/* -*- mode: java; c-basic-offset: 2; indent-tabs-mode: nil -*- */

/*
  Part of the Processing project - http://processing.org

  Copyright (c) 2012-15 The Processing Foundation
  Copyright (c) 2004-12 Ben Fry and Casey Reas
  Copyright (c) 2001-04 Massachusetts Institute of Technology

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation, version 2.1.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General
  Public License along with this library; if not, write to the
  Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  Boston, MA  02111-1307  USA
*/

package processing.core;

// dummy object for backwards compatibility, plus the select methods
import java.awt.Frame;

// before calling settings() to get displayWidth/Height
import java.awt.DisplayMode;
// handleSettings() and displayDensity()
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
// used to present the fullScreen() warning about Spaces on OS X
import javax.swing.JOptionPane;

// inside runSketch() to warn users about headless
import java.awt.HeadlessException;
import java.awt.Toolkit;

// used by loadImage()
import java.awt.Image;
import java.awt.color.ColorSpace;
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
// allows us to remove our own MediaTracker code
import javax.swing.ImageIcon;

// used by selectInput(), selectOutput(), selectFolder()
import java.awt.EventQueue;
import java.awt.FileDialog;
import javax.swing.JFileChooser;

// set the look and feel, if specified
import javax.swing.UIManager;

// used by link()
import java.awt.Desktop;

// used by desktopFile() method
import javax.swing.filechooser.FileSystemView;

// loadXML() error handling
import javax.xml.parsers.ParserConfigurationException;

import org.xml.sax.SAXException;

import java.io.*;
import java.lang.reflect.*;
import java.net.*;
import java.nio.charset.StandardCharsets;
import java.text.*;
import java.util.*;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadFactory;
import java.util.regex.*;
import java.util.zip.*;

import processing.data.*;
import processing.event.*;
import processing.opengl.*;


/**
 * Base class for all sketches that use processing.core.
 * <p/>
 * The <A HREF="https://github.com/processing/processing/wiki/Window-Size-and-Full-Screen">
 * Window Size and Full Screen</A> page on the Wiki has useful information
 * about sizing, multiple displays, full screen, etc.
 * <p/>
 * Processing uses active mode rendering. All animation tasks happen on the
 * "Processing Animation Thread". The setup() and draw() methods are handled
 * by that thread, and events (like mouse movement and key presses, which are
 * fired by the event dispatch thread or EDT) are queued to be safely handled
 * at the end of draw().
 * <p/>
 * Starting with 3.0a6, blit operations are on the EDT, so as not to cause
 * GUI problems with Swing and AWT. In the case of the default renderer, the
 * sketch renders to an offscreen image, then the EDT is asked to bring that
 * image to the screen.
 * <p/>
 * For code that needs to run on the EDT, use EventQueue.invokeLater(). When
 * doing so, be careful to synchronize between that code and the Processing
 * animation thread. That is, you can't call Processing methods from the EDT
 * or at any random time from another thread. Use of a callback function or
 * the registerXxx() methods in PApplet can help ensure that your code doesn't
 * do something naughty.
 * <p/>
 * As of Processing 3.0, we have removed Applet as the base class for PApplet.
 * This means that we can remove lots of legacy code, however one downside is
 * that it's no longer possible (without extra code) to embed a PApplet into
 * another Java application.
 * <p/>
 * As of Processing 3.0, we have discontinued support for versions of Java
 * prior to 1.8. We don't have enough people to support it, and for a
 * project of our (tiny) size, we should be focusing on the future, rather
 * than working around legacy Java code.
 */
public class PApplet implements PConstants {
  /** Full name of the Java version (i.e. 1.5.0_11). */
  static public final String javaVersionName =
    System.getProperty("java.version");

  static public final int javaPlatform;
  static {
    String version = javaVersionName;
    if (javaVersionName.startsWith("1.")) {
      version = version.substring(2);
      javaPlatform = parseInt(version.substring(0, version.indexOf('.')));
    } else {
      // Remove -xxx and .yyy from java.version (@see JEP-223)
      javaPlatform = parseInt(version.replaceAll("-.*","").replaceAll("\\..*",""));
    }
  }

  /**
   * Do not use; javaPlatform or javaVersionName are better options.
   * For instance, javaPlatform is useful when you need a number for
   * comparison, i.e. "if (javaPlatform >= 9)".
   * @deprecated
   */
  @Deprecated
  public static final float javaVersion = 1 + javaPlatform / 10f;

  /**
   * Current platform in use, one of the
   * PConstants WINDOWS, MACOSX, MACOS9, LINUX or OTHER.
   */
  static public int platform;

  static {
    String osname = System.getProperty("os.name");

    if (osname.indexOf("Mac") != -1) {
      platform = MACOSX;

    } else if (osname.indexOf("Windows") != -1) {
      platform = WINDOWS;

    } else if (osname.equals("Linux")) {  // true for the ibm vm
      platform = LINUX;

    } else {
      platform = OTHER;
    }
  }

  /**
   * Whether to use native (AWT) dialogs for selectInput and selectOutput.
   * The native dialogs on some platforms can be ugly, buggy, or missing
   * features. For 3.3.5, this defaults to true on all platforms.
   */
  static public boolean useNativeSelect = true;

  /** The PGraphics renderer associated with this PApplet */
  public PGraphics g;

  /**
   * ( begin auto-generated from displayWidth.xml )
   *
   * System variable which stores the width of the computer screen. For
   * example, if the current screen resolution is 1024x768,
   * <b>displayWidth</b> is 1024 and <b>displayHeight</b> is 768. These
   * dimensions are useful when exporting full-screen applications.
   * <br /><br />
   * To ensure that the sketch takes over the entire screen, use "Present"
   * instead of "Run". Otherwise the window will still have a frame border
   * around it and not be placed in the upper corner of the screen. On Mac OS
   * X, the menu bar will remain present unless "Present" mode is used.
   *
   * ( end auto-generated )
   */
  public int displayWidth;

  /**
   * ( begin auto-generated from displayHeight.xml )
   *
   * System variable that stores the height of the computer screen. For
   * example, if the current screen resolution is 1024x768,
   * <b>displayWidth</b> is 1024 and <b>displayHeight</b> is 768. These
   * dimensions are useful when exporting full-screen applications.
   * <br /><br />
   * To ensure that the sketch takes over the entire screen, use "Present"
   * instead of "Run". Otherwise the window will still have a frame border
   * around it and not be placed in the upper corner of the screen. On Mac OS
   * X, the menu bar will remain present unless "Present" mode is used.
   *
   * ( end auto-generated )
   */
  public int displayHeight;

  /** A leech graphics object that is echoing all events. */
  public PGraphics recorder;

  /**
   * Command line options passed in from main().
   * This does not include the arguments passed in to PApplet itself.
   * @see PApplet#main
   */
  public String[] args;

  /**
   * Path to sketch folder. Previously undocumented, made private in 3.0a5
   * so that people use the sketchPath() method and it's inited properly.
   * Call sketchPath() once to set the default.
   */
  private String sketchPath;
//  public String sketchPath;

  static final boolean DEBUG = false;
//  static final boolean DEBUG = true;

  /** Default width and height for sketch when not specified */
  static public final int DEFAULT_WIDTH = 100;
  static public final int DEFAULT_HEIGHT = 100;

//  /**
//   * Exception thrown when size() is called the first time.
//   * <p>
//   * This is used internally so that setup() is forced to run twice
//   * when the renderer is changed. This is the only way for us to handle
//   * invoking the new renderer while also in the midst of rendering.
//   */
//  static public class RendererChangeException extends RuntimeException { }

  /**
   * true if no size() command has been executed. This is used to wait until
   * a size has been set before placing in the window and showing it.
   */
//  public boolean defaultSize;

//  /** Storage for the current renderer size to avoid re-allocation. */
//  Dimension currentSize = new Dimension();

  /**
   * ( begin auto-generated from pixels.xml )
   *
   * Array containing the values for all the pixels in the display window.
   * These values are of the color datatype. This array is the size of the
   * display window. For example, if the image is 100x100 pixels, there will
   * be 10000 values and if the window is 200x300 pixels, there will be 60000
   * values. The <b>index</b> value defines the position of a value within
   * the array. For example, the statement <b>color b = pixels[230]</b> will
   * set the variable <b>b</b> to be equal to the value at that location in
   * the array.<br />
   * <br />
   * Before accessing this array, the data must loaded with the
   * <b>loadPixels()</b> function. After the array data has been modified,
   * the <b>updatePixels()</b> function must be run to update the changes.
   * Without <b>loadPixels()</b>, running the code may (or will in future
   * releases) result in a NullPointerException.
   *
   * ( end auto-generated )
   *
   * @webref image:pixels
   * @see PApplet#loadPixels()
   * @see PApplet#updatePixels()
   * @see PApplet#get(int, int, int, int)
   * @see PApplet#set(int, int, int)
   * @see PImage
   */
  public int[] pixels;

  /**
   * ( begin auto-generated from width.xml )
   *
   * System variable which stores the width of the display window. This value
   * is set by the first parameter of the <b>size()</b> function. For
   * example, the function call <b>size(320, 240)</b> sets the <b>width</b>
   * variable to the value 320. The value of <b>width</b> is zero until
   * <b>size()</b> is called.
   *
   * ( end auto-generated )
   * @webref environment
   * @see PApplet#height
   * @see PApplet#size(int, int)
   */
  public int width = DEFAULT_WIDTH;

  /**
   * ( begin auto-generated from height.xml )
   *
   * System variable which stores the height of the display window. This
   * value is set by the second parameter of the <b>size()</b> function. For
   * example, the function call <b>size(320, 240)</b> sets the <b>height</b>
   * variable to the value 240. The value of <b>height</b> is zero until
   * <b>size()</b> is called.
   *
   * ( end auto-generated )
   *
   * @webref environment
   * @see PApplet#width
   * @see PApplet#size(int, int)
   */
  public int height = DEFAULT_HEIGHT;

  /**
   * ( begin auto-generated from pixelWidth.xml )
   *
   * When <b>pixelDensity(2)</d> is used to make use of a high resolution
   * display (called a Retina display on OS X or high-dpi on Windows and
   * Linux), the width and height of the sketch do not change, but the
   * number of pixels is doubled. As a result, all operations that use pixels
   * (like <b>loadPixels()</b>, <b>get()</b>, <b>set()</b>, etc.) happen
   * in this doubled space. As a convenience, the variables <b>pixelWidth</b>
   * and <b>pixelHeight<b> hold the actual width and height of the sketch
   * in pixels. This is useful for any sketch that uses the <b>pixels[]</b>
   * array, for instance, because the number of elements in the array will
   * be <b>pixelWidth*pixelHeight</b>, not <b>width*height</b>.
   *
   * ( end auto-generated )
   *
   * @webref environment
   * @see PApplet#pixelHeight
   * @see #pixelDensity(int)
   * @see #displayDensity()
   */
  public int pixelWidth;


  /**
   * ( begin auto-generated from pixelHeight.xml )
   *
   * When <b>pixelDensity(2)</d> is used to make use of a high resolution
   * display (called a Retina display on OS X or high-dpi on Windows and
   * Linux), the width and height of the sketch do not change, but the
   * number of pixels is doubled. As a result, all operations that use pixels
   * (like <b>loadPixels()</b>, <b>get()</b>, <b>set()</b>, etc.) happen
   * in this doubled space. As a convenience, the variables <b>pixelWidth</b>
   * and <b>pixelHeight<b> hold the actual width and height of the sketch
   * in pixels. This is useful for any sketch that uses the <b>pixels[]</b>
   * array, for instance, because the number of elements in the array will
   * be <b>pixelWidth*pixelHeight</b>, not <b>width*height</b>.
   *
   * ( end auto-generated )
   *
   * @webref environment
   * @see PApplet#pixelWidth
   * @see #pixelDensity(int)
   * @see #displayDensity()
   */
  public int pixelHeight;

  /**
   * Keeps track of ENABLE_KEY_REPEAT hint
   */
  protected boolean keyRepeatEnabled = false;

  /**
   * ( begin auto-generated from mouseX.xml )
   *
   * The system variable <b>mouseX</b> always contains the current horizontal
   * coordinate of the mouse.
   *
   * ( end auto-generated )
   * @webref input:mouse
   * @see PApplet#mouseY
   * @see PApplet#pmouseX
   * @see PApplet#pmouseY
   * @see PApplet#mousePressed
   * @see PApplet#mousePressed()
   * @see PApplet#mouseReleased()
   * @see PApplet#mouseClicked()
   * @see PApplet#mouseMoved()
   * @see PApplet#mouseDragged()
   * @see PApplet#mouseButton
   * @see PApplet#mouseWheel(MouseEvent)
   *
   *
   */
  public int mouseX;

  /**
   * ( begin auto-generated from mouseY.xml )
   *
   * The system variable <b>mouseY</b> always contains the current vertical
   * coordinate of the mouse.
   *
   * ( end auto-generated )
   * @webref input:mouse
   * @see PApplet#mouseX
   * @see PApplet#pmouseX
   * @see PApplet#pmouseY
   * @see PApplet#mousePressed
   * @see PApplet#mousePressed()
   * @see PApplet#mouseReleased()
   * @see PApplet#mouseClicked()
   * @see PApplet#mouseMoved()
   * @see PApplet#mouseDragged()
   * @see PApplet#mouseButton
   * @see PApplet#mouseWheel(MouseEvent)
   *
   */
  public int mouseY;

  /**
   * ( begin auto-generated from pmouseX.xml )
   *
   * The system variable <b>pmouseX</b> always contains the horizontal
   * position of the mouse in the frame previous to the current frame.<br />
   * <br />
   * You may find that <b>pmouseX</b> and <b>pmouseY</b> have different
   * values inside <b>draw()</b> and inside events like <b>mousePressed()</b>
   * and <b>mouseMoved()</b>. This is because they're used for different
   * roles, so don't mix them. Inside <b>draw()</b>, <b>pmouseX</b> and
   * <b>pmouseY</b> update only once per frame (once per trip through your
   * <b>draw()</b>). But, inside mouse events, they update each time the
   * event is called. If they weren't separated, then the mouse would be read
   * only once per frame, making response choppy. If the mouse variables were
   * always updated multiple times per frame, using <NOBR><b>line(pmouseX,
   * pmouseY, mouseX, mouseY)</b></NOBR> inside <b>draw()</b> would have lots
   * of gaps, because <b>pmouseX</b> may have changed several times in
   * between the calls to <b>line()</b>. Use <b>pmouseX</b> and
   * <b>pmouseY</b> inside <b>draw()</b> if you want values relative to the
   * previous frame. Use <b>pmouseX</b> and <b>pmouseY</b> inside the mouse
   * functions if you want continuous response.
   *
   * ( end auto-generated )
   * @webref input:mouse
   * @see PApplet#mouseX
   * @see PApplet#mouseY
   * @see PApplet#pmouseY
   * @see PApplet#mousePressed
   * @see PApplet#mousePressed()
   * @see PApplet#mouseReleased()
   * @see PApplet#mouseClicked()
   * @see PApplet#mouseMoved()
   * @see PApplet#mouseDragged()
   * @see PApplet#mouseButton
   * @see PApplet#mouseWheel(MouseEvent)
   */
  public int pmouseX;

  /**
   * ( begin auto-generated from pmouseY.xml )
   *
   * The system variable <b>pmouseY</b> always contains the vertical position
   * of the mouse in the frame previous to the current frame. More detailed
   * information about how <b>pmouseY</b> is updated inside of <b>draw()</b>
   * and mouse events is explained in the reference for <b>pmouseX</b>.
   *
   * ( end auto-generated )
   * @webref input:mouse
   * @see PApplet#mouseX
   * @see PApplet#mouseY
   * @see PApplet#pmouseX
   * @see PApplet#mousePressed
   * @see PApplet#mousePressed()
   * @see PApplet#mouseReleased()
   * @see PApplet#mouseClicked()
   * @see PApplet#mouseMoved()
   * @see PApplet#mouseDragged()
   * @see PApplet#mouseButton
   * @see PApplet#mouseWheel(MouseEvent)
   */
  public int pmouseY;

  /**
   * Previous mouseX/Y for the draw loop, separated out because this is
   * separate from the pmouseX/Y when inside the mouse event handlers.
   * See emouseX/Y for an explanation.
   */
  protected int dmouseX, dmouseY;

  /**
   * The pmouseX/Y for the event handlers (mousePressed(), mouseDragged() etc)
   * these are different because mouse events are queued to the end of
   * draw, so the previous position has to be updated on each event,
   * as opposed to the pmouseX/Y that's used inside draw, which is expected
   * to be updated once per trip through draw().
   */
  protected int emouseX, emouseY;

  /**
   * Used to set pmouseX/Y to mouseX/Y the first time mouseX/Y are used,
   * otherwise pmouseX/Y are always zero, causing a nasty jump.
   * <p>
   * Just using (frameCount == 0) won't work since mouseXxxxx()
   * may not be called until a couple frames into things.
   * <p>
   * @deprecated Please refrain from using this variable, it will be removed
   * from future releases of Processing because it cannot be used consistently
   * across platforms and input methods.
   */
  @Deprecated
  public boolean firstMouse = true;

  /**
   * ( begin auto-generated from mouseButton.xml )
   *
   * Processing automatically tracks if the mouse button is pressed and which
   * button is pressed. The value of the system variable <b>mouseButton</b>
   * is either <b>LEFT</b>, <b>RIGHT</b>, or <b>CENTER</b> depending on which
   * button is pressed.
   *
   * ( end auto-generated )
   *
   * <h3>Advanced:</h3>
   *
   * If running on Mac OS, a ctrl-click will be interpreted as the right-hand
   * mouse button (unlike Java, which reports it as the left mouse).
   * @webref input:mouse
   * @see PApplet#mouseX
   * @see PApplet#mouseY
   * @see PApplet#pmouseX
   * @see PApplet#pmouseY
   * @see PApplet#mousePressed
   * @see PApplet#mousePressed()
   * @see PApplet#mouseReleased()
   * @see PApplet#mouseClicked()
   * @see PApplet#mouseMoved()
   * @see PApplet#mouseDragged()
   * @see PApplet#mouseWheel(MouseEvent)
   */
  public int mouseButton;

  /**
   * ( begin auto-generated from mousePressed_var.xml )
   *
   * Variable storing if a mouse button is pressed. The value of the system
   * variable <b>mousePressed</b> is true if a mouse button is pressed and
   * false if a button is not pressed.
   *
   * ( end auto-generated )
   * @webref input:mouse
   * @see PApplet#mouseX
   * @see PApplet#mouseY
   * @see PApplet#pmouseX
   * @see PApplet#pmouseY
   * @see PApplet#mousePressed()
   * @see PApplet#mouseReleased()
   * @see PApplet#mouseClicked()
   * @see PApplet#mouseMoved()
   * @see PApplet#mouseDragged()
   * @see PApplet#mouseButton
   * @see PApplet#mouseWheel(MouseEvent)
   */
  public boolean mousePressed;

  // MACOSX: CTRL + Left Mouse is converted to Right Mouse. This boolean keeps
  // track of whether the conversion happened on PRESS, because we should report
  // the same button during DRAG and on RELEASE, even though CTRL might have
  // been released already. Otherwise the events are inconsistent, e.g.
  // Left Pressed - Left Drag - CTRL Pressed - Right Drag - Right Released.
  // See: https://github.com/processing/processing/issues/5672
  private boolean macosxLeftButtonWithCtrlPressed;


  /** @deprecated Use a mouse event handler that passes an event instead. */
  @Deprecated
  public MouseEvent mouseEvent;

  /**
   * ( begin auto-generated from key.xml )
   *
   * The system variable <b>key</b> always contains the value of the most
   * recent key on the keyboard that was used (either pressed or released).
   * <br/> <br/>
   * For non-ASCII keys, use the <b>keyCode</b> variable. The keys included
   * in the ASCII specification (BACKSPACE, TAB, ENTER, RETURN, ESC, and
   * DELETE) do not require checking to see if they key is coded, and you
   * should simply use the <b>key</b> variable instead of <b>keyCode</b> If
   * you're making cross-platform projects, note that the ENTER key is
   * commonly used on PCs and Unix and the RETURN key is used instead on
   * Macintosh. Check for both ENTER and RETURN to make sure your program
   * will work for all platforms.
   *
   * ( end auto-generated )
   *
   * <h3>Advanced</h3>
   *
   * Last key pressed.
   * <p>
   * If it's a coded key, i.e. UP/DOWN/CTRL/SHIFT/ALT,
   * this will be set to CODED (0xffff or 65535).
   *
   * @webref input:keyboard
   * @see PApplet#keyCode
   * @see PApplet#keyPressed
   * @see PApplet#keyPressed()
   * @see PApplet#keyReleased()
   */
  public char key;

  /**
   * ( begin auto-generated from keyCode.xml )
   *
   * The variable <b>keyCode</b> is used to detect special keys such as the
   * UP, DOWN, LEFT, RIGHT arrow keys and ALT, CONTROL, SHIFT. When checking
   * for these keys, it's first necessary to check and see if the key is
   * coded. This is done with the conditional "if (key == CODED)" as shown in
   * the example.
   * <br/> <br/>
   * The keys included in the ASCII specification (BACKSPACE, TAB, ENTER,
   * RETURN, ESC, and DELETE) do not require checking to see if they key is
   * coded, and you should simply use the <b>key</b> variable instead of
   * <b>keyCode</b> If you're making cross-platform projects, note that the
   * ENTER key is commonly used on PCs and Unix and the RETURN key is used
   * instead on Macintosh. Check for both ENTER and RETURN to make sure your
   * program will work for all platforms.
   * <br/> <br/>
   * For users familiar with Java, the values for UP and DOWN are simply
   * shorter versions of Java's KeyEvent.VK_UP and KeyEvent.VK_DOWN. Other
   * keyCode values can be found in the Java <a
   * href="http://download.oracle.com/javase/6/docs/api/java/awt/event/KeyEvent.html">KeyEvent</a> reference.
   *
   * ( end auto-generated )
   *
   * <h3>Advanced</h3>
   * When "key" is set to CODED, this will contain a Java key code.
   * <p>
   * For the arrow keys, keyCode will be one of UP, DOWN, LEFT and RIGHT.
   * Also available are ALT, CONTROL and SHIFT. A full set of constants
   * can be obtained from java.awt.event.KeyEvent, from the VK_XXXX variables.
   *
   * @webref input:keyboard
   * @see PApplet#key
   * @see PApplet#keyPressed
   * @see PApplet#keyPressed()
   * @see PApplet#keyReleased()
   */
  public int keyCode;

  /**
   * ( begin auto-generated from keyPressed_var.xml )
   *
   * The boolean system variable <b>keyPressed</b> is <b>true</b> if any key
   * is pressed and <b>false</b> if no keys are pressed.
   *
   * ( end auto-generated )
   * @webref input:keyboard
   * @see PApplet#key
   * @see PApplet#keyCode
   * @see PApplet#keyPressed()
   * @see PApplet#keyReleased()
   */
  public boolean keyPressed;
  List<Long> pressedKeys = new ArrayList<>(6);

  /**
   * The last KeyEvent object passed into a mouse function.
   * @deprecated Use a key event handler that passes an event instead.
   */
  @Deprecated
  public KeyEvent keyEvent;

  /**
   * ( begin auto-generated from focused.xml )
   *
   * Confirms if a Processing program is "focused", meaning that it is active
   * and will accept input from mouse or keyboard. This variable is "true" if
   * it is focused and "false" if not. This variable is often used when you
   * want to warn people they need to click on or roll over an applet before
   * it will work.
   *
   * ( end auto-generated )
   * @webref environment
   */
  public boolean focused = false;

//  /**
//   * Confirms if a Processing program is running inside a web browser. This
//   * variable is "true" if the program is online and "false" if not.
//   */
//  @Deprecated
//  public boolean online = false;
//  // This is deprecated because it's poorly named (and even more poorly
//  // understood). Further, we'll probably be removing applets soon, in which
//  // case this won't work at all. If you want this feature, you can check
//  // whether getAppletContext() returns null.

  /**
   * Time in milliseconds when the applet was started.
   * <p>
   * Used by the millis() function.
   */
  long millisOffset = System.currentTimeMillis();

  /**
   * ( begin auto-generated from frameRate_var.xml )
   *
   * The system variable <b>frameRate</b> contains the approximate frame rate
   * of the software as it executes. The initial value is 10 fps and is
   * updated with each frame. The value is averaged (integrated) over several
   * frames. As such, this value won't be valid until after 5-10 frames.
   *
   * ( end auto-generated )
   * @webref environment
   * @see PApplet#frameRate(float)
   * @see PApplet#frameCount
   */
  public float frameRate = 60;

  protected boolean looping = true;

  /** flag set to true when a redraw is asked for by the user */
  protected boolean redraw = true;

  /**
   * ( begin auto-generated from frameCount.xml )
   *
   * The system variable <b>frameCount</b> contains the number of frames
   * displayed since the program started. Inside <b>setup()</b> the value is
   * 0 and and after the first iteration of draw it is 1, etc.
   *
   * ( end auto-generated )
   * @webref environment
   * @see PApplet#frameRate(float)
   * @see PApplet#frameRate
   */
  public int frameCount;

  /** true if the sketch has stopped permanently. */
  public volatile boolean finished;

  /** used by the UncaughtExceptionHandler, so has to be static */
  static Throwable uncaughtThrowable;

  // public, but undocumented.. removing for 3.0a5
//  /**
//   * true if the animation thread is paused.
//   */
//  public volatile boolean paused;

  /**
   * true if exit() has been called so that things shut down
   * once the main thread kicks off.
   */
  protected boolean exitCalled;

  // messages to send if attached as an external vm

  /**
   * Position of the upper-lefthand corner of the editor window
   * that launched this applet.
   */
  static public final String ARGS_EDITOR_LOCATION = "--editor-location";

  static public final String ARGS_EXTERNAL = "--external";

  /**
   * Location for where to position the applet window on screen.
   * <p>
   * This is used by the editor to when saving the previous applet
   * location, or could be used by other classes to launch at a
   * specific position on-screen.
   */
  static public final String ARGS_LOCATION = "--location";

  /** Used by the PDE to suggest a display (set in prefs, passed on Run) */
  static public final String ARGS_DISPLAY = "--display";

//  static public final String ARGS_SPAN_DISPLAYS = "--span";

  static public final String ARGS_WINDOW_COLOR = "--window-color";

  static public final String ARGS_PRESENT = "--present";

  static public final String ARGS_STOP_COLOR = "--stop-color";

  static public final String ARGS_HIDE_STOP = "--hide-stop";

  /**
   * Allows the user or PdeEditor to set a specific sketch folder path.
   * <p>
   * Used by PdeEditor to pass in the location where saveFrame()
   * and all that stuff should write things.
   */
  static public final String ARGS_SKETCH_FOLDER = "--sketch-path";

  static public final String ARGS_DENSITY = "--density";

  /**
   * When run externally to a PdeEditor,
   * this is sent by the sketch when it quits.
   */
  static public final String EXTERNAL_STOP = "__STOP__";

  /**
   * When run externally to a PDE Editor, this is sent by the applet
   * whenever the window is moved.
   * <p>
   * This is used so that the editor can re-open the sketch window
   * in the same position as the user last left it.
   */
  static public final String EXTERNAL_MOVE = "__MOVE__";

  /** true if this sketch is being run by the PDE */
  boolean external = false;

  static final String ERROR_MIN_MAX =
    "Cannot use min() or max() on an empty array.";


  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


  protected PSurface surface;


  public PSurface getSurface() {
    return surface;
  }


  /**
   * A dummy frame to keep compatibility with 2.x code
   * and encourage users to update.
   */
  public Frame frame;


//  public Frame getFrame() {
//    return frame;
//  }
//
//
//  public void setFrame(Frame frame) {
//    this.frame = frame;
//  }


  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


//  /**
//   * Applet initialization. This can do GUI work because the components have
//   * not been 'realized' yet: things aren't visible, displayed, etc.
//   */
//  public void init() {
////    println("init() called " + Integer.toHexString(hashCode()));
//    // using a local version here since the class variable is deprecated
////    Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
////    screenWidth = screen.width;
////    screenHeight = screen.height;
//
//    defaultSize = true;
//    finished = false; // just for clarity
//
//    // this will be cleared by draw() if it is not overridden
//    looping = true;
//    redraw = true;  // draw this guy at least once
//    firstMouse = true;
//
//    // calculated dynamically on first call
////    // Removed in 2.1.2, brought back for 2.1.3. Usually sketchPath is set
////    // inside runSketch(), but if this sketch takes care of calls to init()
////    // when PApplet.main() is not used (i.e. it's in a Java application).
////    // THe path needs to be set here so that loadXxxx() functions work.
////    if (sketchPath == null) {
////      sketchPath = calcSketchPath();
////    }
//
//    // set during Surface.initFrame()
////    // Figure out the available display width and height.
////    // No major problem if this fails, we have to try again anyway in
////    // handleDraw() on the first (== 0) frame.
////    checkDisplaySize();
//
////    // Set the default size, until the user specifies otherwise
////    int w = sketchWidth();
////    int h = sketchHeight();
////    defaultSize = (w == DEFAULT_WIDTH) && (h == DEFAULT_HEIGHT);
////
////    g = makeGraphics(w, h, sketchRenderer(), null, true);
////    // Fire component resize event
////    setSize(w, h);
////    setPreferredSize(new Dimension(w, h));
////
////    width = g.width;
////    height = g.height;
//
//    surface.startThread();
//  }


  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


  boolean insideSettings;

  String renderer = JAVA2D;
//  int quality = 2;
  int smooth = 1;  // default smoothing (whatever that means for the renderer)

  boolean fullScreen;
  int display = -1;  // use default
  GraphicsDevice[] displayDevices;
  // Unlike the others above, needs to be public to support
  // the pixelWidth and pixelHeight fields.
  public int pixelDensity = 1;
  int suggestedDensity = -1;

  boolean present;

  String outputPath;
  OutputStream outputStream;

  // Background default needs to be different from the default value in
  // PGraphics.backgroundColor, otherwise size(100, 100) bg spills over.
  // https://github.com/processing/processing/issues/2297
  int windowColor = 0xffDDDDDD;


  /**
   * @param method "size" or "fullScreen"
   * @param args parameters passed to the function so we can show the user
   * @return true if safely inside the settings() method
   */
  boolean insideSettings(String method, Object... args) {
    if (insideSettings) {
      return true;
    }
    final String url = "https://processing.org/reference/" + method + "_.html";
    if (!external) {  // post a warning for users of Eclipse and other IDEs
      StringList argList = new StringList(args);
      System.err.println("When not using the PDE, " + method + "() can only be used inside settings().");
      System.err.println("Remove the " + method + "() method from setup(), and add the following:");
      System.err.println("public void settings() {");
      System.err.println("  " + method + "(" + argList.join(", ") + ");");
      System.err.println("}");
    }
    throw new IllegalStateException(method + "() cannot be used here, see " + url);
  }


  void handleSettings() {
    insideSettings = true;

    // Need the list of display devices to be queried already for usage below.
    // https://github.com/processing/processing/issues/3295
    // https://github.com/processing/processing/issues/3296
    // Not doing this from a static initializer because it may cause
    // PApplet to cache and the values to stick through subsequent runs.
    // Instead make it a runtime thing and a local variable.
    GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
    GraphicsDevice device = ge.getDefaultScreenDevice();
    displayDevices = ge.getScreenDevices();

    // Default or unparsed will be -1, spanning will be 0, actual displays will
    // be numbered from 1 because it's too weird to say "display 0" in prefs.
    if (display > 0 && display <= displayDevices.length) {
      device = displayDevices[display-1];
    }
    // Set displayWidth and displayHeight for people still using those.
    DisplayMode displayMode = device.getDisplayMode();
    displayWidth = displayMode.getWidth();
    displayHeight = displayMode.getHeight();

    // Here's where size(), fullScreen(), smooth(N) and noSmooth() might
    // be called, conjuring up the demons of various rendering configurations.
    settings();

    if (display == SPAN && platform == MACOSX) {
      // Make sure "Displays have separate Spaces" is unchecked
      // in System Preferences > Mission Control
      Process p = exec("defaults", "read", "com.apple.spaces", "spans-displays");
      BufferedReader outReader = createReader(p.getInputStream());
      BufferedReader errReader = createReader(p.getErrorStream());
      StringBuilder stdout = new StringBuilder();
      StringBuilder stderr = new StringBuilder();
      String line = null;
      try {
        while ((line = outReader.readLine()) != null) {
          stdout.append(line);
        }
        while ((line = errReader.readLine()) != null) {
          stderr.append(line);
        }
      } catch (IOException e) {
        printStackTrace(e);
      }

      int resultCode = -1;
      try {
        resultCode = p.waitFor();
      } catch (InterruptedException e) { }

      String result = trim(stdout.toString());
      if ("0".equals(result)) {
        EventQueue.invokeLater(new Runnable() {
          public void run() {
            checkLookAndFeel();
            final String msg =
              "To use fullScreen(SPAN), first turn off “Displays have separate spaces”\n" +
              "in System Preferences \u2192 Mission Control. Then log out and log back in.";
            JOptionPane.showMessageDialog(null, msg, "Apple's Defaults Stink",
                                          JOptionPane.WARNING_MESSAGE);
          }
        });
      } else if (!"1".equals(result)) {
        System.err.println("Could not check the status of “Displays have separate spaces.”");
        System.err.format("Received message '%s' and result code %d.%n", trim(stderr.toString()), resultCode);
      }
    }

    insideSettings = false;
  }


  /**
  * ( begin auto-generated from settings.xml )
  *
  * Description to come...
  *
  * ( end auto-generated )
  *
  * Override this method to call size() when not using the PDE.
  *
  * @webref environment
  * @see PApplet#fullScreen()
  * @see PApplet#setup()
  * @see PApplet#size(int,int)
  * @see PApplet#smooth()
  */
  public void settings() {
    // is this necessary? (doesn't appear to be, so removing)
    //size(DEFAULT_WIDTH, DEFAULT_HEIGHT, JAVA2D);
  }


  final public int sketchWidth() {
    return width;
  }


  final public int sketchHeight() {
    return height;
  }


  final public String sketchRenderer() {
    return renderer;
  }


  // Named quality instead of smooth to avoid people trying to set (or get)
  // the current smooth level this way. Also that smooth(number) isn't really
  // public or well-known API. It's specific to the capabilities of the
  // rendering surface, and somewhat independent of whether the sketch is
  // smoothing at any given time. It's also a bit like getFill() would return
  // true/false for whether fill was enabled, getFillColor() would return the
  // color itself. Or at least that's what I can recall at the moment. [fry]
//  public int sketchQuality() {
//    //return 2;
//    return quality;
//  }
  // smoothing 1 is default.. 0 is none.. 2,4,8 depend on renderer
  final public int sketchSmooth() {
    return smooth;
  }


  final public boolean sketchFullScreen() {
    //return false;
    return fullScreen;
  }


//  // Could be named 'screen' instead of display since it's the people using
//  // full screen who will be looking for it. On the other hand, screenX/Y/Z
//  // makes things confusing, and if 'displayIndex' exists...
//  public boolean sketchSpanDisplays() {
//    //return false;
//    return spanDisplays;
//  }


  // Numbered from 1, SPAN (0) means all displays, -1 means the default display
  final public int sketchDisplay() {
    return display;
  }


  final public String sketchOutputPath() {
    //return null;
    return outputPath;
  }


  final public OutputStream sketchOutputStream() {
    //return null;
    return outputStream;
  }


  final public int sketchWindowColor() {
    return windowColor;
  }


  final public int sketchPixelDensity() {
    return pixelDensity;
  }


  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

 /**
  * ( begin auto-generated from displayDensity.xml )
  *
  * This function returns the number "2" if the screen is a high-density
  * screen (called a Retina display on OS X or high-dpi on Windows and Linux)
  * and a "1" if not. This information is useful for a program to adapt to
  * run at double the pixel density on a screen that supports it.
  *
  * ( end auto-generated )
  *
  * @webref environment
  * @see PApplet#pixelDensity(int)
  * @see PApplet#size(int,int)
  */
  public int displayDensity() {
    if (display != SPAN && (fullScreen || present)) {
      return displayDensity(display);
    }
    // walk through all displays, use 2 if any display is 2
    for (int i = 0; i < displayDevices.length; i++) {
      if (displayDensity(i+1) == 2) {
        return 2;
      }
    }
    // If nobody's density is 2 then everyone is 1
    return 1;
  }

 /**
  * @param display the display number to check
  */
  public int displayDensity(int display) {
    if (PApplet.platform == PConstants.MACOSX) {
      // This should probably be reset each time there's a display change.
      // A 5-minute search didn't turn up any such event in the Java 7 API.
      // Also, should we use the Toolkit associated with the editor window?
      final String javaVendor = System.getProperty("java.vendor");
      if (javaVendor.contains("Oracle")) {
        GraphicsDevice device;
        GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();

        if (display == -1) {
          device = env.getDefaultScreenDevice();

        } else if (display == SPAN) {
          throw new RuntimeException("displayDensity() only works with specific display numbers");

        } else {
          GraphicsDevice[] devices = env.getScreenDevices();
          if (display > 0 && display <= devices.length) {
            device = devices[display - 1];
          } else {
            if (devices.length == 1) {
              System.err.println("Only one display is currently known, use displayDensity(1).");
            } else {
              System.err.format("Your displays are numbered %d through %d, " +
                "pass one of those numbers to displayDensity()%n", 1, devices.length);
            }
            throw new RuntimeException("Display " + display + " does not exist.");
          }
        }

        try {
          Field field = device.getClass().getDeclaredField("scale");
          if (field != null) {
            field.setAccessible(true);
            Object scale = field.get(device);

            if (scale instanceof Integer && ((Integer)scale).intValue() == 2) {
              return 2;
            }
          }
        } catch (Exception ignore) { }
      }
    } else if (PApplet.platform == PConstants.WINDOWS ||
        PApplet.platform == PConstants.LINUX) {
      if (suggestedDensity == -1) {
        // TODO: detect and return DPI scaling using JNA; Windows has
        //   a system-wide value, not sure how it works on Linux
        return 1;
      } else if (suggestedDensity == 1 || suggestedDensity == 2) {
        return suggestedDensity;
      }
    }
    return 1;
  }


 /**
  * @webref environment
  * @param density 1 or 2
  *
  */
  public void pixelDensity(int density) {
    //println(density + " " + this.pixelDensity);
    if (density != this.pixelDensity) {
      if (insideSettings("pixelDensity", density)) {
        if (density != 1 && density != 2) {
          throw new RuntimeException("pixelDensity() can only be 1 or 2");
        }
        if (!FX2D.equals(renderer) && density == 2 && displayDensity() == 1) {
          // FX has its own check in PSurfaceFX
          // Don't throw exception because the sketch should still work
          System.err.println("pixelDensity(2) is not available for this display");
          this.pixelDensity = 1;
        } else {
          this.pixelDensity = density;
        }
      } else {
        System.err.println("not inside settings");
        // this should only be reachable when not running in the PDE,
        // so saying it's a settings()--not just setup()--issue should be ok
        throw new RuntimeException("pixelDensity() can only be used inside settings()");
      }
    }
  }


  /**
   * Called by PSurface objects to set the width and height variables,
   * and update the pixelWidth and pixelHeight variables.
   */
  public void setSize(int width, int height) {
    this.width = width;
    this.height = height;
    pixelWidth = width * pixelDensity;
    pixelHeight = height * pixelDensity;
  }


  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


  /**
   * @nowebref
   */
  public void smooth() {
    smooth(1);
  }

  /**
   * @webref environment
   * @param level either 2, 3, 4, or 8 depending on the renderer
   */
  public void smooth(int level) {
    if (insideSettings) {
      this.smooth = level;

    } else if (this.smooth != level) {
      smoothWarning("smooth");
    }
  }

  /**
   * @webref environment
   */
  public void noSmooth() {
    if (insideSettings) {
      this.smooth = 0;

    } else if (this.smooth != 0) {
      smoothWarning("noSmooth");
    }
  }


  private void smoothWarning(String method) {
    // When running from the PDE, say setup(), otherwise say settings()
    final String where = external ? "setup" : "settings";
    PGraphics.showWarning("%s() can only be used inside %s()", method, where);
    if (external) {
      PGraphics.showWarning("When run from the PDE, %s() is automatically moved from setup() to settings()", method);
    }
  }


  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


  public PGraphics getGraphics() {
    return g;
  }


  // TODO should this join the sketchXxxx() functions specific to settings()?
  public void orientation(int which) {
    // ignore calls to the orientation command
  }


  /**
   * Called by the browser or applet viewer to inform this applet that it
   * should start its execution. It is called after the init method and
   * each time the applet is revisited in a Web page.
   * <p/>
   * Called explicitly via the first call to PApplet.paint(), because
   * PAppletGL needs to have a usable screen before getting things rolling.
   */
  public void start() {
//    paused = false; // unpause the thread  // removing for 3.0a5, don't think we want this here

    resume();
    handleMethods("resume");
    surface.resumeThread();
  }


  /**
   * Called by the browser or applet viewer to inform
   * this applet that it should stop its execution.
   * <p/>
   * Unfortunately, there are no guarantees from the Java spec
   * when or if stop() will be called (i.e. on browser quit,
   * or when moving between web pages), and it's not always called.
   */
  public void stop() {
    // this used to shut down the sketch, but that code has
    // been moved to destroy/dispose()

//    if (paused) {
//      synchronized (pauseObject) {
//      try {
//          pauseObject.wait();
//        } catch (InterruptedException e) {
//          // waiting for this interrupt on a start() (resume) call
//        }
//      }
//    }

    //paused = true; // causes animation thread to sleep  // 3.0a5
    pause();
    handleMethods("pause");
    // calling this down here, since it's another thread it's safer to call
    // pause() and the registered pause methods first.
    surface.pauseThread();

    // actual pause will happen in the run() method

//    synchronized (pauseObject) {
//      debug("stop() calling pauseObject.wait()");
//      try {
//        pauseObject.wait();
//      } catch (InterruptedException e) {
//        // waiting for this interrupt on a start() (resume) call
//      }
//    }
  }


  /**
   * Sketch has been paused. Called when switching tabs in a browser or
   * swapping to a different application on Android. Also called just before
   * quitting. Use to safely disable things like serial, sound, or sensors.
   */
  public void pause() { }


  /**
   * Sketch has resumed. Called when switching tabs in a browser or
   * swapping to this application on Android. Also called on startup.
   * Use this to safely disable things like serial, sound, or sensors.
   */
  public void resume() { }


//  /**
//   * Called by the browser or applet viewer to inform this applet
//   * that it is being reclaimed and that it should destroy
//   * any resources that it has allocated.
//   * <p/>
//   * destroy() supposedly gets called as the applet viewer
//   * is shutting down the applet. stop() is called
//   * first, and then destroy() to really get rid of things.
//   * no guarantees on when they're run (on browser quit, or
//   * when moving between pages), though.
//   */
//  @Override
//  public void destroy() {
//    this.dispose();
//  }


  //////////////////////////////////////////////////////////////


  /** Map of registered methods, stored by name. */
  HashMap<String, RegisteredMethods> registerMap =
    new HashMap<>();

  /** Lock when un/registering from multiple threads */
  private final Object registerLock = new Object[0];


  class RegisteredMethods {
    int count;
    Object[] objects;
    // Because the Method comes from the class being called,
    // it will be unique for most, if not all, objects.
    Method[] methods;
    Object[] emptyArgs = new Object[] { };


    void handle() {
      handle(emptyArgs);
    }


    void handle(Object[] args) {
      for (int i = 0; i < count; i++) {
        try {
          methods[i].invoke(objects[i], args);
        } catch (Exception e) {
          // check for wrapped exception, get root exception
          Throwable t;
          if (e instanceof InvocationTargetException) {
            InvocationTargetException ite = (InvocationTargetException) e;
            t = ite.getCause();
          } else {
            t = e;
          }
          // check for RuntimeException, and allow to bubble up
          if (t instanceof RuntimeException) {
            // re-throw exception
            throw (RuntimeException) t;
          } else {
            // trap and print as usual
            printStackTrace(t);
          }
        }
      }
    }


    void add(Object object, Method method) {
      if (findIndex(object) == -1) {
        if (objects == null) {
          objects = new Object[5];
          methods = new Method[5];

        } else if (count == objects.length) {
          objects = (Object[]) PApplet.expand(objects);
          methods = (Method[]) PApplet.expand(methods);
        }
        objects[count] = object;
        methods[count] = method;
        count++;
      } else {
        die(method.getName() + "() already added for this instance of " +
            object.getClass().getName());
      }
    }


    /**
     * Removes first object/method pair matched (and only the first,
     * must be called multiple times if object is registered multiple times).
     * Does not shrink array afterwards, silently returns if method not found.
     */
//    public void remove(Object object, Method method) {
//      int index = findIndex(object, method);
    public void remove(Object object) {
      int index = findIndex(object);
      if (index != -1) {
        // shift remaining methods by one to preserve ordering
        count--;
        for (int i = index; i < count; i++) {
          objects[i] = objects[i+1];
          methods[i] = methods[i+1];
        }
        // clean things out for the gc's sake
        objects[count] = null;
        methods[count] = null;
      }
    }


//    protected int findIndex(Object object, Method method) {
    protected int findIndex(Object object) {
      for (int i = 0; i < count; i++) {
        if (objects[i] == object) {
//        if (objects[i] == object && methods[i].equals(method)) {
          //objects[i].equals() might be overridden, so use == for safety
          // since here we do care about actual object identity
          //methods[i]==method is never true even for same method, so must use
          // equals(), this should be safe because of object identity
          return i;
        }
      }
      return -1;
    }
  }


  /**
   * Register a built-in event so that it can be fired for libraries, etc.
   * Supported events include:
   * <ul>
   * <li>pre – at the very top of the draw() method (safe to draw)
   * <li>draw – at the end of the draw() method (safe to draw)
   * <li>post – after draw() has exited (not safe to draw)
   * <li>pause – called when the sketch is paused
   * <li>resume – called when the sketch is resumed
   * <li>dispose – when the sketch is shutting down (definitely not safe to draw)
   * <ul>
   * In addition, the new (for 2.0) processing.event classes are passed to
   * the following event types:
   * <ul>
   * <li>mouseEvent
   * <li>keyEvent
   * <li>touchEvent
   * </ul>
   * The older java.awt events are no longer supported.
   * See the Library Wiki page for more details.
   * @param methodName name of the method to be called
   * @param target the target object that should receive the event
   */
  public void registerMethod(String methodName, Object target) {
    if (methodName.equals("mouseEvent")) {
      registerWithArgs("mouseEvent", target, new Class[] { processing.event.MouseEvent.class });

    } else if (methodName.equals("keyEvent")) {
      registerWithArgs("keyEvent", target, new Class[] { processing.event.KeyEvent.class });

    } else if (methodName.equals("touchEvent")) {
      registerWithArgs("touchEvent", target, new Class[] { processing.event.TouchEvent.class });

    } else {
      registerNoArgs(methodName, target);
    }
  }


  private void registerNoArgs(String name, Object o) {
    Class<?> c = o.getClass();
    try {
      Method method = c.getMethod(name);
      synchronized (registerLock) {
        RegisteredMethods meth = registerMap.get(name);
        if (meth == null) {
          meth = new RegisteredMethods();
          registerMap.put(name, meth);
        }
        meth.add(o, method);
      }
    } catch (NoSuchMethodException nsme) {
      die("There is no public " + name + "() method in the class " +
          o.getClass().getName());

    } catch (Exception e) {
      die("Could not register " + name + " + () for " + o, e);
    }
  }


  private void registerWithArgs(String name, Object o, Class<?> cargs[]) {
    Class<?> c = o.getClass();
    try {
      Method method = c.getMethod(name, cargs);
      synchronized (registerLock) {
        RegisteredMethods meth = registerMap.get(name);
        if (meth == null) {
          meth = new RegisteredMethods();
          registerMap.put(name, meth);
        }
        meth.add(o, method);
      }
    } catch (NoSuchMethodException nsme) {
      die("There is no public " + name + "() method in the class " +
          o.getClass().getName());

    } catch (Exception e) {
      die("Could not register " + name + " + () for " + o, e);
    }
  }


//  public void registerMethod(String methodName, Object target, Object... args) {
//    registerWithArgs(methodName, target, args);
//  }


  public void unregisterMethod(String name, Object target) {
    synchronized (registerLock) {
      RegisteredMethods meth = registerMap.get(name);
      if (meth == null) {
        die("No registered methods with the name " + name + "() were found.");
      }
      try {
//      Method method = o.getClass().getMethod(name, new Class[] {});
//      meth.remove(o, method);
        meth.remove(target);
      } catch (Exception e) {
        die("Could not unregister " + name + "() for " + target, e);
      }
    }
  }


  protected void handleMethods(String methodName) {
    synchronized (registerLock) {
      RegisteredMethods meth = registerMap.get(methodName);
      if (meth != null) {
        meth.handle();
      }
    }
  }


  protected void handleMethods(String methodName, Object[] args) {
    synchronized (registerLock) {
      RegisteredMethods meth = registerMap.get(methodName);
      if (meth != null) {
        meth.handle(args);
      }
    }
  }


  /*
  @Deprecated
  public void registerSize(Object o) {
    System.err.println("The registerSize() command is no longer supported.");
//    Class<?> methodArgs[] = new Class[] { Integer.TYPE, Integer.TYPE };
//    registerWithArgs(sizeMethods, "size", o, methodArgs);
  }


  @Deprecated
  public void registerPre(Object o) {
    registerNoArgs("pre", o);
  }


  @Deprecated
  public void registerDraw(Object o) {
    registerNoArgs("draw", o);
  }


  @Deprecated
  public void registerPost(Object o) {
    registerNoArgs("post", o);
  }


  @Deprecated
  public void registerDispose(Object o) {
    registerNoArgs("dispose", o);
  }


  @Deprecated
  public void unregisterSize(Object o) {
    System.err.println("The unregisterSize() command is no longer supported.");
//    Class<?> methodArgs[] = new Class[] { Integer.TYPE, Integer.TYPE };
//    unregisterWithArgs(sizeMethods, "size", o, methodArgs);
  }


  @Deprecated
  public void unregisterPre(Object o) {
    unregisterMethod("pre", o);
  }


  @Deprecated
  public void unregisterDraw(Object o) {
    unregisterMethod("draw", o);
  }


  @Deprecated
  public void unregisterPost(Object o) {
    unregisterMethod("post", o);
  }


  @Deprecated
  public void unregisterDispose(Object o) {
    unregisterMethod("dispose", o);
  }


  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  // Old methods with AWT API that should not be used.
  // These were never implemented on Android so they're stored separately.

