating a sequence of GIFs
|
||||
|
||||
class Animation {
|
||||
PImage[] images;
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||||
int imageCount;
|
||||
int frame;
|
||||
|
||||
Animation(String imagePrefix, int count) {
|
||||
imageCount = count;
|
||||
images = new PImage[imageCount];
|
||||
|
||||
for (int i = 0; i < imageCount; i++) {
|
||||
// Use nf() to number format 'i' into four digits
|
||||
String filename = imagePrefix + nf(i, 4) + ".gif";
|
||||
images[i] = loadImage(filename);
|
||||
}
|
||||
}
|
||||
|
||||
void display(float xpos, float ypos) {
|
||||
frame = (frame+1) % imageCount;
|
||||
image(images[frame], xpos, ypos);
|
||||
}
|
||||
|
||||
int getWidth() {
|
||||
return images[0].width;
|
||||
}
|
||||
}
|
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|
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