  RegisteredMethods mouseEventMethods, keyEventMethods;


  protected void reportDeprecation(Class<?> c, boolean mouse) {
    if (g != null) {
      PGraphics.showWarning("The class " + c.getName() +
                            " is incompatible with Processing 2.0.");
      PGraphics.showWarning("A library (or other code) is using register" +
                            (mouse ? "Mouse" : "Key") + "Event() " +
                            "which is no longer available.");
      // This will crash with OpenGL, so quit anyway
      if (g instanceof PGraphicsOpenGL) {
        PGraphics.showWarning("Stopping the sketch because this code will " +
                                          "not work correctly with OpenGL.");
        throw new RuntimeException("This sketch uses a library that " +
                                               "needs to be updated for Processing 2.0.");
      }
    }
  }


  @Deprecated
  public void registerMouseEvent(Object o) {
    Class<?> c = o.getClass();
    reportDeprecation(c, true);
    try {
      Method method = c.getMethod("mouseEvent", new Class[] { java.awt.event.MouseEvent.class });
      if (mouseEventMethods == null) {
        mouseEventMethods = new RegisteredMethods();
      }
      mouseEventMethods.add(o, method);
    } catch (Exception e) {
      die("Could not register mouseEvent() for " + o, e);
    }
  }


  @Deprecated
  public void unregisterMouseEvent(Object o) {
    try {
//      Method method = o.getClass().getMethod("mouseEvent", new Class[] { MouseEvent.class });
//      mouseEventMethods.remove(o, method);
      mouseEventMethods.remove(o);
    } catch (Exception e) {
      die("Could not unregister mouseEvent() for " + o, e);
    }
  }


  @Deprecated
  public void registerKeyEvent(Object o) {
    Class<?> c = o.getClass();
    reportDeprecation(c, false);
    try {
      Method method = c.getMethod("keyEvent", new Class[] { java.awt.event.KeyEvent.class });
      if (keyEventMethods == null) {
        keyEventMethods = new RegisteredMethods();
      }
      keyEventMethods.add(o, method);
    } catch (Exception e) {
      die("Could not register keyEvent() for " + o, e);
    }
  }


  @Deprecated
  public void unregisterKeyEvent(Object o) {
    try {
//      Method method = o.getClass().getMethod("keyEvent", new Class[] { KeyEvent.class });
//      keyEventMethods.remove(o, method);
      keyEventMethods.remove(o);
    } catch (Exception e) {
      die("Could not unregister keyEvent() for " + o, e);
    }
  }
  */



  //////////////////////////////////////////////////////////////

/**
   * ( begin auto-generated from setup.xml )
   *
   * The <b>setup()</b> function is called once when the program starts. It's
   * used to define initial
   * enviroment properties such as screen size and background color and to
   * load media such as images
   * and fonts as the program starts. There can only be one <b>setup()</b>
   * function for each program and
   * it shouldn't be called again after its initial execution. Note:
   * Variables declared within
   * <b>setup()</b> are not accessible within other functions, including
   * <b>draw()</b>.
   *
   * ( end auto-generated )
 * @webref structure
 * @usage web_application
 * @see PApplet#size(int, int)
 * @see PApplet#loop()
 * @see PApplet#noLoop()
 * @see PApplet#draw()
 */
  public void setup() {
  }

/**
   * ( begin auto-generated from draw.xml )
   *
   * Called directly after <b>setup()</b> and continuously executes the lines
   * of code contained inside its block until the program is stopped or
   * <b>noLoop()</b> is called. The <b>draw()</b> function is called
   * automatically and should never be called explicitly. It should always be
   * controlled with <b>noLoop()</b>, <b>redraw()</b> and <b>loop()</b>.
   * After <b>noLoop()</b> stops the code in <b>draw()</b> from executing,
   * <b>redraw()</b> causes the code inside <b>draw()</b> to execute once and
   * <b>loop()</b> will causes the code inside <b>draw()</b> to execute
   * continuously again. The number of times <b>draw()</b> executes in each
   * second may be controlled with <b>frameRate()</b> function.
   * There can only be one <b>draw()</b> function for each sketch
   * and <b>draw()</b> must exist if you want the code to run continuously or
   * to process events such as <b>mousePressed()</b>. Sometimes, you might
   * have an empty call to <b>draw()</b> in your program as shown in the
   * above example.
   *
   * ( end auto-generated )
 * @webref structure
 * @usage web_application
 * @see PApplet#setup()
 * @see PApplet#loop()
 * @see PApplet#noLoop()
 * @see PApplet#redraw()
 * @see PApplet#frameRate(float)
 * @see PGraphics#background(float, float, float, float)
 */
  public void draw() {
    // if no draw method, then shut things down
    //System.out.println("no draw method, goodbye");
    finished = true;
  }


  //////////////////////////////////////////////////////////////


  /*
  protected void resizeRenderer(int newWidth, int newHeight) {
    debug("resizeRenderer request for " + newWidth + " " + newHeight);
    if (width != newWidth || height != newHeight) {
      debug("  former size was " + width + " " + height);
      g.setSize(newWidth, newHeight);
      width = newWidth;
      height = newHeight;
    }
  }
  */


  /**
   * Create a full-screen sketch using the default renderer.
   */
  public void fullScreen() {
    if (!fullScreen) {
      if (insideSettings("fullScreen")) {
        this.fullScreen = true;
      }
    }
  }


  public void fullScreen(int display) {
    if (!fullScreen || display != this.display) {
      if (insideSettings("fullScreen", display)) {
        this.fullScreen = true;
        this.display = display;
      }
    }
  }


/**
  * ( begin auto-generated from fullScreen.xml )
  *
  * Description to come...
  *
  * ( end auto-generated )
  * @webref environment
  * @param renderer the renderer to use, e.g. P2D, P3D, JAVA2D (default)
  * @see PApplet#settings()
  * @see PApplet#setup()
  * @see PApplet#size(int,int)
  * @see PApplet#smooth()
  */
  public void fullScreen(String renderer) {
    if (!fullScreen ||
        !renderer.equals(this.renderer)) {
      if (insideSettings("fullScreen", renderer)) {
        this.fullScreen = true;
        this.renderer = renderer;
      }
    }
  }


  /**
   * @param display the screen to run the sketch on (1, 2, 3, etc. or on multiple screens using SPAN)
   */

  public void fullScreen(String renderer, int display) {
    if (!fullScreen ||
        !renderer.equals(this.renderer) ||
        display != this.display) {
      if (insideSettings("fullScreen", renderer, display)) {
        this.fullScreen = true;
        this.renderer = renderer;
        this.display = display;
      }
    }
  }


  /**
   * ( begin auto-generated from size.xml )
   *
   * Defines the dimension of the display window in units of pixels. The
   * <b>size()</b> function must be the first line in <b>setup()</b>. If
   * <b>size()</b> is not used, the default size of the window is 100x100
   * pixels. The system variables <b>width</b> and <b>height</b> are set by
   * the parameters passed to this function.<br />
   * <br />
   * Do not use variables as the parameters to <b>size()</b> function,
   * because it will cause problems when exporting your sketch. When
   * variables are used, the dimensions of your sketch cannot be determined
   * during export. Instead, employ numeric values in the <b>size()</b>
   * statement, and then use the built-in <b>width</b> and <b>height</b>
   * variables inside your program when the dimensions of the display window
   * are needed.<br />
   * <br />
   * The <b>size()</b> function can only be used once inside a sketch, and
   * cannot be used for resizing.<br/>
   * <br/> <b>renderer</b> parameter selects which rendering engine to use.
   * For example, if you will be drawing 3D shapes, use <b>P3D</b>, if you
   * want to export images from a program as a PDF file use <b>PDF</b>. A
   * brief description of the three primary renderers follows:<br />
   * <br />
   * <b>P2D</b> (Processing 2D) - The default renderer that supports two
   * dimensional drawing.<br />
   * <br />
   * <b>P3D</b> (Processing 3D) - 3D graphics renderer that makes use of
   * OpenGL-compatible graphics hardware.<br />
   * <br />
   * <b>PDF</b> - The PDF renderer draws 2D graphics directly to an Acrobat
   * PDF file. This produces excellent results when you need vector shapes
   * for high resolution output or printing. You must first use Import
   * Library &rarr; PDF to make use of the library. More information can be
   * found in the PDF library reference.<br />
   * <br />
   * The P3D renderer doesn't support <b>strokeCap()</b> or
   * <b>strokeJoin()</b>, which can lead to ugly results when using
   * <b>strokeWeight()</b>. (<a
   * href="http://code.google.com/p/processing/issues/detail?id=123">Issue
   * 123</a>) <br />
   * <br />
   * The maximum width and height is limited by your operating system, and is
   * usually the width and height of your actual screen. On some machines it
   * may simply be the number of pixels on your current screen, meaning that
   * a screen of 800x600 could support <b>size(1600, 300)</b>, since it's the
   * same number of pixels. This varies widely so you'll have to try
   * different rendering modes and sizes until you get what you're looking
   * for. If you need something larger, use <b>createGraphics</b> to create a
   * non-visible drawing surface.<br />
   * <br />
   * Again, the <b>size()</b> function must be the first line of the code (or
   * first item inside setup). Any code that appears before the <b>size()</b>
   * command may run more than once, which can lead to confusing results.
   *
   * ( end auto-generated )
   *
   * <h3>Advanced</h3>
   * If using Java 1.3 or later, this will default to using
   * PGraphics2, the Java2D-based renderer. If using Java 1.1,
   * or if PGraphics2 is not available, then PGraphics will be used.
   * To set your own renderer, use the other version of the size()
   * method that takes a renderer as its last parameter.
   * <p>
   * If called once a renderer has already been set, this will
   * use the previous renderer and simply resize it.
   *
   * @webref environment
   * @param width width of the display window in units of pixels
   * @param height height of the display window in units of pixels
   * @see PApplet#width
   * @see PApplet#height
   */
  public void size(int width, int height) {
    // Check to make sure the width/height have actually changed. It's ok to
    // have size() duplicated (and may be better to not remove it from where
    // it sits in the code anyway when adding it to settings()). Only take
    // action if things have changed.
    if (width != this.width ||
        height != this.height) {
      if (insideSettings("size", width, height)) {
        this.width = width;
        this.height = height;
      }
    }
  }


  public void size(int width, int height, String renderer) {
    if (width != this.width ||
        height != this.height ||
        !renderer.equals(this.renderer)) {
      //println(width, height, renderer, this.width, this.height, this.renderer);
      if (insideSettings("size", width, height, "\"" + renderer + "\"")) {
        this.width = width;
        this.height = height;
        this.renderer = renderer;
      }
    }
  }


  /**
   * @nowebref
   */
  public void size(int width, int height, String renderer, String path) {
    // Don't bother checking path, it's probably been modified to absolute,
    // so it would always trigger. But the alternative is comparing the
    // canonical file, which seems overboard.
    if (width != this.width ||
        height != this.height ||
        !renderer.equals(this.renderer)) {
      if (insideSettings("size", width, height, "\"" + renderer + "\"",
                         "\"" + path + "\"")) {
        this.width = width;
        this.height = height;
        this.renderer = renderer;
        this.outputPath = path;
      }
    }

    /*
    if (!renderer.equals(sketchRenderer())) {
      if (external) {
        // The PDE should have parsed it, but something still went wrong
        final String msg =
          String.format("Something bad happened when calling " +
                        "size(%d, %d, %s, %s)", w, h, renderer, path);
        throw new RuntimeException(msg);

      } else {
        System.err.println("Because you're not running from the PDE, add this to your code:");
        System.err.println("public String sketchRenderer() {");
        System.err.println("  return \"" + renderer + "\";");
        System.err.println("}");
        throw new RuntimeException("The sketchRenderer() method is not implemented.");
      }
    }
    */

    // size() shouldn't actually do anything here [3.0a8]
//    surface.setSize(w, h);
    // this won't be absolute, which will piss off PDF [3.0a8]
//    g.setPath(path);  // finally, a path

//    // Run this from the EDT, just cuz it's AWT stuff (or maybe later Swing)
//   EventQueue.invokeLater(new Runnable() {
//     public void run() {
//    // Set the preferred size so that the layout managers can handle it
//    setPreferredSize(new Dimension(w, h));
//    setSize(w, h);
//     }
//   });
//
//    // ensure that this is an absolute path
//    if (path != null) path = savePath(path);
//
//    String currentRenderer = g.getClass().getName();
//    if (currentRenderer.equals(renderer)) {
////      // Avoid infinite loop of throwing exception to reset renderer
////      resizeRenderer(w, h);
//      surface.setSize(w, h);
//
//    } else {  // renderer change attempted
//      // no longer kosher with 3.0a5
//      throw new RuntimeException("Y'all need to implement sketchRenderer()");
//      /*
//      // otherwise ok to fall through and create renderer below
//      // the renderer is changing, so need to create a new object
//      g = makeGraphics(w, h, renderer, path, true);
//      this.width = w;
//      this.height = h;
//
//      // fire resize event to make sure the applet is the proper size
////      setSize(iwidth, iheight);
//      // this is the function that will run if the user does their own
//      // size() command inside setup, so set defaultSize to false.
//      defaultSize = false;
//
//      // throw an exception so that setup() is called again
//      // but with a properly sized render
//      // this is for opengl, which needs a valid, properly sized
//      // display before calling anything inside setup().
//      throw new RendererChangeException();
//      */
//    }
  }


  public PGraphics createGraphics(int w, int h) {
    return createGraphics(w, h, JAVA2D);
  }


  /**
   * ( begin auto-generated from createGraphics.xml )
   *
   * Creates and returns a new <b>PGraphics</b> object of the types P2D or
   * P3D. Use this class if you need to draw into an off-screen graphics
   * buffer. The PDF renderer requires the filename parameter. The DXF
   * renderer should not be used with <b>createGraphics()</b>, it's only
   * built for use with <b>beginRaw()</b> and <b>endRaw()</b>.<br />
   * <br />
   * It's important to call any drawing functions between <b>beginDraw()</b>
   * and <b>endDraw()</b> statements. This is also true for any functions
   * that affect drawing, such as <b>smooth()</b> or <b>colorMode()</b>.<br/>
   * <br/> the main drawing surface which is completely opaque, surfaces
   * created with <b>createGraphics()</b> can have transparency. This makes
   * it possible to draw into a graphics and maintain the alpha channel. By
   * using <b>save()</b> to write a PNG or TGA file, the transparency of the
   * graphics object will be honored. Note that transparency levels are
   * binary: pixels are either complete opaque or transparent. For the time
   * being, this means that text characters will be opaque blocks. This will
   * be fixed in a future release (<a
   * href="http://code.google.com/p/processing/issues/detail?id=80">Issue 80</a>).
   *
   * ( end auto-generated )
   * <h3>Advanced</h3>
   * Create an offscreen PGraphics object for drawing. This can be used
   * for bitmap or vector images drawing or rendering.
   * <UL>
   * <LI>Do not use "new PGraphicsXxxx()", use this method. This method
   * ensures that internal variables are set up properly that tie the
   * new graphics context back to its parent PApplet.
   * <LI>The basic way to create bitmap images is to use the <A
   * HREF="http://processing.org/reference/saveFrame_.html">saveFrame()</A>
   * function.
   * <LI>If you want to create a really large scene and write that,
   * first make sure that you've allocated a lot of memory in the Preferences.
   * <LI>If you want to create images that are larger than the screen,
   * you should create your own PGraphics object, draw to that, and use
   * <A HREF="http://processing.org/reference/save_.html">save()</A>.
   * <PRE>
   *
   * PGraphics big;
   *
   * void setup() {
   *   big = createGraphics(3000, 3000);
   *
   *   big.beginDraw();
   *   big.background(128);
   *   big.line(20, 1800, 1800, 900);
   *   // etc..
   *   big.endDraw();
   *
   *   // make sure the file is written to the sketch folder
   *   big.save("big.tif");
   * }
   *
   * </PRE>
   * <LI>It's important to always wrap drawing to createGraphics() with
   * beginDraw() and endDraw() (beginFrame() and endFrame() prior to
   * revision 0115). The reason is that the renderer needs to know when
   * drawing has stopped, so that it can update itself internally.
   * This also handles calling the defaults() method, for people familiar
   * with that.
   * <LI>With Processing 0115 and later, it's possible to write images in
   * formats other than the default .tga and .tiff. The exact formats and
   * background information can be found in the developer's reference for
   * <A HREF="http://dev.processing.org/reference/core/javadoc/processing/core/PImage.html#save(java.lang.String)">PImage.save()</A>.
   * </UL>
   *
   * @webref rendering
   * @param w width in pixels
   * @param h height in pixels
   * @param renderer Either P2D, P3D, or PDF
   * @see PGraphics#PGraphics
   *
   */
  public PGraphics createGraphics(int w, int h, String renderer) {
    return createGraphics(w, h, renderer, null);
  }


  /**
   * Create an offscreen graphics surface for drawing, in this case
   * for a renderer that writes to a file (such as PDF or DXF).
   * @param path the name of the file (can be an absolute or relative path)
   */
  public PGraphics createGraphics(int w, int h,
                                  String renderer, String path) {
    return makeGraphics(w, h, renderer, path, false);
    /*
    if (path != null) {
      path = savePath(path);
    }
    PGraphics pg = makeGraphics(w, h, renderer, path, false);
    //pg.parent = this;  // why wasn't setParent() used before 3.0a6?
    //pg.setParent(this);  // make save() work
    // Nevermind, parent is set in makeGraphics()
    return pg;
    */
  }


//  public PGraphics makePrimaryGraphics(int wide, int high) {
//    return makeGraphics(wide, high, sketchRenderer(), null, true);
//  }


  /**
   * Version of createGraphics() used internally.
   * @param path A path (or null if none), can be absolute or relative ({@link PApplet#savePath} will be called)
   */
  protected PGraphics makeGraphics(int w, int h,
                                   String renderer, String path,
                                   boolean primary) {
//    String openglError = external ?
//      // This first one should no longer be possible
//      "Before using OpenGL, first select " +
//      "Import Library > OpenGL from the Sketch menu." :
//       // Welcome to Java programming! The training wheels are off.
//      "The Java classpath and native library path is not " +
//      "properly set for using the OpenGL library.";

    if (!primary && !g.isGL()) {
      if (renderer.equals(P2D)) {
        throw new RuntimeException("createGraphics() with P2D requires size() to use P2D or P3D");
      } else if (renderer.equals(P3D)) {
        throw new RuntimeException("createGraphics() with P3D or OPENGL requires size() to use P2D or P3D");
      }
    }

    try {
      Class<?> rendererClass =
        Thread.currentThread().getContextClassLoader().loadClass(renderer);

      Constructor<?> constructor = rendererClass.getConstructor(new Class[] { });
      PGraphics pg = (PGraphics) constructor.newInstance();

      pg.setParent(this);
      pg.setPrimary(primary);
      if (path != null) {
        pg.setPath(savePath(path));
      }
//      pg.setQuality(sketchQuality());
//      if (!primary) {
//        surface.initImage(pg, w, h);
//      }
      pg.setSize(w, h);

      // everything worked, return it
      return pg;

    } catch (InvocationTargetException ite) {
      String msg = ite.getTargetException().getMessage();
      if ((msg != null) &&
          (msg.indexOf("no jogl in java.library.path") != -1)) {
        // Is this true anymore, since the JARs contain the native libs?
        throw new RuntimeException("The jogl library folder needs to be " +
          "specified with -Djava.library.path=/path/to/jogl");

      } else {
        printStackTrace(ite.getTargetException());
        Throwable target = ite.getTargetException();
        /*
        // removing for 3.2, we'll see
        if (platform == MACOSX) {
          target.printStackTrace(System.out);  // OS X bug (still true?)
        }
        */
        throw new RuntimeException(target.getMessage());
      }

    } catch (ClassNotFoundException cnfe) {
//      if (cnfe.getMessage().indexOf("processing.opengl.PGraphicsOpenGL") != -1) {
//        throw new RuntimeException(openglError +
//                                   " (The library .jar file is missing.)");
//      } else {
      if (external) {
        throw new RuntimeException("You need to use \"Import Library\" " +
                                   "to add " + renderer + " to your sketch.");
      } else {
        throw new RuntimeException("The " + renderer +
                                   " renderer is not in the class path.");
      }

    } catch (Exception e) {
      if ((e instanceof IllegalArgumentException) ||
          (e instanceof NoSuchMethodException) ||
          (e instanceof IllegalAccessException)) {
        if (e.getMessage().contains("cannot be <= 0")) {
          // IllegalArgumentException will be thrown if w/h is <= 0
          // http://code.google.com/p/processing/issues/detail?id=983
          throw new RuntimeException(e);

        } else {
          printStackTrace(e);
          String msg = renderer + " needs to be updated " +
            "for the current release of Processing.";
          throw new RuntimeException(msg);
        }
      } else {
        /*
        if (platform == MACOSX) {
          e.printStackTrace(System.out);  // OS X bug (still true?)
        }
        */
        printStackTrace(e);
        throw new RuntimeException(e.getMessage());
      }
    }
  }


  /** Create default renderer, likely to be resized, but needed for surface init. */
  protected PGraphics createPrimaryGraphics() {
    return makeGraphics(sketchWidth(), sketchHeight(),
                        sketchRenderer(), sketchOutputPath(), true);
  }


  /**
   * ( begin auto-generated from createImage.xml )
   *
   * Creates a new PImage (the datatype for storing images). This provides a
   * fresh buffer of pixels to play with. Set the size of the buffer with the
   * <b>width</b> and <b>height</b> parameters. The <b>format</b> parameter
   * defines how the pixels are stored. See the PImage reference for more information.
   * <br/> <br/>
   * Be sure to include all three parameters, specifying only the width and
   * height (but no format) will produce a strange error.
   * <br/> <br/>
   * Advanced users please note that createImage() should be used instead of
   * the syntax <tt>new PImage()</tt>.
   *
   * ( end auto-generated )
   * <h3>Advanced</h3>
   * Preferred method of creating new PImage objects, ensures that a
   * reference to the parent PApplet is included, which makes save() work
   * without needing an absolute path.
   *
   * @webref image
   * @param w width in pixels
   * @param h height in pixels
   * @param format Either RGB, ARGB, ALPHA (grayscale alpha channel)
   * @see PImage
   * @see PGraphics
   */
  public PImage createImage(int w, int h, int format) {
    PImage image = new PImage(w, h, format);
    image.parent = this;  // make save() work
    return image;
  }


  //////////////////////////////////////////////////////////////


  protected boolean insideDraw;

  /** Last time in nanoseconds that frameRate was checked */
  protected long frameRateLastNanos = 0;


  public void handleDraw() {
    //debug("handleDraw() " + g + " " + looping + " " + redraw + " valid:" + this.isValid() + " visible:" + this.isVisible());

    // canDraw = g != null && (looping || redraw);
    if (g == null) return;
    if (!looping && !redraw) return;
//    System.out.println("looping/redraw = " + looping + " " + redraw);

    // no longer in use by any of our renderers
//    if (!g.canDraw()) {
//      debug("g.canDraw() is false");
//      // Don't draw if the renderer is not yet ready.
//      // (e.g. OpenGL has to wait for a peer to be on screen)
//      return;
//    }

    // Store the quality setting in case it's changed during draw and the
    // drawing context needs to be re-built before the next frame.
//    int pquality = g.smooth;

    if (insideDraw) {
      System.err.println("handleDraw() called before finishing");
      System.exit(1);
    }

    insideDraw = true;
    g.beginDraw();
    if (recorder != null) {
      recorder.beginDraw();
    }

    long now = System.nanoTime();

    if (frameCount == 0) {
        // 3.0a5 should be no longer needed; handled by PSurface
        //surface.checkDisplaySize();

//        try {
        //println("Calling setup()");
      setup();
        //println("Done with setup()");

//        } catch (RendererChangeException e) {
//          // Give up, instead set the new renderer and re-attempt setup()
//          return;
//        }
//      defaultSize = false;

    } else {  // frameCount > 0, meaning an actual draw()
      // update the current frameRate

      // Calculate frameRate through average frame times, not average fps, e.g.:
      //
      // Alternating 2 ms and 20 ms frames (JavaFX or JOGL sometimes does this)
      // is around 90.91 fps (two frames in 22 ms, one frame 11 ms).
      //
      // However, averaging fps gives us: (500 fps + 50 fps) / 2 = 275 fps.
      // This is because we had 500 fps for 2 ms and 50 fps for 20 ms, but we
      // counted them with equal weight.
      //
      // If we average frame times instead, we get the right result:
      // (2 ms + 20 ms) / 2 = 11 ms per frame, which is 1000/11 = 90.91 fps.
      //
      // The counter below uses exponential moving average. To do the
      // calculation, we first convert the accumulated frame rate to average
      // frame time, then calculate the exponential moving average, and then
      // convert the average frame time back to frame rate.
      {
        // Get the frame time of the last frame
        double frameTimeSecs = (now - frameRateLastNanos) / 1e9;
        // Convert average frames per second to average frame time
        double avgFrameTimeSecs = 1.0 / frameRate;
        // Calculate exponential moving average of frame time
        final double alpha = 0.05;
        avgFrameTimeSecs = (1.0 - alpha) * avgFrameTimeSecs + alpha * frameTimeSecs;
        // Convert frame time back to frames per second
        frameRate = (float) (1.0 / avgFrameTimeSecs);
      }

      if (frameCount != 0) {
        handleMethods("pre");
      }

      // use dmouseX/Y as previous mouse pos, since this is the
      // last position the mouse was in during the previous draw.
      pmouseX = dmouseX;
      pmouseY = dmouseY;

        //println("Calling draw()");
      draw();
        //println("Done calling draw()");

      // dmouseX/Y is updated only once per frame (unlike emouseX/Y)
      dmouseX = mouseX;
      dmouseY = mouseY;

      // these are called *after* loop so that valid
      // drawing commands can be run inside them. it can't
      // be before, since a call to background() would wipe
      // out anything that had been drawn so far.
      dequeueEvents();

      handleMethods("draw");

      redraw = false;  // unset 'redraw' flag in case it was set
      // (only do this once draw() has run, not just setup())
    }
    g.endDraw();

//    if (pquality != g.smooth) {
//      surface.setSmooth(g.smooth);
//    }

    if (recorder != null) {
      recorder.endDraw();
    }
    insideDraw = false;

    if (frameCount != 0) {
      handleMethods("post");
    }

    frameRateLastNanos = now;
    frameCount++;
  }


//  /** Not official API, not guaranteed to work in the future. */
//  public boolean canDraw() {
//    return g != null && (looping || redraw);
//  }


  //////////////////////////////////////////////////////////////


/**
   * ( begin auto-generated from redraw.xml )
   *
   * Executes the code within <b>draw()</b> one time. This functions allows
   * the program to update the display window only when necessary, for
   * example when an event registered by <b>mousePressed()</b> or
   * <b>keyPressed()</b> occurs.
   * <br/><br/> structuring a program, it only makes sense to call redraw()
   * within events such as <b>mousePressed()</b>. This is because
   * <b>redraw()</b> does not run <b>draw()</b> immediately (it only sets a
   * flag that indicates an update is needed).
   * <br/><br/> <b>redraw()</b> within <b>draw()</b> has no effect because
   * <b>draw()</b> is continuously called anyway.
   *
   * ( end auto-generated )
 * @webref structure
 * @usage web_application
 * @see PApplet#draw()
 * @see PApplet#loop()
 * @see PApplet#noLoop()
 * @see PApplet#frameRate(float)
 */
  synchronized public void redraw() {
    if (!looping) {
      redraw = true;
//      if (thread != null) {
//        // wake from sleep (necessary otherwise it'll be
//        // up to 10 seconds before update)
//        if (CRUSTY_THREADS) {
//          thread.interrupt();
//        } else {
//          synchronized (blocker) {
//            blocker.notifyAll();
//          }
//        }
//      }
    }
  }

/**
   * ( begin auto-generated from loop.xml )
   *
   * Causes Processing to continuously execute the code within <b>draw()</b>.
   * If <b>noLoop()</b> is called, the code in <b>draw()</b> stops executing.
   *
   * ( end auto-generated )
 * @webref structure
 * @usage web_application
 * @see PApplet#noLoop()
 * @see PApplet#redraw()
 * @see PApplet#draw()
 */
  synchronized public void loop() {
    if (!looping) {
      looping = true;
    }
  }

/**
   * ( begin auto-generated from noLoop.xml )
   *
   * Stops Processing from continuously executing the code within
   * <b>draw()</b>. If <b>loop()</b> is called, the code in <b>draw()</b>
   * begin to run continuously again. If using <b>noLoop()</b> in
   * <b>setup()</b>, it should be the last line inside the block.
   * <br/> <br/>
   * When <b>noLoop()</b> is used, it's not possible to manipulate or access
   * the screen inside event handling functions such as <b>mousePressed()</b>
   * or <b>keyPressed()</b>. Instead, use those functions to call
   * <b>redraw()</b> or <b>loop()</b>, which will run <b>draw()</b>, which
   * can update the screen properly. This means that when noLoop() has been
   * called, no drawing can happen, and functions like saveFrame() or
   * loadPixels() may not be used.
   * <br/> <br/>
   * Note that if the sketch is resized, <b>redraw()</b> will be called to
   * update the sketch, even after <b>noLoop()</b> has been specified.
   * Otherwise, the sketch would enter an odd state until <b>loop()</b> was called.
   *
   * ( end auto-generated )
 * @webref structure
 * @usage web_application
 * @see PApplet#loop()
 * @see PApplet#redraw()
 * @see PApplet#draw()
 */
  synchronized public void noLoop() {
    if (looping) {
      looping = false;
    }
  }


  public boolean isLooping() {
    return looping;
  }


  //////////////////////////////////////////////////////////////


  BlockingQueue<Event> eventQueue = new LinkedBlockingQueue<>();
  private final Object eventQueueDequeueLock = new Object[0];


  /**
   * Add an event to the internal event queue, or process it immediately if
   * the sketch is not currently looping.
   */
  public void postEvent(processing.event.Event pe) {
    eventQueue.add(pe);

    if (!looping) {
      dequeueEvents();
    }
  }


  protected void dequeueEvents() {
    synchronized (eventQueueDequeueLock) {
      while (!eventQueue.isEmpty()) {
        Event e = eventQueue.remove();
        switch (e.getFlavor()) {
        case Event.MOUSE:
          handleMouseEvent((MouseEvent) e);
          break;
        case Event.KEY:
          handleKeyEvent((KeyEvent) e);
          break;
        }
      }
    }
  }


  //////////////////////////////////////////////////////////////


  /**
   * Actually take action based on a mouse event.
   * Internally updates mouseX, mouseY, mousePressed, and mouseEvent.
   * Then it calls the event type with no params,
   * i.e. mousePressed() or mouseReleased() that the user may have
   * overloaded to do something more useful.
   */
  protected void handleMouseEvent(MouseEvent event) {
    // http://dev.processing.org/bugs/show_bug.cgi?id=170
    // also prevents mouseExited() on the mac from hosing the mouse
    // position, because x/y are bizarre values on the exit event.
    // see also the id check below.. both of these go together.
    // Not necessary to set mouseX/Y on RELEASE events because the
    // actual position will have been set by a PRESS or DRAG event.
    // However, PRESS events might come without a preceeding move,
    // if the sketch window gains focus on that PRESS.
    final int action = event.getAction();
    if (action == MouseEvent.DRAG ||
        action == MouseEvent.MOVE ||
        action == MouseEvent.PRESS) {
      pmouseX = emouseX;
      pmouseY = emouseY;
      mouseX = event.getX();
      mouseY = event.getY();
    }

    int button = event.getButton();

    // If running on Mac OS, allow ctrl-click as right mouse.
    if (PApplet.platform == PConstants.MACOSX && event.getButton() == PConstants.LEFT) {
      if (action == MouseEvent.PRESS && event.isControlDown()) {
        macosxLeftButtonWithCtrlPressed = true;
      }
      if (macosxLeftButtonWithCtrlPressed) {
        button = PConstants.RIGHT;
        event = new MouseEvent(event.getNative(), event.getMillis(),
                               event.getAction(), event.getModifiers(),
                               event.getX(), event.getY(),
                               button, event.getCount());
      }
      if (button == MouseEvent.RELEASE) {
        macosxLeftButtonWithCtrlPressed = false;
      }
    }

    // Get the (already processed) button code
    mouseButton = button;

    /*
    // Compatibility for older code (these have AWT object params, not P5)
    if (mouseEventMethods != null) {
      // Probably also good to check this, in case anyone tries to call
      // postEvent() with an artificial event they've created.
      if (event.getNative() != null) {
        mouseEventMethods.handle(new Object[] { event.getNative() });
      }
    }
    */

    // this used to only be called on mouseMoved and mouseDragged
    // change it back if people run into trouble
    if (firstMouse) {
      pmouseX = mouseX;
      pmouseY = mouseY;
      dmouseX = mouseX;
      dmouseY = mouseY;
      firstMouse = false;
    }

    mouseEvent = event;

    // Do this up here in case a registered method relies on the
    // boolean for mousePressed.

    switch (action) {
    case MouseEvent.PRESS:
      mousePressed = true;
      break;
    case MouseEvent.RELEASE:
      mousePressed = false;
      break;
    }

    handleMethods("mouseEvent", new Object[] { event });

    switch (action) {
    case MouseEvent.PRESS:
//      mousePressed = true;
      mousePressed(event);
      break;
    case MouseEvent.RELEASE:
//      mousePressed = false;
      mouseReleased(event);
      break;
    case MouseEvent.CLICK:
      mouseClicked(event);
      break;
    case MouseEvent.DRAG:
      mouseDragged(event);
      break;
    case MouseEvent.MOVE:
      mouseMoved(event);
      break;
    case MouseEvent.ENTER:
      mouseEntered(event);
      break;
    case MouseEvent.EXIT:
      mouseExited(event);
      break;
    case MouseEvent.WHEEL:
      mouseWheel(event);
      break;
    }

    if ((action == MouseEvent.DRAG) ||
        (action == MouseEvent.MOVE)) {
      emouseX = mouseX;
      emouseY = mouseY;
    }
  }


  /**
   * ( begin auto-generated from mousePressed.xml )
   *
   * The <b>mousePressed()</b> function is called once after every time a
   * mouse button is pressed. The <b>mouseButton</b> variable (see the
   * related reference entry) can be used to determine which button has been pressed.
   *
   * ( end auto-generated )
   * <h3>Advanced</h3>
   *
   * If you must, use
   * int button = mouseEvent.getButton();
   * to figure out which button was clicked. It will be one of:
   * MouseEvent.BUTTON1, MouseEvent.BUTTON2, MouseEvent.BUTTON3
   * Note, however, that this is completely inconsistent across
   * platforms.
   * @webref input:mouse
   * @see PApplet#mouseX
   * @see PApplet#mouseY
   * @see PApplet#pmouseX
   * @see PApplet#pmouseY
   * @see PApplet#mousePressed
   * @see PApplet#mouseReleased()
   * @see PApplet#mouseClicked()
   * @see PApplet#mouseMoved()
   * @see PApplet#mouseDragged()
   * @see PApplet#mouseButton
   * @see PApplet#mouseWheel(MouseEvent)
   */
  public void mousePressed() { }


  public void mousePressed(MouseEvent event) {
    mousePressed();
  }


  /**
   * ( begin auto-generated from mouseReleased.xml )
   *
   * The <b>mouseReleased()</b> function is called every time a mouse button
   * is released.
   *
   * ( end auto-generated )
   * @webref input:mouse
   * @see PApplet#mouseX
   * @see PApplet#mouseY
   * @see PApplet#pmouseX
   * @see PApplet#pmouseY
   * @see PApplet#mousePressed
   * @see PApplet#mousePressed()
   * @see PApplet#mouseClicked()
   * @see PApplet#mouseMoved()
   * @see PApplet#mouseDragged()
   * @see PApplet#mouseButton
   * @see PApplet#mouseWheel(MouseEvent)
   */
  public void mouseReleased() { }


  public void mouseReleased(MouseEvent event) {
    mouseReleased();
  }


  /**
   * ( begin auto-generated from mouseClicked.xml )
   *
   * The <b>mouseClicked()</b> function is called once after a mouse button
   * has been pressed and then released.
   *
   * ( end auto-generated )
   * <h3>Advanced</h3>
   * When the mouse is clicked, mousePressed() will be called,
   * then mouseReleased(), then mouseClicked(). Note that
   * mousePressed is already false inside of mouseClicked().
   * @webref input:mouse
   * @see PApplet#mouseX
   * @see PApplet#mouseY
   * @see PApplet#pmouseX
   * @see PApplet#pmouseY
   * @see PApplet#mousePressed
   * @see PApplet#mousePressed()
   * @see PApplet#mouseReleased()
   * @see PApplet#mouseMoved()
   * @see PApplet#mouseDragged()
   * @see PApplet#mouseButton
   * @see PApplet#mouseWheel(MouseEvent)
   */
  public void mouseClicked() { }


  public void mouseClicked(MouseEvent event) {
    mouseClicked();
  }


  /**
   * ( begin auto-generated from mouseDragged.xml )
   *
   * The <b>mouseDragged()</b> function is called once every time the mouse
   * moves and a mouse button is pressed.
   *
   * ( end auto-generated )
   * @webref input:mouse
   * @see PApplet#mouseX
   * @see PApplet#mouseY
   * @see PApplet#pmouseX
   * @see PApplet#pmouseY
   * @see PApplet#mousePressed
   * @see PApplet#mousePressed()
   * @see PApplet#mouseReleased()
   * @see PApplet#mouseClicked()
   * @see PApplet#mouseMoved()
   * @see PApplet#mouseButton
   * @see PApplet#mouseWheel(MouseEvent)
   */
  public void mouseDragged() { }


  public void mouseDragged(MouseEvent event) {
    mouseDragged();
  }


  /**
   * ( begin auto-generated from mouseMoved.xml )
   *
   * The <b>mouseMoved()</b> function is called every time the mouse moves
   * and a mouse button is not pressed.
   *
   * ( end auto-generated )
   * @webref input:mouse
   * @see PApplet#mouseX
   * @see PApplet#mouseY
   * @see PApplet#pmouseX
   * @see PApplet#pmouseY
   * @see PApplet#mousePressed
   * @see PApplet#mousePressed()
   * @see PApplet#mouseReleased()
   * @see PApplet#mouseClicked()
   * @see PApplet#mouseDragged()
   * @see PApplet#mouseButton
   * @see PApplet#mouseWheel(MouseEvent)
   */
  public void mouseMoved() { }


  public void mouseMoved(MouseEvent event) {
    mouseMoved();
  }


  public void mouseEntered() { }


  public void mouseEntered(MouseEvent event) {
    mouseEntered();
  }


  public void mouseExited() { }


  public void mouseExited(MouseEvent event) {
    mouseExited();
  }

  /**
   * @nowebref
   */
  public void mouseWheel() { }

  /**
   * The event.getAmount() method returns negative values if the mouse wheel
   * if rotated up or away from the user and positive in the other direction.
   * On OS X with "natural" scrolling enabled, the values are opposite.
   *
   * @webref input:mouse
   * @param event the MouseEvent
   * @see PApplet#mouseX
   * @see PApplet#mouseY
   * @see PApplet#pmouseX
   * @see PApplet#pmouseY
   * @see PApplet#mousePressed
   * @see PApplet#mousePressed()
   * @see PApplet#mouseReleased()
   * @see PApplet#mouseClicked()
   * @see PApplet#mouseMoved()
   * @see PApplet#mouseDragged()
   * @see PApplet#mouseButton
   */
  public void mouseWheel(MouseEvent event) {
    mouseWheel();
  }



  //////////////////////////////////////////////////////////////


  protected void handleKeyEvent(KeyEvent event) {

    // Get rid of auto-repeating keys if desired and supported
    if (!keyRepeatEnabled && event.isAutoRepeat()) return;

    keyEvent = event;
    key = event.getKey();
    keyCode = event.getKeyCode();

    switch (event.getAction()) {
    case KeyEvent.PRESS:
      Long hash = ((long) keyCode << Character.SIZE) | key;
      if (!pressedKeys.contains(hash)) pressedKeys.add(hash);
      keyPressed = true;
      keyPressed(keyEvent);
      break;
    case KeyEvent.RELEASE:
      pressedKeys.remove(((long) keyCode << Character.SIZE) | key);
      keyPressed = !pressedKeys.isEmpty();
      keyReleased(keyEvent);
      break;
    case KeyEvent.TYPE:
      keyTyped(keyEvent);
      break;
    }

    /*
    if (keyEventMethods != null) {
      keyEventMethods.handle(new Object[] { event.getNative() });
    }
    */

    handleMethods("keyEvent", new Object[] { event });

    // if someone else wants to intercept the key, they should
    // set key to zero (or something besides the ESC).
    if (event.getAction() == KeyEvent.PRESS) {
      //if (key == java.awt.event.KeyEvent.VK_ESCAPE) {
      if (key == ESC) {
        exit();
      }
      // When running tethered to the Processing application, respond to
      // Ctrl-W (or Cmd-W) events by closing the sketch. Not enabled when
      // running independently, because this sketch may be one component
      // embedded inside an application that has its own close behavior.
      if (external &&
          event.getKeyCode() == 'W' &&
          ((event.isMetaDown() && platform == MACOSX) ||
           (event.isControlDown() && platform != MACOSX))) {
        // Can't use this native stuff b/c the native event might be NEWT
//      if (external && event.getNative() instanceof java.awt.event.KeyEvent &&
//          ((java.awt.event.KeyEvent) event.getNative()).getModifiers() ==
//            Toolkit.getDefaultToolkit().getMenuShortcutKeyMask() &&
//          event.getKeyCode() == 'W') {
        exit();
      }
    }
  }


  /**
   *
   * ( begin auto-generated from keyPressed.xml )
   *
   * The <b>keyPressed()</b> function is called once every time a key is
   * pressed. The key that was pressed is stored in the <b>key</b> variable.
   * <br/> <br/>
   * For non-ASCII keys, use the <b>keyCode</b> variable. The keys included
   * in the ASCII specification (BACKSPACE, TAB, ENTER, RETURN, ESC, and
   * DELETE) do not require checking to see if they key is coded, and you
   * should simply use the <b>key</b> variable instead of <b>keyCode</b> If
   * you're making cross-platform projects, note that the ENTER key is
   * commonly used on PCs and Unix and the RETURN key is used instead on
   * Macintosh. Check for both ENTER and RETURN to make sure your program
   * will work for all platforms.
   * <br/> <br/>
   * Because of how operating systems handle key repeats, holding down a key
   * may cause multiple calls to keyPressed() (and keyReleased() as well).
   * The rate of repeat is set by the operating system and how each computer
   * is configured.
   *
   * ( end auto-generated )
   * <h3>Advanced</h3>
   *
   * Called each time a single key on the keyboard is pressed.
   * Because of how operating systems handle key repeats, holding
   * down a key will cause multiple calls to keyPressed(), because
   * the OS repeat takes over.
   * <p>
   * Examples for key handling:
   * (Tested on Windows XP, please notify if different on other
   * platforms, I have a feeling Mac OS and Linux may do otherwise)
   * <PRE>
   * 1. Pressing 'a' on the keyboard:
   *    keyPressed  with key == 'a' and keyCode == 'A'
   *    keyTyped    with key == 'a' and keyCode ==  0
   *    keyReleased with key == 'a' and keyCode == 'A'
   *
   * 2. Pressing 'A' on the keyboard:
   *    keyPressed  with key == 'A' and keyCode == 'A'
   *    keyTyped    with key == 'A' and keyCode ==  0
   *    keyReleased with key == 'A' and keyCode == 'A'
   *
   * 3. Pressing 'shift', then 'a' on the keyboard (caps lock is off):
   *    keyPressed  with key == CODED and keyCode == SHIFT
   *    keyPressed  with key == 'A'   and keyCode == 'A'
   *    keyTyped    with key == 'A'   and keyCode == 0
   *    keyReleased with key == 'A'   and keyCode == 'A'
   *    keyReleased with key == CODED and keyCode == SHIFT
   *
   * 4. Holding down the 'a' key.
   *    The following will happen several times,
   *    depending on your machine's "key repeat rate" settings:
   *    keyPressed  with key == 'a' and keyCode == 'A'
   *    keyTyped    with key == 'a' and keyCode ==  0
   *    When you finally let go, you'll get:
   *    keyReleased with key == 'a' and keyCode == 'A'
   *
   * 5. Pressing and releasing the 'shift' key
   *    keyPressed  with key == CODED and keyCode == SHIFT
   *    keyReleased with key == CODED and keyCode == SHIFT
   *    (note there is no keyTyped)
   *
   * 6. Pressing the tab key in an applet with Java 1.4 will
   *    normally do nothing, but PApplet dynamically shuts
   *    this behavior off if Java 1.4 is in use (tested 1.4.2_05 Windows).
   *    Java 1.1 (Microsoft VM) passes the TAB key through normally.
   *    Not tested on other platforms or for 1.3.
   * </PRE>
   * @webref input:keyboard
   * @see PApplet#key
   * @see PApplet#keyCode
   * @see PApplet#keyPressed
   * @see PApplet#keyReleased()
   */
  public void keyPressed() { }


  public void keyPressed(KeyEvent event) {
    keyPressed();
  }


  /**
   * ( begin auto-generated from keyReleased.xml )
   *
   * The <b>keyReleased()</b> function is called once every time a key is
   * released. The key that was released will be stored in the <b>key</b>
   * variable. See <b>key</b> and <b>keyReleased</b> for more information.
   *
   * ( end auto-generated )
   * @webref input:keyboard
   * @see PApplet#key
   * @see PApplet#keyCode
   * @see PApplet#keyPressed
   * @see PApplet#keyPressed()
   */
  public void keyReleased() { }


  public void keyReleased(KeyEvent event) {
    keyReleased();
  }


  /**
   * ( begin auto-generated from keyTyped.xml )
   *
   * The <b>keyTyped()</b> function is called once every time a key is
   * pressed, but action keys such as Ctrl, Shift, and Alt are ignored.
   * Because of how operating systems handle key repeats, holding down a key
   * will cause multiple calls to <b>keyTyped()</b>, the rate is set by the
   * operating system and how each computer is configured.
   *
   * ( end auto-generated )
   * @webref input:keyboard
   * @see PApplet#keyPressed
   * @see PApplet#key
   * @see PApplet#keyCode
   * @see PApplet#keyReleased()
   */
  public void keyTyped() { }


  public void keyTyped(KeyEvent event) {
    keyTyped();
  }



  //////////////////////////////////////////////////////////////

  // i am focused man, and i'm not afraid of death.
  // and i'm going all out. i circle the vultures in a van
  // and i run the block.


  public void focusGained() { }


  public void focusLost() {
    // TODO: if user overrides this without calling super it's not gonna work
    pressedKeys.clear();
  }



  //////////////////////////////////////////////////////////////

  // getting the time


  /**
   * ( begin auto-generated from millis.xml )
   *
   * Returns the number of milliseconds (thousandths of a second) since
   * starting an applet. This information is often used for timing animation
   * sequences.
   *
   * ( end auto-generated )
   *
   * <h3>Advanced</h3>
   * <p>
   * This is a function, rather than a variable, because it may
   * change multiple times per frame.
   *
   * @webref input:time_date
   * @see PApplet#second()
   * @see PApplet#minute()
   * @see PApplet#hour()
   * @see PApplet#day()
   * @see PApplet#month()
   * @see PApplet#year()
   *
   */
  public int millis() {
    return (int) (System.currentTimeMillis() - millisOffset);
  }

  /**
   * ( begin auto-generated from second.xml )
   *
   * Processing communicates with the clock on your computer. The
   * <b>second()</b> function returns the current second as a value from 0 - 59.
   *
   * ( end auto-generated )
   * @webref input:time_date
   * @see PApplet#millis()
   * @see PApplet#minute()
   * @see PApplet#hour()
   * @see PApplet#day()
   * @see PApplet#month()
   * @see PApplet#year()
   * */
  static public int second() {
    return Calendar.getInstance().get(Calendar.SECOND);
  }

  /**
   * ( begin auto-generated from minute.xml )
   *
   * Processing communicates with the clock on your computer. The
   * <b>minute()</b> function returns the current minute as a value from 0 - 59.
   *
   * ( end auto-generated )
   *
   * @webref input:time_date
   * @see PApplet#millis()
   * @see PApplet#second()
   * @see PApplet#hour()
   * @see PApplet#day()
   * @see PApplet#month()
   * @see PApplet#year()
   *
   * */
  static public int minute() {
    return Calendar.getInstance().get(Calendar.MINUTE);
  }

  /**
   * ( begin auto-generated from hour.xml )
   *
   * Processing communicates with the clock on your computer. The
   * <b>hour()</b> function returns the current hour as a value from 0 - 23.
   *
   * ( end auto-generated )
   * @webref input:time_date
   * @see PApplet#millis()
   * @see PApplet#second()
   * @see PApplet#minute()
   * @see PApplet#day()
   * @see PApplet#month()
   * @see PApplet#year()
   *
   */
  static public int hour() {
    return Calendar.getInstance().get(Calendar.HOUR_OF_DAY);
  }

  /**
   * ( begin auto-generated from day.xml )
   *
   * Processing communicates with the clock on your computer. The
   * <b>day()</b> function returns the current day as a value from 1 - 31.
   *
   * ( end auto-generated )
   * <h3>Advanced</h3>
   * Get the current day of the month (1 through 31).
   * <p>
   * If you're looking for the day of the week (M-F or whatever)
   * or day of the year (1..365) then use java's Calendar.get()
   *
   * @webref input:time_date
   * @see PApplet#millis()
   * @see PApplet#second()
   * @see PApplet#minute()
   * @see PApplet#hour()
   * @see PApplet#month()
   * @see PApplet#year()
   */
  static public int day() {
    return Calendar.getInstance().get(Calendar.DAY_OF_MONTH);
  }

  /**
   * ( begin auto-generated from month.xml )
   *
   * Processing communicates with the clock on your computer. The
   * <b>month()</b> function returns the current month as a value from 1 - 12.
   *
   * ( end auto-generated )
   *
   * @webref input:time_date
   * @see PApplet#millis()
   * @see PApplet#second()
   * @see PApplet#minute()
   * @see PApplet#hour()
   * @see PApplet#day()
   * @see PApplet#year()
   */
  static public int month() {
    // months are number 0..11 so change to colloquial 1..12
    return Calendar.getInstance().get(Calendar.MONTH) + 1;
  }

  /**
   * ( begin auto-generated from year.xml )
   *
   * Processing communicates with the clock on your computer. The
   * <b>year()</b> function returns the current year as an integer (2003,
   * 2004, 2005, etc).
   *
   * ( end auto-generated )
   * The <b>year()</b> function returns the current year as an integer (2003, 2004, 2005, etc).
   *
   * @webref input:time_date
   * @see PApplet#millis()
   * @see PApplet#second()
   * @see PApplet#minute()
   * @see PApplet#hour()
   * @see PApplet#day()
   * @see PApplet#month()
   */
  static public int year() {
    return Calendar.getInstance().get(Calendar.YEAR);
  }


  //////////////////////////////////////////////////////////////

  // controlling time (playing god)


  /**
   * ( begin auto-generated from delay.xml )
   *
   * The delay() function causes the program to halt for a specified time.
   * Delay times are specified in thousandths of a second. For example,
   * running delay(3000) will stop the program for three seconds and
   * delay(500) will stop the program for a half-second.
   *
   * The screen only updates when the end of draw() is reached, so delay()
   * cannot be used to slow down drawing. For instance, you cannot use delay()
   * to control the timing of an animation.
   *
   * The delay() function should only be used for pausing scripts (i.e.
   * a script that needs to pause a few seconds before attempting a download,
   * or a sketch that needs to wait a few milliseconds before reading from
   * the serial port).
   *
   * ( end auto-generated )
   * @webref environment
   * @param napTime milliseconds to pause before running draw() again
   * @see PApplet#frameRate
   * @see PApplet#draw()
   */
  public void delay(int napTime) {
    //if (frameCount != 0) {
    //if (napTime > 0) {
    try {
      Thread.sleep(napTime);
    } catch (InterruptedException e) { }
    //}
    //}
  }


  /**
   * ( begin auto-generated from frameRate.xml )
   *
   * Specifies the number of frames to be displayed every second. If the
   * processor is not fast enough to maintain the specified rate, it will not
   * be achieved. For example, the function call <b>frameRate(30)</b> will
   * attempt to refresh 30 times a second. It is recommended to set the frame
   * rate within <b>setup()</b>. The default rate is 60 frames per second.
   *
   * ( end auto-generated )
   * @webref environment
   * @param fps number of desired frames per second
   * @see PApplet#frameRate
   * @see PApplet#frameCount
   * @see PApplet#setup()
   * @see PApplet#draw()
   * @see PApplet#loop()
   * @see PApplet#noLoop()
   * @see PApplet#redraw()
   */
  public void frameRate(float fps) {
    surface.setFrameRate(fps);
  }


  //////////////////////////////////////////////////////////////


  /**
   * Links to a webpage either in the same window or in a new window. The
   * complete URL must be specified.
   *
   * <h3>Advanced</h3>
   * Link to an external page without all the muss.
   * <p>
   * When run with an applet, uses the browser to open the url,
   * for applications, attempts to launch a browser with the url.
   *
   * @param url the complete URL, as a String in quotes
   */
  public void link(String url) {
    try {
      if (Desktop.isDesktopSupported()) {
        Desktop.getDesktop().browse(new URI(url));
      } else {
        // Just pass it off to open() and hope for the best
        launch(url);
      }
    } catch (IOException e) {
      printStackTrace(e);
    } catch (URISyntaxException e) {
      printStackTrace(e);
    }
  }


  static String openLauncher;


  /**
   * ( begin auto-generated from launch.xml )
   *
   * Attempts to open an application or file using your platform's launcher.
   * The <b>file</b> parameter is a String specifying the file name and
   * location. The location parameter must be a full path name, or the name
   * of an executable in the system's PATH. In most cases, using a full path
   * is the best option, rather than relying on the system PATH. Be sure to
   * make the file executable before attempting to open it (chmod +x).
   * <br/> <br/>
   * The <b>args</b> parameter is a String or String array which is passed to
   * the command line. If you have multiple parameters, e.g. an application
   * and a document, or a command with multiple switches, use the version
   * that takes a String array, and place each individual item in a separate
   * element.
   * <br/> <br/>
   * If args is a String (not an array), then it can only be a single file or
   * application with no parameters. It's not the same as executing that
   * String using a shell. For instance, launch("javac -help") will not work
   * properly.
   * <br/> <br/>
   * This function behaves differently on each platform. On Windows, the
   * parameters are sent to the Windows shell via "cmd /c". On Mac OS X, the
   * "open" command is used (type "man open" in Terminal.app for
   * documentation). On Linux, it first tries gnome-open, then kde-open, but
   * if neither are available, it sends the command to the shell without any
   * alterations.
   * <br/> <br/>
   * For users familiar with Java, this is not quite the same as
   * Runtime.exec(), because the launcher command is prepended. Instead, the
   * <b>exec(String[])</b> function is a shortcut for
   * Runtime.getRuntime.exec(String[]).
   *
   * ( end auto-generated )
   * @webref input:files
   * @param args arguments to the launcher, eg. a filename.
   * @usage Application
   */
  static public Process launch(String... args) {
    String[] params = null;

    if (platform == WINDOWS) {
      // just launching the .html file via the shell works
      // but make sure to chmod +x the .html files first
      // also place quotes around it in case there's a space
      // in the user.dir part of the url
      params = new String[] { "cmd", "/c" };

    } else if (platform == MACOSX) {
      params = new String[] { "open" };

    } else if (platform == LINUX) {
      // xdg-open is in the Free Desktop Specification and really should just
      // work on desktop Linux. Not risking it though.
      final String[] launchers = { "xdg-open", "gnome-open", "kde-open" };
      for (String launcher : launchers) {
        if (openLauncher != null) break;
        try {
          Process p = Runtime.getRuntime().exec(new String[] { launcher });
          /*int result =*/ p.waitFor();
          // Not installed will throw an IOException (JDK 1.4.2, Ubuntu 7.04)
          openLauncher = launcher;
        } catch (Exception e) { }
      }
      if (openLauncher == null) {
        System.err.println("Could not find xdg-open, gnome-open, or kde-open: " +
                           "the open() command may not work.");
      }
      if (openLauncher != null) {
        params = new String[] { openLauncher };
      }
    //} else {  // give up and just pass it to Runtime.exec()
      //open(new String[] { filename });
      //params = new String[] { filename };
    }
    if (params != null) {
      // If the 'open', 'gnome-open' or 'cmd' are already included
      if (params[0].equals(args[0])) {
        // then don't prepend those params again
        return exec(args);
      } else {
        params = concat(params, args);
        return exec(params);
      }
    } else {
      return exec(args);
    }
  }


  /**
   * Pass a set of arguments directly to the command line. Uses Java's
   * <A HREF="https://docs.oracle.com/javase/8/docs/api/java/lang/Runtime.html#exec-java.lang.String:A-">Runtime.exec()</A>
   * method. This is different from the <A HREF="https://processing.org/reference/launch_.html">launch()</A>
   * method, which uses the operating system's launcher to open the files.
   * It's always a good idea to use a full path to the executable here.
   * <pre>
   * exec("/usr/bin/say", "welcome to the command line");
   * </pre>
   * Or if you want to wait until it's completed, something like this:
   * <pre>
   * Process p = exec("/usr/bin/say", "waiting until done");
   * try {
   *   int result = p.waitFor();
   *   println("the process returned " + result);
   * } catch (InterruptedException e) { }
   * </pre>
   * You can also get the system output and error streams from the Process
   * object, but that's more that we'd like to cover here.
   * @return a <A HREF="https://docs.oracle.com/javase/8/docs/api/java/lang/Process.html">Process</A> object
   */
  static public Process exec(String... args) {
    try {
      return Runtime.getRuntime().exec(args);
    } catch (Exception e) {
      throw new RuntimeException("Exception while attempting " + join(args, ' '), e);
    }
  }


  static class LineThread extends Thread {
    InputStream input;
    StringList output;


    LineThread(InputStream input, StringList output) {
      this.input = input;
      this.output = output;
      start();
    }

    @Override
    public void run() {
      // It's not sufficient to use BufferedReader, because if the app being
      // called fills up stdout or stderr to quickly, the app will hang.
      // Instead, write to a byte[] array and then parse it once finished.
      try {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        saveStream(baos, input);
        BufferedReader reader =
          createReader(new ByteArrayInputStream(baos.toByteArray()));
        String line;
        while ((line = reader.readLine()) != null) {
          output.append(line);
        }
      } catch (IOException e) {
        throw new RuntimeException(e);
      }
    }
  }


  /**
   * Alternative version of exec() that retrieves stdout and stderr into the
   * StringList objects provided. This is a convenience function that handles
   * simple exec() calls. If the results will be more than a couple lines,
   * you shouldn't use this function, you should use a more elaborate method
   * that makes use of proper threading (to drain the shell output) and error
   * handling to address the many things that can go wrong within this method.
   *
   * @param stdout a non-null StringList object to be filled with any output
   * @param stderr a non-null StringList object to be filled with error lines
   * @param args each argument to be passed as a series of String objects
   * @return the result returned from the application, or -1 if an Exception
   *         occurs before the application is able to return a result.
   */
  static public int exec(StringList stdout, StringList stderr, String... args) {
    Process p = exec(args);

    Thread outThread = new LineThread(p.getInputStream(), stdout);
    Thread errThread = new LineThread(p.getErrorStream(), stderr);
    /*
    final InputStream err = p.getErrorStream();
    final InputStream out = p.getInputStream();
    Thread outThread = new Thread(() ->  {
      ByteArrayOutputStream baos = new ByteArrayOutputStream();
      String line;
      try {
        saveStream(baos, out);
        BufferedReader err2 = createReader(new ByteArrayInputStream(baos.toByteArray()));
        while ((line = err2.readLine()) != null) {
          stdout.append(line);
        }
      } catch (IOException e) {
        e.printStackTrace();
        throw new RuntimeException(e);
      }
    });
    outThread.start();

    Thread errThread = new Thread(() ->  {
      ByteArrayOutputStream baos = new ByteArrayOutputStream();
      String line;
      try {
        saveStream(baos, err);
        BufferedReader err2 = createReader(new ByteArrayInputStream(baos.toByteArray()));
        while ((line = err2.readLine()) != null) {
          stderr.append(line);
        }
      } catch (IOException e) {
        e.printStackTrace();
        throw new RuntimeException(e);
      }
    });
    errThread.start();
    */

    try {
      int result = p.waitFor();
      outThread.join();
      errThread.join();
      return result;

    } catch (InterruptedException e) {
      // Throwing the exception here because we can't give a valid 'result'
      throw new RuntimeException(e);
    }
  }


  /**
   * Same as exec() above, but prefixes the call with a shell.
   */
  static public int shell(StringList stdout, StringList stderr, String... args) {
    String shell;
    String runCmd;
    StringList argList = new StringList();
    if (platform == WINDOWS) {
      shell = System.getenv("COMSPEC");
      runCmd = "/C";
    } else {
      shell = "/bin/sh";
      runCmd = "-c";
      // attempt emulate the behavior of an interactive shell
      // can't use -i or -l since the version of bash shipped with macOS does not support this together with -c
      // also we want to make sure no motd or similar gets returned as stdout
      argList.append("if [ -f /etc/profile ]; then . /etc/profile >/dev/null 2>&1; fi;");
      argList.append("if [ -f ~/.bash_profile ]; then . ~/.bash_profile >/dev/null 2>&1; elif [ -f ~/.bash_profile ]; then . ~/.bash_profile >/dev/null 2>&1; elif [ -f ~/.profile ]; then ~/.profile >/dev/null 2>&1; fi;");
    }
    for (String arg : args) {
      argList.append(arg);
    }
    return exec(stdout, stderr, shell, runCmd, argList.join(" "));
  }


  /*
  static private final String shellQuoted(String arg) {
    if (arg.indexOf(' ') != -1) {
      // check to see if already quoted
      if ((arg.charAt(0) != '\"' || arg.charAt(arg.length()-1) != '\"') &&
          (arg.charAt(0) != '\'' || arg.charAt(arg.length()-1) != '\'')) {

        // see which quotes we can use
        if (arg.indexOf('\"') == -1) {
          // if no double quotes, try those first
          return "\"" + arg + "\"";

        } else if (arg.indexOf('\'') == -1) {
          // if no single quotes, let's use those
          return "'" + arg + "'";
        }
      }
    }
    return arg;
  }
  */


  //////////////////////////////////////////////////////////////


  /**
   * Better way of handling e.printStackTrace() calls so that they can be
   * handled by subclasses as necessary.
   */
  protected void printStackTrace(Throwable t) {
    t.printStackTrace();
  }


  /**
   * Function for an applet/application to kill itself and
   * display an error. Mostly this is here to be improved later.
   */
  public void die(String what) {
    dispose();
    throw new RuntimeException(what);
  }


  /**
   * Same as above but with an exception. Also needs work.
   */
  public void die(String what, Exception e) {
    if (e != null) e.printStackTrace();
    die(what);
  }


  /**
   * ( begin auto-generated from exit.xml )
   *
   * Quits/stops/exits the program. Programs without a <b>draw()</b> function
   * exit automatically after the last line has run, but programs with
   * <b>draw()</b> run continuously until the program is manually stopped or
   * <b>exit()</b> is run.<br />
   * <br />
   * Rather than terminating immediately, <b>exit()</b> will cause the sketch
   * to exit after <b>draw()</b> has completed (or after <b>setup()</b>
   * completes if called during the <b>setup()</b> function).<br />
   * <br />
   * For Java programmers, this is <em>not</em> the same as System.exit().
   * Further, System.exit() should not be used because closing out an
   * application while <b>draw()</b> is running may cause a crash
   * (particularly with P3D).
   *
   * ( end auto-generated )
   * @webref structure
   */
  public void exit() {
    if (surface.isStopped()) {
      // exit immediately, dispose() has already been called,
      // meaning that the main thread has long since exited
      exitActual();

    } else if (looping) {
      // dispose() will be called as the thread exits
      finished = true;
      // tell the code to call exitActual() to do a System.exit()
      // once the next draw() has completed
      exitCalled = true;

    } else if (!looping) {
      // if not looping, shut down things explicitly,
      // because the main thread will be sleeping
      dispose();

      // now get out
      exitActual();
    }
  }


  public boolean exitCalled() {
    return exitCalled;
  }


  /**
   * Some subclasses (I'm looking at you, processing.py) might wish to do something
   * other than actually terminate the JVM. This gives them a chance to do whatever
   * they have in mind when cleaning up.
   */
  public void exitActual() {
    try {
      System.exit(0);
    } catch (SecurityException e) {
      // don't care about applet security exceptions
    }
  }


  /**
   * Called to dispose of resources and shut down the sketch.
   * Destroys the thread, dispose the renderer,and notify listeners.
   * <p>
   * Not to be called or overriden by users. If called multiple times,
   * will only notify listeners once. Register a dispose listener instead.
   */
  public void dispose() {
    // moved here from stop()
    finished = true;  // let the sketch know it is shut down time

    // don't run the disposers twice
    if (surface.stopThread()) {

      // shut down renderer
      if (g != null) {
        g.dispose();
      }
      // run dispose() methods registered by libraries
      handleMethods("dispose");
    }

    if (platform == MACOSX) {
      try {
        final String td = "processing.core.ThinkDifferent";
        final Class<?> thinkDifferent = getClass().getClassLoader().loadClass(td);
        thinkDifferent.getMethod("cleanup").invoke(null);
      } catch (Exception e) {
        e.printStackTrace();
      }
    }

  }



  //////////////////////////////////////////////////////////////


  /**
   * Call a method in the current class based on its name.
   * <p/>
   * Note that the function being called must be public. Inside the PDE,
   * 'public' is automatically added, but when used without the preprocessor,
   * (like from Eclipse) you'll have to do it yourself.
   */
  public void method(String name) {
    try {
      Method method = getClass().getMethod(name, new Class[] {});
      method.invoke(this, new Object[] { });

    } catch (IllegalArgumentException e) {
      e.printStackTrace();
    } catch (IllegalAccessException e) {
      e.printStackTrace();
    } catch (InvocationTargetException e) {
      e.getTargetException().printStackTrace();
    } catch (NoSuchMethodException nsme) {
      System.err.println("There is no public " + name + "() method " +
                         "in the class " + getClass().getName());
    } catch (Exception e) {
      e.printStackTrace();
    }
  }


  /**
   * Launch a new thread and call the specified function from that new thread.
   * This is a very simple way to do a thread without needing to get into
   * classes, runnables, etc.
   * <p/>
   * Note that the function being called must be public. Inside the PDE,
   * 'public' is automatically added, but when used without the preprocessor,
   * (like from Eclipse) you'll have to do it yourself.
   *
   * @webref structure
   * @usage Application
   * @param name name of the function to be executed in a separate thread
   * @see PApplet#setup()
   * @see PApplet#draw()
   * @see PApplet#loop()
   * @see PApplet#noLoop()
   */
  public void thread(final String name) {
    Thread later = new Thread() {
      @Override
      public void run() {
        method(name);
      }
    };
    later.start();
  }



  //////////////////////////////////////////////////////////////

  // SCREEN GRABASS


  /**
   * ( begin auto-generated from save.xml )
   *
   * Saves an image from the display window. Images are saved in TIFF, TARGA,
   * JPEG, and PNG format depending on the extension within the
   * <b>filename</b> parameter. For example, "image.tif" will have a TIFF
   * image and "image.png" will save a PNG image. If no extension is included
   * in the filename, the image will save in TIFF format and <b>.tif</b> will
   * be added to the name. These files are saved to the sketch's folder,
   * which may be opened by selecting "Show sketch folder" from the "Sketch"
   * menu. It is not possible to use <b>save()</b> while running the program
   * in a web browser.
   * <br/> images saved from the main drawing window will be opaque. To save
   * images without a background, use <b>createGraphics()</b>.
   *
   * ( end auto-generated )
   * @webref output:image
   * @param filename any sequence of letters and numbers
   * @see PApplet#saveFrame()
   * @see PApplet#createGraphics(int, int, String)
   */
  public void save(String filename) {
    g.save(savePath(filename));
  }


  /**
   */
  public void saveFrame() {
    try {
      g.save(savePath("screen-" + nf(frameCount, 4) + ".tif"));
    } catch (SecurityException se) {
      System.err.println("Can't use saveFrame() when running in a browser, " +
                         "unless using a signed applet.");
    }
  }


  /**
   * ( begin auto-generated from saveFrame.xml )
   *
   * Saves a numbered sequence of images, one image each time the function is
   * run. To save an image that is identical to the display window, run the
   * function at the end of <b>draw()</b> or within mouse and key events such
   * as <b>mousePressed()</b> and <b>keyPressed()</b>. If <b>saveFrame()</b>
   * is called without parameters, it will save the files as screen-0000.tif,
   * screen-0001.tif, etc. It is possible to specify the name of the sequence
   * with the <b>filename</b> parameter and make the choice of saving TIFF,
   * TARGA, PNG, or JPEG files with the <b>ext</b> parameter. These image
   * sequences can be loaded into programs such as Apple's QuickTime software
   * and made into movies. These files are saved to the sketch's folder,
   * which may be opened by selecting "Show sketch folder" from the "Sketch"
   * menu.<br />
   * <br />
   * It is not possible to use saveXxxxx() functions inside a web browser
   * unless the sketch is <a
   * href="http://wiki.processing.org/w/Sign_an_Applet">signed applet</A>. To
   * save a file back to a server, see the <a
   * href="http://wiki.processing.org/w/Saving_files_to_a_web-server">save to
   * web</A> code snippet on the Processing Wiki.<br/>
   * <br/ >
   * All images saved from the main drawing window will be opaque. To save
   * images without a background, use <b>createGraphics()</b>.
   *
   * ( end auto-generated )
   * @webref output:image
   * @see PApplet#save(String)
   * @see PApplet#createGraphics(int, int, String, String)
   * @see PApplet#frameCount
   * @param filename any sequence of letters or numbers that ends with either ".tif", ".tga", ".jpg", or ".png"
   */
  public void saveFrame(String filename) {
    try {
      g.save(savePath(insertFrame(filename)));
    } catch (SecurityException se) {
      System.err.println("Can't use saveFrame() when running in a browser, " +
                         "unless using a signed applet.");
    }
  }


  /**
   * Check a string for #### signs to see if the frame number should be
   * inserted. Used for functions like saveFrame() and beginRecord() to
   * replace the # marks with the frame number. If only one # is used,
   * it will be ignored, under the assumption that it's probably not
   * intended to be the frame number.
   */
  public String insertFrame(String what) {
    int first = what.indexOf('#');
    int last = what.lastIndexOf('#');

    if ((first != -1) && (last - first > 0)) {
      String prefix = what.substring(0, first);
      int count = last - first + 1;
      String suffix = what.substring(last + 1);
      return prefix + nf(frameCount, count) + suffix;
    }
    return what;  // no change
  }



  //////////////////////////////////////////////////////////////

  // CURSOR

  //


  /**
   * Set the cursor type
   * @param kind either ARROW, CROSS, HAND, MOVE, TEXT, or WAIT
   */
  public void cursor(int kind) {
    surface.setCursor(kind);
  }


  /**
   * Replace the cursor with the specified PImage. The x- and y-
   * coordinate of the center will be the center of the image.
   */
  public void cursor(PImage img) {
    cursor(img, img.width/2, img.height/2);
  }


  /**
   * ( begin auto-generated from cursor.xml )
   *
   * Sets the cursor to a predefined symbol, an image, or makes it visible if
   * already hidden. If you are trying to set an image as the cursor, it is
   * recommended to make the size 16x16 or 32x32 pixels. It is not possible
   * to load an image as the cursor if you are exporting your program for the
   * Web and not all MODES work with all Web browsers. The values for
   * parameters <b>x</b> and <b>y</b> must be less than the dimensions of the image.
   * <br /> <br />
   * Setting or hiding the cursor generally does not work with "Present" mode
   * (when running full-screen).
   *
   * ( end auto-generated )
   * <h3>Advanced</h3>
   * Set a custom cursor to an image with a specific hotspot.
   * Only works with JDK 1.2 and later.
   * Currently seems to be broken on Java 1.4 for Mac OS X
   * <p>
   * Based on code contributed by Amit Pitaru, plus additional
   * code to handle Java versions via reflection by Jonathan Feinberg.
   * Reflection removed for release 0128 and later.
   * @webref environment
   * @see PApplet#noCursor()
   * @param img any variable of type PImage
   * @param x the horizontal active spot of the cursor
   * @param y the vertical active spot of the cursor
   */
  public void cursor(PImage img, int x, int y) {
    surface.setCursor(img, x, y);
  }


  /**
   * Show the cursor after noCursor() was called.
   * Notice that the program remembers the last set cursor type
   */
  public void cursor() {
    surface.showCursor();
  }


  /**
   * ( begin auto-generated from noCursor.xml )
   *
   * Hides the cursor from view. Will not work when running the program in a
   * web browser or when running in full screen (Present) mode.
   *
   * ( end auto-generated )
   * <h3>Advanced</h3>
   * Hide the cursor by creating a transparent image
   * and using it as a custom cursor.
   * @webref environment
   * @see PApplet#cursor()
   * @usage Application
   */
  public void noCursor() {
    surface.hideCursor();
  }


  //////////////////////////////////////////////////////////////

/**
   * ( begin auto-generated from print.xml )
   *
   * Writes to the console area of the Processing environment. This is often
   * helpful for looking at the data a program is producing. The companion
   * function <b>println()</b> works like <b>print()</b>, but creates a new
   * line of text for each call to the function. Individual elements can be
   * separated with quotes ("") and joined with the addition operator (+).<br />
   * <br />
   * Beginning with release 0125, to print the contents of an array, use
   * println(). There's no sensible way to do a <b>print()</b> of an array,
   * because there are too many possibilities for how to separate the data
   * (spaces, commas, etc). If you want to print an array as a single line,
   * use <b>join()</b>. With <b>join()</b>, you can choose any delimiter you
   * like and <b>print()</b> the result.<br />
   * <br />
   * Using <b>print()</b> on an object will output <b>null</b>, a memory
   * location that may look like "@10be08," or the result of the
   * <b>toString()</b> method from the object that's being printed. Advanced
   * users who want more useful output when calling <b>print()</b> on their
   * own classes can add a <b>toString()</b> method to the class that returns
   * a String.
   *
   * ( end auto-generated )
 * @webref output:text_area
 * @usage IDE
 * @param what data to print to console
 * @see PApplet#println()
 * @see PApplet#printArray(Object)
 * @see PApplet#join(String[], char)
 */
  static public void print(byte what) {
    System.out.print(what);
    System.out.flush();
  }

  static public void print(boolean what) {
    System.out.print(what);
    System.out.flush();
  }

  static public void print(char what) {
    System.out.print(what);
    System.out.flush();
  }

  static public void print(int what) {
    System.out.print(what);
    System.out.flush();
  }

  static public void print(long what) {
    System.out.print(what);
    System.out.flush();
  }

  static public void print(float what) {
    System.out.print(what);
    System.out.flush();
  }

  static public void print(double what) {
    System.out.print(what);
    System.out.flush();
  }

  static public void print(String what) {
    System.out.print(what);
    System.out.flush();
  }

  /**
   * @param variables list of data, separated by commas
   */
  static public void print(Object... variables) {
    StringBuilder sb = new StringBuilder();
    for (Object o : variables) {
      if (sb.length() != 0) {
        sb.append(" ");
      }
      if (o == null) {
        sb.append("null");
      } else {
        sb.append(o.toString());
      }
    }
    System.out.print(sb.toString());
  }


  /*
  static public void print(Object what) {
    if (what == null) {
      // special case since this does fuggly things on > 1.1
      System.out.print("null");
    } else {
      System.out.println(what.toString());
    }
  }
  */


  /**
   * ( begin auto-generated from println.xml )
   *
   * Writes to the text area of the Processing environment's console. This is
   * often helpful for looking at the data a program is producing. Each call
   * to this function creates a new line of output. Individual elements can
   * be separated with quotes ("") and joined with the string concatenation
   * operator (+). See <b>print()</b> for more about what to expect in the output.
   * <br/><br/> <b>println()</b> on an array (by itself) will write the
   * contents of the array to the console. This is often helpful for looking
   * at the data a program is producing. A new line is put between each
   * element of the array. This function can only print one dimensional
   * arrays. For arrays with higher dimensions, the result will be closer to
   * that of <b>print()</b>.
   *
   * ( end auto-generated )
 * @webref output:text_area
 * @usage IDE
 * @see PApplet#print(byte)
 * @see PApplet#printArray(Object)
 */
  static public void println() {
    System.out.println();
  }


/**
 * @param what data to print to console
 */
  static public void println(byte what) {
    System.out.println(what);
    System.out.flush();
  }

  static public void println(boolean what) {
    System.out.println(what);
    System.out.flush();
  }

  static public void println(char what) {
    System.out.println(what);
    System.out.flush();
  }

  static public void println(int what) {
    System.out.println(what);
    System.out.flush();
  }

  static public void println(long what) {
    System.out.println(what);
    System.out.flush();
  }

  static public void println(float what) {
    System.out.println(what);
    System.out.flush();
  }

  static public void println(double what) {
    System.out.println(what);
    System.out.flush();
  }

  static public void println(String what) {
    System.out.println(what);
    System.out.flush();
  }

  /**
   * @param variables list of data, separated by commas
   */
  static public void println(Object... variables) {
//    System.out.println("got " + variables.length + " variables");
    print(variables);
    println();
  }


  /*
  // Breaking this out since the compiler doesn't know the difference between
  // Object... and just Object (with an array passed in). This should take care
  // of the confusion for at least the most common case (a String array).
  // On second thought, we're going the printArray() route, since the other
  // object types are also used frequently.
  static public void println(String[] array) {
    for (int i = 0; i < array.length; i++) {
      System.out.println("[" + i + "] \"" + array[i] + "\"");
    }
    System.out.flush();
  }
  */


  /**
   * For arrays, use printArray() instead. This function causes a warning
   * because the new print(Object...) and println(Object...) functions can't
   * be reliably bound by the compiler.
   */
  static public void println(Object what) {
    if (what == null) {
      System.out.println("null");
    } else if (what.getClass().isArray()) {
      printArray(what);
    } else {
      System.out.println(what.toString());
      System.out.flush();
    }
  }

  /**
   * ( begin auto-generated from printArray.xml )
   *
   * To come...
   *
   * ( end auto-generated )
 * @webref output:text_area
 * @param what one-dimensional array
 * @usage IDE
 * @see PApplet#print(byte)
 * @see PApplet#println()
 */
  static public void printArray(Object what) {
    if (what == null) {
      // special case since this does fuggly things on > 1.1
      System.out.println("null");

    } else {
      String name = what.getClass().getName();
      if (name.charAt(0) == '[') {
        switch (name.charAt(1)) {
        case '[':
          // don't even mess with multi-dimensional arrays (case '[')
          // or anything else that's not int, float, boolean, char
          System.out.println(what);
          break;

        case 'L':
          // print a 1D array of objects as individual elements
          Object poo[] = (Object[]) what;
          for (int i = 0; i < poo.length; i++) {
            if (poo[i] instanceof String) {
              System.out.println("[" + i + "] \"" + poo[i] + "\"");
            } else {
              System.out.println("[" + i + "] " + poo[i]);
            }
          }
          break;

        case 'Z':  // boolean
          boolean zz[] = (boolean[]) what;
          for (int i = 0; i < zz.length; i++) {
            System.out.println("[" + i + "] " + zz[i]);
          }
          break;

        case 'B':  // byte
          byte bb[] = (byte[]) what;
          for (int i = 0; i < bb.length; i++) {
            System.out.println("[" + i + "] " + bb[i]);
          }
          break;

        case 'C':  // char
          char cc[] = (char[]) what;
          for (int i = 0; i < cc.length; i++) {
            System.out.println("[" + i + "] '" + cc[i] + "'");
          }
          break;

        case 'I':  // int
          int ii[] = (int[]) what;
          for (int i = 0; i < ii.length; i++) {
            System.out.println("[" + i + "] " + ii[i]);
          }
          break;

        case 'J':  // int
          long jj[] = (long[]) what;
          for (int i = 0; i < jj.length; i++) {
            System.out.println("[" + i + "] " + jj[i]);
          }
          break;

        case 'F':  // float
          float ff[] = (float[]) what;
          for (int i = 0; i < ff.length; i++) {
            System.out.println("[" + i + "] " + ff[i]);
          }
          break;

        case 'D':  // double
          double dd[] = (double[]) what;
          for (int i = 0; i < dd.length; i++) {
            System.out.println("[" + i + "] " + dd[i]);
          }
          break;

        default:
          System.out.println(what);
        }
      } else {  // not an array
        System.out.println(what);
      }
    }
    System.out.flush();
  }


  static public void debug(String msg) {
    if (DEBUG) println(msg);
  }
  //

  /*
  // not very useful, because it only works for public (and protected?)
  // fields of a class, not local variables to methods
  public void printvar(String name) {
    try {
      Field field = getClass().getDeclaredField(name);
      println(name + " = " + field.get(this));
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
  */


  //////////////////////////////////////////////////////////////

  // MATH

  // lots of convenience methods for math with floats.
  // doubles are overkill for processing applets, and casting
  // things all the time is annoying, thus the functions below.

/**
   * ( begin auto-generated from abs.xml )
   *
   * Calculates the absolute value (magnitude) of a number. The absolute
   * value of a number is always positive.
   *
   * ( end auto-generated )
   * @webref math:calculation
   * @param n number to compute
   */
  static public final float abs(float n) {
    return (n < 0) ? -n : n;
  }

  static public final int abs(int n) {
    return (n < 0) ? -n : n;
  }

/**
   * ( begin auto-generated from sq.xml )
   *
   * Squares a number (multiplies a number by itself). The result is always a
   * positive number, as multiplying two negative numbers always yields a
   * positive result. For example, -1 * -1 = 1.
   *
   * ( end auto-generated )
   * @webref math:calculation
   * @param n number to square
   * @see PApplet#sqrt(float)
   */
  static public final float sq(float n) {
    return n*n;
  }

/**
   * ( begin auto-generated from sqrt.xml )
   *
   * Calculates the square root of a number. The square root of a number is
   * always positive, even though there may be a valid negative root. The
   * square root <b>s</b> of number <b>a</b> is such that <b>s*s = a</b>. It
   * is the opposite of squaring.
   *
   * ( end auto-generated )
   * @webref math:calculation
   * @param n non-negative number
   * @see PApplet#pow(float, float)
   * @see PApplet#sq(float)
   */
  static public final float sqrt(float n) {
    return (float)Math.sqrt(n);
  }

/**
   * ( begin auto-generated from log.xml )
   *
   * Calculates the natural logarithm (the base-<i>e</i> logarithm) of a
   * number. This function expects the values greater than 0.0.
   *
   * ( end auto-generated )
   * @webref math:calculation
   * @param n number greater than 0.0
   */
  static public final float log(float n) {
    return (float)Math.log(n);
  }

/**
   * ( begin auto-generated from exp.xml )
   *
   * Returns Euler's number <i>e</i> (2.71828...) raised to the power of the
   * <b>value</b> parameter.
   *
   * ( end auto-generated )
   * @webref math:calculation
   * @param n exponent to raise
   */
  static public final float exp(float n) {
    return (float)Math.exp(n);
  }

/**
   * ( begin auto-generated from pow.xml )
   *
   * Facilitates exponential expressions. The <b>pow()</b> function is an
   * efficient way of multiplying numbers by themselves (or their reciprocal)
   * in large quantities. For example, <b>pow(3, 5)</b> is equivalent to the
   * expression 3*3*3*3*3 and <b>pow(3, -5)</b> is equivalent to 1 / 3*3*3*3*3.
   *
   * ( end auto-generated )
   * @webref math:calculation
   * @param n base of the exponential expression
   * @param e power by which to raise the base
   * @see PApplet#sqrt(float)
   */
  static public final float pow(float n, float e) {
    return (float)Math.pow(n, e);
  }

/**
   * ( begin auto-generated from max.xml )
   *
   * Determines the largest value in a sequence of numbers.
   *
   * ( end auto-generated )
   * @webref math:calculation
   * @param a first number to compare
   * @param b second number to compare
   * @see PApplet#min(float, float, float)
   */
  static public final int max(int a, int b) {
    return (a > b) ? a : b;
  }

  static public final float max(float a, float b) {
    return (a > b) ? a : b;
  }

  /*
  static public final double max(double a, double b) {
    return (a > b) ? a : b;
  }
  */

/**
 * @param c third number to compare
 */
  static public final int max(int a, int b, int c) {
    return (a > b) ? ((a > c) ? a : c) : ((b > c) ? b : c);
  }


  static public final float max(float a, float b, float c) {
    return (a > b) ? ((a > c) ? a : c) : ((b > c) ? b : c);
  }


  /**
   * @param list array of numbers to compare
   */
  static public final int max(int[] list) {
    if (list.length == 0) {
      throw new ArrayIndexOutOfBoundsException(ERROR_MIN_MAX);
    }
    int max = list[0];
    for (int i = 1; i < list.length; i++) {
      if (list[i] > max) max = list[i];
    }
    return max;
  }

  static public final float max(float[] list) {
    if (list.length == 0) {
      throw new ArrayIndexOutOfBoundsException(ERROR_MIN_MAX);
    }
    float max = list[0];
    for (int i = 1; i < list.length; i++) {
      if (list[i] > max) max = list[i];
    }
    return max;
  }


//  /**
//   * Find the maximum value in an array.
//   * Throws an ArrayIndexOutOfBoundsException if the array is length 0.
//   * @param list the source array
//   * @return The maximum value
//   */
  /*
  static public final double max(double[] list) {
    if (list.length == 0) {
      throw new ArrayIndexOutOfBoundsException(ERROR_MIN_MAX);
    }
    double max = list[0];
    for (int i = 1; i < list.length; i++) {
      if (list[i] > max) max = list[i];
    }
    return max;
  }
  */


  static public final int min(int a, int b) {
    return (a < b) ? a : b;
  }

  static public final float min(float a, float b) {
    return (a < b) ? a : b;
  }

  /*
  static public final double min(double a, double b) {
    return (a < b) ? a : b;
  }
  */


  static public final int min(int a, int b, int c) {
    return (a < b) ? ((a < c) ? a : c) : ((b < c) ? b : c);
  }

/**
   * ( begin auto-generated from min.xml )
   *
   * Determines the smallest value in a sequence of numbers.
   *
   * ( end auto-generated )
   * @webref math:calculation
   * @param a first number
   * @param b second number
   * @param c third number
   * @see PApplet#max(float, float, float)
   */
  static public final float min(float a, float b, float c) {
    return (a < b) ? ((a < c) ? a : c) : ((b < c) ? b : c);
  }

  /*
  static public final double min(double a, double b, double c) {
    return (a < b) ? ((a < c) ? a : c) : ((b < c) ? b : c);
  }
  */


  /**
   * @param list array of numbers to compare
   */
  static public final int min(int[] list) {
    if (list.length == 0) {
      throw new ArrayIndexOutOfBoundsException(ERROR_MIN_MAX);
    }
    int min = list[0];
    for (int i = 1; i < list.length; i++) {
      if (list[i] < min) min = list[i];
    }
    return min;
  }

  static public final float min(float[] list) {
    if (list.length == 0) {
      throw new ArrayIndexOutOfBoundsException(ERROR_MIN_MAX);
    }
    float min = list[0];
    for (int i = 1; i < list.length; i++) {
      if (list[i] < min) min = list[i];
    }
    return min;
  }


  /*
   * Find the minimum value in an array.
   * Throws an ArrayIndexOutOfBoundsException if the array is length 0.
   * @param list the source array
   * @return The minimum value
   */
  /*
  static public final double min(double[] list) {
    if (list.length == 0) {
      throw new ArrayIndexOutOfBoundsException(ERROR_MIN_MAX);
    }
    double min = list[0];
    for (int i = 1; i < list.length; i++) {
      if (list[i] < min) min = list[i];
    }
    return min;
  }
  */


  static public final int constrain(int amt, int low, int high) {
    return (amt < low) ? low : ((amt > high) ? high : amt);
  }

/**
   * ( begin auto-generated from constrain.xml )
   *
   * Constrains a value to not exceed a maximum and minimum value.
   *
   * ( end auto-generated )
   * @webref math:calculation
   * @param amt the value to constrain
   * @param low minimum limit
   * @param high maximum limit
   * @see PApplet#max(float, float, float)
   * @see PApplet#min(float, float, float)
   */

  static public final float constrain(float amt, float low, float high) {
    return (amt < low) ? low : ((amt > high) ? high : amt);
  }

/**
   * ( begin auto-generated from sin.xml )
   *
   * Calculates the sine of an angle. This function expects the values of the
   * <b>angle</b> parameter to be provided in radians (values from 0 to
   * 6.28). Values are returned in the range -1 to 1.
   *
   * ( end auto-generated )
   * @webref math:trigonometry
   * @param angle an angle in radians
   * @see PApplet#cos(float)
   * @see PApplet#tan(float)
   * @see PApplet#radians(float)
   */
  static public final float sin(float angle) {
    return (float)Math.sin(angle);
  }

/**
   * ( begin auto-generated from cos.xml )
   *
   * Calculates the cosine of an angle. This function expects the values of
   * the <b>angle</b> parameter to be provided in radians (values from 0 to
   * PI*2). Values are returned in the range -1 to 1.
   *
   * ( end auto-generated )
   * @webref math:trigonometry
   * @param angle an angle in radians
   * @see PApplet#sin(float)
   * @see PApplet#tan(float)
   * @see PApplet#radians(float)
   */
  static public final float cos(float angle) {
    return (float)Math.cos(angle);
  }

/**
   * ( begin auto-generated from tan.xml )
   *
   * Calculates the ratio of the sine and cosine of an angle. This function
   * expects the values of the <b>angle</b> parameter to be provided in
   * radians (values from 0 to PI*2). Values are returned in the range
   * <b>infinity</b> to <b>-infinity</b>.
   *
   * ( end auto-generated )
   * @webref math:trigonometry
   * @param angle an angle in radians
   * @see PApplet#cos(float)
   * @see PApplet#sin(float)
   * @see PApplet#radians(float)
   */
  static public final float tan(float angle) {
    return (float)Math.tan(angle);
  }

/**
   * ( begin auto-generated from asin.xml )
   *
   * The inverse of <b>sin()</b>, returns the arc sine of a value. This
   * function expects the values in the range of -1 to 1 and values are
   * returned in the range <b>-PI/2</b> to <b>PI/2</b>.
   *
   * ( end auto-generated )
   * @webref math:trigonometry
   * @param value the value whose arc sine is to be returned
   * @see PApplet#sin(float)
   * @see PApplet#acos(float)
   * @see PApplet#atan(float)
   */
  static public final float asin(float value) {
    return (float)Math.asin(value);
  }

/**
   * ( begin auto-generated from acos.xml )
   *
   * The inverse of <b>cos()</b>, returns the arc cosine of a value. This
   * function expects the values in the range of -1 to 1 and values are
   * returned in the range <b>0</b> to <b>PI (3.1415927)</b>.
   *
   * ( end auto-generated )
   * @webref math:trigonometry
   * @param value the value whose arc cosine is to be returned
   * @see PApplet#cos(float)
   * @see PApplet#asin(float)
   * @see PApplet#atan(float)
   */
  static public final float acos(float value) {
    return (float)Math.acos(value);
  }

/**
   * ( begin auto-generated from atan.xml )
   *
   * The inverse of <b>tan()</b>, returns the arc tangent of a value. This
   * function expects the values in the range of -Infinity to Infinity
   * (exclusive) and values are returned in the range <b>-PI/2</b> to <b>PI/2 </b>.
   *
   * ( end auto-generated )
   * @webref math:trigonometry
   * @param value -Infinity to Infinity (exclusive)
   * @see PApplet#tan(float)
   * @see PApplet#asin(float)
   * @see PApplet#acos(float)
   */
  static public final float atan(float value) {
    return (float)Math.atan(value);
  }

/**
   * ( begin auto-generated from atan2.xml )
   *
   * Calculates the angle (in radians) from a specified point to the
   * coordinate origin as measured from the positive x-axis. Values are
   * returned as a <b>float</b> in the range from <b>PI</b> to <b>-PI</b>.
   * The <b>atan2()</b> function is most often used for orienting geometry to
   * the position of the cursor.  Note: The y-coordinate of the point is the
   * first parameter and the x-coordinate is the second due the the structure
   * of calculating the tangent.
   *
   * ( end auto-generated )
   * @webref math:trigonometry
   * @param y y-coordinate of the point
   * @param x x-coordinate of the point
   * @see PApplet#tan(float)
   */
  static public final float atan2(float y, float x) {
    return (float)Math.atan2(y, x);
  }

/**
   * ( begin auto-generated from degrees.xml )
   *
   * Converts a radian measurement to its corresponding value in degrees.
   * Radians and degrees are two ways of measuring the same thing. There are
   * 360 degrees in a circle and 2*PI radians in a circle. For example,
   * 90&deg; = PI/2 = 1.5707964. All trigonometric functions in Processing
   * require their parameters to be specified in radians.
   *
   * ( end auto-generated )
   * @webref math:trigonometry
   * @param radians radian value to convert to degrees
   * @see PApplet#radians(float)
   */
  static public final float degrees(float radians) {
    return radians * RAD_TO_DEG;
  }

/**
   * ( begin auto-generated from radians.xml )
   *
   * Converts a degree measurement to its corresponding value in radians.
   * Radians and degrees are two ways of measuring the same thing. There are
   * 360 degrees in a circle and 2*PI radians in a circle. For example,
   * 90&deg; = PI/2 = 1.5707964. All trigonometric functions in Processing
   * require their parameters to be specified in radians.
   *
   * ( end auto-generated )
   * @webref math:trigonometry
   * @param degrees degree value to convert to radians
   * @see PApplet#degrees(float)
   */
  static public final float radians(float degrees) {
    return degrees * DEG_TO_RAD;
  }

/**
   * ( begin auto-generated from ceil.xml )
   *
   * Calculates the closest int value that is greater than or equal to the
   * value of the parameter. For example, <b>ceil(9.03)</b> returns the value 10.
   *
   * ( end auto-generated )
   * @webref math:calculation
   * @param n number to round up
   * @see PApplet#floor(float)
   * @see PApplet#round(float)
   */
  static public final int ceil(float n) {
    return (int) Math.ceil(n);
  }

/**
   * ( begin auto-generated from floor.xml )
   *
   * Calculates the closest int value that is less than or equal to the value
   * of the parameter.
   *
   * ( end auto-generated )
   * @webref math:calculation
   * @param n number to round down
   * @see PApplet#ceil(float)
   * @see PApplet#round(float)
   */
  static public final int floor(float n) {
    return (int) Math.floor(n);
  }

/**
   * ( begin auto-generated from round.xml )
   *
   * Calculates the integer closest to the <b>value</b> parameter. For
   * example, <b>round(9.2)</b> returns the value 9.
   *
   * ( end auto-generated )
   * @webref math:calculation
   * @param n number to round
   * @see PApplet#floor(float)
   * @see PApplet#ceil(float)
   */
  static public final int round(float n) {
    return Math.round(n);
  }


  static public final float mag(float a, float b) {
    return (float)Math.sqrt(a*a + b*b);
  }

/**
   * ( begin auto-generated from mag.xml )
   *
   * Calculates the magnitude (or length) of a vector. A vector is a
   * direction in space commonly used in computer graphics and linear
   * algebra. Because it has no "start" position, the magnitude of a vector
   * can be thought of as the distance from coordinate (0,0) to its (x,y)
   * value. Therefore, mag() is a shortcut for writing "dist(0, 0, x, y)".
   *
   * ( end auto-generated )
   * @webref math:calculation
   * @param a first value
   * @param b second value
   * @param c third value
   * @see PApplet#dist(float, float, float, float)
   */
  static public final float mag(float a, float b, float c) {
    return (float)Math.sqrt(a*a + b*b + c*c);
  }


  static public final float dist(float x1, float y1, float x2, float y2) {
    return sqrt(sq(x2-x1) + sq(y2-y1));
  }

/**
   * ( begin auto-generated from dist.xml )
   *
   * Calculates the distance between two points.
   *
   * ( end auto-generated )
   * @webref math:calculation
   * @param x1 x-coordinate of the first point
   * @param y1 y-coordinate of the first point
   * @param z1 z-coordinate of the first point
   * @param x2 x-coordinate of the second point
   * @param y2 y-coordinate of the second point
   * @param z2 z-coordinate of the second point
   */
  static public final float dist(float x1, float y1, float z1,
                                 float x2, float y2, float z2) {
    return sqrt(sq(x2-x1) + sq(y2-y1) + sq(z2-z1));
  }

/**
   * ( begin auto-generated from lerp.xml )
   *
   * Calculates a number between two numbers at a specific increment. The
   * <b>amt</b> parameter is the amount to interpolate between the two values
   * where 0.0 equal to the first point, 0.1 is very near the first point,
   * 0.5 is half-way in between, etc. The lerp function is convenient for
   * creating motion along a straight path and for drawing dotted lines.
   *
   * ( end auto-generated )
   * @webref math:calculation
   * @param start first value
   * @param stop second value
   * @param amt float between 0.0 and 1.0
   * @see PGraphics#curvePoint(float, float, float, float, float)
   * @see PGraphics#bezierPoint(float, float, float, float, float)
   * @see PVector#lerp(PVector, float)
   * @see PGraphics#lerpColor(int, int, float)
   */
  static public final float lerp(float start, float stop, float amt) {
    return start + (stop-start) * amt;
  }

  /**
   * ( begin auto-generated from norm.xml )
   *
   * Normalizes a number from another range into a value between 0 and 1.
   * <br/> <br/>
   * Identical to map(value, low, high, 0, 1);
   * <br/> <br/>
   * Numbers outside the range are not clamped to 0 and 1, because
   * out-of-range values are often intentional and useful.
   *
   * ( end auto-generated )
   * @webref math:calculation
   * @param value the incoming value to be converted
   * @param start lower bound of the value's current range
   * @param stop upper bound of the value's current range
   * @see PApplet#map(float, float, float, float, float)
   * @see PApplet#lerp(float, float, float)
   */
  static public final float norm(float value, float start, float stop) {
    return (value - start) / (stop - start);
  }

  /**
   * ( begin auto-generated from map.xml )
   *
   * Re-maps a number from one range to another. In the example above,
   * the number '25' is converted from a value in the range 0..100 into
   * a value that ranges from the left edge (0) to the right edge (width)
   * of the screen.
   * <br/> <br/>
   * Numbers outside the range are not clamped to 0 and 1, because
   * out-of-range values are often intentional and useful.
   *
   * ( end auto-generated )
   * @webref math:calculation
   * @param value the incoming value to be converted
   * @param start1 lower bound of the value's current range
   * @param stop1 upper bound of the value's current range
   * @param start2 lower bound of the value's target range
   * @param stop2 upper bound of the value's target range
   * @see PApplet#norm(float, float, float)
   * @see PApplet#lerp(float, float, float)
   */
  static public final float map(float value,
                                float start1, float stop1,
                                float start2, float stop2) {
    float outgoing =
      start2 + (stop2 - start2) * ((value - start1) / (stop1 - start1));
    String badness = null;
    if (outgoing != outgoing) {
      badness = "NaN (not a number)";

    } else if (outgoing == Float.NEGATIVE_INFINITY ||
               outgoing == Float.POSITIVE_INFINITY) {
      badness = "infinity";
    }
    if (badness != null) {
      final String msg =
        String.format("map(%s, %s, %s, %s, %s) called, which returns %s",
                      nf(value), nf(start1), nf(stop1),
                      nf(start2), nf(stop2), badness);
      PGraphics.showWarning(msg);
    }
    return outgoing;
  }


  /*
  static public final double map(double value,
                                 double istart, double istop,
                                 double ostart, double ostop) {
    return ostart + (ostop - ostart) * ((value - istart) / (istop - istart));
  }
  */



  //////////////////////////////////////////////////////////////

  // RANDOM NUMBERS


  Random internalRandom;

  /**
   *
   */
  public final float random(float high) {
    // avoid an infinite loop when 0 or NaN are passed in
    if (high == 0 || high != high) {
      return 0;
    }

    if (internalRandom == null) {
      internalRandom = new Random();
    }

    // for some reason (rounding error?) Math.random() * 3
    // can sometimes return '3' (once in ~30 million tries)
    // so a check was added to avoid the inclusion of 'howbig'
    float value = 0;
    do {
      value = internalRandom.nextFloat() * high;
    } while (value == high);
    return value;
  }

  /**
   * ( begin auto-generated from randomGaussian.xml )
   *
   * Returns a float from a random series of numbers having a mean of 0
   * and standard deviation of 1. Each time the <b>randomGaussian()</b>
   * function is called, it returns a number fitting a Gaussian, or
   * normal, distribution. There is theoretically no minimum or maximum
   * value that <b>randomGaussian()</b> might return. Rather, there is
   * just a very low probability that values far from the mean will be
   * returned; and a higher probability that numbers near the mean will
   * be returned.
   *
   * ( end auto-generated )
   * @webref math:random
   * @see PApplet#random(float,float)
   * @see PApplet#noise(float, float, float)
   */
  public final float randomGaussian() {
    if (internalRandom == null) {
      internalRandom = new Random();
    }
    return (float) internalRandom.nextGaussian();
  }


  /**
   * ( begin auto-generated from random.xml )
   *
   * Generates random numbers. Each time the <b>random()</b> function is
   * called, it returns an unexpected value within the specified range. If
   * one parameter is passed to the function it will return a <b>float</b>
   * between zero and the value of the <b>high</b> parameter. The function
   * call <b>random(5)</b> returns values between 0 and 5 (starting at zero,
   * up to but not including 5). If two parameters are passed, it will return
   * a <b>float</b> with a value between the the parameters. The function
   * call <b>random(-5, 10.2)</b> returns values starting at -5 up to (but
   * not including) 10.2. To convert a floating-point random number to an
   * integer, use the <b>int()</b> function.
   *
   * ( end auto-generated )
   * @webref math:random
   * @param low lower limit
   * @param high upper limit
   * @see PApplet#randomSeed(long)
   * @see PApplet#noise(float, float, float)
   */
  public final float random(float low, float high) {
    if (low >= high) return low;
    float diff = high - low;
    float value = 0;
    // because of rounding error, can't just add low, otherwise it may hit high
    // https://github.com/processing/processing/issues/4551
    do {
      value = random(diff) + low;
    } while (value == high);
    return value;
  }


 /**
   * ( begin auto-generated from randomSeed.xml )
   *
   * Sets the seed value for <b>random()</b>. By default, <b>random()</b>
   * produces different results each time the program is run. Set the
   * <b>value</b> parameter to a constant to return the same pseudo-random
   * numbers each time the software is run.
   *
   * ( end auto-generated )
   * @webref math:random
   * @param seed seed value
   * @see PApplet#random(float,float)
   * @see PApplet#noise(float, float, float)
   * @see PApplet#noiseSeed(long)
   */
  public final void randomSeed(long seed) {
    if (internalRandom == null) {
      internalRandom = new Random();
    }
    internalRandom.setSeed(seed);
  }



  //////////////////////////////////////////////////////////////

  // PERLIN NOISE

  // [toxi 040903]
  // octaves and amplitude amount per octave are now user controlled
  // via the noiseDetail() function.

  // [toxi 030902]
  // cleaned up code and now using bagel's cosine table to speed up

  // [toxi 030901]
  // implementation by the german demo group farbrausch
  // as used in their demo "art": http://www.farb-rausch.de/fr010src.zip

  static final int PERLIN_YWRAPB = 4;
  static final int PERLIN_YWRAP = 1<<PERLIN_YWRAPB;
  static final int PERLIN_ZWRAPB = 8;
  static final int PERLIN_ZWRAP = 1<<PERLIN_ZWRAPB;
  static final int PERLIN_SIZE = 4095;

  int perlin_octaves = 4; // default to medium smooth
  float perlin_amp_falloff = 0.5f; // 50% reduction/octave

  // [toxi 031112]
  // new vars needed due to recent change of cos table in PGraphics
  int perlin_TWOPI, perlin_PI;
  float[] perlin_cosTable;
  float[] perlin;

  Random perlinRandom;


  /**
   */
  public float noise(float x) {
    // is this legit? it's a dumb way to do it (but repair it later)
    return noise(x, 0f, 0f);
  }

  /**
   */
  public float noise(float x, float y) {
    return noise(x, y, 0f);
  }

  /**
   * ( begin auto-generated from noise.xml )
   *
   * Returns the Perlin noise value at specified coordinates. Perlin noise is
   * a random sequence generator producing a more natural ordered, harmonic
   * succession of numbers compared to the standard <b>random()</b> function.
   * It was invented by Ken Perlin in the 1980s and been used since in
   * graphical applications to produce procedural textures, natural motion,
   * shapes, terrains etc.<br /><br /> The main difference to the
   * <b>random()</b> function is that Perlin noise is defined in an infinite
   * n-dimensional space where each pair of coordinates corresponds to a
   * fixed semi-random value (fixed only for the lifespan of the program).
   * The resulting value will always be between 0.0 and 1.0. Processing can
   * compute 1D, 2D and 3D noise, depending on the number of coordinates
   * given. The noise value can be animated by moving through the noise space
   * as demonstrated in the example above. The 2nd and 3rd dimension can also
   * be interpreted as time.<br /><br />The actual noise is structured
   * similar to an audio signal, in respect to the function's use of
   * frequencies. Similar to the concept of harmonics in physics, perlin
   * noise is computed over several octaves which are added together for the
   * final result. <br /><br />Another way to adjust the character of the
   * resulting sequence is the scale of the input coordinates. As the
   * function works within an infinite space the value of the coordinates
   * doesn't matter as such, only the distance between successive coordinates
   * does (eg. when using <b>noise()</b> within a loop). As a general rule
   * the smaller the difference between coordinates, the smoother the
   * resulting noise sequence will be. Steps of 0.005-0.03 work best for most
   * applications, but this will differ depending on use.
   *
   * ( end auto-generated )
   *
   * @webref math:random
   * @param x x-coordinate in noise space
   * @param y y-coordinate in noise space
   * @param z z-coordinate in noise space
   * @see PApplet#noiseSeed(long)
   * @see PApplet#noiseDetail(int, float)
   * @see PApplet#random(float,float)
   */
  public float noise(float x, float y, float z) {
    if (perlin == null) {
      if (perlinRandom == null) {
        perlinRandom = new Random();
      }
      perlin = new float[PERLIN_SIZE + 1];
      for (int i = 0; i < PERLIN_SIZE + 1; i++) {
        perlin[i] = perlinRandom.nextFloat(); //(float)Math.random();
      }
      // [toxi 031112]
      // noise broke due to recent change of cos table in PGraphics
      // this will take care of it
      perlin_cosTable = PGraphics.cosLUT;
      perlin_TWOPI = perlin_PI = PGraphics.SINCOS_LENGTH;
      perlin_PI >>= 1;
    }

    if (x<0) x=-x;
    if (y<0) y=-y;
    if (z<0) z=-z;

    int xi=(int)x, yi=(int)y, zi=(int)z;
    float xf = x - xi;
    float yf = y - yi;
    float zf = z - zi;
    float rxf, ryf;

    float r=0;
    float ampl=0.5f;

    float n1,n2,n3;

    for (int i=0; i<perlin_octaves; i++) {
      int of=xi+(yi<<PERLIN_YWRAPB)+(zi<<PERLIN_ZWRAPB);

      rxf=noise_fsc(xf);
      ryf=noise_fsc(yf);

      n1  = perlin[of&PERLIN_SIZE];
      n1 += rxf*(perlin[(of+1)&PERLIN_SIZE]-n1);
      n2  = perlin[(of+PERLIN_YWRAP)&PERLIN_SIZE];
      n2 += rxf*(perlin[(of+PERLIN_YWRAP+1)&PERLIN_SIZE]-n2);
      n1 += ryf*(n2-n1);

      of += PERLIN_ZWRAP;
      n2  = perlin[of&PERLIN_SIZE];
      n2 += rxf*(perlin[(of+1)&PERLIN_SIZE]-n2);
      n3  = perlin[(of+PERLIN_YWRAP)&PERLIN_SIZE];
      n3 += rxf*(perlin[(of+PERLIN_YWRAP+1)&PERLIN_SIZE]-n3);
      n2 += ryf*(n3-n2);

      n1 += noise_fsc(zf)*(n2-n1);

      r += n1*ampl;
      ampl *= perlin_amp_falloff;
      xi<<=1; xf*=2;
      yi<<=1; yf*=2;
      zi<<=1; zf*=2;

      if (xf>=1.0f) { xi++; xf--; }
      if (yf>=1.0f) { yi++; yf--; }
      if (zf>=1.0f) { zi++; zf--; }
    }
    return r;
  }

  // [toxi 031112]
  // now adjusts to the size of the cosLUT used via
  // the new variables, defined above
  private float noise_fsc(float i) {
    // using bagel's cosine table instead
    return 0.5f*(1.0f-perlin_cosTable[(int)(i*perlin_PI)%perlin_TWOPI]);
  }

  // [toxi 040903]
  // make perlin noise quality user controlled to allow
  // for different levels of detail. lower values will produce
  // smoother results as higher octaves are surpressed

  /**
   * ( begin auto-generated from noiseDetail.xml )
   *
   * Adjusts the character and level of detail produced by the Perlin noise
   * function. Similar to harmonics in physics, noise is computed over
   * several octaves. Lower octaves contribute more to the output signal and
   * as such define the overal intensity of the noise, whereas higher octaves
   * create finer grained details in the noise sequence. By default, noise is
   * computed over 4 octaves with each octave contributing exactly half than
   * its predecessor, starting at 50% strength for the 1st octave. This
   * falloff amount can be changed by adding an additional function
   * parameter. Eg. a falloff factor of 0.75 means each octave will now have
   * 75% impact (25% less) of the previous lower octave. Any value between
   * 0.0 and 1.0 is valid, however note that values greater than 0.5 might
   * result in greater than 1.0 values returned by <b>noise()</b>.<br /><br
   * />By changing these parameters, the signal created by the <b>noise()</b>
   * function can be adapted to fit very specific needs and characteristics.
   *
   * ( end auto-generated )
   * @webref math:random
   * @param lod number of octaves to be used by the noise
   * @see PApplet#noise(float, float, float)
   */
  public void noiseDetail(int lod) {
    if (lod>0) perlin_octaves=lod;
  }

  /**
   * @see #noiseDetail(int)
   * @param falloff falloff factor for each octave
   */
  public void noiseDetail(int lod, float falloff) {
    if (lod>0) perlin_octaves=lod;
    if (falloff>0) perlin_amp_falloff=falloff;
  }

  /**
   * ( begin auto-generated from noiseSeed.xml )
   *
   * Sets the seed value for <b>noise()</b>. By default, <b>noise()</b>
   * produces different results each time the program is run. Set the
   * <b>value</b> parameter to a constant to return the same pseudo-random
   * numbers each time the software is run.
   *
   * ( end auto-generated )
   * @webref math:random
   * @param seed seed value
   * @see PApplet#noise(float, float, float)
   * @see PApplet#noiseDetail(int, float)
   * @see PApplet#random(float,float)
   * @see PApplet#randomSeed(long)
   */
  public void noiseSeed(long seed) {
    if (perlinRandom == null) perlinRandom = new Random();
    perlinRandom.setSeed(seed);
    // force table reset after changing the random number seed [0122]
    perlin = null;
  }



  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


  protected String[] loadImageFormats;

  /**
   * ( begin auto-generated from loadImage.xml )
   *
   * Loads an image into a variable of type <b>PImage</b>. Four types of
   * images ( <b>.gif</b>, <b>.jpg</b>, <b>.tga</b>, <b>.png</b>) images may
   * be loaded. To load correctly, images must be located in the data
   * directory of the current sketch. In most cases, load all images in
   * <b>setup()</b> to preload them at the start of the program. Loading
   * images inside <b>draw()</b> will reduce the speed of a program.<br/>
   * <br/> <b>filename</b> parameter can also be a URL to a file found
   * online. For security reasons, a Processing sketch found online can only
   * download files from the same server from which it came. Getting around
   * this restriction requires a <a
   * href="http://wiki.processing.org/w/Sign_an_Applet">signed
   * applet</a>.<br/>
   * <br/> <b>extension</b> parameter is used to determine the image type in
   * cases where the image filename does not end with a proper extension.
   * Specify the extension as the second parameter to <b>loadImage()</b>, as
   * shown in the third example on this page.<br/>
   * <br/> an image is not loaded successfully, the <b>null</b> value is
   * returned and an error message will be printed to the console. The error
   * message does not halt the program, however the null value may cause a
   * NullPointerException if your code does not check whether the value
   * returned from <b>loadImage()</b> is null.<br/>
   * <br/> on the type of error, a <b>PImage</b> object may still be
   * returned, but the width and height of the image will be set to -1. This
   * happens if bad image data is returned or cannot be decoded properly.
   * Sometimes this happens with image URLs that produce a 403 error or that
   * redirect to a password prompt, because <b>loadImage()</b> will attempt
   * to interpret the HTML as image data.
   *
   * ( end auto-generated )
   *
   * @webref image:loading_displaying
   * @param filename name of file to load, can be .gif, .jpg, .tga, or a handful of other image types depending on your platform
   * @see PImage
   * @see PGraphics#image(PImage, float, float, float, float)
   * @see PGraphics#imageMode(int)
   * @see PGraphics#background(float, float, float, float)
   */
  public PImage loadImage(String filename) {
//    return loadImage(filename, null, null);
    return loadImage(filename, null);
  }

//  /**
//   * @param extension the type of image to load, for example "png", "gif", "jpg"
//   */
//  public PImage loadImage(String filename, String extension) {
//    return loadImage(filename, extension, null);
//  }

//  /**
//   * @nowebref
//   */
//  public PImage loadImage(String filename, Object params) {
//    return loadImage(filename, null, params);
//  }

  /**
   * @param extension type of image to load, for example "png", "gif", "jpg"
   */
  public PImage loadImage(String filename, String extension) { //, Object params) {

    // awaitAsyncSaveCompletion() has to run on the main thread, because P2D
    // and P3D call GL functions. If this runs on background, requestImage()
    // already called awaitAsyncSaveCompletion() on the main thread.
    if (g != null && !Thread.currentThread().getName().startsWith(REQUEST_IMAGE_THREAD_PREFIX)) {
      g.awaitAsyncSaveCompletion(filename);
    }

    if (extension == null) {
      String lower = filename.toLowerCase();
      int dot = filename.lastIndexOf('.');
      if (dot == -1) {
        extension = "unknown";  // no extension found

      } else {
        extension = lower.substring(dot + 1);

        // check for, and strip any parameters on the url, i.e.
        // filename.jpg?blah=blah&something=that
        int question = extension.indexOf('?');
        if (question != -1) {
          extension = extension.substring(0, question);
        }
      }
    }

    // just in case. them users will try anything!
    extension = extension.toLowerCase();

    if (extension.equals("tga")) {
      try {
        PImage image = loadImageTGA(filename);
//        if (params != null) {
//          image.setParams(g, params);
//        }
        return image;
      } catch (IOException e) {
        printStackTrace(e);
        return null;
      }
    }

    if (extension.equals("tif") || extension.equals("tiff")) {
      byte bytes[] = loadBytes(filename);
      PImage image =  (bytes == null) ? null : PImage.loadTIFF(bytes);
//      if (params != null) {
//        image.setParams(g, params);
//      }
      return image;
    }

    // For jpeg, gif, and png, load them using createImage(),
    // because the javax.imageio code was found to be much slower.
    // http://dev.processing.org/bugs/show_bug.cgi?id=392
    try {
      if (extension.equals("jpg") || extension.equals("jpeg") ||
          extension.equals("gif") || extension.equals("png") ||
          extension.equals("unknown")) {
        byte bytes[] = loadBytes(filename);
        if (bytes == null) {
          return null;
        } else {
          //Image awtImage = Toolkit.getDefaultToolkit().createImage(bytes);
          Image awtImage = new ImageIcon(bytes).getImage();

          if (awtImage instanceof BufferedImage) {
            BufferedImage buffImage = (BufferedImage) awtImage;
            int space = buffImage.getColorModel().getColorSpace().getType();
            if (space == ColorSpace.TYPE_CMYK) {
              System.err.println(filename + " is a CMYK image, " +
                                 "only RGB images are supported.");
              return null;
              /*
              // wishful thinking, appears to not be supported
              // https://community.oracle.com/thread/1272045?start=0&tstart=0
              BufferedImage destImage =
                new BufferedImage(buffImage.getWidth(),
                                  buffImage.getHeight(),
                                  BufferedImage.TYPE_3BYTE_BGR);
              ColorConvertOp op = new ColorConvertOp(null);
              op.filter(buffImage, destImage);
              image = new PImage(destImage);
              */
            }
          }

          PImage image = new PImage(awtImage);
          if (image.width == -1) {
            System.err.println("The file " + filename +
                               " contains bad image data, or may not be an image.");
          }

          // if it's a .gif image, test to see if it has transparency
          if (extension.equals("gif") || extension.equals("png") ||
              extension.equals("unknown")) {
            image.checkAlpha();
          }

//          if (params != null) {
//            image.setParams(g, params);
//          }
          image.parent = this;
          return image;
        }
      }
    } catch (Exception e) {
      // show error, but move on to the stuff below, see if it'll work
      printStackTrace(e);
    }

    if (loadImageFormats == null) {
      loadImageFormats = ImageIO.getReaderFormatNames();
    }
    if (loadImageFormats != null) {
      for (int i = 0; i < loadImageFormats.length; i++) {
        if (extension.equals(loadImageFormats[i])) {
          return loadImageIO(filename);
//          PImage image = loadImageIO(filename);
//          if (params != null) {
//            image.setParams(g, params);
//          }
//          return image;
        }
      }
    }

    // failed, could not load image after all those attempts
    System.err.println("Could not find a method to load " + filename);
    return null;
  }


  static private final String REQUEST_IMAGE_THREAD_PREFIX = "requestImage";
  // fixed-size thread pool used by requestImage()
  ExecutorService requestImagePool;


  public PImage requestImage(String filename) {
    return requestImage(filename, null);
  }


  /**
   * ( begin auto-generated from requestImage.xml )
   *
   * This function load images on a separate thread so that your sketch does
   * not freeze while images load during <b>setup()</b>. While the image is
   * loading, its width and height will be 0. If an error occurs while
   * loading the image, its width and height will be set to -1. You'll know
   * when the image has loaded properly because its width and height will be
   * greater than 0. Asynchronous image loading (particularly when
   * downloading from a server) can dramatically improve performance.<br />
   * <br/> <b>extension</b> parameter is used to determine the image type in
   * cases where the image filename does not end with a proper extension.
   * Specify the extension as the second parameter to <b>requestImage()</b>.
   *
   * ( end auto-generated )
   *
   * @webref image:loading_displaying
   * @param filename name of the file to load, can be .gif, .jpg, .tga, or a handful of other image types depending on your platform
   * @param extension the type of image to load, for example "png", "gif", "jpg"
   * @see PImage
   * @see PApplet#loadImage(String, String)
   */
  public PImage requestImage(String filename, String extension) {
    // Make sure saving to this file completes before trying to load it
    // Has to be called on main thread, because P2D and P3D need GL functions
    if (g != null) {
      g.awaitAsyncSaveCompletion(filename);
    }
    PImage vessel = createImage(0, 0, ARGB);

    // if the image loading thread pool hasn't been created, create it
    if (requestImagePool == null) {
      ThreadFactory factory = new ThreadFactory() {
        public Thread newThread(Runnable r) {
          return new Thread(r, REQUEST_IMAGE_THREAD_PREFIX);
        }
      };
      requestImagePool = Executors.newFixedThreadPool(4, factory);
    }
    requestImagePool.execute(() -> {
      PImage actual = loadImage(filename, extension);

      // An error message should have already printed
      if (actual == null) {
        vessel.width = -1;
        vessel.height = -1;

      } else {
        vessel.width = actual.width;
        vessel.height = actual.height;
        vessel.format = actual.format;
        vessel.pixels = actual.pixels;

        vessel.pixelWidth = actual.width;
        vessel.pixelHeight = actual.height;
        vessel.pixelDensity = 1;
      }
    });
    return vessel;
  }


  /**
   * Use Java 1.4 ImageIO methods to load an image.
   */
  protected PImage loadImageIO(String filename) {
    InputStream stream = createInput(filename);
    if (stream == null) {
      System.err.println("The image " + filename + " could not be found.");
      return null;
    }

    try {
      BufferedImage bi = ImageIO.read(stream);
      PImage outgoing = new PImage(bi.getWidth(), bi.getHeight());
      outgoing.parent = this;

      bi.getRGB(0, 0, outgoing.width, outgoing.height,
                outgoing.pixels, 0, outgoing.width);

      // check the alpha for this image
      // was gonna call getType() on the image to see if RGB or ARGB,
      // but it's not actually useful, since gif images will come through
      // as TYPE_BYTE_INDEXED, which means it'll still have to check for
      // the transparency. also, would have to iterate through all the other
      // types and guess whether alpha was in there, so.. just gonna stick
      // with the old method.
      outgoing.checkAlpha();

      stream.close();
      // return the image
      return outgoing;

    } catch (Exception e) {
      printStackTrace(e);
      return null;
    }
  }


  /**
   * Targa image loader for RLE-compressed TGA files.
   * <p>
   * Rewritten for 0115 to read/write RLE-encoded targa images.
   * For 0125, non-RLE encoded images are now supported, along with
   * images whose y-order is reversed (which is standard for TGA files).
   * <p>
   * A version of this function is in MovieMaker.java. Any fixes here
   * should be applied over in MovieMaker as well.
   * <p>
   * Known issue with RLE encoding and odd behavior in some apps:
   * https://github.com/processing/processing/issues/2096
   * Please help!
   */
  protected PImage loadImageTGA(String filename) throws IOException {
    InputStream is = createInput(filename);
    if (is == null) return null;

    byte header[] = new byte[18];
    int offset = 0;
    do {
      int count = is.read(header, offset, header.length - offset);
      if (count == -1) return null;
      offset += count;
    } while (offset < 18);

    /*
      header[2] image type code
      2  (0x02) - Uncompressed, RGB images.
      3  (0x03) - Uncompressed, black and white images.
      10 (0x0A) - Run-length encoded RGB images.
      11 (0x0B) - Compressed, black and white images. (grayscale?)

      header[16] is the bit depth (8, 24, 32)

      header[17] image descriptor (packed bits)
      0x20 is 32 = origin upper-left
      0x28 is 32 + 8 = origin upper-left + 32 bits

        7  6  5  4  3  2  1  0
      128 64 32 16  8  4  2  1
    */

    int format = 0;

    if (((header[2] == 3) || (header[2] == 11)) &&  // B&W, plus RLE or not
        (header[16] == 8) &&  // 8 bits
        ((header[17] == 0x8) || (header[17] == 0x28))) {  // origin, 32 bit
      format = ALPHA;

    } else if (((header[2] == 2) || (header[2] == 10)) &&  // RGB, RLE or not
               (header[16] == 24) &&  // 24 bits
               ((header[17] == 0x20) || (header[17] == 0))) {  // origin
      format = RGB;

    } else if (((header[2] == 2) || (header[2] == 10)) &&
               (header[16] == 32) &&
               ((header[17] == 0x8) || (header[17] == 0x28))) {  // origin, 32
      format = ARGB;
    }

    if (format == 0) {
      System.err.println("Unknown .tga file format for " + filename);
                         //" (" + header[2] + " " +
                         //(header[16] & 0xff) + " " +
                         //hex(header[17], 2) + ")");
      return null;
    }

    int w = ((header[13] & 0xff) << 8) + (header[12] & 0xff);
    int h = ((header[15] & 0xff) << 8) + (header[14] & 0xff);
    PImage outgoing = createImage(w, h, format);

    // where "reversed" means upper-left corner (normal for most of
    // the modernized world, but "reversed" for the tga spec)
    //boolean reversed = (header[17] & 0x20) != 0;
    // https://github.com/processing/processing/issues/1682
    boolean reversed = (header[17] & 0x20) == 0;

    if ((header[2] == 2) || (header[2] == 3)) {  // not RLE encoded
      if (reversed) {
        int index = (h-1) * w;
        switch (format) {
        case ALPHA:
          for (int y = h-1; y >= 0; y--) {
            for (int x = 0; x < w; x++) {
              outgoing.pixels[index + x] = is.read();
            }
            index -= w;
          }
          break;
        case RGB:
          for (int y = h-1; y >= 0; y--) {
            for (int x = 0; x < w; x++) {
              outgoing.pixels[index + x] =
                is.read() | (is.read() << 8) | (is.read() << 16) |
                0xff000000;
            }
            index -= w;
          }
          break;
        case ARGB:
          for (int y = h-1; y >= 0; y--) {
            for (int x = 0; x < w; x++) {
              outgoing.pixels[index + x] =
                is.read() | (is.read() << 8) | (is.read() << 16) |
                (is.read() << 24);
            }
            index -= w;
          }
        }
      } else {  // not reversed
        int count = w * h;
        switch (format) {
        case ALPHA:
          for (int i = 0; i < count; i++) {
            outgoing.pixels[i] = is.read();
          }
          break;
        case RGB:
          for (int i = 0; i < count; i++) {
            outgoing.pixels[i] =
              is.read() | (is.read() << 8) | (is.read() << 16) |
              0xff000000;
          }
          break;
        case ARGB:
          for (int i = 0; i < count; i++) {
            outgoing.pixels[i] =
              is.read() | (is.read() << 8) | (is.read() << 16) |
              (is.read() << 24);
          }
          break;
        }
      }

    } else {  // header[2] is 10 or 11
      int index = 0;
      int px[] = outgoing.pixels;

      while (index < px.length) {
        int num = is.read();
        boolean isRLE = (num & 0x80) != 0;
        if (isRLE) {
          num -= 127;  // (num & 0x7F) + 1
          int pixel = 0;
          switch (format) {
          case ALPHA:
            pixel = is.read();
            break;
          case RGB:
            pixel = 0xFF000000 |
              is.read() | (is.read() << 8) | (is.read() << 16);
            //(is.read() << 16) | (is.read() << 8) | is.read();
            break;
          case ARGB:
            pixel = is.read() |
              (is.read() << 8) | (is.read() << 16) | (is.read() << 24);
            break;
          }
          for (int i = 0; i < num; i++) {
            px[index++] = pixel;
            if (index == px.length) break;
          }
        } else {  // write up to 127 bytes as uncompressed
          num += 1;
          switch (format) {
          case ALPHA:
            for (int i = 0; i < num; i++) {
              px[index++] = is.read();
            }
            break;
          case RGB:
            for (int i = 0; i < num; i++) {
              px[index++] = 0xFF000000 |
                is.read() | (is.read() << 8) | (is.read() << 16);
              //(is.read() << 16) | (is.read() << 8) | is.read();
            }
            break;
          case ARGB:
            for (int i = 0; i < num; i++) {
              px[index++] = is.read() | //(is.read() << 24) |
                (is.read() << 8) | (is.read() << 16) | (is.read() << 24);
              //(is.read() << 16) | (is.read() << 8) | is.read();
            }
            break;
          }
        }
      }

      if (!reversed) {
        int[] temp = new int[w];
        for (int y = 0; y < h/2; y++) {
          int z = (h-1) - y;
          System.arraycopy(px, y*w, temp, 0, w);
          System.arraycopy(px, z*w, px, y*w, w);
          System.arraycopy(temp, 0, px, z*w, w);
        }
      }
    }
    is.close();
    return outgoing;
  }



  //////////////////////////////////////////////////////////////

  // DATA I/O


//  /**
//   * @webref input:files
//   * @brief Creates a new XML object
//   * @param name the name to be given to the root element of the new XML object
//   * @return an XML object, or null
//   * @see XML
//   * @see PApplet#loadXML(String)
//   * @see PApplet#parseXML(String)
//   * @see PApplet#saveXML(XML, String)
//   */
//  public XML createXML(String name) {
//    try {
//      return new XML(name);
//    } catch (Exception e) {
//      e.printStackTrace();
//      return null;
//    }
//  }


  /**
   * @webref input:files
   * @param filename name of a file in the data folder or a URL.
   * @see XML
   * @see PApplet#parseXML(String)
   * @see PApplet#saveXML(XML, String)
   * @see PApplet#loadBytes(String)
   * @see PApplet#loadStrings(String)
   * @see PApplet#loadTable(String)
   */
  public XML loadXML(String filename) {
    return loadXML(filename, null);
  }


  // version that uses 'options' though there are currently no supported options
  /**
   * @nowebref
   */
  public XML loadXML(String filename, String options) {
    try {
      BufferedReader reader = createReader(filename);
      if (reader != null) {
        return new XML(reader, options);
      }
      return null;

      // can't use catch-all exception, since it might catch the
      // RuntimeException about the incorrect case sensitivity
    } catch (IOException e) {
      throw new RuntimeException(e);

    } catch (ParserConfigurationException e) {
      throw new RuntimeException(e);

    } catch (SAXException e) {
      throw new RuntimeException(e);
    }
  }


  /**
   * @webref input:files
   * @brief Converts String content to an XML object
   * @param xmlString the content to be parsed as XML
   * @return an XML object, or null
   * @see XML
   * @see PApplet#loadXML(String)
   * @see PApplet#saveXML(XML, String)
   */
  public XML parseXML(String xmlString) {
    return parseXML(xmlString, null);
  }


  public XML parseXML(String xmlString, String options) {
    try {
      return XML.parse(xmlString, options);

    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }


  /**
   * @webref output:files
   * @param xml the XML object to save to disk
   * @param filename name of the file to write to
   * @see XML
   * @see PApplet#loadXML(String)
   * @see PApplet#parseXML(String)
   */
  public boolean saveXML(XML xml, String filename) {
    return saveXML(xml, filename, null);
  }

  /**
   * @nowebref
   */
  public boolean saveXML(XML xml, String filename, String options) {
    return xml.save(saveFile(filename), options);
  }

  /**
   * @webref input:files
   * @param input String to parse as a JSONObject
   * @see PApplet#loadJSONObject(String)
   * @see PApplet#saveJSONObject(JSONObject, String)
   */
  public JSONObject parseJSONObject(String input) {
    return new JSONObject(new StringReader(input));
  }


  /**
   * @webref input:files
   * @param filename name of a file in the data folder or a URL
   * @see JSONObject
   * @see JSONArray
   * @see PApplet#loadJSONArray(String)
   * @see PApplet#saveJSONObject(JSONObject, String)
   * @see PApplet#saveJSONArray(JSONArray, String)
   */
  public JSONObject loadJSONObject(String filename) {
    return new JSONObject(createReader(filename));
  }

  /**
   * @nowebref
   */
  static public JSONObject loadJSONObject(File file) {
    return new JSONObject(createReader(file));
  }


  /**
   * @webref output:files
   * @param json the JSONObject to save
   * @param filename the name of the file to save to
   * @see JSONObject
   * @see JSONArray
   * @see PApplet#loadJSONObject(String)
   * @see PApplet#loadJSONArray(String)
   * @see PApplet#saveJSONArray(JSONArray, String)
   */
  public boolean saveJSONObject(JSONObject json, String filename) {
    return saveJSONObject(json, filename, null);
  }

  /**
   * @param options "compact" and "indent=N", replace N with the number of spaces
   */
  public boolean saveJSONObject(JSONObject json, String filename, String options) {
    return json.save(saveFile(filename), options);
  }

/**
   * @webref input:files
   * @param input String to parse as a JSONArray
   * @see JSONObject
   * @see PApplet#loadJSONObject(String)
   * @see PApplet#saveJSONObject(JSONObject, String)
   */
  public JSONArray parseJSONArray(String input) {
    return new JSONArray(new StringReader(input));
  }


  /**
   * @webref input:files
   * @param filename name of a file in the data folder or a URL
   * @see JSONArray
   * @see PApplet#loadJSONObject(String)
   * @see PApplet#saveJSONObject(JSONObject, String)
   * @see PApplet#saveJSONArray(JSONArray, String)
   */
  public JSONArray loadJSONArray(String filename) {
    return new JSONArray(createReader(filename));
  }


  static public JSONArray loadJSONArray(File file) {
    return new JSONArray(createReader(file));
  }


  /**
   * @webref output:files
   * @param json the JSONArray to save
   * @param filename the name of the file to save to
   * @see JSONObject
   * @see JSONArray
   * @see PApplet#loadJSONObject(String)
   * @see PApplet#loadJSONArray(String)
   * @see PApplet#saveJSONObject(JSONObject, String)
   */
  public boolean saveJSONArray(JSONArray json, String filename) {
    return saveJSONArray(json, filename, null);
  }

  /**
   * @param options "compact" and "indent=N", replace N with the number of spaces
   */
  public boolean saveJSONArray(JSONArray json, String filename, String options) {
    return json.save(saveFile(filename), options);
  }



//  /**
//   * @webref input:files
//   * @see Table
//   * @see PApplet#loadTable(String)
//   * @see PApplet#saveTable(Table, String)
//   */
//  public Table createTable() {
//    return new Table();
//  }


  /**
   * @webref input:files
   * @param filename name of a file in the data folder or a URL.
   * @see Table
   * @see PApplet#saveTable(Table, String)
   * @see PApplet#loadBytes(String)
   * @see PApplet#loadStrings(String)
   * @see PApplet#loadXML(String)
   */
  public Table loadTable(String filename) {
    return loadTable(filename, null);
  }


  /**
   * Options may contain "header", "tsv", "csv", or "bin" separated by commas.
   *
   * Another option is "dictionary=filename.tsv", which allows users to
   * specify a "dictionary" file that contains a mapping of the column titles
   * and the data types used in the table file. This can be far more efficient
   * (in terms of speed and memory usage) for loading and parsing tables. The
   * dictionary file can only be tab separated values (.tsv) and its extension
   * will be ignored. This option was added in Processing 2.0.2.
   *
   * @param options may contain "header", "tsv", "csv", or "bin" separated by commas
   */
  public Table loadTable(String filename, String options) {
    try {
      String optionStr = Table.extensionOptions(true, filename, options);
      String[] optionList = trim(split(optionStr, ','));

      Table dictionary = null;
      for (String opt : optionList) {
        if (opt.startsWith("dictionary=")) {
          dictionary = loadTable(opt.substring(opt.indexOf('=') + 1), "tsv");
          return dictionary.typedParse(createInput(filename), optionStr);
        }
      }
      InputStream input = createInput(filename);
      if (input == null) {
        System.err.println(filename + " does not exist or could not be read");
        return null;
      }
      return new Table(input, optionStr);

    } catch (IOException e) {
      printStackTrace(e);
      return null;
    }
  }


  /**
   * @webref output:files
   * @param table the Table object to save to a file
   * @param filename the filename to which the Table should be saved
   * @see Table
   * @see PApplet#loadTable(String)
   */
  public boolean saveTable(Table table, String filename) {
    return saveTable(table, filename, null);
  }


  /**
   * @param options can be one of "tsv", "csv", "bin", or "html"
   */
  public boolean saveTable(Table table, String filename, String options) {
//    String ext = checkExtension(filename);
//    if (ext != null) {
//      if (ext.equals("csv") || ext.equals("tsv") || ext.equals("bin") || ext.equals("html")) {
//        if (options == null) {
//          options = ext;
//        } else {
//          options = ext + "," + options;
//        }
//      }
//    }

    try {
      // Figure out location and make sure the target path exists
      File outputFile = saveFile(filename);
      // Open a stream and take care of .gz if necessary
      return table.save(outputFile, options);

    } catch (IOException e) {
      printStackTrace(e);
      return false;
    }
  }



  //////////////////////////////////////////////////////////////

  // FONT I/O

  /**
   * ( begin auto-generated from loadFont.xml )
   *
   * Loads a font into a variable of type <b>PFont</b>. To load correctly,
   * fonts must be located in the data directory of the current sketch. To
   * create a font to use with Processing, select "Create Font..." from the
   * Tools menu. This will create a font in the format Processing requires
   * and also adds it to the current sketch's data directory.<br />
   * <br />
   * Like <b>loadImage()</b> and other functions that load data, the
   * <b>loadFont()</b> function should not be used inside <b>draw()</b>,
   * because it will slow down the sketch considerably, as the font will be
   * re-loaded from the disk (or network) on each frame.<br />
   * <br />
   * For most renderers, Processing displays fonts using the .vlw font
   * format, which uses images for each letter, rather than defining them
   * through vector data. When <b>hint(ENABLE_NATIVE_FONTS)</b> is used with
   * the JAVA2D renderer, the native version of a font will be used if it is
   * installed on the user's machine.<br />
   * <br />
   * Using <b>createFont()</b> (instead of loadFont) enables vector data to
   * be used with the JAVA2D (default) renderer setting. This can be helpful
   * when many font sizes are needed, or when using any renderer based on
   * JAVA2D, such as the PDF library.
   *
   * ( end auto-generated )
  * @webref typography:loading_displaying
  * @param filename name of the font to load
  * @see PFont
  * @see PGraphics#textFont(PFont, float)
  * @see PApplet#createFont(String, float, boolean, char[])
  */
  public PFont loadFont(String filename) {
    if (!filename.toLowerCase().endsWith(".vlw")) {
      throw new IllegalArgumentException("loadFont() is for .vlw files, try createFont()");
    }
    try {
      InputStream input = createInput(filename);
      return new PFont(input);

    } catch (Exception e) {
      die("Could not load font " + filename + ". " +
          "Make sure that the font has been copied " +
          "to the data folder of your sketch.", e);
    }
    return null;
  }


  public PFont createFont(String name, float size) {
    return createFont(name, size, true, null);
  }


  public PFont createFont(String name, float size, boolean smooth) {
    return createFont(name, size, smooth, null);
  }


  /**
   * ( begin auto-generated from createFont.xml )
   *
   * Dynamically converts a font to the format used by Processing from either
   * a font name that's installed on the computer, or from a .ttf or .otf
   * file inside the sketches "data" folder. This function is an advanced
   * feature for precise control. On most occasions you should create fonts
   * through selecting "Create Font..." from the Tools menu.
   * <br /><br />
   * Use the <b>PFont.list()</b> method to first determine the names for the
   * fonts recognized by the computer and are compatible with this function.
   * Because of limitations in Java, not all fonts can be used and some might
   * work with one operating system and not others. When sharing a sketch
   * with other people or posting it on the web, you may need to include a
   * .ttf or .otf version of your font in the data directory of the sketch
   * because other people might not have the font installed on their
   * computer. Only fonts that can legally be distributed should be included
   * with a sketch.
   * <br /><br />
   * The <b>size</b> parameter states the font size you want to generate. The
   * <b>smooth</b> parameter specifies if the font should be antialiased or
   * not, and the <b>charset</b> parameter is an array of chars that
   * specifies the characters to generate.
   * <br /><br />
   * This function creates a bitmapped version of a font in the same manner
   * as the Create Font tool. It loads a font by name, and converts it to a
   * series of images based on the size of the font. When possible, the
   * <b>text()</b> function will use a native font rather than the bitmapped
   * version created behind the scenes with <b>createFont()</b>. For
   * instance, when using P2D, the actual native version of the font will be
   * employed by the sketch, improving drawing quality and performance. With
   * the P3D renderer, the bitmapped version will be used. While this can
   * drastically improve speed and appearance, results are poor when
   * exporting if the sketch does not include the .otf or .ttf file, and the
   * requested font is not available on the machine running the sketch.
   *
   * ( end auto-generated )
   * @webref typography:loading_displaying
   * @param name name of the font to load
   * @param size point size of the font
   * @param smooth true for an antialiased font, false for aliased
   * @param charset array containing characters to be generated
   * @see PFont
   * @see PGraphics#textFont(PFont, float)
   * @see PGraphics#text(String, float, float, float, float)
   * @see PApplet#loadFont(String)
   */
  public PFont createFont(String name, float size,
                          boolean smooth, char[] charset) {
    if (g == null) {
      throw new RuntimeException("createFont() can only be used inside setup() or after setup() has been called.");
    }
    return g.createFont(name, size, smooth, charset);
  }



  //////////////////////////////////////////////////////////////

  // FILE/FOLDER SELECTION


  /*
  private Frame selectFrame;

  private Frame selectFrame() {
    if (frame != null) {
      selectFrame = frame;

    } else if (selectFrame == null) {
      Component comp = getParent();
      while (comp != null) {
        if (comp instanceof Frame) {
          selectFrame = (Frame) comp;
          break;
        }
        comp = comp.getParent();
      }
      // Who you callin' a hack?
      if (selectFrame == null) {
        selectFrame = new Frame();
      }
    }
    return selectFrame;
  }
  */


  static private boolean lookAndFeelCheck;

  /**
   * Initialize the Look & Feel if it hasn't been already.
   * Call this before using any Swing-related code in PApplet methods.
   */
  static private void checkLookAndFeel() {
    if (!lookAndFeelCheck) {
      if (platform == WINDOWS) {
        // Windows is defaulting to Metal or something else awful.
        // Which also is not scaled properly with HiDPI interfaces.
        try {
          UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        } catch (Exception e) { }
      }
      lookAndFeelCheck = true;
    }
  }

  /**
   * Open a platform-specific file chooser dialog to select a file for input.
   * After the selection is made, the selected File will be passed to the
   * 'callback' function. If the dialog is closed or canceled, null will be
   * sent to the function, so that the program is not waiting for additional
   * input. The callback is necessary because of how threading works.
   *
   * <pre>
   * void setup() {
   *   selectInput("Select a file to process:", "fileSelected");
   * }
   *
   * void fileSelected(File selection) {
   *   if (selection == null) {
   *     println("Window was closed or the user hit cancel.");
   *   } else {
   *     println("User selected " + fileSeleted.getAbsolutePath());
   *   }
   * }
   * </pre>
   *
   * For advanced users, the method must be 'public', which is true for all
   * methods inside a sketch when run from the PDE, but must explicitly be
   * set when using Eclipse or other development environments.
   *
   * @webref input:files
   * @param prompt message to the user
   * @param callback name of the method to be called when the selection is made
   */
  public void selectInput(String prompt, String callback) {
    selectInput(prompt, callback, null);
  }


  public void selectInput(String prompt, String callback, File file) {
    selectInput(prompt, callback, file, this);
  }


  public void selectInput(String prompt, String callback,
                          File file, Object callbackObject) {
    selectInput(prompt, callback, file, callbackObject, null, this);  //selectFrame());
  }


  static public void selectInput(String prompt, String callbackMethod,
                                 File file, Object callbackObject, Frame parent,
                                 PApplet sketch) {
    selectImpl(prompt, callbackMethod, file, callbackObject, parent, FileDialog.LOAD, sketch);
  }


  static public void selectInput(String prompt, String callbackMethod,
                                 File file, Object callbackObject, Frame parent) {
    selectImpl(prompt, callbackMethod, file, callbackObject, parent, FileDialog.LOAD, null);
  }


  /**
   * See selectInput() for details.
   *
   * @webref output:files
   * @param prompt message to the user
   * @param callback name of the method to be called when the selection is made
   */
  public void selectOutput(String prompt, String callback) {
    selectOutput(prompt, callback, null);
  }


  public void selectOutput(String prompt, String callback, File file) {
    selectOutput(prompt, callback, file, this);
  }


  public void selectOutput(String prompt, String callback,
                           File file, Object callbackObject) {
    selectOutput(prompt, callback, file, callbackObject, null, this); //selectFrame());
  }


  static public void selectOutput(String prompt, String callbackMethod,
                                  File file, Object callbackObject, Frame parent) {
    selectImpl(prompt, callbackMethod, file, callbackObject, parent, FileDialog.SAVE, null);
  }


  static public void selectOutput(String prompt, String callbackMethod,
                                  File file, Object callbackObject, Frame parent,
                                  PApplet sketch) {
    selectImpl(prompt, callbackMethod, file, callbackObject, parent, FileDialog.SAVE, sketch);
  }


  // Will remove the 'sketch' parameter once we get an upstream JOGL fix
  // https://github.com/processing/processing/issues/3831
  static protected void selectImpl(final String prompt,
                                   final String callbackMethod,
                                   final File defaultSelection,
                                   final Object callbackObject,
                                   final Frame parentFrame,
                                   final int mode,
                                   final PApplet sketch) {
    EventQueue.invokeLater(new Runnable() {
      public void run() {
        File selectedFile = null;

        boolean hide = (sketch != null) &&
          (sketch.g instanceof PGraphicsOpenGL) && (platform == WINDOWS);
        if (hide) sketch.surface.setVisible(false);

        if (useNativeSelect) {
          FileDialog dialog = new FileDialog(parentFrame, prompt, mode);
          if (defaultSelection != null) {
            dialog.setDirectory(defaultSelection.getParent());
            dialog.setFile(defaultSelection.getName());
          }

          dialog.setVisible(true);
          String directory = dialog.getDirectory();
          String filename = dialog.getFile();
          if (filename != null) {
            selectedFile = new File(directory, filename);
          }

        } else {
          JFileChooser chooser = new JFileChooser();
          chooser.setDialogTitle(prompt);
          if (defaultSelection != null) {
            chooser.setSelectedFile(defaultSelection);
          }

          int result = -1;
          if (mode == FileDialog.SAVE) {
            result = chooser.showSaveDialog(parentFrame);
          } else if (mode == FileDialog.LOAD) {
            result = chooser.showOpenDialog(parentFrame);
          }
          if (result == JFileChooser.APPROVE_OPTION) {
            selectedFile = chooser.getSelectedFile();
          }
        }

        if (hide) sketch.surface.setVisible(true);
        selectCallback(selectedFile, callbackMethod, callbackObject);
      }
    });
  }


  /**
   * See selectInput() for details.
   *
   * @webref input:files
   * @param prompt message to the user
   * @param callback name of the method to be called when the selection is made
   */
  public void selectFolder(String prompt, String callback) {
    selectFolder(prompt, callback, null);
  }


  public void selectFolder(String prompt, String callback, File file) {
    selectFolder(prompt, callback, file, this);
  }


  public void selectFolder(String prompt, String callback,
                           File file, Object callbackObject) {
    selectFolder(prompt, callback, file, callbackObject, null, this); //selectFrame());
  }


  static public void selectFolder(final String prompt,
                                  final String callbackMethod,
                                  final File defaultSelection,
                                  final Object callbackObject,
                                  final Frame parentFrame) {
    selectFolder(prompt, callbackMethod, defaultSelection, callbackObject, parentFrame, null);
  }


  // Will remove the 'sketch' parameter once we get an upstream JOGL fix
  // https://github.com/processing/processing/issues/3831
  static public void selectFolder(final String prompt,
                                  final String callbackMethod,
                                  final File defaultSelection,
                                  final Object callbackObject,
                                  final Frame parentFrame,
                                  final PApplet sketch) {
    EventQueue.invokeLater(new Runnable() {
      public void run() {
        File selectedFile = null;

        boolean hide = (sketch != null) &&
          (sketch.g instanceof PGraphicsOpenGL) && (platform == WINDOWS);
        if (hide) sketch.surface.setVisible(false);

        if (platform == MACOSX && useNativeSelect != false) {
          FileDialog fileDialog =
            new FileDialog(parentFrame, prompt, FileDialog.LOAD);
          if (defaultSelection != null) {
            fileDialog.setDirectory(defaultSelection.getAbsolutePath());
          }
          System.setProperty("apple.awt.fileDialogForDirectories", "true");
          fileDialog.setVisible(true);
          System.setProperty("apple.awt.fileDialogForDirectories", "false");
          String filename = fileDialog.getFile();
          if (filename != null) {
            selectedFile = new File(fileDialog.getDirectory(), fileDialog.getFile());
          }
        } else {
          checkLookAndFeel();
          JFileChooser fileChooser = new JFileChooser();
          fileChooser.setDialogTitle(prompt);
          fileChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
          if (defaultSelection != null) {
            fileChooser.setCurrentDirectory(defaultSelection);
          }

          int result = fileChooser.showOpenDialog(parentFrame);
          if (result == JFileChooser.APPROVE_OPTION) {
            selectedFile = fileChooser.getSelectedFile();
          }
        }

        if (hide) sketch.surface.setVisible(true);
        selectCallback(selectedFile, callbackMethod, callbackObject);
      }
    });
  }


  static private void selectCallback(File selectedFile,
                                     String callbackMethod,
                                     Object callbackObject) {
    try {
      Class<?> callbackClass = callbackObject.getClass();
      Method selectMethod =
        callbackClass.getMethod(callbackMethod, new Class[] { File.class });
      selectMethod.invoke(callbackObject, new Object[] { selectedFile });

    } catch (IllegalAccessException iae) {
      System.err.println(callbackMethod + "() must be public");

    } catch (InvocationTargetException ite) {
      ite.printStackTrace();

    } catch (NoSuchMethodException nsme) {
      System.err.println(callbackMethod + "() could not be found");
    }
  }



  //////////////////////////////////////////////////////////////

  // LISTING DIRECTORIES


  public String[] listPaths(String path, String... options) {
    File[] list = listFiles(path, options);

    int offset = 0;
    for (String opt : options) {
      if (opt.equals("relative")) {
        if (!path.endsWith(File.pathSeparator)) {
          path += File.pathSeparator;
        }
        offset = path.length();
        break;
      }
    }
    String[] outgoing = new String[list.length];
    for (int i = 0; i < list.length; i++) {
      // as of Java 1.8, substring(0) returns the original object
      outgoing[i] = list[i].getAbsolutePath().substring(offset);
    }
    return outgoing;
  }


  public File[] listFiles(String path, String... options) {
    File file = new File(path);
    // if not an absolute path, make it relative to the sketch folder
    if (!file.isAbsolute()) {
      file = sketchFile(path);
    }
    return listFiles(file, options);
  }


  // "relative" -> no effect with the Files version, but important for listPaths
  // "recursive"
  // "extension=js" or "extensions=js|csv|txt" (no dot)
  // "directories" -> only directories
  // "files" -> only files
  // "hidden" -> include hidden files (prefixed with .) disabled by default
  static public File[] listFiles(File base, String... options) {
    boolean recursive = false;
    String[] extensions = null;
    boolean directories = true;
    boolean files = true;
    boolean hidden = false;

    for (String opt : options) {
      if (opt.equals("recursive")) {
        recursive = true;
      } else if (opt.startsWith("extension=")) {
        extensions = new String[] { opt.substring(10) };
      } else if (opt.startsWith("extensions=")) {
        extensions = split(opt.substring(10), ',');
      } else if (opt.equals("files")) {
        directories = false;
      } else if (opt.equals("directories")) {
        files = false;
      } else if (opt.equals("hidden")) {
        hidden = true;
      } else if (opt.equals("relative")) {
        // ignored
      } else {
        throw new RuntimeException(opt + " is not a listFiles() option");
      }
    }

    if (extensions != null) {
      for (int i = 0; i < extensions.length; i++) {
        extensions[i] = "." + extensions[i];
      }
    }

    if (!files && !directories) {
      // just make "only files" and "only directories" mean... both
      files = true;
      directories = true;
    }

    if (!base.canRead()) {
      return null;
    }

    List<File> outgoing = new ArrayList<>();
    listFilesImpl(base, recursive, extensions, hidden, directories, files, outgoing);
    return outgoing.toArray(new File[0]);
  }


  static void listFilesImpl(File folder, boolean recursive,
                            String[] extensions, boolean hidden,
                            boolean directories, boolean files,
                            List<File> list) {
    File[] items = folder.listFiles();
    if (items != null) {
      for (File item : items) {
        String name = item.getName();
        if (!hidden && name.charAt(0) == '.') {
          continue;
        }
        if (item.isDirectory()) {
          if (recursive) {
            listFilesImpl(item, recursive, extensions, hidden, directories, files, list);
          }
          if (directories) {
            list.add(item);
          }
        } else if (files) {
          if (extensions == null) {
            list.add(item);
          } else {
            for (String ext : extensions) {
              if (item.getName().toLowerCase().endsWith(ext)) {
                list.add(item);
              }
            }
          }
        }
      }
    }
  }



  //////////////////////////////////////////////////////////////

  // EXTENSIONS


  /**
   * Get the compression-free extension for this filename.
   * @param filename The filename to check
   * @return an extension, skipping past .gz if it's present
   */
  static public String checkExtension(String filename) {
    // Don't consider the .gz as part of the name, createInput()
    // and createOuput() will take care of fixing that up.
    if (filename.toLowerCase().endsWith(".gz")) {
      filename = filename.substring(0, filename.length() - 3);
    }
    int dotIndex = filename.lastIndexOf('.');
    if (dotIndex != -1) {
      return filename.substring(dotIndex + 1).toLowerCase();
    }
    return null;
  }



  //////////////////////////////////////////////////////////////

  // READERS AND WRITERS


  /**
   * ( begin auto-generated from createReader.xml )
   *
   * Creates a <b>BufferedReader</b> object that can be used to read files
   * line-by-line as individual <b>String</b> objects. This is the complement
   * to the <b>createWriter()</b> function.
   * <br/> <br/>
   * Starting with Processing release 0134, all files loaded and saved by the
   * Processing API use UTF-8 encoding. In previous releases, the default
   * encoding for your platform was used, which causes problems when files
   * are moved to other platforms.
   *
   * ( end auto-generated )
   * @webref input:files
   * @param filename name of the file to be opened
   * @see BufferedReader
   * @see PApplet#createWriter(String)
   * @see PrintWriter
   */
  public BufferedReader createReader(String filename) {
    InputStream is = createInput(filename);
    if (is == null) {
      System.err.println("The file \"" + filename + "\" " +
                       "is missing or inaccessible, make sure " +
                       "the URL is valid or that the file has been " +
                       "added to your sketch and is readable.");
      return null;
    }
    return createReader(is);
  }


  /**
   * @nowebref
   */
  static public BufferedReader createReader(File file) {
    try {
      InputStream is = new FileInputStream(file);
      if (file.getName().toLowerCase().endsWith(".gz")) {
        is = new GZIPInputStream(is);
      }
      return createReader(is);

    } catch (IOException e) {
      // Re-wrap rather than forcing novices to learn about exceptions
      throw new RuntimeException(e);
    }
  }


  /**
   * @nowebref
   * I want to read lines from a stream. If I have to type the
   * following lines any more I'm gonna send Sun my medical bills.
   */
  static public BufferedReader createReader(InputStream input) {
    InputStreamReader isr =
      new InputStreamReader(input, StandardCharsets.UTF_8);

    BufferedReader reader = new BufferedReader(isr);
    // consume the Unicode BOM (byte order marker) if present
    try {
      reader.mark(1);
      int c = reader.read();
      // if not the BOM, back up to the beginning again
      if (c != '\uFEFF') {
        reader.reset();
      }
    } catch (IOException e) {
      e.printStackTrace();
    }
    return reader;
  }


  /**
   * ( begin auto-generated from createWriter.xml )
   *
   * Creates a new file in the sketch folder, and a <b>PrintWriter</b> object
   * to write to it. For the file to be made correctly, it should be flushed
   * and must be closed with its <b>flush()</b> and <b>close()</b> methods
   * (see above example).
   * <br/> <br/>
   * Starting with Processing release 0134, all files loaded and saved by the
   * Processing API use UTF-8 encoding. In previous releases, the default
   * encoding for your platform was used, which causes problems when files
   * are moved to other platforms.
   *
   * ( end auto-generated )
   *
   * @webref output:files
   * @param filename name of the file to be created
   * @see PrintWriter
   * @see PApplet#createReader
   * @see BufferedReader
   */
  public PrintWriter createWriter(String filename) {
    return createWriter(saveFile(filename));
  }


  /**
   * @nowebref
   * I want to print lines to a file. I have RSI from typing these
   * eight lines of code so many times.
   */
  static public PrintWriter createWriter(File file) {
    if (file == null) {
      throw new RuntimeException("File passed to createWriter() was null");
    }
    try {
      createPath(file);  // make sure in-between folders exist
      OutputStream output = new FileOutputStream(file);
      if (file.getName().toLowerCase().endsWith(".gz")) {
        output = new GZIPOutputStream(output);
      }
      return createWriter(output);

    } catch (Exception e) {
      throw new RuntimeException("Couldn't create a writer for " +
                                 file.getAbsolutePath(), e);
    }
  }

  /**
   * @nowebref
   * I want to print lines to a file. Why am I always explaining myself?
   * It's the JavaSoft API engineers who need to explain themselves.
   */
  static public PrintWriter createWriter(OutputStream output) {
    BufferedOutputStream bos = new BufferedOutputStream(output, 8192);
    OutputStreamWriter osw =
      new OutputStreamWriter(bos, StandardCharsets.UTF_8);
    return new PrintWriter(osw);
  }



  //////////////////////////////////////////////////////////////

  // FILE INPUT


  /**
   * ( begin auto-generated from createInput.xml )
   *
   * This is a function for advanced programmers to open a Java InputStream.
   * It's useful if you want to use the facilities provided by PApplet to
   * easily open files from the data folder or from a URL, but want an
   * InputStream object so that you can use other parts of Java to take more
   * control of how the stream is read.<br />
   * <br />
   * The filename passed in can be:<br />
   * - A URL, for instance <b>openStream("http://processing.org/")</b><br />
   * - A file in the sketch's <b>data</b> folder<br />
   * - The full path to a file to be opened locally (when running as an
   * application)<br />
   * <br />
   * If the requested item doesn't exist, null is returned. If not online,
   * this will also check to see if the user is asking for a file whose name
   * isn't properly capitalized. If capitalization is different, an error
   * will be printed to the console. This helps prevent issues that appear
   * when a sketch is exported to the web, where case sensitivity matters, as
   * opposed to running from inside the Processing Development Environment on
   * Windows or Mac OS, where case sensitivity is preserved but ignored.<br />
   * <br />
   * If the file ends with <b>.gz</b>, the stream will automatically be gzip
   * decompressed. If you don't want the automatic decompression, use the
   * related function <b>createInputRaw()</b>.
   * <br />
   * In earlier releases, this function was called <b>openStream()</b>.<br />
   * <br />
   *
   * ( end auto-generated )
   *
   * <h3>Advanced</h3>
   * Simplified method to open a Java InputStream.
   * <p>
   * This method is useful if you want to use the facilities provided
   * by PApplet to easily open things from the data folder or from a URL,
   * but want an InputStream object so that you can use other Java
   * methods to take more control of how the stream is read.
   * <p>
   * If the requested item doesn't exist, null is returned.
   * (Prior to 0096, die() would be called, killing the applet)
   * <p>
   * For 0096+, the "data" folder is exported intact with subfolders,
   * and openStream() properly handles subdirectories from the data folder
   * <p>
   * If not online, this will also check to see if the user is asking
   * for a file whose name isn't properly capitalized. This helps prevent
   * issues when a sketch is exported to the web, where case sensitivity
   * matters, as opposed to Windows and the Mac OS default where
   * case sensitivity is preserved but ignored.
   * <p>
   * It is strongly recommended that libraries use this method to open
   * data files, so that the loading sequence is handled in the same way
   * as functions like loadBytes(), loadImage(), etc.
   * <p>
   * The filename passed in can be:
   * <UL>
   * <LI>A URL, for instance openStream("http://processing.org/");
   * <LI>A file in the sketch's data folder
   * <LI>Another file to be opened locally (when running as an application)
   * </UL>
   *
   * @webref input:files
   * @param filename the name of the file to use as input
   * @see PApplet#createOutput(String)
   * @see PApplet#selectOutput(String,String)
   * @see PApplet#selectInput(String,String)
   *
   */
  public InputStream createInput(String filename) {
    InputStream input = createInputRaw(filename);
    if (input != null) {
      // if it's gzip-encoded, automatically decode
      final String lower = filename.toLowerCase();
      if (lower.endsWith(".gz") || lower.endsWith(".svgz")) {
        try {
          // buffered has to go *around* the GZ, otherwise 25x slower
          return new BufferedInputStream(new GZIPInputStream(input));

        } catch (IOException e) {
          printStackTrace(e);
        }
      } else {
        return new BufferedInputStream(input);
      }
    }
    return null;
  }


  /**
   * Call openStream() without automatic gzip decompression.
   */
  public InputStream createInputRaw(String filename) {
    if (filename == null) return null;

    if (sketchPath == null) {
      System.err.println("The sketch path is not set.");
      throw new RuntimeException("Files must be loaded inside setup() or after it has been called.");
    }

    if (filename.length() == 0) {
      // an error will be called by the parent function
      //System.err.println("The filename passed to openStream() was empty.");
      return null;
    }

    // First check whether this looks like a URL
    if (filename.contains(":")) {  // at least smells like URL
      try {
        URL url = new URL(filename);
        URLConnection conn = url.openConnection();

        if (conn instanceof HttpURLConnection) {
          HttpURLConnection httpConn = (HttpURLConnection) conn;
          // Will not handle a protocol change (see below)
          httpConn.setInstanceFollowRedirects(true);
          int response = httpConn.getResponseCode();
          // Default won't follow HTTP -> HTTPS redirects for security reasons
          // http://stackoverflow.com/a/1884427
          if (response >= 300 && response < 400) {
            String newLocation = httpConn.getHeaderField("Location");
            return createInputRaw(newLocation);
          }
          return conn.getInputStream();
        } else if (conn instanceof JarURLConnection) {
          return url.openStream();
        }
      } catch (MalformedURLException mfue) {
        // not a url, that's fine

      } catch (FileNotFoundException fnfe) {
        // Added in 0119 b/c Java 1.5 throws FNFE when URL not available.
        // http://dev.processing.org/bugs/show_bug.cgi?id=403

      } catch (IOException e) {
        // changed for 0117, shouldn't be throwing exception
        printStackTrace(e);
        //System.err.println("Error downloading from URL " + filename);
        return null;
        //throw new RuntimeException("Error downloading from URL " + filename);
      }
    }

    InputStream stream = null;

    // Moved this earlier than the getResourceAsStream() checks, because
    // calling getResourceAsStream() on a directory lists its contents.
    // http://dev.processing.org/bugs/show_bug.cgi?id=716
    try {
      // First see if it's in a data folder. This may fail by throwing
      // a SecurityException. If so, this whole block will be skipped.
      File file = new File(dataPath(filename));
      if (!file.exists()) {
        // next see if it's just in the sketch folder
        file = sketchFile(filename);
      }

      if (file.isDirectory()) {
        return null;
      }
      if (file.exists()) {
        try {
          // handle case sensitivity check
          String filePath = file.getCanonicalPath();
          String filenameActual = new File(filePath).getName();
          // make sure there isn't a subfolder prepended to the name
          String filenameShort = new File(filename).getName();
          // if the actual filename is the same, but capitalized
          // differently, warn the user.
          //if (filenameActual.equalsIgnoreCase(filenameShort) &&
          //!filenameActual.equals(filenameShort)) {
          if (!filenameActual.equals(filenameShort)) {
            throw new RuntimeException("This file is named " +
                                       filenameActual + " not " +
                                       filename + ". Rename the file " +
                                       "or change your code.");
          }
        } catch (IOException e) { }
      }

      // if this file is ok, may as well just load it
      stream = new FileInputStream(file);
      if (stream != null) return stream;

      // have to break these out because a general Exception might
      // catch the RuntimeException being thrown above
    } catch (IOException ioe) {
    } catch (SecurityException se) { }

    // Using getClassLoader() prevents java from converting dots
    // to slashes or requiring a slash at the beginning.
    // (a slash as a prefix means that it'll load from the root of
    // the jar, rather than trying to dig into the package location)
    ClassLoader cl = getClass().getClassLoader();

    // by default, data files are exported to the root path of the jar.
    // (not the data folder) so check there first.
    stream = cl.getResourceAsStream("data/" + filename);
    if (stream != null) {
      String cn = stream.getClass().getName();
      // this is an irritation of sun's java plug-in, which will return
      // a non-null stream for an object that doesn't exist. like all good
      // things, this is probably introduced in java 1.5. awesome!
      // http://dev.processing.org/bugs/show_bug.cgi?id=359
      if (!cn.equals("sun.plugin.cache.EmptyInputStream")) {
        return stream;
      }
    }

    // When used with an online script, also need to check without the
    // data folder, in case it's not in a subfolder called 'data'.
    // http://dev.processing.org/bugs/show_bug.cgi?id=389
    stream = cl.getResourceAsStream(filename);
    if (stream != null) {
      String cn = stream.getClass().getName();
      if (!cn.equals("sun.plugin.cache.EmptyInputStream")) {
        return stream;
      }
    }

    try {
      // attempt to load from a local file, used when running as
      // an application, or as a signed applet
      try {  // first try to catch any security exceptions
        try {
          stream = new FileInputStream(dataPath(filename));
          if (stream != null) return stream;
        } catch (IOException e2) { }

        try {
          stream = new FileInputStream(sketchPath(filename));
          if (stream != null) return stream;
        } catch (Exception e) { }  // ignored

        try {
          stream = new FileInputStream(filename);
          if (stream != null) return stream;
        } catch (IOException e1) { }

      } catch (SecurityException se) { }  // online, whups

    } catch (Exception e) {
      printStackTrace(e);
    }

    return null;
  }


  /**
   * @nowebref
   */
  static public InputStream createInput(File file) {
    if (file == null) {
      throw new IllegalArgumentException("File passed to createInput() was null");
    }
    if (!file.exists()) {
      System.err.println(file + " does not exist, createInput() will return null");
      return null;
    }
    try {
      InputStream input = new FileInputStream(file);
      final String lower = file.getName().toLowerCase();
      if (lower.endsWith(".gz") || lower.endsWith(".svgz")) {
        return new BufferedInputStream(new GZIPInputStream(input));
      }
      return new BufferedInputStream(input);

    } catch (IOException e) {
      System.err.println("Could not createInput() for " + file);
      e.printStackTrace();
      return null;
    }
  }


  /**
   * ( begin auto-generated from loadBytes.xml )
   *
   * Reads the contents of a file or url and places it in a byte array. If a
   * file is specified, it must be located in the sketch's "data"
   * directory/folder.<br />
   * <br />
   * The filename parameter can also be a URL to a file found online. For
   * security reasons, a Processing sketch found online can only download
   * files from the same server from which it came. Getting around this
   * restriction requires a <a
   * href="http://wiki.processing.org/w/Sign_an_Applet">signed applet</a>.
   *
   * ( end auto-generated )
   * @webref input:files
   * @param filename name of a file in the data folder or a URL.
   * @see PApplet#loadStrings(String)
   * @see PApplet#saveStrings(String, String[])
   * @see PApplet#saveBytes(String, byte[])
   *
   */
  public byte[] loadBytes(String filename) {
    String lower = filename.toLowerCase();
    // If it's not a .gz file, then we might be able to uncompress it into
    // a fixed-size buffer, which should help speed because we won't have to
    // reallocate and resize the target array each time it gets full.
    if (!lower.endsWith(".gz")) {
      // If this looks like a URL, try to load it that way. Use the fact that
      // URL connections may have a content length header to size the array.
      if (filename.contains(":")) {  // at least smells like URL
        try {
          URL url = new URL(filename);
          URLConnection conn = url.openConnection();
          InputStream input = null;
          int length = -1;

          if (conn instanceof HttpURLConnection) {
            HttpURLConnection httpConn = (HttpURLConnection) conn;
            // Will not handle a protocol change (see below)
            httpConn.setInstanceFollowRedirects(true);
            int response = httpConn.getResponseCode();
            // Default won't follow HTTP -> HTTPS redirects for security reasons
            // http://stackoverflow.com/a/1884427
            if (response >= 300 && response < 400) {
              String newLocation = httpConn.getHeaderField("Location");
              return loadBytes(newLocation);
            }
            length = conn.getContentLength();
            input = conn.getInputStream();
          } else if (conn instanceof JarURLConnection) {
            length = conn.getContentLength();
            input = url.openStream();
          }

          if (input != null) {
            byte[] buffer = null;
            if (length != -1) {
              buffer = new byte[length];
              int count;
              int offset = 0;
              while ((count = input.read(buffer, offset, length - offset)) > 0) {
                offset += count;
              }
            } else {
              buffer = loadBytes(input);
            }
            input.close();
            return buffer;
          }
        } catch (MalformedURLException mfue) {
          // not a url, that's fine

        } catch (FileNotFoundException fnfe) {
          // Java 1.5+ throws FNFE when URL not available
          // http://dev.processing.org/bugs/show_bug.cgi?id=403

        } catch (IOException e) {
          printStackTrace(e);
          return null;
        }
      }
    }

    InputStream is = createInput(filename);
    if (is != null) {
      byte[] outgoing = loadBytes(is);
      try {
        is.close();
      } catch (IOException e) {
        printStackTrace(e);  // shouldn't happen
      }
      return outgoing;
    }

    System.err.println("The file \"" + filename + "\" " +
                       "is missing or inaccessible, make sure " +
                       "the URL is valid or that the file has been " +
                       "added to your sketch and is readable.");
    return null;
  }


  /**
   * @nowebref
   */
  static public byte[] loadBytes(InputStream input) {
    try {
      ByteArrayOutputStream out = new ByteArrayOutputStream();
      byte[] buffer = new byte[4096];

      int bytesRead = input.read(buffer);
      while (bytesRead != -1) {
        out.write(buffer, 0, bytesRead);
        bytesRead = input.read(buffer);
      }
      out.flush();
      return out.toByteArray();

    } catch (IOException e) {
      e.printStackTrace();
    }
    return null;
  }


  /**
   * @nowebref
   */
  static public byte[] loadBytes(File file) {
    if (!file.exists()) {
      System.err.println(file + " does not exist, loadBytes() will return null");
      return null;
    }

    try {
      InputStream input;
      int length;

      if (file.getName().toLowerCase().endsWith(".gz")) {
        RandomAccessFile raf = new RandomAccessFile(file, "r");
        raf.seek(raf.length() - 4);
        int b4 = raf.read();
        int b3 = raf.read();
        int b2 = raf.read();
        int b1 = raf.read();
        length = (b1 << 24) | (b2 << 16) + (b3 << 8) + b4;
        raf.close();

        // buffered has to go *around* the GZ, otherwise 25x slower
        input = new BufferedInputStream(new GZIPInputStream(new FileInputStream(file)));

      } else {
        long len = file.length();
        // http://stackoverflow.com/a/3039805
        int maxArraySize = Integer.MAX_VALUE - 5;
        if (len > maxArraySize) {
          System.err.println("Cannot use loadBytes() on a file larger than " + maxArraySize);
          return null;
        }
        length = (int) len;
        input = new BufferedInputStream(new FileInputStream(file));
      }
      byte[] buffer = new byte[length];
      int count;
      int offset = 0;
      // count will come back 0 when complete (or -1 if somehow going long?)
      while ((count = input.read(buffer, offset, length - offset)) > 0) {
        offset += count;
      }
      input.close();
      return buffer;

    } catch (IOException e) {
      e.printStackTrace();
      return null;
    }
  }


  /**
   * @nowebref
   */
  static public String[] loadStrings(File file) {
    if (!file.exists()) {
      System.err.println(file + " does not exist, loadStrings() will return null");
      return null;
    }

    InputStream is = createInput(file);
    if (is != null) {
      String[] outgoing = loadStrings(is);
      try {
        is.close();
      } catch (IOException e) {
        e.printStackTrace();
      }
      return outgoing;
    }
    return null;
  }


  /**
   * ( begin auto-generated from loadStrings.xml )
   *
   * Reads the contents of a file or url and creates a String array of its
   * individual lines. If a file is specified, it must be located in the
   * sketch's "data" directory/folder.<br />
   * <br />
   * The filename parameter can also be a URL to a file found online. For
   * security reasons, a Processing sketch found online can only download
   * files from the same server from which it came. Getting around this
   * restriction requires a <a
   * href="http://wiki.processing.org/w/Sign_an_Applet">signed applet</a>.
   * <br />
   * If the file is not available or an error occurs, <b>null</b> will be
   * returned and an error message will be printed to the console. The error
   * message does not halt the program, however the null value may cause a
   * NullPointerException if your code does not check whether the value
   * returned is null.
   * <br/> <br/>
   * Starting with Processing release 0134, all files loaded and saved by the
   * Processing API use UTF-8 encoding. In previous releases, the default
   * encoding for your platform was used, which causes problems when files
   * are moved to other platforms.
   *
   * ( end auto-generated )
   *
   * <h3>Advanced</h3>
   * Load data from a file and shove it into a String array.
   * <p>
   * Exceptions are handled internally, when an error, occurs, an
   * exception is printed to the console and 'null' is returned,
   * but the program continues running. This is a tradeoff between
   * 1) showing the user that there was a problem but 2) not requiring
   * that all i/o code is contained in try/catch blocks, for the sake
   * of new users (or people who are just trying to get things done
   * in a "scripting" fashion. If you want to handle exceptions,
   * use Java methods for I/O.
   *
   * @webref input:files
   * @param filename name of the file or url to load
   * @see PApplet#loadBytes(String)
   * @see PApplet#saveStrings(String, String[])
   * @see PApplet#saveBytes(String, byte[])
   */
  public String[] loadStrings(String filename) {
    InputStream is = createInput(filename);
    if (is != null) {
      String[] strArr = loadStrings(is);
      try {
        is.close();
      } catch (IOException e) {
        printStackTrace(e);
      }
      return strArr;
    }

    System.err.println("The file \"" + filename + "\" " +
                       "is missing or inaccessible, make sure " +
                       "the URL is valid or that the file has been " +
                       "added to your sketch and is readable.");
    return null;
  }

  /**
   * @nowebref
   */
  static public String[] loadStrings(InputStream input) {
    try {
      BufferedReader reader =
        new BufferedReader(new InputStreamReader(input, "UTF-8"));
      return loadStrings(reader);
    } catch (IOException e) {
      e.printStackTrace();
    }
    return null;
  }


  static public String[] loadStrings(BufferedReader reader) {
    try {
      String lines[] = new String[100];
      int lineCount = 0;
      String line = null;
      while ((line = reader.readLine()) != null) {
        if (lineCount == lines.length) {
          String temp[] = new String[lineCount << 1];
          System.arraycopy(lines, 0, temp, 0, lineCount);
          lines = temp;
        }
        lines[lineCount++] = line;
      }
      reader.close();

      if (lineCount == lines.length) {
        return lines;
      }

      // resize array to appropriate amount for these lines
      String output[] = new String[lineCount];
      System.arraycopy(lines, 0, output, 0, lineCount);
      return output;

    } catch (IOException e) {
      e.printStackTrace();
      //throw new RuntimeException("Error inside loadStrings()");
    }
    return null;
  }



  //////////////////////////////////////////////////////////////

  // FILE OUTPUT


  /**
   * ( begin auto-generated from createOutput.xml )
   *
   * Similar to <b>createInput()</b>, this creates a Java <b>OutputStream</b>
   * for a given filename or path. The file will be created in the sketch
   * folder, or in the same folder as an exported application.
   * <br /><br />
   * If the path does not exist, intermediate folders will be created. If an
   * exception occurs, it will be printed to the console, and <b>null</b>
   * will be returned.
   * <br /><br />
   * This function is a convenience over the Java approach that requires you
   * to 1) create a FileOutputStream object, 2) determine the exact file
   * location, and 3) handle exceptions. Exceptions are handled internally by
   * the function, which is more appropriate for "sketch" projects.
   * <br /><br />
   * If the output filename ends with <b>.gz</b>, the output will be
   * automatically GZIP compressed as it is written.
   *
   * ( end auto-generated )
   * @webref output:files
   * @param filename name of the file to open
   * @see PApplet#createInput(String)
   * @see PApplet#selectOutput(String,String)
   */
  public OutputStream createOutput(String filename) {
    return createOutput(saveFile(filename));
  }

  /**
   * @nowebref
   */
  static public OutputStream createOutput(File file) {
    try {
      createPath(file);  // make sure the path exists
      OutputStream output = new FileOutputStream(file);
      if (file.getName().toLowerCase().endsWith(".gz")) {
        return new BufferedOutputStream(new GZIPOutputStream(output));
      }
      return new BufferedOutputStream(output);

    } catch (IOException e) {
      e.printStackTrace();
    }
    return null;
  }


  /**
   * ( begin auto-generated from saveStream.xml )
   *
   * Save the contents of a stream to a file in the sketch folder. This is
   * basically <b>saveBytes(blah, loadBytes())</b>, but done more efficiently
   * (and with less confusing syntax).<br />
   * <br />
   * When using the <b>targetFile</b> parameter, it writes to a <b>File</b>
   * object for greater control over the file location. (Note that unlike
   * some other functions, this will not automatically compress or uncompress
   * gzip files.)
   *
   * ( end auto-generated )
   *
   * @webref output:files
   * @param target name of the file to write to
   * @param source location to read from (a filename, path, or URL)
   * @see PApplet#createOutput(String)
   */
  public boolean saveStream(String target, String source) {
    return saveStream(saveFile(target), source);
  }

  /**
   * Identical to the other saveStream(), but writes to a File
   * object, for greater control over the file location.
   * <p/>
   * Note that unlike other api methods, this will not automatically
   * compress or uncompress gzip files.
   */
  public boolean saveStream(File target, String source) {
    return saveStream(target, createInputRaw(source));
  }

  /**
   * @nowebref
   */
  public boolean saveStream(String target, InputStream source) {
    return saveStream(saveFile(target), source);
  }

  /**
   * @nowebref
   */
  static public boolean saveStream(File target, InputStream source) {
    File tempFile = null;
    try {
      // make sure that this path actually exists before writing
      createPath(target);
      tempFile = createTempFile(target);
      FileOutputStream targetStream = new FileOutputStream(tempFile);

      saveStream(targetStream, source);
      targetStream.close();
      targetStream = null;

      if (target.exists()) {
        if (!target.delete()) {
          System.err.println("Could not replace " +
                             target.getAbsolutePath() + ".");
        }
      }
      if (!tempFile.renameTo(target)) {
        System.err.println("Could not rename temporary file " +
                           tempFile.getAbsolutePath());
        return false;
      }
      return true;

    } catch (IOException e) {
      if (tempFile != null) {
        tempFile.delete();
      }
      e.printStackTrace();
      return false;
    }
  }

  /**
   * @nowebref
   */
  static public void saveStream(OutputStream target,
                                InputStream source) throws IOException {
    BufferedInputStream bis = new BufferedInputStream(source, 16384);
    BufferedOutputStream bos = new BufferedOutputStream(target);

    byte[] buffer = new byte[8192];
    int bytesRead;
    while ((bytesRead = bis.read(buffer)) != -1) {
      bos.write(buffer, 0, bytesRead);
    }

    bos.flush();
  }


  /**
   * ( begin auto-generated from saveBytes.xml )
   *
   * Opposite of <b>loadBytes()</b>, will write an entire array of bytes to a
   * file. The data is saved in binary format. This file is saved to the
   * sketch's folder, which is opened by selecting "Show sketch folder" from
   * the "Sketch" menu.<br />
   * <br />
   * It is not possible to use saveXxxxx() functions inside a web browser
   * unless the sketch is <a
   * href="http://wiki.processing.org/w/Sign_an_Applet">signed applet</A>. To
   * save a file back to a server, see the <a
   * href="http://wiki.processing.org/w/Saving_files_to_a_web-server">save to
   * web</A> code snippet on the Processing Wiki.
   *
   * ( end auto-generated )
   *
   * @webref output:files
   * @param filename name of the file to write to
   * @param data array of bytes to be written
   * @see PApplet#loadStrings(String)
   * @see PApplet#loadBytes(String)
   * @see PApplet#saveStrings(String, String[])
   */
  public void saveBytes(String filename, byte[] data) {
    saveBytes(saveFile(filename), data);
  }


  /**
   * Creates a temporary file based on the name/extension of another file
   * and in the same parent directory. Ensures that the same extension is used
   * (i.e. so that .gz files are gzip compressed on output) and that it's done
   * from the same directory so that renaming the file later won't cross file
   * system boundaries.
   */
  static private File createTempFile(File file) throws IOException {
    File parentDir = file.getParentFile();
    String name = file.getName();
    String prefix;
    String suffix = null;
    int dot = name.lastIndexOf('.');
    if (dot == -1) {
      prefix = name;
    } else {
      // preserve the extension so that .gz works properly
      prefix = name.substring(0, dot);
      suffix = name.substring(dot);
    }
    // Prefix must be three characters
    if (prefix.length() < 3) {
      prefix += "processing";
    }
    return File.createTempFile(prefix, suffix, parentDir);
  }


  /**
   * @nowebref
   * Saves bytes to a specific File location specified by the user.
   */
  static public void saveBytes(File file, byte[] data) {
    File tempFile = null;
    try {
      tempFile = createTempFile(file);

      OutputStream output = createOutput(tempFile);
      saveBytes(output, data);
      output.close();
      output = null;

      if (file.exists()) {
        if (!file.delete()) {
          System.err.println("Could not replace " + file.getAbsolutePath());
        }
      }

      if (!tempFile.renameTo(file)) {
        System.err.println("Could not rename temporary file " +
                           tempFile.getAbsolutePath());
      }

    } catch (IOException e) {
      System.err.println("error saving bytes to " + file);
      if (tempFile != null) {
        tempFile.delete();
      }
      e.printStackTrace();
    }
  }


  /**
   * @nowebref
   * Spews a buffer of bytes to an OutputStream.
   */
  static public void saveBytes(OutputStream output, byte[] data) {
    try {
      output.write(data);
      output.flush();

    } catch (IOException e) {
      e.printStackTrace();
    }
  }


  //

  /**
   * ( begin auto-generated from saveStrings.xml )
   *
   * Writes an array of strings to a file, one line per string. This file is
   * saved to the sketch's folder, which is opened by selecting "Show sketch
   * folder" from the "Sketch" menu.<br />
   * <br />
   * It is not possible to use saveXxxxx() functions inside a web browser
   * unless the sketch is <a
   * href="http://wiki.processing.org/w/Sign_an_Applet">signed applet</A>. To
   * save a file back to a server, see the <a
   * href="http://wiki.processing.org/w/Saving_files_to_a_web-server">save to
   * web</A> code snippet on the Processing Wiki.<br/>
   * <br/ >
   * Starting with Processing 1.0, all files loaded and saved by the
   * Processing API use UTF-8 encoding. In previous releases, the default
   * encoding for your platform was used, which causes problems when files
   * are moved to other platforms.
   *
   * ( end auto-generated )
   * @webref output:files
   * @param filename filename for output
   * @param data string array to be written
   * @see PApplet#loadStrings(String)
   * @see PApplet#loadBytes(String)
   * @see PApplet#saveBytes(String, byte[])
   */
  public void saveStrings(String filename, String data[]) {
    saveStrings(saveFile(filename), data);
  }


  /**
   * @nowebref
   */
  static public void saveStrings(File file, String data[]) {
    saveStrings(createOutput(file), data);
  }


  /**
   * @nowebref
   */
  static public void saveStrings(OutputStream output, String[] data) {
    PrintWriter writer = createWriter(output);
    for (int i = 0; i < data.length; i++) {
      writer.println(data[i]);
    }
    writer.flush();
    writer.close();
  }


  //////////////////////////////////////////////////////////////


  static protected String calcSketchPath() {
    // try to get the user folder. if running under java web start,
    // this may cause a security exception if the code is not signed.
    // http://processing.org/discourse/yabb_beta/YaBB.cgi?board=Integrate;action=display;num=1159386274
    String folder = null;
    try {
      folder = System.getProperty("user.dir");

      URL jarURL =
          PApplet.class.getProtectionDomain().getCodeSource().getLocation();
      // Decode URL
      String jarPath = jarURL.toURI().getSchemeSpecificPart();

      // Workaround for bug in Java for OS X from Oracle (7u51)
      // https://github.com/processing/processing/issues/2181
      if (platform == MACOSX) {
        if (jarPath.contains("Contents/Java/")) {
          String appPath = jarPath.substring(0, jarPath.indexOf(".app") + 4);
          File containingFolder = new File(appPath).getParentFile();
          folder = containingFolder.getAbsolutePath();
        }
      } else {
        // Working directory may not be set properly, try some options
        // https://github.com/processing/processing/issues/2195
        if (jarPath.contains("/lib/")) {
          // Windows or Linux, back up a directory to get the executable
          folder = new File(jarPath, "../..").getCanonicalPath();
        }
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
    return folder;
  }


  public String sketchPath() {
    if (sketchPath == null) {
      sketchPath = calcSketchPath();
    }
    return sketchPath;
  }


  /**
   * Prepend the sketch folder path to the filename (or path) that is
   * passed in. External libraries should use this function to save to
   * the sketch folder.
   * <p/>
   * Note that when running as an applet inside a web browser,
   * the sketchPath will be set to null, because security restrictions
   * prevent applets from accessing that information.
   * <p/>
   * This will also cause an error if the sketch is not inited properly,
   * meaning that init() was never called on the PApplet when hosted
   * my some other main() or by other code. For proper use of init(),
   * see the examples in the main description text for PApplet.
   */
  public String sketchPath(String where) {
    if (sketchPath() == null) {
      return where;
    }
    // isAbsolute() could throw an access exception, but so will writing
    // to the local disk using the sketch path, so this is safe here.
    // for 0120, added a try/catch anyways.
    try {
      if (new File(where).isAbsolute()) return where;
    } catch (Exception e) { }

    return sketchPath() + File.separator + where;
  }


  public File sketchFile(String where) {
    return new File(sketchPath(where));
  }


  /**
   * Returns a path inside the applet folder to save to. Like sketchPath(),
   * but creates any in-between folders so that things save properly.
   * <p/>
   * All saveXxxx() functions use the path to the sketch folder, rather than
   * its data folder. Once exported, the data folder will be found inside the
   * jar file of the exported application or applet. In this case, it's not
   * possible to save data into the jar file, because it will often be running
   * from a server, or marked in-use if running from a local file system.
   * With this in mind, saving to the data path doesn't make sense anyway.
   * If you know you're running locally, and want to save to the data folder,
   * use <TT>saveXxxx("data/blah.dat")</TT>.
   */
  public String savePath(String where) {
    if (where == null) return null;
    String filename = sketchPath(where);
    createPath(filename);
    return filename;
  }


  /**
   * Identical to savePath(), but returns a File object.
   */
  public File saveFile(String where) {
    return new File(savePath(where));
  }


  static File desktopFolder;

  /** Not a supported function. For testing use only. */
  static public File desktopFile(String what) {
    if (desktopFolder == null) {
      // Should work on Linux and OS X (on OS X, even with the localized version).
      desktopFolder = new File(System.getProperty("user.home"), "Desktop");
      if (!desktopFolder.exists()) {
        if (platform == WINDOWS) {
          FileSystemView filesys = FileSystemView.getFileSystemView();
          desktopFolder = filesys.getHomeDirectory();
        } else {
          throw new UnsupportedOperationException("Could not find a suitable desktop foldder");
        }
      }
    }
    return new File(desktopFolder, what);
  }


  /** Not a supported function. For testing use only. */
  static public String desktopPath(String what) {
    return desktopFile(what).getAbsolutePath();
  }


  /**
   * <b>This function almost certainly does not do the thing you want it to.</b>
   * The data path is handled differently on each platform, and should not be
   * considered a location to write files. It should also not be assumed that
   * this location can be read from or listed. This function is used internally
   * as a possible location for reading files. It's still "public" as a
   * holdover from earlier code.
   * <p>
   * Libraries should use createInput() to get an InputStream or createOutput()
   * to get an OutputStream. sketchPath() can be used to get a location
   * relative to the sketch. Again, <b>do not</b> use this to get relative
   * locations of files. You'll be disappointed when your app runs on different
   * platforms.
   */
  public String dataPath(String where) {
    return dataFile(where).getAbsolutePath();
  }


  /**
   * Return a full path to an item in the data folder as a File object.
   * See the dataPath() method for more information.
   */
  public File dataFile(String where) {
    // isAbsolute() could throw an access exception, but so will writing
    // to the local disk using the sketch path, so this is safe here.
    File why = new File(where);
    if (why.isAbsolute()) return why;

    URL jarURL = getClass().getProtectionDomain().getCodeSource().getLocation();
    // Decode URL
    String jarPath;
    try {
      jarPath = jarURL.toURI().getPath();
    } catch (URISyntaxException e) {
      e.printStackTrace();
      return null;
    }
    if (jarPath.contains("Contents/Java/")) {
      File containingFolder = new File(jarPath).getParentFile();
      File dataFolder = new File(containingFolder, "data");
      return new File(dataFolder, where);
    }
    // Windows, Linux, or when not using a Mac OS X .app file
    File workingDirItem =
      new File(sketchPath + File.separator + "data" + File.separator + where);
//    if (workingDirItem.exists()) {
    return workingDirItem;
//    }
//    // In some cases, the current working directory won't be set properly.
  }


  /**
   * On Windows and Linux, this is simply the data folder. On Mac OS X, this is
   * the path to the data folder buried inside Contents/Java
   */
//  public File inputFile(String where) {
//  }


//  public String inputPath(String where) {
//  }


  /**
   * Takes a path and creates any in-between folders if they don't
   * already exist. Useful when trying to save to a subfolder that
   * may not actually exist.
   */
  static public void createPath(String path) {
    createPath(new File(path));
  }


  static public void createPath(File file) {
    try {
      String parent = file.getParent();
      if (parent != null) {
        File unit = new File(parent);
        if (!unit.exists()) unit.mkdirs();
      }
    } catch (SecurityException se) {
      System.err.println("You don't have permissions to create " +
                         file.getAbsolutePath());
    }
  }


  static public String getExtension(String filename) {
    String extension;

    String lower = filename.toLowerCase();
    int dot = filename.lastIndexOf('.');
    if (dot == -1) {
      return "";  // no extension found
    }
    extension = lower.substring(dot + 1);

    // check for, and strip any parameters on the url, i.e.
    // filename.jpg?blah=blah&something=that
    int question = extension.indexOf('?');
    if (question != -1) {
      extension = extension.substring(0, question);
    }

    return extension;
  }


  //////////////////////////////////////////////////////////////

  // URL ENCODING


  static public String urlEncode(String str) {
    try {
      return URLEncoder.encode(str, "UTF-8");
    } catch (UnsupportedEncodingException e) {  // oh c'mon
      return null;
    }
  }


  // DO NOT use for file paths, URLDecoder can't handle RFC2396
  // "The recommended way to manage the encoding and decoding of
  // URLs is to use URI, and to convert between these two classes
  // using toURI() and URI.toURL()."
  // https://docs.oracle.com/javase/8/docs/api/java/net/URL.html
  static public String urlDecode(String str) {
    try {
      return URLDecoder.decode(str, "UTF-8");
    } catch (UnsupportedEncodingException e) {  // safe per the JDK source
      return null;
    }
  }



  //////////////////////////////////////////////////////////////

  // SORT


  /**
   * ( begin auto-generated from sort.xml )
   *
   * Sorts an array of numbers from smallest to largest and puts an array of
   * words in alphabetical order. The original array is not modified, a
   * re-ordered array is returned. The <b>count</b> parameter states the
   * number of elements to sort. For example if there are 12 elements in an
   * array and if count is the value 5, only the first five elements on the
   * array will be sorted. <!--As of release 0126, the alphabetical ordering
   * is case insensitive.-->
   *
   * ( end auto-generated )
   * @webref data:array_functions
   * @param list array to sort
   * @see PApplet#reverse(boolean[])
   */
  static public byte[] sort(byte list[]) {
    return sort(list, list.length);
  }

  /**
        * @param count number of elements to sort, starting from 0
   */
  static public byte[] sort(byte[] list, int count) {
    byte[] outgoing = new byte[list.length];
    System.arraycopy(list, 0, outgoing, 0, list.length);
    Arrays.sort(outgoing, 0, count);
    return outgoing;
  }

  static public char[] sort(char list[]) {
    return sort(list, list.length);
  }

  static public char[] sort(char[] list, int count) {
    char[] outgoing = new char[list.length];
    System.arraycopy(list, 0, outgoing, 0, list.length);
    Arrays.sort(outgoing, 0, count);
    return outgoing;
  }

  static public int[] sort(int list[]) {
    return sort(list, list.length);
  }

  static public int[] sort(int[] list, int count) {
    int[] outgoing = new int[list.length];
    System.arraycopy(list, 0, outgoing, 0, list.length);
    Arrays.sort(outgoing, 0, count);
    return outgoing;
  }

  static public float[] sort(float list[]) {
    return sort(list, list.length);
  }

  static public float[] sort(float[] list, int count) {
    float[] outgoing = new float[list.length];
    System.arraycopy(list, 0, outgoing, 0, list.length);
    Arrays.sort(outgoing, 0, count);
    return outgoing;
  }

  static public String[] sort(String list[]) {
    return sort(list, list.length);
  }

  static public String[] sort(String[] list, int count) {
    String[] outgoing = new String[list.length];
    System.arraycopy(list, 0, outgoing, 0, list.length);
    Arrays.sort(outgoing, 0, count);
    return outgoing;
  }



  //////////////////////////////////////////////////////////////

  // ARRAY UTILITIES


  /**
   * ( begin auto-generated from arrayCopy.xml )
   *
   * Copies an array (or part of an array) to another array. The <b>src</b>
   * array is copied to the <b>dst</b> array, beginning at the position
   * specified by <b>srcPos</b> and into the position specified by
   * <b>dstPos</b>. The number of elements to copy is determined by
   * <b>length</b>. The simplified version with two arguments copies an
   * entire array to another of the same size. It is equivalent to
   * "arrayCopy(src, 0, dst, 0, src.length)". This function is far more
   * efficient for copying array data than iterating through a <b>for</b> and
   * copying each element.
   *
   * ( end auto-generated )
   * @webref data:array_functions
   * @param src the source array
   * @param srcPosition starting position in the source array
   * @param dst the destination array of the same data type as the source array
   * @param dstPosition starting position in the destination array
   * @param length number of array elements to be copied
   * @see PApplet#concat(boolean[], boolean[])
   */
  static public void arrayCopy(Object src, int srcPosition,
                               Object dst, int dstPosition,
                               int length) {
    System.arraycopy(src, srcPosition, dst, dstPosition, length);
  }

  /**
   * Convenience method for arraycopy().
   * Identical to <CODE>arraycopy(src, 0, dst, 0, length);</CODE>
   */
  static public void arrayCopy(Object src, Object dst, int length) {
    System.arraycopy(src, 0, dst, 0, length);
  }

  /**
   * Shortcut to copy the entire contents of
   * the source into the destination array.
   * Identical to <CODE>arraycopy(src, 0, dst, 0, src.length);</CODE>
   */
  static public void arrayCopy(Object src, Object dst) {
    System.arraycopy(src, 0, dst, 0, Array.getLength(src));
  }

  //
  /**
   * @deprecated Use arrayCopy() instead.
   */
  static public void arraycopy(Object src, int srcPosition,
                               Object dst, int dstPosition,
                               int length) {
    System.arraycopy(src, srcPosition, dst, dstPosition, length);
  }

  /**
   * @deprecated Use arrayCopy() instead.
   */
  static public void arraycopy(Object src, Object dst, int length) {
    System.arraycopy(src, 0, dst, 0, length);
  }

  /**
   * @deprecated Use arrayCopy() instead.
   */
  static public void arraycopy(Object src, Object dst) {
    System.arraycopy(src, 0, dst, 0, Array.getLength(src));
  }

  /**
   * ( begin auto-generated from expand.xml )
   *
   * Increases the size of an array. By default, this function doubles the
   * size of the array, but the optional <b>newSize</b> parameter provides
   * precise control over the increase in size.
   * <br/> <br/>
   * When using an array of objects, the data returned from the function must
   * be cast to the object array's data type. For example: <em>SomeClass[]
   * items = (SomeClass[]) expand(originalArray)</em>.
   *
   * ( end auto-generated )
   *
   * @webref data:array_functions
   * @param list the array to expand
   * @see PApplet#shorten(boolean[])
   */
  static public boolean[] expand(boolean list[]) {
    return expand(list, list.length > 0 ? list.length << 1 : 1);
  }

  /**
   * @param newSize new size for the array
   */
  static public boolean[] expand(boolean list[], int newSize) {
    boolean temp[] = new boolean[newSize];
    System.arraycopy(list, 0, temp, 0, Math.min(newSize, list.length));
    return temp;
  }

  static public byte[] expand(byte list[]) {
    return expand(list, list.length > 0 ? list.length << 1 : 1);
  }

  static public byte[] expand(byte list[], int newSize) {
    byte temp[] = new byte[newSize];
    System.arraycopy(list, 0, temp, 0, Math.min(newSize, list.length));
    return temp;
  }

  static public char[] expand(char list[]) {
    return expand(list, list.length > 0 ? list.length << 1 : 1);
  }

  static public char[] expand(char list[], int newSize) {
    char temp[] = new char[newSize];
    System.arraycopy(list, 0, temp, 0, Math.min(newSize, list.length));
    return temp;
  }

  static public int[] expand(int list[]) {
    return expand(list, list.length > 0 ? list.length << 1 : 1);
  }

  static public int[] expand(int list[], int newSize) {
    int temp[] = new int[newSize];
    System.arraycopy(list, 0, temp, 0, Math.min(newSize, list.length));
    return temp;
  }

  static public long[] expand(long list[]) {
    return expand(list, list.length > 0 ? list.length << 1 : 1);
  }

  static public long[] expand(long list[], int newSize) {
    long temp[] = new long[newSize];
    System.arraycopy(list, 0, temp, 0, Math.min(newSize, list.length));
    return temp;
  }

  static public float[] expand(float list[]) {
    return expand(list, list.length > 0 ? list.length << 1 : 1);
  }

  static public float[] expand(float list[], int newSize) {
    float temp[] = new float[newSize];
    System.arraycopy(list, 0, temp, 0, Math.min(newSize, list.length));
    return temp;
  }

  static public double[] expand(double list[]) {
    return expand(list, list.length > 0 ? list.length << 1 : 1);
  }

  static public double[] expand(double list[], int newSize) {
    double temp[] = new double[newSize];
    System.arraycopy(list, 0, temp, 0, Math.min(newSize, list.length));
    return temp;
  }

  static public String[] expand(String list[]) {
    return expand(list, list.length > 0 ? list.length << 1 : 1);
  }

  static public String[] expand(String list[], int newSize) {
    String temp[] = new String[newSize];
    // in case the new size is smaller than list.length
    System.arraycopy(list, 0, temp, 0, Math.min(newSize, list.length));
    return temp;
  }

 /**
  * @nowebref
  */
  static public Object expand(Object array) {
    int len = Array.getLength(array);
    return expand(array, len > 0 ? len << 1 : 1);
  }

  static public Object expand(Object list, int newSize) {
    Class<?> type = list.getClass().getComponentType();
    Object temp = Array.newInstance(type, newSize);
    System.arraycopy(list, 0, temp, 0,
                     Math.min(Array.getLength(list), newSize));
    return temp;
  }

  // contract() has been removed in revision 0124, use subset() instead.
  // (expand() is also functionally equivalent)

  /**
   * ( begin auto-generated from append.xml )
   *
   * Expands an array by one element and adds data to the new position. The
   * datatype of the <b>element</b> parameter must be the same as the
   * datatype of the array.
   * <br/> <br/>
   * When using an array of objects, the data returned from the function must
   * be cast to the object array's data type. For example: <em>SomeClass[]
   * items = (SomeClass[]) append(originalArray, element)</em>.
   *
   * ( end auto-generated )
   *
   * @webref data:array_functions
   * @param array array to append
   * @param value new data for the array
   * @see PApplet#shorten(boolean[])
   * @see PApplet#expand(boolean[])
   */
  static public byte[] append(byte array[], byte value) {
    array = expand(array, array.length + 1);
    array[array.length-1] = value;
    return array;
  }

  static public char[] append(char array[], char value) {
    array = expand(array, array.length + 1);
    array[array.length-1] = value;
    return array;
  }

  static public int[] append(int array[], int value) {
    array = expand(array, array.length + 1);
    array[array.length-1] = value;
    return array;
  }

  static public float[] append(float array[], float value) {
    array = expand(array, array.length + 1);
    array[array.length-1] = value;
    return array;
  }

  static public String[] append(String array[], String value) {
    array = expand(array, array.length + 1);
    array[array.length-1] = value;
    return array;
  }

  static public Object append(Object array, Object value) {
    int length = Array.getLength(array);
    array = expand(array, length + 1);
    Array.set(array, length, value);
    return array;
  }


 /**
   * ( begin auto-generated from shorten.xml )
   *
   * Decreases an array by one element and returns the shortened array.
   * <br/> <br/>
   * When using an array of objects, the data returned from the function must
   * be cast to the object array's data type. For example: <em>SomeClass[]
   * items = (SomeClass[]) shorten(originalArray)</em>.
   *
   * ( end auto-generated )
   *
   * @webref data:array_functions
   * @param list array to shorten
   * @see PApplet#append(byte[], byte)
   * @see PApplet#expand(boolean[])
   */
  static public boolean[] shorten(boolean list[]) {
    return subset(list, 0, list.length-1);
  }

  static public byte[] shorten(byte list[]) {
    return subset(list, 0, list.length-1);
  }

  static public char[] shorten(char list[]) {
    return subset(list, 0, list.length-1);
  }

  static public int[] shorten(int list[]) {
    return subset(list, 0, list.length-1);
  }

  static public float[] shorten(float list[]) {
    return subset(list, 0, list.length-1);
  }

  static public String[] shorten(String list[]) {
    return subset(list, 0, list.length-1);
  }

  static public Object shorten(Object list) {
    int length = Array.getLength(list);
    return subset(list, 0, length - 1);
  }


  /**
   * ( begin auto-generated from splice.xml )
   *
   * Inserts a value or array of values into an existing array. The first two
   * parameters must be of the same datatype. The <b>array</b> parameter
   * defines the array which will be modified and the second parameter
   * defines the data which will be inserted.
   * <br/> <br/>
   * When using an array of objects, the data returned from the function must
   * be cast to the object array's data type. For example: <em>SomeClass[]
   * items = (SomeClass[]) splice(array1, array2, index)</em>.
   *
   * ( end auto-generated )
   * @webref data:array_functions
   * @param list array to splice into
   * @param value value to be spliced in
   * @param index position in the array from which to insert data
   * @see PApplet#concat(boolean[], boolean[])
   * @see PApplet#subset(boolean[], int, int)
   */
  static final public boolean[] splice(boolean list[],
                                       boolean value, int index) {
    boolean outgoing[] = new boolean[list.length + 1];
    System.arraycopy(list, 0, outgoing, 0, index);
    outgoing[index] = value;
    System.arraycopy(list, index, outgoing, index + 1,
                     list.length - index);
    return outgoing;
  }

  static final public boolean[] splice(boolean list[],
                                       boolean value[], int index) {
    boolean outgoing[] = new boolean[list.length + value.length];
    System.arraycopy(list, 0, outgoing, 0, index);
    System.arraycopy(value, 0, outgoing, index, value.length);
    System.arraycopy(list, index, outgoing, index + value.length,
                     list.length - index);
    return outgoing;
  }

  static final public byte[] splice(byte list[],
                                    byte value, int index) {
    byte outgoing[] = new byte[list.length + 1];
    System.arraycopy(list, 0, outgoing, 0, index);
    outgoing[index] = value;
    System.arraycopy(list, index, outgoing, index + 1,
                     list.length - index);
    return outgoing;
  }

  static final public byte[] splice(byte list[],
                                    byte value[], int index) {
    byte outgoing[] = new byte[list.length + value.length];
    System.arraycopy(list, 0, outgoing, 0, index);
    System.arraycopy(value, 0, outgoing, index, value.length);
    System.arraycopy(list, index, outgoing, index + value.length,
                     list.length - index);
    return outgoing;
  }


  static final public char[] splice(char list[],
                                    char value, int index) {
    char outgoing[] = new char[list.length + 1];
    System.arraycopy(list, 0, outgoing, 0, index);
    outgoing[index] = value;
    System.arraycopy(list, index, outgoing, index + 1,
                     list.length - index);
    return outgoing;
  }

  static final public char[] splice(char list[],
                                    char value[], int index) {
    char outgoing[] = new char[list.length + value.length];
    System.arraycopy(list, 0, outgoing, 0, index);
    System.arraycopy(value, 0, outgoing, index, value.length);
    System.arraycopy(list, index, outgoing, index + value.length,
                     list.length - index);
    return outgoing;
  }

  static final public int[] splice(int list[],
                                   int value, int index) {
    int outgoing[] = new int[list.length + 1];
    System.arraycopy(list, 0, outgoing, 0, index);
    outgoing[index] = value;
    System.arraycopy(list, index, outgoing, index + 1,
                     list.length - index);
    return outgoing;
  }

  static final public int[] splice(int list[],
                                   int value[], int index) {
    int outgoing[] = new int[list.length + value.length];
    System.arraycopy(list, 0, outgoing, 0, index);
    System.arraycopy(value, 0, outgoing, index, value.length);
    System.arraycopy(list, index, outgoing, index + value.length,
                     list.length - index);
    return outgoing;
  }

  static final public float[] splice(float list[],
                                     float value, int index) {
    float outgoing[] = new float[list.length + 1];
    System.arraycopy(list, 0, outgoing, 0, index);
    outgoing[index] = value;
    System.arraycopy(list, index, outgoing, index + 1,
                     list.length - index);
    return outgoing;
  }

  static final public float[] splice(float list[],
                                     float value[], int index) {
    float outgoing[] = new float[list.length + value.length];
    System.arraycopy(list, 0, outgoing, 0, index);
    System.arraycopy(value, 0, outgoing, index, value.length);
    System.arraycopy(list, index, outgoing, index + value.length,
                     list.length - index);
    return outgoing;
  }

  static final public String[] splice(String list[],
                                      String value, int index) {
    String outgoing[] = new String[list.length + 1];
    System.arraycopy(list, 0, outgoing, 0, index);
    outgoing[index] = value;
    System.arraycopy(list, index, outgoing, index + 1,
                     list.length - index);
    return outgoing;
  }

  static final public String[] splice(String list[],
                                      String value[], int index) {
    String outgoing[] = new String[list.length + value.length];
    System.arraycopy(list, 0, outgoing, 0, index);
    System.arraycopy(value, 0, outgoing, index, value.length);
    System.arraycopy(list, index, outgoing, index + value.length,
                     list.length - index);
    return outgoing;
  }

  static final public Object splice(Object list, Object value, int index) {
    Class<?> type = list.getClass().getComponentType();
    Object outgoing = null;
    int length = Array.getLength(list);

    // check whether item being spliced in is an array
    if (value.getClass().getName().charAt(0) == '[') {
      int vlength = Array.getLength(value);
      outgoing = Array.newInstance(type, length + vlength);
      System.arraycopy(list, 0, outgoing, 0, index);
      System.arraycopy(value, 0, outgoing, index, vlength);
      System.arraycopy(list, index, outgoing, index + vlength, length - index);

    } else {
      outgoing = Array.newInstance(type, length + 1);
      System.arraycopy(list, 0, outgoing, 0, index);
      Array.set(outgoing, index, value);
      System.arraycopy(list, index, outgoing, index + 1, length - index);
    }
    return outgoing;
  }


  static public boolean[] subset(boolean[] list, int start) {
    return subset(list, start, list.length - start);
  }


 /**
   * ( begin auto-generated from subset.xml )
   *
   * Extracts an array of elements from an existing array. The <b>array</b>
   * parameter defines the array from which the elements will be copied and
   * the <b>offset</b> and <b>length</b> parameters determine which elements
   * to extract. If no <b>length</b> is given, elements will be extracted
   * from the <b>offset</b> to the end of the array. When specifying the
   * <b>offset</b> remember the first array element is 0. This function does
   * not change the source array.
   * <br/> <br/>
   * When using an array of objects, the data returned from the function must
   * be cast to the object array's data type. For example: <em>SomeClass[]
   * items = (SomeClass[]) subset(originalArray, 0, 4)</em>.
   *
   * ( end auto-generated )
  * @webref data:array_functions
  * @param list array to extract from
  * @param start position to begin
  * @param count number of values to extract
  * @see PApplet#splice(boolean[], boolean, int)
  */
  static public boolean[] subset(boolean[] list, int start, int count) {
    boolean[] output = new boolean[count];
    System.arraycopy(list, start, output, 0, count);
    return output;
  }


  static public byte[] subset(byte[] list, int start) {
    return subset(list, start, list.length - start);
  }


  static public byte[] subset(byte[] list, int start, int count) {
    byte[] output = new byte[count];
    System.arraycopy(list, start, output, 0, count);
    return output;
  }


  static public char[] subset(char[] list, int start) {
    return subset(list, start, list.length - start);
  }


  static public char[] subset(char[] list, int start, int count) {
    char[] output = new char[count];
    System.arraycopy(list, start, output, 0, count);
    return output;
  }


  static public int[] subset(int[] list, int start) {
    return subset(list, start, list.length - start);
  }


  static public int[] subset(int[] list, int start, int count) {
    int[] output = new int[count];
    System.arraycopy(list, start, output, 0, count);
    return output;
  }


  static public long[] subset(long[] list, int start) {
    return subset(list, start, list.length - start);
  }


  static public long[] subset(long[] list, int start, int count) {
    long[] output = new long[count];
    System.arraycopy(list, start, output, 0, count);
    return output;
  }


  static public float[] subset(float[] list, int start) {
    return subset(list, start, list.length - start);
  }


  static public float[] subset(float[] list, int start, int count) {
    float[] output = new float[count];
    System.arraycopy(list, start, output, 0, count);
    return output;
  }


  static public double[] subset(double[] list, int start) {
    return subset(list, start, list.length - start);
  }


  static public double[] subset(double[] list, int start, int count) {
    double[] output = new double[count];
    System.arraycopy(list, start, output, 0, count);
    return output;
  }


  static public String[] subset(String[] list, int start) {
    return subset(list, start, list.length - start);
  }


  static public String[] subset(String[] list, int start, int count) {
    String[] output = new String[count];
    System.arraycopy(list, start, output, 0, count);
    return output;
  }


  static public Object subset(Object list, int start) {
    int length = Array.getLength(list);
    return subset(list, start, length - start);
  }


  static public Object subset(Object list, int start, int count) {
    Class<?> type = list.getClass().getComponentType();
    Object outgoing = Array.newInstance(type, count);
    System.arraycopy(list, start, outgoing, 0, count);
    return outgoing;
  }


 /**
   * ( begin auto-generated from concat.xml )
   *
   * Concatenates two arrays. For example, concatenating the array { 1, 2, 3
   * } and the array { 4, 5, 6 } yields { 1, 2, 3, 4, 5, 6 }. Both parameters
   * must be arrays of the same datatype.
   * <br/> <br/>
   * When using an array of objects, the data returned from the function must
   * be cast to the object array's data type. For example: <em>SomeClass[]
   * items = (SomeClass[]) concat(array1, array2)</em>.
   *
   * ( end auto-generated )
  * @webref data:array_functions
  * @param a first array to concatenate
  * @param b second array to concatenate
  * @see PApplet#splice(boolean[], boolean, int)
  * @see PApplet#arrayCopy(Object, int, Object, int, int)
  */
  static public boolean[] concat(boolean a[], boolean b[]) {
    boolean c[] = new boolean[a.length + b.length];
    System.arraycopy(a, 0, c, 0, a.length);
    System.arraycopy(b, 0, c, a.length, b.length);
    return c;
  }

  static public byte[] concat(byte a[], byte b[]) {
    byte c[] = new byte[a.length + b.length];
    System.arraycopy(a, 0, c, 0, a.length);
    System.arraycopy(b, 0, c, a.length, b.length);
    return c;
  }

  static public char[] concat(char a[], char b[]) {
    char c[] = new char[a.length + b.length];
    System.arraycopy(a, 0, c, 0, a.length);
    System.arraycopy(b, 0, c, a.length, b.length);
    return c;
  }

  static public int[] concat(int a[], int b[]) {
    int c[] = new int[a.length + b.length];
    System.arraycopy(a, 0, c, 0, a.length);
    System.arraycopy(b, 0, c, a.length, b.length);
    return c;
  }

  static public float[] concat(float a[], float b[]) {
    float c[] = new float[a.length + b.length];
    System.arraycopy(a, 0, c, 0, a.length);
    System.arraycopy(b, 0, c, a.length, b.length);
    return c;
  }

  static public String[] concat(String a[], String b[]) {
    String c[] = new String[a.length + b.length];
    System.arraycopy(a, 0, c, 0, a.length);
    System.arraycopy(b, 0, c, a.length, b.length);
    return c;
  }

  static public Object concat(Object a, Object b) {
    Class<?> type = a.getClass().getComponentType();
    int alength = Array.getLength(a);
    int blength = Array.getLength(b);
    Object outgoing = Array.newInstance(type, alength + blength);
    System.arraycopy(a, 0, outgoing, 0, alength);
    System.arraycopy(b, 0, outgoing, alength, blength);
    return outgoing;
  }

  //


 /**
   * ( begin auto-generated from reverse.xml )
   *
   * Reverses the order of an array.
   *
   * ( end auto-generated )
  * @webref data:array_functions
  * @param list booleans[], bytes[], chars[], ints[], floats[], or Strings[]
  * @see PApplet#sort(String[], int)
  */
  static public boolean[] reverse(boolean list[]) {
    boolean outgoing[] = new boolean[list.length];
    int length1 = list.length - 1;
    for (int i = 0; i < list.length; i++) {
      outgoing[i] = list[length1 - i];
    }
    return outgoing;
  }

  static public byte[] reverse(byte list[]) {
    byte outgoing[] = new byte[list.length];
    int length1 = list.length - 1;
    for (int i = 0; i < list.length; i++) {
      outgoing[i] = list[length1 - i];
    }
    return outgoing;
  }

  static public char[] reverse(char list[]) {
    char outgoing[] = new char[list.length];
    int length1 = list.length - 1;
    for (int i = 0; i < list.length; i++) {
      outgoing[i] = list[length1 - i];
    }
    return outgoing;
  }

  static public int[] reverse(int list[]) {
    int outgoing[] = new int[list.length];
    int length1 = list.length - 1;
    for (int i = 0; i < list.length; i++) {
      outgoing[i] = list[length1 - i];
    }
    return outgoing;
  }

  static public float[] reverse(float list[]) {
    float outgoing[] = new float[list.length];
    int length1 = list.length - 1;
    for (int i = 0; i < list.length; i++) {
      outgoing[i] = list[length1 - i];
    }
    return outgoing;
  }

  static public String[] reverse(String list[]) {
    String outgoing[] = new String[list.length];
    int length1 = list.length - 1;
    for (int i = 0; i < list.length; i++) {
      outgoing[i] = list[length1 - i];
    }
    return outgoing;
  }

  static public Object reverse(Object list) {
    Class<?> type = list.getClass().getComponentType();
    int length = Array.getLength(list);
    Object outgoing = Array.newInstance(type, length);
    for (int i = 0; i < length; i++) {
      Array.set(outgoing, i, Array.get(list, (length - 1) - i));
    }
    return outgoing;
  }



  //////////////////////////////////////////////////////////////

  // STRINGS


  /**
   * ( begin auto-generated from trim.xml )
   *
   * Removes whitespace characters from the beginning and end of a String. In
   * addition to standard whitespace characters such as space, carriage
   * return, and tab, this function also removes the Unicode "nbsp" character.
   *
   * ( end auto-generated )
   * @webref data:string_functions
   * @param str any string
   * @see PApplet#split(String, String)
   * @see PApplet#join(String[], char)
   */
  static public String trim(String str) {
    if (str == null) {
      return null;
    }
    return str.replace('\u00A0', ' ').trim();
  }


 /**
  * @param array a String array
  */
  static public String[] trim(String[] array) {
    if (array == null) {
      return null;
    }
    String[] outgoing = new String[array.length];
    for (int i = 0; i < array.length; i++) {
      if (array[i] != null) {
        outgoing[i] = trim(array[i]);
      }
    }
    return outgoing;
  }


  /**
   * ( begin auto-generated from join.xml )
   *
   * Combines an array of Strings into one String, each separated by the
   * character(s) used for the <b>separator</b> parameter. To join arrays of
   * ints or floats, it's necessary to first convert them to strings using
   * <b>nf()</b> or <b>nfs()</b>.
   *
   * ( end auto-generated )
   * @webref data:string_functions
   * @param list array of Strings
   * @param separator char or String to be placed between each item
   * @see PApplet#split(String, String)
   * @see PApplet#trim(String)
   * @see PApplet#nf(float, int, int)
   * @see PApplet#nfs(float, int, int)
   */
  static public String join(String[] list, char separator) {
    return join(list, String.valueOf(separator));
  }


  static public String join(String[] list, String separator) {
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < list.length; i++) {
      if (i != 0) sb.append(separator);
      sb.append(list[i]);
    }
    return sb.toString();
  }


  static public String[] splitTokens(String value) {
    return splitTokens(value, WHITESPACE);
  }


  /**
   * ( begin auto-generated from splitTokens.xml )
   *
   * The splitTokens() function splits a String at one or many character
   * "tokens." The <b>tokens</b> parameter specifies the character or
   * characters to be used as a boundary.
   * <br/> <br/>
   * If no <b>tokens</b> character is specified, any whitespace character is
   * used to split. Whitespace characters include tab (\\t), line feed (\\n),
   * carriage return (\\r), form feed (\\f), and space. To convert a String
   * to an array of integers or floats, use the datatype conversion functions
   * <b>int()</b> and <b>float()</b> to convert the array of Strings.
   *
   * ( end auto-generated )
   * @webref data:string_functions
   * @param value the String to be split
   * @param delim list of individual characters that will be used as separators
   * @see PApplet#split(String, String)
   * @see PApplet#join(String[], String)
   * @see PApplet#trim(String)
   */
  static public String[] splitTokens(String value, String delim) {
    StringTokenizer toker = new StringTokenizer(value, delim);
    String pieces[] = new String[toker.countTokens()];

    int index = 0;
    while (toker.hasMoreTokens()) {
      pieces[index++] = toker.nextToken();
    }
    return pieces;
  }


  /**
   * ( begin auto-generated from split.xml )
   *
   * The split() function breaks a string into pieces using a character or
   * string as the divider. The <b>delim</b> parameter specifies the
   * character or characters that mark the boundaries between each piece. A
   * String[] array is returned that contains each of the pieces.
   * <br/> <br/>
   * If the result is a set of numbers, you can convert the String[] array to
   * to a float[] or int[] array using the datatype conversion functions
   * <b>int()</b> and <b>float()</b> (see example above).
   * <br/> <br/>
   * The <b>splitTokens()</b> function works in a similar fashion, except
   * that it splits using a range of characters instead of a specific
   * character or sequence.
   * <!-- /><br />
   * This function uses regular expressions to determine how the <b>delim</b>
   * parameter divides the <b>str</b> parameter. Therefore, if you use
   * characters such parentheses and brackets that are used with regular
   * expressions as a part of the <b>delim</b> parameter, you'll need to put
   * two blackslashes (\\\\) in front of the character (see example above).
   * You can read more about <a
   * href="http://en.wikipedia.org/wiki/Regular_expression">regular
   * expressions</a> and <a
   * href="http://en.wikipedia.org/wiki/Escape_character">escape
   * characters</a> on Wikipedia.
   * -->
   *
   * ( end auto-generated )
   * @webref data:string_functions
   * @usage web_application
   * @param value the String to be split
   * @param delim the character or String used to separate the data
   */
  static public String[] split(String value, char delim) {
    // do this so that the exception occurs inside the user's
    // program, rather than appearing to be a bug inside split()
    if (value == null) return null;
    //return split(what, String.valueOf(delim));  // huh

    char chars[] = value.toCharArray();
    int splitCount = 0; //1;
    for (int i = 0; i < chars.length; i++) {
      if (chars[i] == delim) splitCount++;
    }
    // make sure that there is something in the input string
    //if (chars.length > 0) {
      // if the last char is a delimeter, get rid of it..
      //if (chars[chars.length-1] == delim) splitCount--;
      // on second thought, i don't agree with this, will disable
    //}
    if (splitCount == 0) {
      String splits[] = new String[1];
      splits[0] = value;
      return splits;
    }
    //int pieceCount = splitCount + 1;
    String splits[] = new String[splitCount + 1];
    int splitIndex = 0;
    int startIndex = 0;
    for (int i = 0; i < chars.length; i++) {
      if (chars[i] == delim) {
        splits[splitIndex++] =
          new String(chars, startIndex, i-startIndex);
        startIndex = i + 1;
      }
    }
    //if (startIndex != chars.length) {
      splits[splitIndex] =
        new String(chars, startIndex, chars.length-startIndex);
    //}
    return splits;
  }


  static public String[] split(String value, String delim) {
    List<String> items = new ArrayList<>();
    int index;
    int offset = 0;
    while ((index = value.indexOf(delim, offset)) != -1) {
      items.add(value.substring(offset, index));
      offset = index + delim.length();
    }
    items.add(value.substring(offset));
    String[] outgoing = new String[items.size()];
    items.toArray(outgoing);
    return outgoing;
  }


  static protected LinkedHashMap<String, Pattern> matchPatterns;

  static Pattern matchPattern(String regexp) {
    Pattern p = null;
    if (matchPatterns == null) {
      matchPatterns = new LinkedHashMap<String, Pattern>(16, 0.75f, true) {
        @Override
        protected boolean removeEldestEntry(Map.Entry<String, Pattern> eldest) {
          // Limit the number of match patterns at 10 most recently used
          return size() == 10;
        }
      };
    } else {
      p = matchPatterns.get(regexp);
    }
    if (p == null) {
      p = Pattern.compile(regexp, Pattern.MULTILINE | Pattern.DOTALL);
      matchPatterns.put(regexp, p);
    }
    return p;
  }


  /**
   * ( begin auto-generated from match.xml )
   *
   * The match() function is used to apply a regular expression to a piece of
   * text, and return matching groups (elements found inside parentheses) as
   * a String array. No match will return null. If no groups are specified in
   * the regexp, but the sequence matches, an array of length one (with the
   * matched text as the first element of the array) will be returned.<br />
   * <br />
   * To use the function, first check to see if the result is null. If the
   * result is null, then the sequence did not match. If the sequence did
   * match, an array is returned.
   * If there are groups (specified by sets of parentheses) in the regexp,
   * then the contents of each will be returned in the array.
   * Element [0] of a regexp match returns the entire matching string, and
   * the match groups start at element [1] (the first group is [1], the
   * second [2], and so on).<br />
   * <br />
   * The syntax can be found in the reference for Java's <a
   * href="http://download.oracle.com/javase/6/docs/api/">Pattern</a> class.
   * For regular expression syntax, read the <a
   * href="http://download.oracle.com/javase/tutorial/essential/regex/">Java
   * Tutorial</a> on the topic.
   *
   * ( end auto-generated )
   * @webref data:string_functions
   * @param str the String to be searched
   * @param regexp the regexp to be used for matching
   * @see PApplet#matchAll(String, String)
   * @see PApplet#split(String, String)
   * @see PApplet#splitTokens(String, String)
   * @see PApplet#join(String[], String)
   * @see PApplet#trim(String)
   */
  static public String[] match(String str, String regexp) {
    Pattern p = matchPattern(regexp);
    Matcher m = p.matcher(str);
    if (m.find()) {
      int count = m.groupCount() + 1;
      String[] groups = new String[count];
      for (int i = 0; i < count; i++) {
        groups[i] = m.group(i);
      }
      return groups;
    }
    return null;
  }


  /**
   * ( begin auto-generated from matchAll.xml )
   *
   * This function is used to apply a regular expression to a piece of text,
   * and return a list of matching groups (elements found inside parentheses)
   * as a two-dimensional String array. No matches will return null. If no
   * groups are specified in the regexp, but the sequence matches, a two
   * dimensional array is still returned, but the second dimension is only of
   * length one.<br />
   * <br />
   * To use the function, first check to see if the result is null. If the
   * result is null, then the sequence did not match at all. If the sequence
   * did match, a 2D array is returned. If there are groups (specified by
   * sets of parentheses) in the regexp, then the contents of each will be
   * returned in the array.
   * Assuming, a loop with counter variable i, element [i][0] of a regexp
   * match returns the entire matching string, and the match groups start at
   * element [i][1] (the first group is [i][1], the second [i][2], and so
   * on).<br />
   * <br />
   * The syntax can be found in the reference for Java's <a
   * href="http://download.oracle.com/javase/6/docs/api/">Pattern</a> class.
   * For regular expression syntax, read the <a
   * href="http://download.oracle.com/javase/tutorial/essential/regex/">Java
   * Tutorial</a> on the topic.
   *
   * ( end auto-generated )
   * @webref data:string_functions
   * @param str the String to be searched
   * @param regexp the regexp to be used for matching
   * @see PApplet#match(String, String)
   * @see PApplet#split(String, String)
   * @see PApplet#splitTokens(String, String)
   * @see PApplet#join(String[], String)
   * @see PApplet#trim(String)
   */
  static public String[][] matchAll(String str, String regexp) {
    Pattern p = matchPattern(regexp);
    Matcher m = p.matcher(str);
    List<String[]> results = new ArrayList<>();
    int count = m.groupCount() + 1;
    while (m.find()) {
      String[] groups = new String[count];
      for (int i = 0; i < count; i++) {
        groups[i] = m.group(i);
      }
      results.add(groups);
    }
    if (results.isEmpty()) {
      return null;
    }
    String[][] matches = new String[results.size()][count];
    for (int i = 0; i < matches.length; i++) {
      matches[i] = results.get(i);
    }
    return matches;
  }



  //////////////////////////////////////////////////////////////

  // CASTING FUNCTIONS, INSERTED BY PREPROC


  /**
   * Convert a char to a boolean. 'T', 't', and '1' will become the
   * boolean value true, while 'F', 'f', or '0' will become false.
   */
  /*
  static final public boolean parseBoolean(char what) {
    return ((what == 't') || (what == 'T') || (what == '1'));
  }
  */

  /**
   * <p>Convert an integer to a boolean. Because of how Java handles upgrading
   * numbers, this will also cover byte and char (as they will upgrade to
   * an int without any sort of explicit cast).</p>
   * <p>The preprocessor will convert boolean(what) to parseBoolean(what).</p>
   * @return false if 0, true if any other number
   */
  static final public boolean parseBoolean(int what) {
    return (what != 0);
  }

  /*
  // removed because this makes no useful sense
  static final public boolean parseBoolean(float what) {
    return (what != 0);
  }
  */

  /**
   * Convert the string "true" or "false" to a boolean.
   * @return true if 'what' is "true" or "TRUE", false otherwise
   */
  static final public boolean parseBoolean(String what) {
    return Boolean.parseBoolean(what);
  }

  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  /*
  // removed, no need to introduce strange syntax from other languages
  static final public boolean[] parseBoolean(char what[]) {
    boolean outgoing[] = new boolean[what.length];
    for (int i = 0; i < what.length; i++) {
      outgoing[i] =
        ((what[i] == 't') || (what[i] == 'T') || (what[i] == '1'));
    }
    return outgoing;
  }
  */

  /**
   * Convert a byte array to a boolean array. Each element will be
   * evaluated identical to the integer case, where a byte equal
   * to zero will return false, and any other value will return true.
   * @return array of boolean elements
   */
  /*
  static final public boolean[] parseBoolean(byte what[]) {
    boolean outgoing[] = new boolean[what.length];
    for (int i = 0; i < what.length; i++) {
      outgoing[i] = (what[i] != 0);
    }
    return outgoing;
  }
  */

  /**
   * Convert an int array to a boolean array. An int equal
   * to zero will return false, and any other value will return true.
   * @return array of boolean elements
   */
  static final public boolean[] parseBoolean(int what[]) {
    boolean outgoing[] = new boolean[what.length];
    for (int i = 0; i < what.length; i++) {
      outgoing[i] = (what[i] != 0);
    }
    return outgoing;
  }

  /*
  // removed, not necessary... if necessary, convert to int array first
  static final public boolean[] parseBoolean(float what[]) {
    boolean outgoing[] = new boolean[what.length];
    for (int i = 0; i < what.length; i++) {
      outgoing[i] = (what[i] != 0);
    }
    return outgoing;
  }
  */

  static final public boolean[] parseBoolean(String what[]) {
    boolean outgoing[] = new boolean[what.length];
    for (int i = 0; i < what.length; i++) {
      outgoing[i] = Boolean.parseBoolean(what[i]);
    }
    return outgoing;
  }

  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  static final public byte parseByte(boolean what) {
    return what ? (byte)1 : 0;
  }

  static final public byte parseByte(char what) {
    return (byte) what;
  }

  static final public byte parseByte(int what) {
    return (byte) what;
  }

  static final public byte parseByte(float what) {
    return (byte) what;
  }

  /*
  // nixed, no precedent
  static final public byte[] parseByte(String what) {  // note: array[]
    return what.getBytes();
  }
  */

  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  static final public byte[] parseByte(boolean what[]) {
    byte outgoing[] = new byte[what.length];
    for (int i = 0; i < what.length; i++) {
      outgoing[i] = what[i] ? (byte)1 : 0;
    }
    return outgoing;
  }

  static final public byte[] parseByte(char what[]) {
    byte outgoing[] = new byte[what.length];
    for (int i = 0; i < what.length; i++) {
      outgoing[i] = (byte) what[i];
    }
    return outgoing;
  }

  static final public byte[] parseByte(int what[]) {
    byte outgoing[] = new byte[what.length];
    for (int i = 0; i < what.length; i++) {
      outgoing[i] = (byte) what[i];
    }
    return outgoing;
  }

  static final public byte[] parseByte(float what[]) {
    byte outgoing[] = new byte[what.length];
    for (int i = 0; i < what.length; i++) {
      outgoing[i] = (byte) what[i];
    }
    return outgoing;
  }

  /*
  static final public byte[][] parseByte(String what[]) {  // note: array[][]
    byte outgoing[][] = new byte[what.length][];
    for (int i = 0; i < what.length; i++) {
      outgoing[i] = what[i].getBytes();
    }
    return outgoing;
  }
  */

  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  /*
  static final public char parseChar(boolean what) {  // 0/1 or T/F ?
    return what ? 't' : 'f';
  }
  */

  static final public char parseChar(byte what) {
    return (char) (what & 0xff);
  }

  static final public char parseChar(int what) {
    return (char) what;
  }

  /*
  static final public char parseChar(float what) {  // nonsensical
    return (char) what;
  }

  static final public char[] parseChar(String what) {  // note: array[]
    return what.toCharArray();
  }
  */

  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  /*
  static final public char[] parseChar(boolean what[]) {  // 0/1 or T/F ?
    char outgoing[] = new char[what.length];
    for (int i = 0; i < what.length; i++) {
      outgoing[i] = what[i] ? 't' : 'f';
    }
    return outgoing;
  }
  */

  static final public char[] parseChar(byte what[]) {
    char outgoing[] = new char[what.length];
    for (int i = 0; i < what.length; i++) {
      outgoing[i] = (char) (what[i] & 0xff);
    }
    return outgoing;
  }

  static final public char[] parseChar(int what[]) {
    char outgoing[] = new char[what.length];
    for (int i = 0; i < what.length; i++) {
      outgoing[i] = (char) what[i];
    }
    return outgoing;
  }

  /*
  static final public char[] parseChar(float what[]) {  // nonsensical
    char outgoing[] = new char[what.length];
    for (int i = 0; i < what.length; i++) {
      outgoing[i] = (char) what[i];
    }
    return outgoing;
  }

  static final public char[][] parseChar(String what[]) {  // note: array[][]
    char outgoing[][] = new char[what.length][];
    for (int i = 0; i < what.length; i++) {
      outgoing[i] = what[i].toCharArray();
    }
    return outgoing;
  }
  */

  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  static final public int parseInt(boolean what) {
    return what ? 1 : 0;
  }

  /**
   * Note that parseInt() will un-sign a signed byte value.
   */
  static final public int parseInt(byte what) {
    return what & 0xff;
  }

  /**
   * Note that parseInt('5') is unlike String in the sense that it
   * won't return 5, but the ascii value. This is because ((int) someChar)
   * returns the ascii value, and parseInt() is just longhand for the cast.
   */
  static final public int parseInt(char what) {
    return what;
  }

  /**
   * Same as floor(), or an (int) cast.
   */
  static final public int parseInt(float what) {
    return (int) what;
  }

  /**
   * Parse a String into an int value. Returns 0 if the value is bad.
   */
  static final public int parseInt(String what) {
    return parseInt(what, 0);
  }

  /**
   * Parse a String to an int, and provide an alternate value that
   * should be used when the number is invalid.
   */
  static final public int parseInt(String what, int otherwise) {
    try {
      int offset = what.indexOf('.');
      if (offset == -1) {
        return Integer.parseInt(what);
      } else {
        return Integer.parseInt(what.substring(0, offset));
      }
    } catch (NumberFormatException e) { }
    return otherwise;
  }

  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  static final public int[] parseInt(boolean what[]) {
    int list[] = new int[what.length];
    for (int i = 0; i < what.length; i++) {
      list[i] = what[i] ? 1 : 0;
    }
    return list;
  }

  static final public int[] parseInt(byte what[]) {  // note this unsigns
    int list[] = new int[what.length];
    for (int i = 0; i < what.length; i++) {
      list[i] = (what[i] & 0xff);
    }
    return list;
  }

  static final public int[] parseInt(char what[]) {
    int list[] = new int[what.length];
    for (int i = 0; i < what.length; i++) {
      list[i] = what[i];
    }
    return list;
  }

  static public int[] parseInt(float what[]) {
    int inties[] = new int[what.length];
    for (int i = 0; i < what.length; i++) {
      inties[i] = (int)what[i];
    }
    return inties;
  }

  /**
   * Make an array of int elements from an array of String objects.
   * If the String can't be parsed as a number, it will be set to zero.
   *
   * String s[] = { "1", "300", "44" };
   * int numbers[] = parseInt(s);
   *
   * numbers will contain { 1, 300, 44 }
   */
  static public int[] parseInt(String what[]) {
    return parseInt(what, 0);
  }

  /**
   * Make an array of int elements from an array of String objects.
   * If the String can't be parsed as a number, its entry in the
   * array will be set to the value of the "missing" parameter.
   *
   * String s[] = { "1", "300", "apple", "44" };
   * int numbers[] = parseInt(s, 9999);
   *
   * numbers will contain { 1, 300, 9999, 44 }
   */
  static public int[] parseInt(String what[], int missing) {
    int output[] = new int[what.length];
    for (int i = 0; i < what.length; i++) {
      try {
        output[i] = Integer.parseInt(what[i]);
      } catch (NumberFormatException e) {
        output[i] = missing;
      }
    }
    return output;
  }

  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  /*
  static final public float parseFloat(boolean what) {
    return what ? 1 : 0;
  }
  */

  /**
   * Convert an int to a float value. Also handles bytes because of
   * Java's rules for upgrading values.
   */
  static final public float parseFloat(int what) {  // also handles byte
    return what;
  }

  static final public float parseFloat(String what) {
    return parseFloat(what, Float.NaN);
  }

  static final public float parseFloat(String what, float otherwise) {
    try {
      return Float.parseFloat(what);
    } catch (NumberFormatException e) { }

    return otherwise;
  }

  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  /*
  static final public float[] parseFloat(boolean what[]) {
    float floaties[] = new float[what.length];
    for (int i = 0; i < what.length; i++) {
      floaties[i] = what[i] ? 1 : 0;
    }
    return floaties;
  }

  static final public float[] parseFloat(char what[]) {
    float floaties[] = new float[what.length];
    for (int i = 0; i < what.length; i++) {
      floaties[i] = (char) what[i];
    }
    return floaties;
  }
  */

  static final public float[] parseFloat(byte what[]) {
    float floaties[] = new float[what.length];
    for (int i = 0; i < what.length; i++) {
      floaties[i] = what[i];
    }
    return floaties;
  }

  static final public float[] parseFloat(int what[]) {
    float floaties[] = new float[what.length];
    for (int i = 0; i < what.length; i++) {
      floaties[i] = what[i];
    }
    return floaties;
  }

  static final public float[] parseFloat(String what[]) {
    return parseFloat(what, Float.NaN);
  }

  static final public float[] parseFloat(String what[], float missing) {
    float output[] = new float[what.length];
    for (int i = 0; i < what.length; i++) {
      try {
        output[i] = Float.parseFloat(what[i]);
      } catch (NumberFormatException e) {
        output[i] = missing;
      }
    }
    return output;
  }

  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  static final public String str(boolean x) {
    return String.valueOf(x);
  }

  static final public String str(byte x) {
    return String.valueOf(x);
  }

  static final public String str(char x) {
    return String.valueOf(x);
  }

  static final public String str(int x) {
    return String.valueOf(x);
  }

  static final public String str(float x) {
    return String.valueOf(x);
  }

  // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  static final public String[] str(boolean x[]) {
    String s[] = new String[x.length];
    for (int i = 0; i < x.length; i++) s[i] = String.valueOf(x[i]);
    return s;
  }

  static final public String[] str(byte x[]) {
    String s[] = new String[x.length];
    for (int i = 0; i < x.length; i++) s[i] = String.valueOf(x[i]);
    return s;
  }

  static final public String[] str(char x[]) {
    String s[] = new String[x.length];
    for (int i = 0; i < x.length; i++) s[i] = String.valueOf(x[i]);
    return s;
  }

  static final public String[] str(int x[]) {
    String s[] = new String[x.length];
    for (int i = 0; i < x.length; i++) s[i] = String.valueOf(x[i]);
    return s;
  }

  static final public String[] str(float x[]) {
    String s[] = new String[x.length];
    for (int i = 0; i < x.length; i++) s[i] = String.valueOf(x[i]);
    return s;
  }


  //////////////////////////////////////////////////////////////

  // INT NUMBER FORMATTING

  static public String nf(float num) {
    int inum = (int) num;
    if (num == inum) {
      return str(inum);
    }
    return str(num);
  }

  static public String[] nf(float[] nums) {
    String[] outgoing = new String[nums.length];
    for (int i = 0; i < nums.length; i++) {
      outgoing[i] = nf(nums[i]);
    }
    return outgoing;
  }

  /**
   * Integer number formatter.
   */

  static private NumberFormat int_nf;
  static private int int_nf_digits;
  static private boolean int_nf_commas;

  /**
   * ( begin auto-generated from nf.xml )
   *
   * Utility function for formatting numbers into strings. There are two
   * versions, one for formatting floats and one for formatting ints. The
   * values for the <b>digits</b>, <b>left</b>, and <b>right</b> parameters
   * should always be positive integers.<br /><br />As shown in the above
   * example, <b>nf()</b> is used to add zeros to the left and/or right of a
   * number. This is typically for aligning a list of numbers. To
   * <em>remove</em> digits from a floating-point number, use the
   * <b>int()</b>, <b>ceil()</b>, <b>floor()</b>, or <b>round()</b>
   * functions.
   *
   * ( end auto-generated )
   * @webref data:string_functions
   * @param nums the numbers to format
   * @param digits number of digits to pad with zero
   * @see PApplet#nfs(float, int, int)
   * @see PApplet#nfp(float, int, int)
   * @see PApplet#nfc(float, int)
   * @see <a href="https://processing.org/reference/intconvert_.html">int(float)</a>
   */

  static public String[] nf(int nums[], int digits) {
    String formatted[] = new String[nums.length];
    for (int i = 0; i < formatted.length; i++) {
      formatted[i] = nf(nums[i], digits);
    }
    return formatted;
  }

  /**
   * @param num the number to format
   */
  static public String nf(int num, int digits) {
    if ((int_nf != null) &&
        (int_nf_digits == digits) &&
        !int_nf_commas) {
      return int_nf.format(num);
    }

    int_nf = NumberFormat.getInstance();
    int_nf.setGroupingUsed(false); // no commas
    int_nf_commas = false;
    int_nf.setMinimumIntegerDigits(digits);
    int_nf_digits = digits;
    return int_nf.format(num);
  }

  /**
   * ( begin auto-generated from nfc.xml )
   *
   * Utility function for formatting numbers into strings and placing
   * appropriate commas to mark units of 1000. There are two versions, one
   * for formatting ints and one for formatting an array of ints. The value
   * for the <b>digits</b> parameter should always be a positive integer.
   * <br/><br/>
   * For a non-US locale, this will insert periods instead of commas, or
   * whatever is apprioriate for that region.
   *
   * ( end auto-generated )
   * @webref data:string_functions
   * @param nums the numbers to format
   * @see PApplet#nf(float, int, int)
   * @see PApplet#nfp(float, int, int)
   * @see PApplet#nfs(float, int, int)
   */
  static public String[] nfc(int nums[]) {
    String formatted[] = new String[nums.length];
    for (int i = 0; i < formatted.length; i++) {
      formatted[i] = nfc(nums[i]);
    }
    return formatted;
  }


  /**
   * @param num the number to format
   */
  static public String nfc(int num) {
    if ((int_nf != null) &&
        (int_nf_digits == 0) &&
        int_nf_commas) {
      return int_nf.format(num);
    }

    int_nf = NumberFormat.getInstance();
    int_nf.setGroupingUsed(true);
    int_nf_commas = true;
    int_nf.setMinimumIntegerDigits(0);
    int_nf_digits = 0;
    return int_nf.format(num);
  }


  /**
   * number format signed (or space)
   * Formats a number but leaves a blank space in the front
   * when it's positive so that it can be properly aligned with
   * numbers that have a negative sign in front of them.
   */

  /**
   * ( begin auto-generated from nfs.xml )
   *
   * Utility function for formatting numbers into strings. Similar to
   * <b>nf()</b> but leaves a blank space in front of positive numbers so
   * they align with negative numbers in spite of the minus symbol. There are
   * two versions, one for formatting floats and one for formatting ints. The
   * values for the <b>digits</b>, <b>left</b>, and <b>right</b> parameters
   * should always be positive integers.
   *
   * ( end auto-generated )
  * @webref data:string_functions
  * @param num the number to format
  * @param digits number of digits to pad with zeroes
  * @see PApplet#nf(float, int, int)
  * @see PApplet#nfp(float, int, int)
  * @see PApplet#nfc(float, int)
  */
  static public String nfs(int num, int digits) {
    return (num < 0) ? nf(num, digits) : (' ' + nf(num, digits));
  }

  /**
   * @param nums the numbers to format
   */
  static public String[] nfs(int nums[], int digits) {
    String formatted[] = new String[nums.length];
    for (int i = 0; i < formatted.length; i++) {
      formatted[i] = nfs(nums[i], digits);
    }
    return formatted;
  }

  //

  /**
   * number format positive (or plus)
   * Formats a number, always placing a - or + sign
   * in the front when it's negative or positive.
   */
 /**
   * ( begin auto-generated from nfp.xml )
   *
   * Utility function for formatting numbers into strings. Similar to
   * <b>nf()</b> but puts a "+" in front of positive numbers and a "-" in
   * front of negative numbers. There are two versions, one for formatting
   * floats and one for formatting ints. The values for the <b>digits</b>,
   * <b>left</b>, and <b>right</b> parameters should always be positive integers.
   *
   * ( end auto-generated )
  * @webref data:string_functions
  * @param num the number to format
  * @param digits number of digits to pad with zeroes
  * @see PApplet#nf(float, int, int)
  * @see PApplet#nfs(float, int, int)
  * @see PApplet#nfc(float, int)
  */
  static public String nfp(int num, int digits) {
    return (num < 0) ? nf(num, digits) : ('+' + nf(num, digits));
  }
  /**
   * @param nums the numbers to format
   */
  static public String[] nfp(int nums[], int digits) {
    String formatted[] = new String[nums.length];
    for (int i = 0; i < formatted.length; i++) {
      formatted[i] = nfp(nums[i], digits);
    }
    return formatted;
  }



  //////////////////////////////////////////////////////////////

  // FLOAT NUMBER FORMATTING

  static private NumberFormat float_nf;
  static private int float_nf_left, float_nf_right;
  static private boolean float_nf_commas;

  /**
   * @param left number of digits to the left of the decimal point
   * @param right number of digits to the right of the decimal point
   */
  static public String[] nf(float nums[], int left, int right) {
    String formatted[] = new String[nums.length];
    for (int i = 0; i < formatted.length; i++) {
      formatted[i] = nf(nums[i], left, right);
    }
    return formatted;
  }

  static public String nf(float num, int left, int right) {
    if ((float_nf != null) &&
        (float_nf_left == left) &&
        (float_nf_right == right) &&
        !float_nf_commas) {
      return float_nf.format(num);
    }

    float_nf = NumberFormat.getInstance();
    float_nf.setGroupingUsed(false);
    float_nf_commas = false;

    if (left != 0) float_nf.setMinimumIntegerDigits(left);
    if (right != 0) {
      float_nf.setMinimumFractionDigits(right);
      float_nf.setMaximumFractionDigits(right);
    }
    float_nf_left = left;
    float_nf_right = right;
    return float_nf.format(num);
  }

  /**
   * @param right number of digits to the right of the decimal point
  */
  static public String[] nfc(float nums[], int right) {
    String formatted[] = new String[nums.length];
    for (int i = 0; i < formatted.length; i++) {
      formatted[i] = nfc(nums[i], right);
    }
    return formatted;
  }

  static public String nfc(float num, int right) {
    if ((float_nf != null) &&
        (float_nf_left == 0) &&
        (float_nf_right == right) &&
        float_nf_commas) {
      return float_nf.format(num);
    }

    float_nf = NumberFormat.getInstance();
    float_nf.setGroupingUsed(true);
    float_nf_commas = true;

    if (right != 0) {
      float_nf.setMinimumFractionDigits(right);
      float_nf.setMaximumFractionDigits(right);
    }
    float_nf_left = 0;
    float_nf_right = right;
    return float_nf.format(num);
  }


 /**
  * @param left the number of digits to the left of the decimal point
  * @param right the number of digits to the right of the decimal point
  */
  static public String[] nfs(float nums[], int left, int right) {
    String formatted[] = new String[nums.length];
    for (int i = 0; i < formatted.length; i++) {
      formatted[i] = nfs(nums[i], left, right);
    }
    return formatted;
  }

  static public String nfs(float num, int left, int right) {
    return (num < 0) ? nf(num, left, right) :  (' ' + nf(num, left, right));
  }

 /**
  * @param left the number of digits to the left of the decimal point
  * @param right the number of digits to the right of the decimal point
  */
  static public String[] nfp(float nums[], int left, int right) {
    String formatted[] = new String[nums.length];
    for (int i = 0; i < formatted.length; i++) {
      formatted[i] = nfp(nums[i], left, right);
    }
    return formatted;
  }

  static public String nfp(float num, int left, int right) {
    return (num < 0) ? nf(num, left, right) :  ('+' + nf(num, left, right));
  }



  //////////////////////////////////////////////////////////////

  // HEX/BINARY CONVERSION


  /**
   * ( begin auto-generated from hex.xml )
   *
   * Converts a byte, char, int, or color to a String containing the
   * equivalent hexadecimal notation. For example color(0, 102, 153) will
   * convert to the String "FF006699". This function can help make your geeky
   * debugging sessions much happier.
   * <br/> <br/>
   * Note that the maximum number of digits is 8, because an int value can
   * only represent up to 32 bits. Specifying more than eight digits will
   * simply shorten the string to eight anyway.
   *
   * ( end auto-generated )
   * @webref data:conversion
   * @param value the value to convert
   * @see PApplet#unhex(String)
   * @see PApplet#binary(byte)
   * @see PApplet#unbinary(String)
   */
  static final public String hex(byte value) {
    return hex(value, 2);
  }

  static final public String hex(char value) {
    return hex(value, 4);
  }

  static final public String hex(int value) {
    return hex(value, 8);
  }
/**
 * @param digits the number of digits (maximum 8)
 */
  static final public String hex(int value, int digits) {
    String stuff = Integer.toHexString(value).toUpperCase();
    if (digits > 8) {
      digits = 8;
    }

    int length = stuff.length();
    if (length > digits) {
      return stuff.substring(length - digits);

    } else if (length < digits) {
      return "00000000".substring(8 - (digits-length)) + stuff;
    }
    return stuff;
  }

 /**
   * ( begin auto-generated from unhex.xml )
   *
   * Converts a String representation of a hexadecimal number to its
   * equivalent integer value.
   *
   * ( end auto-generated )
   *
   * @webref data:conversion
   * @param value String to convert to an integer
   * @see PApplet#hex(int, int)
   * @see PApplet#binary(byte)
   * @see PApplet#unbinary(String)
   */
  static final public int unhex(String value) {
    // has to parse as a Long so that it'll work for numbers bigger than 2^31
    return (int) (Long.parseLong(value, 16));
  }

  //

  /**
   * Returns a String that contains the binary value of a byte.
   * The returned value will always have 8 digits.
   */
  static final public String binary(byte value) {
    return binary(value, 8);
  }

  /**
   * Returns a String that contains the binary value of a char.
   * The returned value will always have 16 digits because chars
   * are two bytes long.
   */
  static final public String binary(char value) {
    return binary(value, 16);
  }

  /**
   * Returns a String that contains the binary value of an int. The length
   * depends on the size of the number itself. If you want a specific number
   * of digits use binary(int what, int digits) to specify how many.
   */
  static final public String binary(int value) {
    return binary(value, 32);
  }

  /*
   * Returns a String that contains the binary value of an int.
   * The digits parameter determines how many digits will be used.
   */

 /**
   * ( begin auto-generated from binary.xml )
   *
   * Converts a byte, char, int, or color to a String containing the
   * equivalent binary notation. For example color(0, 102, 153, 255) will
   * convert to the String "11111111000000000110011010011001". This function
   * can help make your geeky debugging sessions much happier.
   * <br/> <br/>
   * Note that the maximum number of digits is 32, because an int value can
   * only represent up to 32 bits. Specifying more than 32 digits will simply
   * shorten the string to 32 anyway.
   *
   * ( end auto-generated )
  * @webref data:conversion
  * @param value value to convert
  * @param digits number of digits to return
  * @see PApplet#unbinary(String)
  * @see PApplet#hex(int,int)
  * @see PApplet#unhex(String)
  */
  static final public String binary(int value, int digits) {
    String stuff = Integer.toBinaryString(value);
    if (digits > 32) {
      digits = 32;
    }

    int length = stuff.length();
    if (length > digits) {
      return stuff.substring(length - digits);

    } else if (length < digits) {
      int offset = 32 - (digits-length);
      return "00000000000000000000000000000000".substring(offset) + stuff;
    }
    return stuff;
  }


 /**
   * ( begin auto-generated from unbinary.xml )
   *
   * Converts a String representation of a binary number to its equivalent
   * integer value. For example, unbinary("00001000") will return 8.
   *
   * ( end auto-generated )
   * @webref data:conversion
   * @param value String to convert to an integer
   * @see PApplet#binary(byte)
   * @see PApplet#hex(int,int)
   * @see PApplet#unhex(String)
   */
  static final public int unbinary(String value) {
    return Integer.parseInt(value, 2);
  }



  //////////////////////////////////////////////////////////////

  // COLOR FUNCTIONS

  // moved here so that they can work without
  // the graphics actually being instantiated (outside setup)


  /**
   * ( begin auto-generated from color.xml )
   *
   * Creates colors for storing in variables of the <b>color</b> datatype.
   * The parameters are interpreted as RGB or HSB values depending on the
   * current <b>colorMode()</b>. The default mode is RGB values from 0 to 255
   * and therefore, the function call <b>color(255, 204, 0)</b> will return a
   * bright yellow color. More about how colors are stored can be found in
   * the reference for the <a href="color_datatype.html">color</a> datatype.
   *
   * ( end auto-generated )
   * @webref color:creating_reading
   * @param gray number specifying value between white and black
   * @see PApplet#colorMode(int)
   */
  public final int color(int gray) {
    if (g == null) {
      if (gray > 255) gray = 255; else if (gray < 0) gray = 0;
      return 0xff000000 | (gray << 16) | (gray << 8) | gray;
    }
    return g.color(gray);
  }


  /**
   * @nowebref
   * @param fgray number specifying value between white and black
   */
  public final int color(float fgray) {
    if (g == null) {
      int gray = (int) fgray;
      if (gray > 255) gray = 255; else if (gray < 0) gray = 0;
      return 0xff000000 | (gray << 16) | (gray << 8) | gray;
    }
    return g.color(fgray);
  }


  /**
   * As of 0116 this also takes color(#FF8800, alpha)
   * @param alpha relative to current color range
   */
  public final int color(int gray, int alpha) {
    if (g == null) {
      if (alpha > 255) alpha = 255; else if (alpha < 0) alpha = 0;
      if (gray > 255) {
        // then assume this is actually a #FF8800
        return (alpha << 24) | (gray & 0xFFFFFF);
      } else {
        //if (gray > 255) gray = 255; else if (gray < 0) gray = 0;
        return (alpha << 24) | (gray << 16) | (gray << 8) | gray;
      }
    }
    return g.color(gray, alpha);
  }


  /**
   * @nowebref
   */
  public final int color(float fgray, float falpha) {
    if (g == null) {
      int gray = (int) fgray;
      int alpha = (int) falpha;
      if (gray > 255) gray = 255; else if (gray < 0) gray = 0;
      if (alpha > 255) alpha = 255; else if (alpha < 0) alpha = 0;
      return (alpha << 24) | (gray << 16) | (gray << 8) | gray;
    }
    return g.color(fgray, falpha);
  }


  /**
   * @param v1 red or hue values relative to the current color range
   * @param v2 green or saturation values relative to the current color range
   * @param v3 blue or brightness values relative to the current color range
   */
  public final int color(int v1, int v2, int v3) {
    if (g == null) {
      if (v1 > 255) v1 = 255; else if (v1 < 0) v1 = 0;
      if (v2 > 255) v2 = 255; else if (v2 < 0) v2 = 0;
      if (v3 > 255) v3 = 255; else if (v3 < 0) v3 = 0;

      return 0xff000000 | (v1 << 16) | (v2 << 8) | v3;
    }
    return g.color(v1, v2, v3);
  }


  public final int color(int v1, int v2, int v3, int alpha) {
    if (g == null) {
      if (alpha > 255) alpha = 255; else if (alpha < 0) alpha = 0;
      if (v1 > 255) v1 = 255; else if (v1 < 0) v1 = 0;
      if (v2 > 255) v2 = 255; else if (v2 < 0) v2 = 0;
      if (v3 > 255) v3 = 255; else if (v3 < 0) v3 = 0;

      return (alpha << 24) | (v1 << 16) | (v2 << 8) | v3;
    }
    return g.color(v1, v2, v3, alpha);
  }


  public final int color(float v1, float v2, float v3) {
    if (g == null) {
      if (v1 > 255) v1 = 255; else if (v1 < 0) v1 = 0;
      if (v2 > 255) v2 = 255; else if (v2 < 0) v2 = 0;
      if (v3 > 255) v3 = 255; else if (v3 < 0) v3 = 0;

      return 0xff000000 | ((int)v1 << 16) | ((int)v2 << 8) | (int)v3;
    }
    return g.color(v1, v2, v3);
  }


  public final int color(float v1, float v2, float v3, float alpha) {
    if (g == null) {
      if (alpha > 255) alpha = 255; else if (alpha < 0) alpha = 0;
      if (v1 > 255) v1 = 255; else if (v1 < 0) v1 = 0;
      if (v2 > 255) v2 = 255; else if (v2 < 0) v2 = 0;
      if (v3 > 255) v3 = 255; else if (v3 < 0) v3 = 0;

      return ((int)alpha << 24) | ((int)v1 << 16) | ((int)v2 << 8) | (int)v3;
    }
    return g.color(v1, v2, v3, alpha);
  }


  /**
   * ( begin auto-generated from lerpColor.xml )
   *
   * Calculates a color or colors between two color at a specific increment.
   * The <b>amt</b> parameter is the amount to interpolate between the two
   * values where 0.0 equal to the first point, 0.1 is very near the first
   * point, 0.5 is half-way in between, etc.
   *
   * ( end auto-generated )
   *
   * @webref color:creating_reading
   * @usage web_application
   * @param c1 interpolate from this color
   * @param c2 interpolate to this color
   * @param amt between 0.0 and 1.0
   * @see PImage#blendColor(int, int, int)
   * @see PGraphics#color(float, float, float, float)
   * @see PApplet#lerp(float, float, float)
   */
  public int lerpColor(int c1, int c2, float amt) {
    if (g != null) {
      return g.lerpColor(c1, c2, amt);
    }
    // use the default mode (RGB) if lerpColor is called before setup()
    return PGraphics.lerpColor(c1, c2, amt, RGB);
  }


  static public int blendColor(int c1, int c2, int mode) {
    return PImage.blendColor(c1, c2, mode);
  }



  //////////////////////////////////////////////////////////////


  public void frameMoved(int x, int y) {
    if (!fullScreen) {
      System.err.println(EXTERNAL_MOVE + " " + x + " " + y);
      System.err.flush();  // doesn't seem to help or hurt
    }
  }


  public void frameResized(int w, int h) {
  }


  //////////////////////////////////////////////////////////////

  // MAIN


  /**
   * main() method for running this class from the command line.
   * <p>
   * Usage: PApplet [options] &lt;class name&gt; [sketch args]
   * <ul>
   * <li>The [options] are one or several of the parameters seen below.
   * <li>The class name is required. If you're running outside the PDE and
   * your class is in a package, this should include the full name. That means
   * that if the class is called Sketchy and the package is com.sketchycompany
   * then com.sketchycompany.Sketchy should be used as the class name.
   * <li>The [sketch args] are any command line parameters you want to send to
   * the sketch itself. These will be passed into the args[] array in PApplet.
   * <p>
   * The simplest way to turn and sketch into an application is to
   * add the following code to your program:
   * <PRE>static public void main(String args[]) {
   *   PApplet.main("YourSketchName");
   * }</PRE>
   * That will properly launch your code from a double-clickable .jar
   * or from the command line.
   * <PRE>
   * Parameters useful for launching or also used by the PDE:
   *
   * --location=x,y         Upper-lefthand corner of where the applet
   *                        should appear on screen. If not used,
   *                        the default is to center on the main screen.
   *
   * --present              Presentation mode: blanks the entire screen and
   *                        shows the sketch by itself. If the sketch is
   *                        smaller than the screen, the background around it
   *                        will use the --window-color setting.
   *
   * --hide-stop            Use to hide the stop button in situations where
   *                        you don't want to allow users to exit. also
   *                        see the FAQ on information for capturing the ESC
   *                        key when running in presentation mode.
   *
   * --stop-color=#xxxxxx   Color of the 'stop' text used to quit an
   *                        sketch when it's in present mode.
   *
   * --window-color=#xxxxxx Background color of the window. The color used
   *                        around the sketch when it's smaller than the
   *                        minimum window size for the OS, and the matte
   *                        color when using 'present' mode.
   *
   * --sketch-path          Location of where to save files from functions
   *                        like saveStrings() or saveFrame(). defaults to
   *                        the folder that the java application was
   *                        launched from, which means if this isn't set by
   *                        the pde, everything goes into the same folder
   *                        as processing.exe.
   *
   * --display=n            Set what display should be used by this sketch.
   *                        Displays are numbered starting from 1. This will
   *                        be overridden by fullScreen() calls that specify
   *                        a display. Omitting this option will cause the
   *                        default display to be used.
   *
   * Parameters used by Processing when running via the PDE
   *
   * --external             set when the applet is being used by the PDE
   *
   * --editor-location=x,y  position of the upper-lefthand corner of the
   *                        editor window, for placement of applet window
   *
   * All parameters *after* the sketch class name are passed to the sketch
   * itself and available from its 'args' array while the sketch is running.
   *
   * @see PApplet#args
   * </PRE>
   */
  static public void main(final String[] args) {
    runSketch(args, null);
  }


  /**
   * Convenience method so that PApplet.main(YourSketch.class)
   * launches a sketch, rather than having to call getName() on it.
   */
  static public void main(final Class<?> mainClass, String... args) {
    main(mainClass.getName(), args);
  }


  /**
   * Convenience method so that PApplet.main("YourSketch") launches a sketch,
   * rather than having to wrap it into a single element String array.
   * @param mainClass name of the class to load (with package if any)
   */
  static public void main(final String mainClass) {
    main(mainClass, null);
  }


  /**
   * Convenience method so that PApplet.main("YourSketch", args) launches a
   * sketch, rather than having to wrap it into a String array, and appending
   * the 'args' array when not null.
   * @param mainClass name of the class to load (with package if any)
   * @param sketchArgs command line arguments to pass to the sketch's 'args'
   *             array. Note that this is <i>not</i> the same as the args passed
   *             to (and understood by) PApplet such as --display.
   */
  static public void main(final String mainClass, final String[] sketchArgs) {
    String[] args = new String[] { mainClass };
    if (sketchArgs != null) {
      args = concat(args, sketchArgs);
    }
    runSketch(args, null);
  }


  // Moving this back off the EDT for alpha 10. Not sure if we're helping or
  // hurting, but unless we do, errors inside settings() are never passed
  // through to the PDE. There are other ways around that, no doubt, but I'm
  // also suspecting that these "not showing up" bugs might be EDT issues.
  static public void runSketch(final String[] args,
                               final PApplet constructedSketch) {
//    EventQueue.invokeLater(new Runnable() {
//      public void run() {
//        runSketchEDT(args, constructedSketch);
//      }
//    });
//  }
//
//
//  /**
//   * Moving this to the EDT for 3.0a6 because that's the proper thing to do
//   * when messing with Swing components. But mostly we're AWT, so who knows.
//   */
//  static protected void runSketchEDT(final String[] args,
//                                     final PApplet constructedSketch) {
    // Supposed to help with flicker, but no effect on OS X.
    // TODO IIRC this helped on Windows, but need to double check.
    System.setProperty("sun.awt.noerasebackground", "true");

    // Remove 60fps limit on the JavaFX "pulse" timer
    System.setProperty("javafx.animation.fullspeed", "true");

    // Doesn't seem to do anything helpful here (that can't be done via Runner)
    //System.setProperty("com.apple.mrj.application.apple.menu.about.name", "potato");

    Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
      public void uncaughtException(Thread t, Throwable e) {
        e.printStackTrace();
        uncaughtThrowable = e;
      }
    });

    // This doesn't work, need to mess with Info.plist instead
    /*
    // In an exported application, add the Contents/Java folder to the
    // java.library.path, so that native libraries work properly.
    // Without this, the library path is only set to Contents/MacOS
    // where the launcher binary lives.
    if (platform == MACOSX) {
      URL coreJarURL =
        PApplet.class.getProtectionDomain().getCodeSource().getLocation();
      // The jarPath from above will/may be URL encoded (%20 for spaces)
      String coreJarPath = urlDecode(coreJarURL.getPath());
      if (coreJarPath.endsWith("/Contents/Java/core.jar")) {
        // remove the /core.jar part from the end
        String javaPath = coreJarPath.substring(0, coreJarPath.length() - 9);
        String libraryPath = System.getProperty("java.library.path");
        libraryPath += File.pathSeparator + javaPath;
        System.setProperty("java.library.path", libraryPath);
      }
    }
    */

    // Catch any HeadlessException to provide more useful feedback
    try {
      // Call validate() while resize events are in progress
      Toolkit.getDefaultToolkit().setDynamicLayout(true);
    } catch (HeadlessException e) {
      System.err.println("Cannot run sketch without a display. Read this for possible solutions:");
      System.err.println("https://github.com/processing/processing/wiki/Running-without-a-Display");
      System.exit(1);
    }

    // So that the system proxy setting are used by default
    System.setProperty("java.net.useSystemProxies", "true");

    if (args.length < 1) {
      System.err.println("Usage: PApplet [options] <class name> [sketch args]");
      System.err.println("See the Javadoc for PApplet for an explanation.");
      System.exit(1);
    }

    boolean external = false;
    int[] location = null;
    int[] editorLocation = null;

    String name = null;
    int windowColor = 0;
    int stopColor = 0xff808080;
    boolean hideStop = false;

    int displayNum = -1;  // use default
//    boolean fullScreen = false;
    boolean present = false;
//    boolean spanDisplays = false;
    int density = -1;

    String param = null, value = null;
    String folder = calcSketchPath();

    int argIndex = 0;
    while (argIndex < args.length) {
      int equals = args[argIndex].indexOf('=');
      if (equals != -1) {
        param = args[argIndex].substring(0, equals);
        value = args[argIndex].substring(equals + 1);

        if (param.equals(ARGS_EDITOR_LOCATION)) {
          external = true;
          editorLocation = parseInt(split(value, ','));

        } else if (param.equals(ARGS_DISPLAY)) {
          displayNum = parseInt(value, -1);
          if (displayNum == -1) {
            System.err.println("Could not parse " + value + " for " + ARGS_DISPLAY);
          }

        } else if (param.equals(ARGS_WINDOW_COLOR)) {
          if (value.charAt(0) == '#' && value.length() == 7) {
            value = value.substring(1);
            windowColor = 0xff000000 | Integer.parseInt(value, 16);
          } else {
            System.err.println(ARGS_WINDOW_COLOR + " should be a # followed by six digits");
          }

        } else if (param.equals(ARGS_STOP_COLOR)) {
          if (value.charAt(0) == '#' && value.length() == 7) {
            value = value.substring(1);
            stopColor = 0xff000000 | Integer.parseInt(value, 16);
          } else {
            System.err.println(ARGS_STOP_COLOR + " should be a # followed by six digits");
          }

        } else if (param.equals(ARGS_SKETCH_FOLDER)) {
          folder = value;

        } else if (param.equals(ARGS_LOCATION)) {
          location = parseInt(split(value, ','));

        } else if (param.equals(ARGS_DENSITY)) {
          density = parseInt(value, -1);
          if (density == -1) {
            System.err.println("Could not parse " + value + " for " + ARGS_DENSITY);
          } else if (density != 1 && density != 2) {
            density = -1;
            System.err.println(ARGS_DENSITY + " should be 1 or 2");
          }
        }

      } else {
        if (args[argIndex].equals(ARGS_PRESENT)) {
          present = true;

//        } else if (args[argIndex].equals(ARGS_SPAN_DISPLAYS)) {
//          spanDisplays = true;

        } else if (args[argIndex].equals(ARGS_HIDE_STOP)) {
          hideStop = true;

        } else if (args[argIndex].equals(ARGS_EXTERNAL)) {
          external = true;

        } else {
          name = args[argIndex];
          break;  // because of break, argIndex won't increment again
        }
      }
      argIndex++;
    }

//    // Now that sketch path is passed in args after the sketch name
//    // it's not set in the above loop(the above loop breaks after
//    // finding sketch name). So setting sketch path here.
//    // https://github.com/processing/processing/commit/0a14835e6f5f4766b022e73a8fe562318636727c
//    // TODO this is a hack added for PDE X and needs to be removed [fry 141104]
//    for (int i = 0; i < args.length; i++) {
//      if (args[i].startsWith(ARGS_SKETCH_FOLDER)){
//        folder = args[i].substring(args[i].indexOf('=') + 1);
//      }
//    }

    final PApplet sketch;
    if (constructedSketch != null) {
      sketch = constructedSketch;
    } else {
      try {
        Class<?> c =
          Thread.currentThread().getContextClassLoader().loadClass(name);
        sketch = (PApplet) c.getDeclaredConstructor().newInstance();
      } catch (RuntimeException re) {
        // Don't re-package runtime exceptions
        throw re;
      } catch (Exception e) {
        // Package non-runtime exceptions so we can throw them freely
        throw new RuntimeException(e);
      }
    }

    if (platform == MACOSX) {
      try {
        final String td = "processing.core.ThinkDifferent";
        Class<?> thinkDifferent =
          Thread.currentThread().getContextClassLoader().loadClass(td);
        Method method =
          thinkDifferent.getMethod("init", new Class[] { PApplet.class });
        method.invoke(null, new Object[] { sketch });
      } catch (Exception e) {
        e.printStackTrace();  // That's unfortunate
      }
    }

    // Set the suggested display that's coming from the command line
    // (and most likely, from the PDE's preference setting).
    sketch.display = displayNum;

    // Set the suggested density that is coming from command line
    // (most likely set from the PDE based on a system DPI scaling)
    sketch.suggestedDensity = density;

    sketch.present = present;

    // For 3.0.1, moved this above handleSettings() so that loadImage() can be
    // used inside settings(). Sets a terrible precedent, but the alternative
    // of not being able to size a sketch to an image is driving people loopy.
    // A handful of things that need to be set before init/start.
//    if (folder == null) {
//      folder = calcSketchPath();
//    }
    sketch.sketchPath = folder;

    // Don't set 'args' to a zero-length array if it should be null [3.0a8]
    if (args.length != argIndex + 1) {
      // pass everything after the class name in as args to the sketch itself
      // (fixed for 2.0a5, this was just subsetting by 1, which didn't skip opts)
      sketch.args = PApplet.subset(args, argIndex + 1);
    }

    // Call the settings() method which will give us our size() call
//    try {
    sketch.handleSettings();
//    } catch (Throwable t) {
//      System.err.println("I think I'm gonna hurl");
//    }

////    sketch.spanDisplays = spanDisplays;
//    // If spanning screens, that means we're also full screen.
////    fullScreen |= spanDisplays;
//    if (spanDisplays) {
//      displayIndex = SPAN;
////      fullScreen = true;
//    }

//    // If the applet doesn't call for full screen, but the command line does,
//    // enable it. Conversely, if the command line does not, don't disable it.
//    // Query the applet to see if it wants to be full screen all the time.
//    //fullScreen |= sketch.sketchFullScreen();
//    sketch.fullScreen |= fullScreen;

    sketch.external = external;

    if (windowColor != 0) {
      sketch.windowColor = windowColor;
    }

    final PSurface surface = sketch.initSurface();
//      sketch.initSurface(windowColor, displayIndex, fullScreen, spanDisplays);

    /*
    // Wait until the applet has figured out its width. In a static mode app,
    // everything happens inside setup(), so this will be after setup() has
    // completed, and the empty draw() has set "finished" to true.
    while (sketch.defaultSize && !sketch.finished) {
      //System.out.println("default size");
      try {
        Thread.sleep(5);

      } catch (InterruptedException e) {
        //System.out.println("interrupt");
      }
    }
    */

    if (present) {
      if (hideStop) {
        stopColor = 0;  // they'll get the hint
      }
      surface.placePresent(stopColor);
    } else {
      surface.placeWindow(location, editorLocation);
    }

    // not always running externally when in present mode
    // moved above setVisible() in 3.0 alpha 11
    if (sketch.external) {
      surface.setupExternalMessages();
    }

    sketch.showSurface();
    sketch.startSurface();
    /*
    if (sketch.getGraphics().displayable()) {
      surface.setVisible(true);
    }

    //sketch.init();
    surface.startThread();
    */
  }


  /** Danger: available for advanced subclassing, but here be dragons. */
  protected void showSurface() {
    if (getGraphics().displayable()) {
      surface.setVisible(true);
    }
  }


  /** See warning in showSurface() */
  protected void startSurface() {
    surface.startThread();
  }


  protected PSurface initSurface() {
    g = createPrimaryGraphics();
    surface = g.createSurface();

    // Create fake Frame object to warn user about the changes
    if (g.displayable()) {
      frame = new Frame() {
        @Override
        public void setResizable(boolean resizable) {
          deprecationWarning("setResizable");
          surface.setResizable(resizable);
        }

        @Override
        public void setVisible(boolean visible) {
          deprecationWarning("setVisible");
          surface.setVisible(visible);
        }

        @Override
        public void setTitle(String title) {
          deprecationWarning("setTitle");
          surface.setTitle(title);
        }

        @Override
        public void setUndecorated(boolean ignored) {
          throw new RuntimeException("'frame' has been removed from Processing 3, " +
            "use fullScreen() to get an undecorated full screen frame");
        }

        // Can't override this one because it's called by Window's constructor
        /*
        @Override
        public void setLocation(int x, int y) {
          deprecationWarning("setLocation");
          surface.setLocation(x, y);
        }
        */

        @Override
        public void setSize(int w, int h) {
          deprecationWarning("setSize");
          surface.setSize(w, h);
        }

        private void deprecationWarning(String method) {
          PGraphics.showWarning("Use surface." + method + "() instead of " +
                                "frame." + method + " in Processing 3");
          //new Exception(method).printStackTrace(System.out);
        }
      };

      surface.initFrame(this); //, backgroundColor, displayNum, fullScreen, spanDisplays);
      surface.setTitle(getClass().getSimpleName());

    } else {
      surface.initOffscreen(this);  // for PDF/PSurfaceNone and friends
    }

//    init();
    return surface;
  }


//  protected void createSurface() {
//    surface = g.createSurface();
//    if (surface == null) {
//      System.err.println("This renderer needs to be updated for Processing 3");
//      System.err.println("The createSurface() method returned null.");
//      System.exit(1);
//    }
//  }


//  /**
//   * Return a Canvas object that can be embedded into other Java GUIs.
//   * This is necessary because PApplet no longer subclasses Component.
//   *
//   * <pre>
//   * PApplet sketch = new EmbedSketch();
//   * Canvas canvas = sketch.getCanvas();
//   * // add the canvas object to your project and validate() it
//   * sketch.init()  // start the animation thread
//   */
//  public Component getComponent() {
//    g = createPrimaryGraphics();
//    surface = g.createSurface();
//    return surface.initComponent(this);
//  }


  /** Convenience method, should only be called by PSurface subclasses. */
  static public void hideMenuBar() {
    if (PApplet.platform == PConstants.MACOSX) {
      // Call some native code to remove the menu bar on OS X. Not necessary
      // on Linux and Windows, who are happy to make full screen windows.
      japplemenubar.JAppleMenuBar.hide();
    }
  }


  /**
   * Convenience method for Python Mode to run an already-constructed sketch.
   * This makes it makes it easy to launch a sketch in Jython:
   *
   * <pre>class MySketch(PApplet):
   *     pass
   *
   *MySketch().runSketch();</pre>
   */
  protected void runSketch(final String[] args) {
    final String[] argsWithSketchName = new String[args.length + 1];
    System.arraycopy(args, 0, argsWithSketchName, 0, args.length);
    final String className = this.getClass().getSimpleName();
    final String cleanedClass =
      className.replaceAll("__[^_]+__\\$", "").replaceAll("\\$\\d+", "");
    argsWithSketchName[args.length] = cleanedClass;
    runSketch(argsWithSketchName, this);
  }


  /** Convenience method for Python Mode */
  protected void runSketch() {
    runSketch(new String[0]);
  }


  //////////////////////////////////////////////////////////////


  /**
   * ( begin auto-generated from beginRecord.xml )
   *
   * Opens a new file and all subsequent drawing functions are echoed to this
   * file as well as the display window. The <b>beginRecord()</b> function
   * requires two parameters, the first is the renderer and the second is the
   * file name. This function is always used with <b>endRecord()</b> to stop
   * the recording process and close the file.
   * <br /> <br />
   * Note that beginRecord() will only pick up any settings that happen after
   * it has been called. For instance, if you call textFont() before
   * beginRecord(), then that font will not be set for the file that you're
   * recording to.
   *
   * ( end auto-generated )
   *
   * @webref output:files
   * @param renderer PDF or SVG
   * @param filename filename for output
   * @see PApplet#endRecord()
   */
  public PGraphics beginRecord(String renderer, String filename) {
    filename = insertFrame(filename);
    PGraphics rec = createGraphics(width, height, renderer, filename);
    beginRecord(rec);
    return rec;
  }


  /**
   * @nowebref
   * Begin recording (echoing) commands to the specified PGraphics object.
   */
  public void beginRecord(PGraphics recorder) {
    this.recorder = recorder;
    recorder.beginDraw();
  }


 /**
   * ( begin auto-generated from endRecord.xml )
   *
   * Stops the recording process started by <b>beginRecord()</b> and closes
   * the file.
   *
   * ( end auto-generated )
  * @webref output:files
  * @see PApplet#beginRecord(String, String)
  */
  public void endRecord() {
    if (recorder != null) {
      recorder.endDraw();
      recorder.dispose();
      recorder = null;
    }
  }


  /**
   * ( begin auto-generated from beginRaw.xml )
   *
   * To create vectors from 3D data, use the <b>beginRaw()</b> and
   * <b>endRaw()</b> commands. These commands will grab the shape data just
   * before it is rendered to the screen. At this stage, your entire scene is
   * nothing but a long list of individual lines and triangles. This means
   * that a shape created with <b>sphere()</b> function will be made up of
   * hundreds of triangles, rather than a single object. Or that a
   * multi-segment line shape (such as a curve) will be rendered as
   * individual segments.
   * <br /><br />
   * When using <b>beginRaw()</b> and <b>endRaw()</b>, it's possible to write
   * to either a 2D or 3D renderer. For instance, <b>beginRaw()</b> with the
   * PDF library will write the geometry as flattened triangles and lines,
   * even if recording from the <b>P3D</b> renderer.
   * <br /><br />
   * If you want a background to show up in your files, use <b>rect(0, 0,
   * width, height)</b> after setting the <b>fill()</b> to the background
   * color. Otherwise the background will not be rendered to the file because
   * the background is not shape.
   * <br /><br />
   * Using <b>hint(ENABLE_DEPTH_SORT)</b> can improve the appearance of 3D
   * geometry drawn to 2D file formats. See the <b>hint()</b> reference for
   * more details.
   * <br /><br />
   * See examples in the reference for the <b>PDF</b> and <b>DXF</b>
   * libraries for more information.
   *
   * ( end auto-generated )
   *
   * @webref output:files
   * @param renderer for example, PDF or DXF
   * @param filename filename for output
   * @see PApplet#endRaw()
   * @see PApplet#hint(int)
   */
  public PGraphics beginRaw(String renderer, String filename) {
    filename = insertFrame(filename);
    PGraphics rec = createGraphics(width, height, renderer, filename);
    g.beginRaw(rec);
    return rec;
  }



  /**
   * @nowebref
   * Begin recording raw shape data to the specified renderer.
   *
   * This simply echoes to g.beginRaw(), but since is placed here (rather than
   * generated by preproc.pl) for clarity and so that it doesn't echo the
   * command should beginRecord() be in use.
   *
   * @param rawGraphics ???
   */
  public void beginRaw(PGraphics rawGraphics) {
    g.beginRaw(rawGraphics);
  }


  /**
   * ( begin auto-generated from endRaw.xml )
   *
   * Complement to <b>beginRaw()</b>; they must always be used together. See
   * the <b>beginRaw()</b> reference for details.
   *
   * ( end auto-generated )
   *
   * @webref output:files
   * @see PApplet#beginRaw(String, String)
   */
  public void endRaw() {
    g.endRaw();
  }


  /**
   * Starts shape recording and returns the PShape object that will
   * contain the geometry.
   */
  /*
  public PShape beginRecord() {
    return g.beginRecord();
  }
  */

  //////////////////////////////////////////////////////////////


  /**
   * ( begin auto-generated from loadPixels.xml )
   *
   * Loads the pixel data for the display window into the <b>pixels[]</b>
   * array. This function must always be called before reading from or
   * writing to <b>pixels[]</b>.
   * <br/><br/> renderers may or may not seem to require <b>loadPixels()</b>
   * or <b>updatePixels()</b>. However, the rule is that any time you want to
   * manipulate the <b>pixels[]</b> array, you must first call
   * <b>loadPixels()</b>, and after changes have been made, call
   * <b>updatePixels()</b>. Even if the renderer may not seem to use this
   * function in the current Processing release, this will always be subject
   * to change.
   *
   * ( end auto-generated )
   * <h3>Advanced</h3>
   * Override the g.pixels[] function to set the pixels[] array
   * that's part of the PApplet object. Allows the use of
   * pixels[] in the code, rather than g.pixels[].
   *
   * @webref image:pixels
   * @see PApplet#pixels
   * @see PApplet#updatePixels()
   */
  public void loadPixels() {
    g.loadPixels();
    pixels = g.pixels;
  }

 /**
   * ( begin auto-generated from updatePixels.xml )
   *
   * Updates the display window with the data in the <b>pixels[]</b> array.
   * Use in conjunction with <b>loadPixels()</b>. If you're only reading
   * pixels from the array, there's no need to call <b>updatePixels()</b>
   * unless there are changes.
   * <br/><br/> renderers may or may not seem to require <b>loadPixels()</b>
   * or <b>updatePixels()</b>. However, the rule is that any time you want to
   * manipulate the <b>pixels[]</b> array, you must first call
   * <b>loadPixels()</b>, and after changes have been made, call
   * <b>updatePixels()</b>. Even if the renderer may not seem to use this
   * function in the current Processing release, this will always be subject
   * to change.
   * <br/> <br/>
   * Currently, none of the renderers use the additional parameters to
   * <b>updatePixels()</b>, however this may be implemented in the future.
   *
   * ( end auto-generated )
   * @webref image:pixels
   * @see PApplet#loadPixels()
   * @see PApplet#pixels
   */
  public void updatePixels() {
    g.updatePixels();
  }

  /**
   * @nowebref
   * @param x1 x-coordinate of the upper-left corner
   * @param y1 y-coordinate of the upper-left corner
   * @param x2 width of the region
   * @param y2 height of the region
   */
  public void updatePixels(int x1, int y1, int x2, int y2) {
    g.updatePixels(x1, y1, x2, y2);
  }


  //////////////////////////////////////////////////////////////

  // EVERYTHING BELOW THIS LINE IS AUTOMATICALLY GENERATED. DO NOT TOUCH!
  // This includes the Javadoc comments, which are automatically copied from
  // the PImage and PGraphics source code files.

  // public functions for processing.core


  public PGL beginPGL() {
    return g.beginPGL();
  }


  public void endPGL() {
    if (recorder != null) recorder.endPGL();
    g.endPGL();
  }


  public void flush() {
    if (recorder != null) recorder.flush();
    g.flush();
  }


  public void hint(int which) {
    if (recorder != null) recorder.hint(which);
    g.hint(which);
  }


  /**
   * Start a new shape of type POLYGON
   */
  public void beginShape() {
    if (recorder != null) recorder.beginShape();
    g.beginShape();
  }


  /**
   * ( begin auto-generated from beginShape.xml )
   *
   * Using the <b>beginShape()</b> and <b>endShape()</b> functions allow
   * creating more complex forms. <b>beginShape()</b> begins recording
   * vertices for a shape and <b>endShape()</b> stops recording. The value of
   * the <b>MODE</b> parameter tells it which types of shapes to create from
   * the provided vertices. With no mode specified, the shape can be any
   * irregular polygon. The parameters available for beginShape() are POINTS,
   * LINES, TRIANGLES, TRIANGLE_FAN, TRIANGLE_STRIP, QUADS, and QUAD_STRIP.
   * After calling the <b>beginShape()</b> function, a series of
   * <b>vertex()</b> commands must follow. To stop drawing the shape, call
   * <b>endShape()</b>. The <b>vertex()</b> function with two parameters
   * specifies a position in 2D and the <b>vertex()</b> function with three
   * parameters specifies a position in 3D. Each shape will be outlined with
   * the current stroke color and filled with the fill color.
   * <br/> <br/>
   * Transformations such as <b>translate()</b>, <b>rotate()</b>, and
   * <b>scale()</b> do not work within <b>beginShape()</b>. It is also not
   * possible to use other shapes, such as <b>ellipse()</b> or <b>rect()</b>
   * within <b>beginShape()</b>.
   * <br/> <br/>
   * The P3D renderer settings allow <b>stroke()</b> and <b>fill()</b>
   * settings to be altered per-vertex, however the default P2D renderer does
   * not. Settings such as <b>strokeWeight()</b>, <b>strokeCap()</b>, and
   * <b>strokeJoin()</b> cannot be changed while inside a
   * <b>beginShape()</b>/<b>endShape()</b> block with any renderer.
   *
   * ( end auto-generated )
   * @webref shape:vertex
   * @param kind Either POINTS, LINES, TRIANGLES, TRIANGLE_FAN, TRIANGLE_STRIP, QUADS, or QUAD_STRIP
   * @see PShape
   * @see PGraphics#endShape()
   * @see PGraphics#vertex(float, float, float, float, float)
   * @see PGraphics#curveVertex(float, float, float)
   * @see PGraphics#bezierVertex(float, float, float, float, float, float, float, float, float)
   */
  public void beginShape(int kind) {
    if (recorder != null) recorder.beginShape(kind);
    g.beginShape(kind);
  }


  /**
   * Sets whether the upcoming vertex is part of an edge.
   * Equivalent to glEdgeFlag(), for people familiar with OpenGL.
   */
  public void edge(boolean edge) {
    if (recorder != null) recorder.edge(edge);
    g.edge(edge);
  }


  /**
   * ( begin auto-generated from normal.xml )
   *
   * Sets the current normal vector. This is for drawing three dimensional
   * shapes and surfaces and specifies a vector perpendicular to the surface
   * of the shape which determines how lighting affects it. Processing
   * attempts to automatically assign normals to shapes, but since that's
   * imperfect, this is a better option when you want more control. This
   * function is identical to glNormal3f() in OpenGL.
   *
   * ( end auto-generated )
   * @webref lights_camera:lights
   * @param nx x direction
   * @param ny y direction
   * @param nz z direction
   * @see PGraphics#beginShape(int)
   * @see PGraphics#endShape(int)
   * @see PGraphics#lights()
   */
  public void normal(float nx, float ny, float nz) {
    if (recorder != null) recorder.normal(nx, ny, nz);
    g.normal(nx, ny, nz);
  }


  public void attribPosition(String name, float x, float y, float z) {
    if (recorder != null) recorder.attribPosition(name, x, y, z);
    g.attribPosition(name, x, y, z);
  }


  public void attribNormal(String name, float nx, float ny, float nz) {
    if (recorder != null) recorder.attribNormal(name, nx, ny, nz);
    g.attribNormal(name, nx, ny, nz);
  }


  public void attribColor(String name, int color) {
    if (recorder != null) recorder.attribColor(name, color);
    g.attribColor(name, color);
  }


  public void attrib(String name, float... values) {
    if (recorder != null) recorder.attrib(name, values);
    g.attrib(name, values);
  }


  public void attrib(String name, int... values) {
    if (recorder != null) recorder.attrib(name, values);
    g.attrib(name, values);
  }


  public void attrib(String name, boolean... values) {
    if (recorder != null) recorder.attrib(name, values);
    g.attrib(name, values);
  }


  /**
   * ( begin auto-generated from textureMode.xml )
   *
   * Sets the coordinate space for texture mapping. There are two options,
   * IMAGE, which refers to the actual coordinates of the image, and
   * NORMAL, which refers to a normalized space of values ranging from 0
   * to 1. The default mode is IMAGE. In IMAGE, if an image is 100 x 200
   * pixels, mapping the image onto the entire size of a quad would require
   * the points (0,0) (0,100) (100,200) (0,200). The same mapping in
   * NORMAL_SPACE is (0,0) (0,1) (1,1) (0,1).
   *
   * ( end auto-generated )
   * @webref image:textures
   * @param mode either IMAGE or NORMAL
   * @see PGraphics#texture(PImage)
   * @see PGraphics#textureWrap(int)
   */
  public void textureMode(int mode) {
    if (recorder != null) recorder.textureMode(mode);
    g.textureMode(mode);
  }


  /**
   * ( begin auto-generated from textureWrap.xml )
   *
   * Description to come...
   *
   * ( end auto-generated from textureWrap.xml )
   *
   * @webref image:textures
   * @param wrap Either CLAMP (default) or REPEAT
   * @see PGraphics#texture(PImage)
   * @see PGraphics#textureMode(int)
   */
  public void textureWrap(int wrap) {
    if (recorder != null) recorder.textureWrap(wrap);
    g.textureWrap(wrap);
  }


  /**
   * ( begin auto-generated from texture.xml )
   *
   * Sets a texture to be applied to vertex points. The <b>texture()</b>
   * function must be called between <b>beginShape()</b> and
   * <b>endShape()</b> and before any calls to <b>vertex()</b>.
   * <br/> <br/>
   * When textures are in use, the fill color is ignored. Instead, use tint()
   * to specify the color of the texture as it is applied to the shape.
   *
   * ( end auto-generated )
   * @webref image:textures
   * @param image reference to a PImage object
   * @see PGraphics#textureMode(int)
   * @see PGraphics#textureWrap(int)
   * @see PGraphics#beginShape(int)
   * @see PGraphics#endShape(int)
   * @see PGraphics#vertex(float, float, float, float, float)
   */
  public void texture(PImage image) {
    if (recorder != null) recorder.texture(image);
    g.texture(image);
  }


  /**
   * Removes texture image for current shape.
   * Needs to be called between beginShape and endShape
   *
   */
  public void noTexture() {
    if (recorder != null) recorder.noTexture();
    g.noTexture();
  }


  public void vertex(float x, float y) {
    if (recorder != null) recorder.vertex(x, y);
    g.vertex(x, y);
  }


  public void vertex(float x, float y, float z) {
    if (recorder != null) recorder.vertex(x, y, z);
    g.vertex(x, y, z);
  }


  /**
   * Used by renderer subclasses or PShape to efficiently pass in already
   * formatted vertex information.
   * @param v vertex parameters, as a float array of length VERTEX_FIELD_COUNT
   */
  public void vertex(float[] v) {
    if (recorder != null) recorder.vertex(v);
    g.vertex(v);
  }


  public void vertex(float x, float y, float u, float v) {
    if (recorder != null) recorder.vertex(x, y, u, v);
    g.vertex(x, y, u, v);
  }


/**
   * ( begin auto-generated from vertex.xml )
   *
   * All shapes are constructed by connecting a series of vertices.
   * <b>vertex()</b> is used to specify the vertex coordinates for points,
   * lines, triangles, quads, and polygons and is used exclusively within the
   * <b>beginShape()</b> and <b>endShape()</b> function.<br />
   * <br />
   * Drawing a vertex in 3D using the <b>z</b> parameter requires the P3D
   * parameter in combination with size as shown in the above example.<br />
   * <br />
   * This function is also used to map a texture onto the geometry. The
   * <b>texture()</b> function declares the texture to apply to the geometry
   * and the <b>u</b> and <b>v</b> coordinates set define the mapping of this
   * texture to the form. By default, the coordinates used for <b>u</b> and
   * <b>v</b> are specified in relation to the image's size in pixels, but
   * this relation can be changed with <b>textureMode()</b>.
   *
   * ( end auto-generated )
 * @webref shape:vertex
 * @param x x-coordinate of the vertex
 * @param y y-coordinate of the vertex
 * @param z z-coordinate of the vertex
 * @param u horizontal coordinate for the texture mapping
 * @param v vertical coordinate for the texture mapping
 * @see PGraphics#beginShape(int)
 * @see PGraphics#endShape(int)
 * @see PGraphics#bezierVertex(float, float, float, float, float, float, float, float, float)
 * @see PGraphics#quadraticVertex(float, float, float, float, float, float)
 * @see PGraphics#curveVertex(float, float, float)
 * @see PGraphics#texture(PImage)
 */
  public void vertex(float x, float y, float z, float u, float v) {
    if (recorder != null) recorder.vertex(x, y, z, u, v);
    g.vertex(x, y, z, u, v);
  }


  /**
   * @webref shape:vertex
   */
  public void beginContour() {
    if (recorder != null) recorder.beginContour();
    g.beginContour();
  }


  /**
   * @webref shape:vertex
   */
  public void endContour() {
    if (recorder != null) recorder.endContour();
    g.endContour();
  }


  public void endShape() {
    if (recorder != null) recorder.endShape();
    g.endShape();
  }


  /**
   * ( begin auto-generated from endShape.xml )
   *
   * The <b>endShape()</b> function is the companion to <b>beginShape()</b>
   * and may only be called after <b>beginShape()</b>. When <b>endshape()</b>
   * is called, all of image data defined since the previous call to
   * <b>beginShape()</b> is written into the image buffer. The constant CLOSE
   * as the value for the MODE parameter to close the shape (to connect the
   * beginning and the end).
   *
   * ( end auto-generated )
   * @webref shape:vertex
   * @param mode use CLOSE to close the shape
   * @see PShape
   * @see PGraphics#beginShape(int)
   */
  public void endShape(int mode) {
    if (recorder != null) recorder.endShape(mode);
    g.endShape(mode);
  }


  /**
   * @webref shape
   * @param filename name of file to load, can be .svg or .obj
   * @see PShape
   * @see PApplet#createShape()
   */
  public PShape loadShape(String filename) {
    return g.loadShape(filename);
  }


  /**
   * @nowebref
   */
  public PShape loadShape(String filename, String options) {
    return g.loadShape(filename, options);
  }


  /**
   * @webref shape
   * @see PShape
   * @see PShape#endShape()
   * @see PApplet#loadShape(String)
   */
  public PShape createShape() {
    return g.createShape();
  }


  public PShape createShape(int type) {
    return g.createShape(type);
  }


  /**
   * @param kind either POINT, LINE, TRIANGLE, QUAD, RECT, ELLIPSE, ARC, BOX, SPHERE
   * @param p parameters that match the kind of shape
   */
  public PShape createShape(int kind, float... p) {
    return g.createShape(kind, p);
  }


  /**
   * ( begin auto-generated from loadShader.xml )
   *
   * This is a new reference entry for Processing 2.0. It will be updated shortly.
   *
   * ( end auto-generated )
   *
   * @webref rendering:shaders
   * @param fragFilename name of fragment shader file
   */
  public PShader loadShader(String fragFilename) {
    return g.loadShader(fragFilename);
  }


  /**
   * @param vertFilename name of vertex shader file
   */
  public PShader loadShader(String fragFilename, String vertFilename) {
    return g.loadShader(fragFilename, vertFilename);
  }


  /**
   * ( begin auto-generated from shader.xml )
   *
   * This is a new reference entry for Processing 2.0. It will be updated shortly.
   *
   * ( end auto-generated )
   *
   * @webref rendering:shaders
   * @param shader name of shader file
   */
  public void shader(PShader shader) {
    if (recorder != null) recorder.shader(shader);
    g.shader(shader);
  }


  /**
   * @param kind type of shader, either POINTS, LINES, or TRIANGLES
   */
  public void shader(PShader shader, int kind) {
    if (recorder != null) recorder.shader(shader, kind);
    g.shader(shader, kind);
  }


  /**
   * ( begin auto-generated from resetShader.xml )
   *
   * This is a new reference entry for Processing 2.0. It will be updated shortly.
   *
   * ( end auto-generated )
   *
   * @webref rendering:shaders
   */
  public void resetShader() {
    if (recorder != null) recorder.resetShader();
    g.resetShader();
  }


  /**
   * @param kind type of shader, either POINTS, LINES, or TRIANGLES
   */
  public void resetShader(int kind) {
    if (recorder != null) recorder.resetShader(kind);
    g.resetShader(kind);
  }


  /**
   * @param shader the fragment shader to apply
   */
  public void filter(PShader shader) {
    if (recorder != null) recorder.filter(shader);
    g.filter(shader);
  }


  /**
   * ( begin auto-generated from clip.xml )
   *
   * Limits the rendering to the boundaries of a rectangle defined
   * by the parameters. The boundaries are drawn based on the state
   * of the <b>imageMode()</b> fuction, either CORNER, CORNERS, or CENTER.
   *
   * ( end auto-generated )
   *
   * @webref rendering
   * @param a x-coordinate of the rectangle, by default
   * @param b y-coordinate of the rectangle, by default
   * @param c width of the rectangle, by default
   * @param d height of the rectangle, by default
   */
  public void clip(float a, float b, float c, float d) {
    if (recorder != null) recorder.clip(a, b, c, d);
    g.clip(a, b, c, d);
  }


  /**
   * ( begin auto-generated from noClip.xml )
   *
   * Disables the clipping previously started by the <b>clip()</b> function.
   *
   * ( end auto-generated )
   *
   * @webref rendering
   */
  public void noClip() {
    if (recorder != null) recorder.noClip();
    g.noClip();
  }


  /**
   * ( begin auto-generated from blendMode.xml )
   *
   * This is a new reference entry for Processing 2.0. It will be updated shortly.
   *
   * ( end auto-generated )
   *
   * @webref rendering
   * @param mode the blending mode to use
   */
  public void blendMode(int mode) {
    if (recorder != null) recorder.blendMode(mode);
    g.blendMode(mode);
  }


  public void bezierVertex(float x2, float y2,
                           float x3, float y3,
                           float x4, float y4) {
    if (recorder != null) recorder.bezierVertex(x2, y2, x3, y3, x4, y4);
    g.bezierVertex(x2, y2, x3, y3, x4, y4);
  }


/**
   * ( begin auto-generated from bezierVertex.xml )
   *
   * Specifies vertex coordinates for Bezier curves. Each call to
   * <b>bezierVertex()</b> defines the position of two control points and one
   * anchor point of a Bezier curve, adding a new segment to a line or shape.
   * The first time <b>bezierVertex()</b> is used within a
   * <b>beginShape()</b> call, it must be prefaced with a call to
   * <b>vertex()</b> to set the first anchor point. This function must be
   * used between <b>beginShape()</b> and <b>endShape()</b> and only when
   * there is no MODE parameter specified to <b>beginShape()</b>. Using the
   * 3D version requires rendering with P3D (see the Environment reference
   * for more information).
   *
   * ( end auto-generated )
 * @webref shape:vertex
 * @param x2 the x-coordinate of the 1st control point
 * @param y2 the y-coordinate of the 1st control point
 * @param z2 the z-coordinate of the 1st control point
 * @param x3 the x-coordinate of the 2nd control point
 * @param y3 the y-coordinate of the 2nd control point
 * @param z3 the z-coordinate of the 2nd control point
 * @param x4 the x-coordinate of the anchor point
 * @param y4 the y-coordinate of the anchor point
 * @param z4 the z-coordinate of the anchor point
 * @see PGraphics#curveVertex(float, float, float)
 * @see PGraphics#vertex(float, float, float, float, float)
 * @see PGraphics#quadraticVertex(float, float, float, float, float, float)
 * @see PGraphics#bezier(float, float, float, float, float, float, float, float, float, float, float, float)
 */
  public void bezierVertex(float x2, float y2, float z2,
                           float x3, float y3, float z3,
                           float x4, float y4, float z4) {
    if (recorder != null) recorder.bezierVertex(x2, y2, z2, x3, y3, z3, x4, y4, z4);
    g.bezierVertex(x2, y2, z2, x3, y3, z3, x4, y4, z4);
  }


  /**
   * @webref shape:vertex
   * @param cx the x-coordinate of the control point
   * @param cy the y-coordinate of the control point
   * @param x3 the x-coordinate of the anchor point
   * @param y3 the y-coordinate of the anchor point
   * @see PGraphics#curveVertex(float, float, float)
   * @see PGraphics#vertex(float, float, float, float, float)
   * @see PGraphics#bezierVertex(float, float, float, float, float, float)
   * @see PGraphics#bezier(float, float, float, float, float, float, float, float, float, float, float, float)
   */
  public void quadraticVertex(float cx, float cy,
                              float x3, float y3) {
    if (recorder != null) recorder.quadraticVertex(cx, cy, x3, y3);
    g.quadraticVertex(cx, cy, x3, y3);
  }


  /**
   * @param cz the z-coordinate of the control point
   * @param z3 the z-coordinate of the anchor point
   */
  public void quadraticVertex(float cx, float cy, float cz,
                              float x3, float y3, float z3) {
    if (recorder != null) recorder.quadraticVertex(cx, cy, cz, x3, y3, z3);
    g.quadraticVertex(cx, cy, cz, x3, y3, z3);
  }


 /**
   * ( begin auto-generated from curveVertex.xml )
   *
   * Specifies vertex coordinates for curves. This function may only be used
   * between <b>beginShape()</b> and <b>endShape()</b> and only when there is
   * no MODE parameter specified to <b>beginShape()</b>. The first and last
   * points in a series of <b>curveVertex()</b> lines will be used to guide
   * the beginning and end of a the curve. A minimum of four points is
   * required to draw a tiny curve between the second and third points.
   * Adding a fifth point with <b>curveVertex()</b> will draw the curve
   * between the second, third, and fourth points. The <b>curveVertex()</b>
   * function is an implementation of Catmull-Rom splines. Using the 3D
   * version requires rendering with P3D (see the Environment reference for
   * more information).
   *
   * ( end auto-generated )
  *
  * @webref shape:vertex
  * @param x the x-coordinate of the vertex
  * @param y the y-coordinate of the vertex
  * @see PGraphics#curve(float, float, float, float, float, float, float, float, float, float, float, float)
  * @see PGraphics#beginShape(int)
  * @see PGraphics#endShape(int)
  * @see PGraphics#vertex(float, float, float, float, float)
  * @see PGraphics#bezier(float, float, float, float, float, float, float, float, float, float, float, float)
  * @see PGraphics#quadraticVertex(float, float, float, float, float, float)
  */
  public void curveVertex(float x, float y) {
    if (recorder != null) recorder.curveVertex(x, y);
    g.curveVertex(x, y);
  }


  /**
   * @param z the z-coordinate of the vertex
   */
  public void curveVertex(float x, float y, float z) {
    if (recorder != null) recorder.curveVertex(x, y, z);
    g.curveVertex(x, y, z);
  }


  /**
   * ( begin auto-generated from point.xml )
   *
   * Draws a point, a coordinate in space at the dimension of one pixel. The
   * first parameter is the horizontal value for the point, the second value
   * is the vertical value for the point, and the optional third value is the
   * depth value. Drawing this shape in 3D with the <b>z</b> parameter
   * requires the P3D parameter in combination with <b>size()</b> as shown in
   * the above example.
   *
   * ( end auto-generated )
   *
   * @webref shape:2d_primitives
   * @param x x-coordinate of the point
   * @param y y-coordinate of the point
   * @see PGraphics#stroke(int)
   */
  public void point(float x, float y) {
    if (recorder != null) recorder.point(x, y);
    g.point(x, y);
  }


  /**
   * @param z z-coordinate of the point
   */
  public void point(float x, float y, float z) {
    if (recorder != null) recorder.point(x, y, z);
    g.point(x, y, z);
  }


  /**
   * ( begin auto-generated from line.xml )
   *
   * Draws a line (a direct path between two points) to the screen. The
   * version of <b>line()</b> with four parameters draws the line in 2D.  To
   * color a line, use the <b>stroke()</b> function. A line cannot be filled,
   * therefore the <b>fill()</b> function will not affect the color of a
   * line. 2D lines are drawn with a width of one pixel by default, but this
   * can be changed with the <b>strokeWeight()</b> function. The version with
   * six parameters allows the line to be placed anywhere within XYZ space.
   * Drawing this shape in 3D with the <b>z</b> parameter requires the P3D
   * parameter in combination with <b>size()</b> as shown in the above example.
   *
   * ( end auto-generated )
   * @webref shape:2d_primitives
   * @param x1 x-coordinate of the first point
   * @param y1 y-coordinate of the first point
   * @param x2 x-coordinate of the second point
   * @param y2 y-coordinate of the second point
   * @see PGraphics#strokeWeight(float)
   * @see PGraphics#strokeJoin(int)
   * @see PGraphics#strokeCap(int)
   * @see PGraphics#beginShape()
   */
  public void line(float x1, float y1, float x2, float y2) {
    if (recorder != null) recorder.line(x1, y1, x2, y2);
    g.line(x1, y1, x2, y2);
  }


  /**
   * @param z1 z-coordinate of the first point
   * @param z2 z-coordinate of the second point
   */
  public void line(float x1, float y1, float z1,
                   float x2, float y2, float z2) {
    if (recorder != null) recorder.line(x1, y1, z1, x2, y2, z2);
    g.line(x1, y1, z1, x2, y2, z2);
  }


  /**
   * ( begin auto-generated from triangle.xml )
   *
   * A triangle is a plane created by connecting three points. The first two
   * arguments specify the first point, the middle two arguments specify the
   * second point, and the last two arguments specify the third point.
   *
   * ( end auto-generated )
   * @webref shape:2d_primitives
   * @param x1 x-coordinate of the first point
   * @param y1 y-coordinate of the first point
   * @param x2 x-coordinate of the second point
   * @param y2 y-coordinate of the second point
   * @param x3 x-coordinate of the third point
   * @param y3 y-coordinate of the third point
   * @see PApplet#beginShape()
   */
  public void triangle(float x1, float y1, float x2, float y2,
                       float x3, float y3) {
    if (recorder != null) recorder.triangle(x1, y1, x2, y2, x3, y3);
    g.triangle(x1, y1, x2, y2, x3, y3);
  }


  /**
   * ( begin auto-generated from quad.xml )
   *
   * A quad is a quadrilateral, a four sided polygon. It is similar to a
   * rectangle, but the angles between its edges are not constrained to
   * ninety degrees. The first pair of parameters (x1,y1) sets the first
   * vertex and the subsequent pairs should proceed clockwise or
   * counter-clockwise around the defined shape.
   *
   * ( end auto-generated )
   * @webref shape:2d_primitives
   * @param x1 x-coordinate of the first corner
   * @param y1 y-coordinate of the first corner
   * @param x2 x-coordinate of the second corner
   * @param y2 y-coordinate of the second corner
   * @param x3 x-coordinate of the third corner
   * @param y3 y-coordinate of the third corner
   * @param x4 x-coordinate of the fourth corner
   * @param y4 y-coordinate of the fourth corner
   */
  public void quad(float x1, float y1, float x2, float y2,
                   float x3, float y3, float x4, float y4) {
    if (recorder != null) recorder.quad(x1, y1, x2, y2, x3, y3, x4, y4);
    g.quad(x1, y1, x2, y2, x3, y3, x4, y4);
  }


  /**
   * ( begin auto-generated from rectMode.xml )
   *
   * Modifies the location from which rectangles draw. The default mode is
   * <b>rectMode(CORNER)</b>, which specifies the location to be the upper
   * left corner of the shape and uses the third and fourth parameters of
   * <b>rect()</b> to specify the width and height. The syntax
   * <b>rectMode(CORNERS)</b> uses the first and second parameters of
   * <b>rect()</b> to set the location of one corner and uses the third and
   * fourth parameters to set the opposite corner. The syntax
   * <b>rectMode(CENTER)</b> draws the image from its center point and uses
   * the third and forth parameters of <b>rect()</b> to specify the image's
   * width and height. The syntax <b>rectMode(RADIUS)</b> draws the image
   * from its center point and uses the third and forth parameters of
   * <b>rect()</b> to specify half of the image's width and height. The
   * parameter must be written in ALL CAPS because Processing is a case
   * sensitive language. Note: In version 125, the mode named CENTER_RADIUS
   * was shortened to RADIUS.
   *
   * ( end auto-generated )
   * @webref shape:attributes
   * @param mode either CORNER, CORNERS, CENTER, or RADIUS
   * @see PGraphics#rect(float, float, float, float)
   */
  public void rectMode(int mode) {
    if (recorder != null) recorder.rectMode(mode);
    g.rectMode(mode);
  }


  /**
   * ( begin auto-generated from rect.xml )
   *
   * Draws a rectangle to the screen. A rectangle is a four-sided shape with
   * every angle at ninety degrees. By default, the first two parameters set
   * the location of the upper-left corner, the third sets the width, and the
   * fourth sets the height. These parameters may be changed with the
   * <b>rectMode()</b> function.
   *
   * ( end auto-generated )
   *
   * @webref shape:2d_primitives
   * @param a x-coordinate of the rectangle by default
   * @param b y-coordinate of the rectangle by default
   * @param c width of the rectangle by default
   * @param d height of the rectangle by default
   * @see PGraphics#rectMode(int)
   * @see PGraphics#quad(float, float, float, float, float, float, float, float)
   */
  public void rect(float a, float b, float c, float d) {
    if (recorder != null) recorder.rect(a, b, c, d);
    g.rect(a, b, c, d);
  }


  /**
   * @param r radii for all four corners
   */
  public void rect(float a, float b, float c, float d, float r) {
    if (recorder != null) recorder.rect(a, b, c, d, r);
    g.rect(a, b, c, d, r);
  }


  /**
   * @param tl radius for top-left corner
   * @param tr radius for top-right corner
   * @param br radius for bottom-right corner
   * @param bl radius for bottom-left corner
   */
  public void rect(float a, float b, float c, float d,
                   float tl, float tr, float br, float bl) {
    if (recorder != null) recorder.rect(a, b, c, d, tl, tr, br, bl);
    g.rect(a, b, c, d, tl, tr, br, bl);
  }


  public void square(float x, float y, float extent) {
    if (recorder != null) recorder.square(x, y, extent);
    g.square(x, y, extent);
  }


  /**
   * ( begin auto-generated from ellipseMode.xml )
   *
   * The origin of the ellipse is modified by the <b>ellipseMode()</b>
   * function. The default configuration is <b>ellipseMode(CENTER)</b>, which
   * specifies the location of the ellipse as the center of the shape. The
   * <b>RADIUS</b> mode is the same, but the width and height parameters to
   * <b>ellipse()</b> specify the radius of the ellipse, rather than the
   * diameter. The <b>CORNER</b> mode draws the shape from the upper-left
   * corner of its bounding box. The <b>CORNERS</b> mode uses the four
   * parameters to <b>ellipse()</b> to set two opposing corners of the
   * ellipse's bounding box. The parameter must be written in ALL CAPS
   * because Processing is a case-sensitive language.
   *
   * ( end auto-generated )
   * @webref shape:attributes
   * @param mode either CENTER, RADIUS, CORNER, or CORNERS
   * @see PApplet#ellipse(float, float, float, float)
   * @see PApplet#arc(float, float, float, float, float, float)
   */
  public void ellipseMode(int mode) {
    if (recorder != null) recorder.ellipseMode(mode);
    g.ellipseMode(mode);
  }


  /**
   * ( begin auto-generated from ellipse.xml )
   *
   * Draws an ellipse (oval) in the display window. An ellipse with an equal
   * <b>width</b> and <b>height</b> is a circle. The first two parameters set
   * the location, the third sets the width, and the fourth sets the height.
   * The origin may be changed with the <b>ellipseMode()</b> function.
   *
   * ( end auto-generated )
   * @webref shape:2d_primitives
   * @param a x-coordinate of the ellipse
   * @param b y-coordinate of the ellipse
   * @param c width of the ellipse by default
   * @param d height of the ellipse by default
   * @see PApplet#ellipseMode(int)
   * @see PApplet#arc(float, float, float, float, float, float)
   */
  public void ellipse(float a, float b, float c, float d) {
    if (recorder != null) recorder.ellipse(a, b, c, d);
    g.ellipse(a, b, c, d);
  }


  /**
   * ( begin auto-generated from arc.xml )
   *
   * Draws an arc in the display window. Arcs are drawn along the outer edge
   * of an ellipse defined by the <b>x</b>, <b>y</b>, <b>width</b> and
   * <b>height</b> parameters. The origin or the arc's ellipse may be changed
   * with the <b>ellipseMode()</b> function. The <b>start</b> and <b>stop</b>
   * parameters specify the angles at which to draw the arc.
   *
   * ( end auto-generated )
   * @webref shape:2d_primitives
   * @param a x-coordinate of the arc's ellipse
   * @param b y-coordinate of the arc's ellipse
   * @param c width of the arc's ellipse by default
   * @param d height of the arc's ellipse by default
   * @param start angle to start the arc, specified in radians
   * @param stop angle to stop the arc, specified in radians
   * @see PApplet#ellipse(float, float, float, float)
   * @see PApplet#ellipseMode(int)
   * @see PApplet#radians(float)
   * @see PApplet#degrees(float)
   */
  public void arc(float a, float b, float c, float d,
                  float start, float stop) {
    if (recorder != null) recorder.arc(a, b, c, d, start, stop);
    g.arc(a, b, c, d, start, stop);
  }


  /*
   * @param mode either OPEN, CHORD, or PIE
   */
  public void arc(float a, float b, float c, float d,
                  float start, float stop, int mode) {
    if (recorder != null) recorder.arc(a, b, c, d, start, stop, mode);
    g.arc(a, b, c, d, start, stop, mode);
  }


  public void circle(float x, float y, float extent) {
    if (recorder != null) recorder.circle(x, y, extent);
    g.circle(x, y, extent);
  }


  /**
   * ( begin auto-generated from box.xml )
   *
   * A box is an extruded rectangle. A box with equal dimension on all sides
   * is a cube.
   *
   * ( end auto-generated )
   *
   * @webref shape:3d_primitives
   * @param size dimension of the box in all dimensions (creates a cube)
   * @see PGraphics#sphere(float)
   */
  public void box(float size) {
    if (recorder != null) recorder.box(size);
    g.box(size);
  }


  /**
   * @param w dimension of the box in the x-dimension
   * @param h dimension of the box in the y-dimension
   * @param d dimension of the box in the z-dimension
   */
  public void box(float w, float h, float d) {
    if (recorder != null) recorder.box(w, h, d);
    g.box(w, h, d);
  }


  /**
   * ( begin auto-generated from sphereDetail.xml )
   *
   * Controls the detail used to render a sphere by adjusting the number of
   * vertices of the sphere mesh. The default resolution is 30, which creates
   * a fairly detailed sphere definition with vertices every 360/30 = 12
   * degrees. If you're going to render a great number of spheres per frame,
   * it is advised to reduce the level of detail using this function. The
   * setting stays active until <b>sphereDetail()</b> is called again with a
   * new parameter and so should <i>not</i> be called prior to every
   * <b>sphere()</b> statement, unless you wish to render spheres with
   * different settings, e.g. using less detail for smaller spheres or ones
   * further away from the camera. To control the detail of the horizontal
   * and vertical resolution independently, use the version of the functions
   * with two parameters.
   *
   * ( end auto-generated )
   *
   * <h3>Advanced</h3>
   * Code for sphereDetail() submitted by toxi [031031].
   * Code for enhanced u/v version from davbol [080801].
   *
   * @param res number of segments (minimum 3) used per full circle revolution
   * @webref shape:3d_primitives
   * @see PGraphics#sphere(float)
   */
  public void sphereDetail(int res) {
    if (recorder != null) recorder.sphereDetail(res);
    g.sphereDetail(res);
  }


  /**
   * @param ures number of segments used longitudinally per full circle revolutoin
   * @param vres number of segments used latitudinally from top to bottom
   */
  public void sphereDetail(int ures, int vres) {
    if (recorder != null) recorder.sphereDetail(ures, vres);
    g.sphereDetail(ures, vres);
  }


  /**
   * ( begin auto-generated from sphere.xml )
   *
   * A sphere is a hollow ball made from tessellated triangles.
   *
   * ( end auto-generated )
   *
   * <h3>Advanced</h3>
   * <P>
   * Implementation notes:
   * <P>
   * cache all the points of the sphere in a static array
   * top and bottom are just a bunch of triangles that land
   * in the center point
   * <P>
   * sphere is a series of concentric circles who radii vary
   * along the shape, based on, er.. cos or something
   * <PRE>
   * [toxi 031031] new sphere code. removed all multiplies with
   * radius, as scale() will take care of that anyway
   *
   * [toxi 031223] updated sphere code (removed modulos)
   * and introduced sphereAt(x,y,z,r)
   * to avoid additional translate()'s on the user/sketch side
   *
   * [davbol 080801] now using separate sphereDetailU/V
   * </PRE>
   *
   * @webref shape:3d_primitives
   * @param r the radius of the sphere
   * @see PGraphics#sphereDetail(int)
   */
  public void sphere(float r) {
    if (recorder != null) recorder.sphere(r);
    g.sphere(r);
  }


  /**
   * ( begin auto-generated from bezierPoint.xml )
   *
   * Evaluates the Bezier at point t for points a, b, c, d. The parameter t
   * varies between 0 and 1, a and d are points on the curve, and b and c are
   * the control points. This can be done once with the x coordinates and a
   * second time with the y coordinates to get the location of a bezier curve
   * at t.
   *
   * ( end auto-generated )
   *
   * <h3>Advanced</h3>
   * For instance, to convert the following example:<PRE>
   * stroke(255, 102, 0);
   * line(85, 20, 10, 10);
   * line(90, 90, 15, 80);
   * stroke(0, 0, 0);
   * bezier(85, 20, 10, 10, 90, 90, 15, 80);
   *
   * // draw it in gray, using 10 steps instead of the default 20
   * // this is a slower way to do it, but useful if you need
   * // to do things with the coordinates at each step
   * stroke(128);
   * beginShape(LINE_STRIP);
   * for (int i = 0; i <= 10; i++) {
   *   float t = i / 10.0f;
   *   float x = bezierPoint(85, 10, 90, 15, t);
   *   float y = bezierPoint(20, 10, 90, 80, t);
   *   vertex(x, y);
   * }
   * endShape();</PRE>
   *
   * @webref shape:curves
   * @param a coordinate of first point on the curve
   * @param b coordinate of first control point
   * @param c coordinate of second control point
   * @param d coordinate of second point on the curve
   * @param t value between 0 and 1
   * @see PGraphics#bezier(float, float, float, float, float, float, float, float, float, float, float, float)
   * @see PGraphics#bezierVertex(float, float, float, float, float, float)
   * @see PGraphics#curvePoint(float, float, float, float, float)
   */
  public float bezierPoint(float a, float b, float c, float d, float t) {
    return g.bezierPoint(a, b, c, d, t);
  }


  /**
   * ( begin auto-generated from bezierTangent.xml )
   *
   * Calculates the tangent of a point on a Bezier curve. There is a good
   * definition of <a href="http://en.wikipedia.org/wiki/Tangent"
   * target="new"><em>tangent</em> on Wikipedia</a>.
   *
   * ( end auto-generated )
   *
   * <h3>Advanced</h3>
   * Code submitted by Dave Bollinger (davol) for release 0136.
   *
   * @webref shape:curves
   * @param a coordinate of first point on the curve
   * @param b coordinate of first control point
   * @param c coordinate of second control point
   * @param d coordinate of second point on the curve
   * @param t value between 0 and 1
   * @see PGraphics#bezier(float, float, float, float, float, float, float, float, float, float, float, float)
   * @see PGraphics#bezierVertex(float, float, float, float, float, float)
   * @see PGraphics#curvePoint(float, float, float, float, float)
   */
  public float bezierTangent(float a, float b, float c, float d, float t) {
    return g.bezierTangent(a, b, c, d, t);
  }


  /**
   * ( begin auto-generated from bezierDetail.xml )
   *
   * Sets the resolution at which Beziers display. The default value is 20.
   * This function is only useful when using the P3D renderer as the default
   * P2D renderer does not use this information.
   *
   * ( end auto-generated )
   *
   * @webref shape:curves
   * @param detail resolution of the curves
   * @see PGraphics#curve(float, float, float, float, float, float, float, float, float, float, float, float)
   * @see PGraphics#curveVertex(float, float, float)
   * @see PGraphics#curveTightness(float)
   */
  public void bezierDetail(int detail) {
    if (recorder != null) recorder.bezierDetail(detail);
    g.bezierDetail(detail);
  }


  public void bezier(float x1, float y1,
                     float x2, float y2,
                     float x3, float y3,
                     float x4, float y4) {
    if (recorder != null) recorder.bezier(x1, y1, x2, y2, x3, y3, x4, y4);
    g.bezier(x1, y1, x2, y2, x3, y3, x4, y4);
  }


  /**
   * ( begin auto-generated from bezier.xml )
   *
   * Draws a Bezier curve on the screen. These curves are defined by a series
   * of anchor and control points. The first two parameters specify the first
   * anchor point and the last two parameters specify the other anchor point.
   * The middle parameters specify the control points which define the shape
   * of the curve. Bezier curves were developed by French engineer Pierre
   * Bezier. Using the 3D version requires rendering with P3D (see the
   * Environment reference for more information).
   *
   * ( end auto-generated )
   *
   * <h3>Advanced</h3>
   * Draw a cubic bezier curve. The first and last points are
   * the on-curve points. The middle two are the 'control' points,
   * or 'handles' in an application like Illustrator.
   * <P>
   * Identical to typing:
   * <PRE>beginShape();
   * vertex(x1, y1);
   * bezierVertex(x2, y2, x3, y3, x4, y4);
   * endShape();
   * </PRE>
   * In Postscript-speak, this would be:
   * <PRE>moveto(x1, y1);
   * curveto(x2, y2, x3, y3, x4, y4);</PRE>
   * If you were to try and continue that curve like so:
   * <PRE>curveto(x5, y5, x6, y6, x7, y7);</PRE>
   * This would be done in processing by adding these statements:
   * <PRE>bezierVertex(x5, y5, x6, y6, x7, y7)
   * </PRE>
   * To draw a quadratic (instead of cubic) curve,
   * use the control point twice by doubling it:
   * <PRE>bezier(x1, y1, cx, cy, cx, cy, x2, y2);</PRE>
   *
   * @webref shape:curves
   * @param x1 coordinates for the first anchor point
   * @param y1 coordinates for the first anchor point
   * @param z1 coordinates for the first anchor point
   * @param x2 coordinates for the first control point
   * @param y2 coordinates for the first control point
   * @param z2 coordinates for the first control point
   * @param x3 coordinates for the second control point
   * @param y3 coordinates for the second control point
   * @param z3 coordinates for the second control point
   * @param x4 coordinates for the second anchor point
   * @param y4 coordinates for the second anchor point
   * @param z4 coordinates for the second anchor point
   *
   * @see PGraphics#bezierVertex(float, float, float, float, float, float)
   * @see PGraphics#curve(float, float, float, float, float, float, float, float, float, float, float, float)
   */
  public void bezier(float x1, float y1, float z1,
                     float x2, float y2, float z2,
                     float x3, float y3, float z3,
                     float x4, float y4, float z4) {
    if (recorder != null) recorder.bezier(x1, y1, z1, x2, y2, z2, x3, y3, z3, x4, y4, z4);
    g.bezier(x1, y1, z1, x2, y2, z2, x3, y3, z3, x4, y4, z4);
  }


  /**
   * ( begin auto-generated from curvePoint.xml )
   *
   * Evalutes the curve at point t for points a, b, c, d. The parameter t
   * varies between 0 and 1, a and d are points on the curve, and b and c are
   * the control points. This can be done once with the x coordinates and a
   * second time with the y coordinates to get the location of a curve at t.
   *
   * ( end auto-generated )
   *
   * @webref shape:curves
   * @param a coordinate of first point on the curve
   * @param b coordinate of second point on the curve
   * @param c coordinate of third point on the curve
   * @param d coordinate of fourth point on the curve
   * @param t value between 0 and 1
   * @see PGraphics#curve(float, float, float, float, float, float, float, float, float, float, float, float)
   * @see PGraphics#curveVertex(float, float)
   * @see PGraphics#bezierPoint(float, float, float, float, float)
   */
  public float curvePoint(float a, float b, float c, float d, float t) {
    return g.curvePoint(a, b, c, d, t);
  }


  /**
   * ( begin auto-generated from curveTangent.xml )
   *
   * Calculates the tangent of a point on a curve. There's a good definition
   * of <em><a href="http://en.wikipedia.org/wiki/Tangent"
   * target="new">tangent</em> on Wikipedia</a>.
   *
   * ( end auto-generated )
   *
   * <h3>Advanced</h3>
   * Code thanks to Dave Bollinger (Bug #715)
   *
   * @webref shape:curves
   * @param a coordinate of first point on the curve
   * @param b coordinate of first control point
   * @param c coordinate of second control point
   * @param d coordinate of second point on the curve
   * @param t value between 0 and 1
   * @see PGraphics#curve(float, float, float, float, float, float, float, float, float, float, float, float)
   * @see PGraphics#curveVertex(float, float)
   * @see PGraphics#curvePoint(float, float, float, float, float)
   * @see PGraphics#bezierTangent(float, float, float, float, float)
   */
  public float curveTangent(float a, float b, float c, float d, float t) {
    return g.curveTangent(a, b, c, d, t);
  }


  /**
   * ( begin auto-generated from curveDetail.xml )
   *
   * Sets the resolution at which curves display. The default value is 20.
   * This function is only useful when using the P3D renderer as the default
   * P2D renderer does not use this information.
   *
   * ( end auto-generated )
   *
   * @webref shape:curves
   * @param detail resolution of the curves
   * @see PGraphics#curve(float, float, float, float, float, float, float, float, float, float, float, float)
   * @see PGraphics#curveVertex(float, float)
   * @see PGraphics#curveTightness(float)
   */
  public void curveDetail(int detail) {
    if (recorder != null) recorder.curveDetail(detail);
    g.curveDetail(detail);
  }


  /**
   * ( begin auto-generated from curveTightness.xml )
   *
   * Modifies the quality of forms created with <b>curve()</b> and
   * <b>curveVertex()</b>. The parameter <b>squishy</b> determines how the
   * curve fits to the vertex points. The value 0.0 is the default value for
   * <b>squishy</b> (this value defines the curves to be Catmull-Rom splines)
   * and the value 1.0 connects all the points with straight lines. Values
   * within the range -5.0 and 5.0 will deform the curves but will leave them
   * recognizable and as values increase in magnitude, they will continue to deform.
   *
   * ( end auto-generated )
   *
   * @webref shape:curves
   * @param tightness amount of deformation from the original vertices
   * @see PGraphics#curve(float, float, float, float, float, float, float, float, float, float, float, float)
   * @see PGraphics#curveVertex(float, float)
   */
  public void curveTightness(float tightness) {
    if (recorder != null) recorder.curveTightness(tightness);
    g.curveTightness(tightness);
  }


  /**
   * ( begin auto-generated from curve.xml )
   *
   * Draws a curved line on the screen. The first and second parameters
   * specify the beginning control point and the last two parameters specify
   * the ending control point. The middle parameters specify the start and
   * stop of the curve. Longer curves can be created by putting a series of
   * <b>curve()</b> functions together or using <b>curveVertex()</b>. An
   * additional function called <b>curveTightness()</b> provides control for
   * the visual quality of the curve. The <b>curve()</b> function is an
   * implementation of Catmull-Rom splines. Using the 3D version requires
   * rendering with P3D (see the Environment reference for more information).
   *
   * ( end auto-generated )
   *
   * <h3>Advanced</h3>
   * As of revision 0070, this function no longer doubles the first
   * and last points. The curves are a bit more boring, but it's more
   * mathematically correct, and properly mirrored in curvePoint().
   * <P>
   * Identical to typing out:<PRE>
   * beginShape();
   * curveVertex(x1, y1);
   * curveVertex(x2, y2);
   * curveVertex(x3, y3);
   * curveVertex(x4, y4);
   * endShape();
   * </PRE>
   *
   * @webref shape:curves
   * @param x1 coordinates for the beginning control point
   * @param y1 coordinates for the beginning control point
   * @param x2 coordinates for the first point
   * @param y2 coordinates for the first point
   * @param x3 coordinates for the second point
   * @param y3 coordinates for the second point
   * @param x4 coordinates for the ending control point
   * @param y4 coordinates for the ending control point
   * @see PGraphics#curveVertex(float, float)
   * @see PGraphics#curveTightness(float)
   * @see PGraphics#bezier(float, float, float, float, float, float, float, float, float, float, float, float)
   */
  public void curve(float x1, float y1,
                    float x2, float y2,
                    float x3, float y3,
                    float x4, float y4) {
    if (recorder != null) recorder.curve(x1, y1, x2, y2, x3, y3, x4, y4);
    g.curve(x1, y1, x2, y2, x3, y3, x4, y4);
  }


   /**
    * @param z1 coordinates for the beginning control point
    * @param z2 coordinates for the first point
    * @param z3 coordinates for the second point
    * @param z4 coordinates for the ending control point
    */
  public void curve(float x1, float y1, float z1,
                    float x2, float y2, float z2,
                    float x3, float y3, float z3,
                    float x4, float y4, float z4) {
    if (recorder != null) recorder.curve(x1, y1, z1, x2, y2, z2, x3, y3, z3, x4, y4, z4);
    g.curve(x1, y1, z1, x2, y2, z2, x3, y3, z3, x4, y4, z4);
  }


  /**
   * ( begin auto-generated from imageMode.xml )
   *
   * Modifies the location from which images draw. The default mode is
   * <b>imageMode(CORNER)</b>, which specifies the location to be the upper
   * left corner and uses the fourth and fifth parameters of <b>image()</b>
   * to set the image's width and height. The syntax
   * <b>imageMode(CORNERS)</b> uses the second and third parameters of
   * <b>image()</b> to set the location of one corner of the image and uses
   * the fourth and fifth parameters to set the opposite corner. Use
   * <b>imageMode(CENTER)</b> to draw images centered at the given x and y
   * position.<br />
   * <br />
   * The parameter to <b>imageMode()</b> must be written in ALL CAPS because
   * Processing is a case-sensitive language.
   *
   * ( end auto-generated )
   *
   * @webref image:loading_displaying
   * @param mode either CORNER, CORNERS, or CENTER
   * @see PApplet#loadImage(String, String)
   * @see PImage
   * @see PGraphics#image(PImage, float, float, float, float)
   * @see PGraphics#background(float, float, float, float)
   */
  public void imageMode(int mode) {
    if (recorder != null) recorder.imageMode(mode);
    g.imageMode(mode);
  }


  /**
   * ( begin auto-generated from image.xml )
   *
   * Displays images to the screen. The images must be in the sketch's "data"
   * directory to load correctly. Select "Add file..." from the "Sketch" menu
   * to add the image. Processing currently works with GIF, JPEG, and Targa
   * images. The <b>img</b> parameter specifies the image to display and the
   * <b>x</b> and <b>y</b> parameters define the location of the image from
   * its upper-left corner. The image is displayed at its original size
   * unless the <b>width</b> and <b>height</b> parameters specify a different
   * size.<br />
   * <br />
   * The <b>imageMode()</b> function changes the way the parameters work. For
   * example, a call to <b>imageMode(CORNERS)</b> will change the
   * <b>width</b> and <b>height</b> parameters to define the x and y values
   * of the opposite corner of the image.<br />
   * <br />
   * The color of an image may be modified with the <b>tint()</b> function.
   * This function will maintain transparency for GIF and PNG images.
   *
   * ( end auto-generated )
   *
   * <h3>Advanced</h3>
   * Starting with release 0124, when using the default (JAVA2D) renderer,
   * smooth() will also improve image quality of resized images.
   *
   * @webref image:loading_displaying
   * @param img the image to display
   * @param a x-coordinate of the image by default
   * @param b y-coordinate of the image by default
   * @see PApplet#loadImage(String, String)
   * @see PImage
   * @see PGraphics#imageMode(int)
   * @see PGraphics#tint(float)
   * @see PGraphics#background(float, float, float, float)
   * @see PGraphics#alpha(int)
   */
  public void image(PImage img, float a, float b) {
    if (recorder != null) recorder.image(img, a, b);
    g.image(img, a, b);
  }


  /**
   * @param c width to display the image by default
   * @param d height to display the image by default
   */
  public void image(PImage img, float a, float b, float c, float d) {
    if (recorder != null) recorder.image(img, a, b, c, d);
    g.image(img, a, b, c, d);
  }


  /**
   * Draw an image(), also specifying u/v coordinates.
   * In this method, the  u, v coordinates are always based on image space
   * location, regardless of the current textureMode().
   *
   * @nowebref
   */
  public void image(PImage img,
                    float a, float b, float c, float d,
                    int u1, int v1, int u2, int v2) {
    if (recorder != null) recorder.image(img, a, b, c, d, u1, v1, u2, v2);
    g.image(img, a, b, c, d, u1, v1, u2, v2);
  }


  /**
   * ( begin auto-generated from shapeMode.xml )
   *
   * Modifies the location from which shapes draw. The default mode is
   * <b>shapeMode(CORNER)</b>, which specifies the location to be the upper
   * left corner of the shape and uses the third and fourth parameters of
   * <b>shape()</b> to specify the width and height. The syntax
   * <b>shapeMode(CORNERS)</b> uses the first and second parameters of
   * <b>shape()</b> to set the location of one corner and uses the third and
   * fourth parameters to set the opposite corner. The syntax
   * <b>shapeMode(CENTER)</b> draws the shape from its center point and uses
   * the third and forth parameters of <b>shape()</b> to specify the width
   * and height. The parameter must be written in "ALL CAPS" because
   * Processing is a case sensitive language.
   *
   * ( end auto-generated )
   *
   * @webref shape:loading_displaying
   * @param mode either CORNER, CORNERS, CENTER
   * @see PShape
   * @see PGraphics#shape(PShape)
   * @see PGraphics#rectMode(int)
   */
  public void shapeMode(int mode) {
    if (recorder != null) recorder.shapeMode(mode);
    g.shapeMode(mode);
  }


  public void shape(PShape shape) {
    if (recorder != null) recorder.shape(shape);
    g.shape(shape);
  }


  /**
   * ( begin auto-generated from shape.xml )
   *
   * Displays shapes to the screen. The shapes must be in the sketch's "data"
   * directory to load correctly. Select "Add file..." from the "Sketch" menu
   * to add the shape. Processing currently works with SVG shapes only. The
   * <b>sh</b> parameter specifies the shape to display and the <b>x</b> and
   * <b>y</b> parameters define the location of the shape from its upper-left
   * corner. The shape is displayed at its original size unless the
   * <b>width</b> and <b>height</b> parameters specify a different size. The
   * <b>shapeMode()</b> function changes the way the parameters work. A call
   * to <b>shapeMode(CORNERS)</b>, for example, will change the width and
   * height parameters to define the x and y values of the opposite corner of
   * the shape.
   * <br /><br />
   * Note complex shapes may draw awkwardly with P3D. This renderer does not
   * yet support shapes that have holes or complicated breaks.
   *
   * ( end auto-generated )
   *
   * @webref shape:loading_displaying
   * @param shape the shape to display
   * @param x x-coordinate of the shape
   * @param y y-coordinate of the shape
   * @see PShape
   * @see PApplet#loadShape(String)
   * @see PGraphics#shapeMode(int)
   *
   * Convenience method to draw at a particular location.
   */
  public void shape(PShape shape, float x, float y) {
    if (recorder != null) recorder.shape(shape, x, y);
    g.shape(shape, x, y);
  }


  /**
   * @param a x-coordinate of the shape
   * @param b y-coordinate of the shape
   * @param c width to display the shape
   * @param d height to display the shape
   */
  public void shape(PShape shape, float a, float b, float c, float d) {
    if (recorder != null) recorder.shape(shape, a, b, c, d);
    g.shape(shape, a, b, c, d);
  }


  public void textAlign(int alignX) {
    if (recorder != null) recorder.textAlign(alignX);
    g.textAlign(alignX);
  }


  /**
   * ( begin auto-generated from textAlign.xml )
   *
   * Sets the current alignment for drawing text. The parameters LEFT,
   * CENTER, and RIGHT set the display characteristics of the letters in
   * relation to the values for the <b>x</b> and <b>y</b> parameters of the
   * <b>text()</b> function.
   * <br/> <br/>
   * In Processing 0125 and later, an optional second parameter can be used
   * to vertically align the text. BASELINE is the default, and the vertical
   * alignment will be reset to BASELINE if the second parameter is not used.
   * The TOP and CENTER parameters are straightforward. The BOTTOM parameter
   * offsets the line based on the current <b>textDescent()</b>. For multiple
   * lines, the final line will be aligned to the bottom, with the previous
   * lines appearing above it.
   * <br/> <br/>
   * When using <b>text()</b> with width and height parameters, BASELINE is
   * ignored, and treated as TOP. (Otherwise, text would by default draw
   * outside the box, since BASELINE is the default setting. BASELINE is not
   * a useful drawing mode for text drawn in a rectangle.)
   * <br/> <br/>
   * The vertical alignment is based on the value of <b>textAscent()</b>,
   * which many fonts do not specify correctly. It may be necessary to use a
   * hack and offset by a few pixels by hand so that the offset looks
   * correct. To do this as less of a hack, use some percentage of
   * <b>textAscent()</b> or <b>textDescent()</b> so that the hack works even
   * if you change the size of the font.
   *
   * ( end auto-generated )
   *
   * @webref typography:attributes
   * @param alignX horizontal alignment, either LEFT, CENTER, or RIGHT
   * @param alignY vertical alignment, either TOP, BOTTOM, CENTER, or BASELINE
   * @see PApplet#loadFont(String)
   * @see PFont
   * @see PGraphics#text(String, float, float)
   * @see PGraphics#textSize(float)
   * @see PGraphics#textAscent()
   * @see PGraphics#textDescent()
   */
  public void textAlign(int alignX, int alignY) {
    if (recorder != null) recorder.textAlign(alignX, alignY);
    g.textAlign(alignX, alignY);
  }


  /**
   * ( begin auto-generated from textAscent.xml )
   *
   * Returns ascent of the current font at its current size. This information
   * is useful for determining the height of the font above the baseline. For
   * example, adding the <b>textAscent()</b> and <b>textDescent()</b> values
   * will give you the total height of the line.
   *
   * ( end auto-generated )
   *
   * @webref typography:metrics
   * @see PGraphics#textDescent()
   */
  public float textAscent() {
    return g.textAscent();
  }


  /**
   * ( begin auto-generated from textDescent.xml )
   *
   * Returns descent of the current font at its current size. This
   * information is useful for determining the height of the font below the
   * baseline. For example, adding the <b>textAscent()</b> and
   * <b>textDescent()</b> values will give you the total height of the line.
   *
   * ( end auto-generated )
   *
   * @webref typography:metrics
   * @see PGraphics#textAscent()
   */
  public float textDescent() {
    return g.textDescent();
  }


  /**
   * ( begin auto-generated from textFont.xml )
   *
   * Sets the current font that will be drawn with the <b>text()</b>
   * function. Fonts must be loaded with <b>loadFont()</b> before it can be
   * used. This font will be used in all subsequent calls to the
   * <b>text()</b> function. If no <b>size</b> parameter is input, the font
   * will appear at its original size (the size it was created at with the
   * "Create Font..." tool) until it is changed with <b>textSize()</b>. <br
   * /> <br /> Because fonts are usually bitmaped, you should create fonts at
   * the sizes that will be used most commonly. Using <b>textFont()</b>
   * without the size parameter will result in the cleanest-looking text. <br
   * /><br /> With the default (JAVA2D) and PDF renderers, it's also possible
   * to enable the use of native fonts via the command
   * <b>hint(ENABLE_NATIVE_FONTS)</b>. This will produce vector text in
   * JAVA2D sketches and PDF output in cases where the vector data is
   * available: when the font is still installed, or the font is created via
   * the <b>createFont()</b> function (rather than the Create Font tool).
   *
   * ( end auto-generated )
   *
   * @webref typography:loading_displaying
   * @param which any variable of the type PFont
   * @see PApplet#createFont(String, float, boolean)
   * @see PApplet#loadFont(String)
   * @see PFont
   * @see PGraphics#text(String, float, float)
   * @see PGraphics#textSize(float)
   */
  public void textFont(PFont which) {
    if (recorder != null) recorder.textFont(which);
    g.textFont(which);
  }


  /**
   * @param size the size of the letters in units of pixels
   */
  public void textFont(PFont which, float size) {
    if (recorder != null) recorder.textFont(which, size);
    g.textFont(which, size);
  }


  /**
   * ( begin auto-generated from textLeading.xml )
   *
   * Sets the spacing between lines of text in units of pixels. This setting
   * will be used in all subsequent calls to the <b>text()</b> function.
   *
   * ( end auto-generated )
   *
   * @webref typography:attributes
   * @param leading the size in pixels for spacing between lines
   * @see PApplet#loadFont(String)
   * @see PFont#PFont
   * @see PGraphics#text(String, float, float)
   * @see PGraphics#textFont(PFont)
   * @see PGraphics#textSize(float)
   */
  public void textLeading(float leading) {
    if (recorder != null) recorder.textLeading(leading);
    g.textLeading(leading);
  }


  /**
   * ( begin auto-generated from textMode.xml )
   *
   * Sets the way text draws to the screen. In the default configuration, the
   * <b>MODEL</b> mode, it's possible to rotate, scale, and place letters in
   * two and three dimensional space.<br />
   * <br />
   * The <b>SHAPE</b> mode draws text using the the glyph outlines of
   * individual characters rather than as textures. This mode is only
   * supported with the <b>PDF</b> and <b>P3D</b> renderer settings. With the
   * <b>PDF</b> renderer, you must call <b>textMode(SHAPE)</b> before any
   * other drawing occurs. If the outlines are not available, then
   * <b>textMode(SHAPE)</b> will be ignored and <b>textMode(MODEL)</b> will
   * be used instead.<br />
   * <br />
   * The <b>textMode(SHAPE)</b> option in <b>P3D</b> can be combined with
   * <b>beginRaw()</b> to write vector-accurate text to 2D and 3D output
   * files, for instance <b>DXF</b> or <b>PDF</b>. The <b>SHAPE</b> mode is
   * not currently optimized for <b>P3D</b>, so if recording shape data, use
   * <b>textMode(MODEL)</b> until you're ready to capture the geometry with <b>beginRaw()</b>.
   *
   * ( end auto-generated )
   *
   * @webref typography:attributes
   * @param mode either MODEL or SHAPE
   * @see PApplet#loadFont(String)
   * @see PFont#PFont
   * @see PGraphics#text(String, float, float)
   * @see PGraphics#textFont(PFont)
   * @see PGraphics#beginRaw(PGraphics)
   * @see PApplet#createFont(String, float, boolean)
   */
  public void textMode(int mode) {
    if (recorder != null) recorder.textMode(mode);
    g.textMode(mode);
  }


  /**
   * ( begin auto-generated from textSize.xml )
   *
   * Sets the current font size. This size will be used in all subsequent
   * calls to the <b>text()</b> function. Font size is measured in units of pixels.
   *
   * ( end auto-generated )
   *
   * @webref typography:attributes
   * @param size the size of the letters in units of pixels
   * @see PApplet#loadFont(String)
   * @see PFont#PFont
   * @see PGraphics#text(String, float, float)
   * @see PGraphics#textFont(PFont)
   */
  public void textSize(float size) {
    if (recorder != null) recorder.textSize(size);
    g.textSize(size);
  }


  /**
   * @param c the character to measure
   */
  public float textWidth(char c) {
    return g.textWidth(c);
  }


  /**
   * ( begin auto-generated from textWidth.xml )
   *
   * Calculates and returns the width of any character or text string.
   *
   * ( end auto-generated )
   *
   * @webref typography:attributes
   * @param str the String of characters to measure
   * @see PApplet#loadFont(String)
   * @see PFont#PFont
   * @see PGraphics#text(String, float, float)
   * @see PGraphics#textFont(PFont)
   * @see PGraphics#textSize(float)
   */
  public float textWidth(String str) {
    return g.textWidth(str);
  }


  /**
   * @nowebref
   */
  public float textWidth(char[] chars, int start, int length) {
    return g.textWidth(chars, start, length);
  }


  /**
   * ( begin auto-generated from text.xml )
   *
   * Draws text to the screen. Displays the information specified in the
   * <b>data</b> or <b>stringdata</b> parameters on the screen in the
   * position specified by the <b>x</b> and <b>y</b> parameters and the
   * optional <b>z</b> parameter. A default font will be used unless a font
   * is set with the <b>textFont()</b> function. Change the color of the text
   * with the <b>fill()</b> function. The text displays in relation to the
   * <b>textAlign()</b> function, which gives the option to draw to the left,
   * right, and center of the coordinates.
   * <br /><br />
   * The <b>x2</b> and <b>y2</b> parameters define a rectangular area to
   * display within and may only be used with string data. For text drawn
   * inside a rectangle, the coordinates are interpreted based on the current
   * <b>rectMode()</b> setting.
   *
   * ( end auto-generated )
   *
   * @webref typography:loading_displaying
   * @param c the alphanumeric character to be displayed
   * @param x x-coordinate of text
   * @param y y-coordinate of text
   * @see PGraphics#textAlign(int, int)
   * @see PGraphics#textFont(PFont)
   * @see PGraphics#textMode(int)
   * @see PGraphics#textSize(float)
   * @see PGraphics#textLeading(float)
   * @see PGraphics#textWidth(String)
   * @see PGraphics#textAscent()
   * @see PGraphics#textDescent()
   * @see PGraphics#rectMode(int)
   * @see PGraphics#fill(int, float)
   * @see_external String
   */
  public void text(char c, float x, float y) {
    if (recorder != null) recorder.text(c, x, y);
    g.text(c, x, y);
  }


  /**
   * @param z z-coordinate of text
   */
  public void text(char c, float x, float y, float z) {
    if (recorder != null) recorder.text(c, x, y, z);
    g.text(c, x, y, z);
  }


  /**
   * <h3>Advanced</h3>
   * Draw a chunk of text.
   * Newlines that are \n (Unix newline or linefeed char, ascii 10)
   * are honored, but \r (carriage return, Windows and Mac OS) are
   * ignored.
   */
  public void text(String str, float x, float y) {
    if (recorder != null) recorder.text(str, x, y);
    g.text(str, x, y);
  }


  /**
   * <h3>Advanced</h3>
   * Method to draw text from an array of chars. This method will usually be
   * more efficient than drawing from a String object, because the String will
   * not be converted to a char array before drawing.
   * @param chars the alphanumberic symbols to be displayed
   * @param start array index at which to start writing characters
   * @param stop array index at which to stop writing characters
   */
  public void text(char[] chars, int start, int stop, float x, float y) {
    if (recorder != null) recorder.text(chars, start, stop, x, y);
    g.text(chars, start, stop, x, y);
  }


  /**
   * Same as above but with a z coordinate.
   */
  public void text(String str, float x, float y, float z) {
    if (recorder != null) recorder.text(str, x, y, z);
    g.text(str, x, y, z);
  }


  public void text(char[] chars, int start, int stop,
                   float x, float y, float z) {
    if (recorder != null) recorder.text(chars, start, stop, x, y, z);
    g.text(chars, start, stop, x, y, z);
  }


  /**
   * <h3>Advanced</h3>
   * Draw text in a box that is constrained to a particular size.
   * The current rectMode() determines what the coordinates mean
   * (whether x1/y1/x2/y2 or x/y/w/h).
   * <P/>
   * Note that the x,y coords of the start of the box
   * will align with the *ascent* of the text, not the baseline,
   * as is the case for the other text() functions.
   * <P/>
   * Newlines that are \n (Unix newline or linefeed char, ascii 10)
   * are honored, and \r (carriage return, Windows and Mac OS) are
   * ignored.
   *
   * @param x1 by default, the x-coordinate of text, see rectMode() for more info
   * @param y1 by default, the y-coordinate of text, see rectMode() for more info
   * @param x2 by default, the width of the text box, see rectMode() for more info
   * @param y2 by default, the height of the text box, see rectMode() for more info
   */
  public void text(String str, float x1, float y1, float x2, float y2) {
    if (recorder != null) recorder.text(str, x1, y1, x2, y2);
    g.text(str, x1, y1, x2, y2);
  }


  public void text(int num, float x, float y) {
    if (recorder != null) recorder.text(num, x, y);
    g.text(num, x, y);
  }


  public void text(int num, float x, float y, float z) {
    if (recorder != null) recorder.text(num, x, y, z);
    g.text(num, x, y, z);
  }


  /**
   * This does a basic number formatting, to avoid the
   * generally ugly appearance of printing floats.
   * Users who want more control should use their own nf() cmmand,
   * or if they want the long, ugly version of float,
   * use String.valueOf() to convert the float to a String first.
   *
   * @param num the numeric value to be displayed
   */
  public void text(float num, float x, float y) {
    if (recorder != null) recorder.text(num, x, y);
    g.text(num, x, y);
  }


  public void text(float num, float x, float y, float z) {
    if (recorder != null) recorder.text(num, x, y, z);
    g.text(num, x, y, z);
  }


  public void push() {
    if (recorder != null) recorder.push();
    g.push();
  }


  public void pop() {
    if (recorder != null) recorder.pop();
    g.pop();
  }


  /**
   * ( begin auto-generated from pushMatrix.xml )
   *
   * Pushes the current transformation matrix onto the matrix stack.
   * Understanding <b>pushMatrix()</b> and <b>popMatrix()</b> requires
   * understanding the concept of a matrix stack. The <b>pushMatrix()</b>
   * function saves the current coordinate system to the stack and
   * <b>popMatrix()</b> restores the prior coordinate system.
   * <b>pushMatrix()</b> and <b>popMatrix()</b> are used in conjuction with
   * the other transformation functions and may be embedded to control the
   * scope of the transformations.
   *
   * ( end auto-generated )
   *
   * @webref transform
   * @see PGraphics#popMatrix()
   * @see PGraphics#translate(float, float, float)
   * @see PGraphics#scale(float)
   * @see PGraphics#rotate(float)
   * @see PGraphics#rotateX(float)
   * @see PGraphics#rotateY(float)
   * @see PGraphics#rotateZ(float)
   */
  public void pushMatrix() {
    if (recorder != null) recorder.pushMatrix();
    g.pushMatrix();
  }


  /**
   * ( begin auto-generated from popMatrix.xml )
   *
   * Pops the current transformation matrix off the matrix stack.
   * Understanding pushing and popping requires understanding the concept of
   * a matrix stack. The <b>pushMatrix()</b> function saves the current
   * coordinate system to the stack and <b>popMatrix()</b> restores the prior
   * coordinate system. <b>pushMatrix()</b> and <b>popMatrix()</b> are used
   * in conjuction with the other transformation functions and may be
   * embedded to control the scope of the transformations.
   *
   * ( end auto-generated )
   *
   * @webref transform
   * @see PGraphics#pushMatrix()
   */
  public void popMatrix() {
    if (recorder != null) recorder.popMatrix();
    g.popMatrix();
  }


  /**
   * ( begin auto-generated from translate.xml )
   *
   * Specifies an amount to displace objects within the display window. The
   * <b>x</b> parameter specifies left/right translation, the <b>y</b>
   * parameter specifies up/down translation, and the <b>z</b> parameter
   * specifies translations toward/away from the screen. Using this function
   * with the <b>z</b> parameter requires using P3D as a parameter in
   * combination with size as shown in the above example. Transformations
   * apply to everything that happens after and subsequent calls to the
   * function accumulates the effect. For example, calling <b>translate(50,
   * 0)</b> and then <b>translate(20, 0)</b> is the same as <b>translate(70,
   * 0)</b>. If <b>translate()</b> is called within <b>draw()</b>, the
   * transformation is reset when the loop begins again. This function can be
   * further controlled by the <b>pushMatrix()</b> and <b>popMatrix()</b>.
   *
   * ( end auto-generated )
   *
   * @webref transform
   * @param x left/right translation
   * @param y up/down translation
   * @see PGraphics#popMatrix()
   * @see PGraphics#pushMatrix()
   * @see PGraphics#rotate(float)
   * @see PGraphics#rotateX(float)
   * @see PGraphics#rotateY(float)
   * @see PGraphics#rotateZ(float)
   * @see PGraphics#scale(float, float, float)
   */
  public void translate(float x, float y) {
    if (recorder != null) recorder.translate(x, y);
    g.translate(x, y);
  }


  /**
   * @param z forward/backward translation
   */
  public void translate(float x, float y, float z) {
    if (recorder != null) recorder.translate(x, y, z);
    g.translate(x, y, z);
  }


  /**
   * ( begin auto-generated from rotate.xml )
   *
   * Rotates a shape the amount specified by the <b>angle</b> parameter.
   * Angles should be specified in radians (values from 0 to TWO_PI) or
   * converted to radians with the <b>radians()</b> function.
   * <br/> <br/>
   * Objects are always rotated around their relative position to the origin
   * and positive numbers rotate objects in a clockwise direction.
   * Transformations apply to everything that happens after and subsequent
   * calls to the function accumulates the effect. For example, calling
   * <b>rotate(HALF_PI)</b> and then <b>rotate(HALF_PI)</b> is the same as
   * <b>rotate(PI)</b>. All tranformations are reset when <b>draw()</b>
   * begins again.
   * <br/> <br/>
   * Technically, <b>rotate()</b> multiplies the current transformation
   * matrix by a rotation matrix. This function can be further controlled by
   * the <b>pushMatrix()</b> and <b>popMatrix()</b>.
   *
   * ( end auto-generated )
   *
   * @webref transform
   * @param angle angle of rotation specified in radians
   * @see PGraphics#popMatrix()
   * @see PGraphics#pushMatrix()
   * @see PGraphics#rotateX(float)
   * @see PGraphics#rotateY(float)
   * @see PGraphics#rotateZ(float)
   * @see PGraphics#scale(float, float, float)
   * @see PApplet#radians(float)
   */
  public void rotate(float angle) {
    if (recorder != null) recorder.rotate(angle);
    g.rotate(angle);
  }


  /**
   * ( begin auto-generated from rotateX.xml )
   *
   * Rotates a shape around the x-axis the amount specified by the
   * <b>angle</b> parameter. Angles should be specified in radians (values
   * from 0 to PI*2) or converted to radians with the <b>radians()</b>
   * function. Objects are always rotated around their relative position to
   * the origin and positive numbers rotate objects in a counterclockwise
   * direction. Transformations apply to everything that happens after and
   * subsequent calls to the function accumulates the effect. For example,
   * calling <b>rotateX(PI/2)</b> and then <b>rotateX(PI/2)</b> is the same
   * as <b>rotateX(PI)</b>. If <b>rotateX()</b> is called within the
   * <b>draw()</b>, the transformation is reset when the loop begins again.
   * This function requires using P3D as a third parameter to <b>size()</b>
   * as shown in the example above.
   *
   * ( end auto-generated )
   *
   * @webref transform
   * @param angle angle of rotation specified in radians
   * @see PGraphics#popMatrix()
   * @see PGraphics#pushMatrix()
   * @see PGraphics#rotate(float)
   * @see PGraphics#rotateY(float)
   * @see PGraphics#rotateZ(float)
   * @see PGraphics#scale(float, float, float)
   * @see PGraphics#translate(float, float, float)
   */
  public void rotateX(float angle) {
    if (recorder != null) recorder.rotateX(angle);
    g.rotateX(angle);
  }


  /**
   * ( begin auto-generated from rotateY.xml )
   *
   * Rotates a shape around the y-axis the amount specified by the
   * <b>angle</b> parameter. Angles should be specified in radians (values
   * from 0 to PI*2) or converted to radians with the <b>radians()</b>
   * function. Objects are always rotated around their relative position to
   * the origin and positive numbers rotate objects in a counterclockwise
   * direction. Transformations apply to everything that happens after and
   * subsequent calls to the function accumulates the effect. For example,
   * calling <b>rotateY(PI/2)</b> and then <b>rotateY(PI/2)</b> is the same
   * as <b>rotateY(PI)</b>. If <b>rotateY()</b> is called within the
   * <b>draw()</b>, the transformation is reset when the loop begins again.
   * This function requires using P3D as a third parameter to <b>size()</b>
   * as shown in the examples above.
   *
   * ( end auto-generated )
   *
   * @webref transform
   * @param angle angle of rotation specified in radians
   * @see PGraphics#popMatrix()
   * @see PGraphics#pushMatrix()
   * @see PGraphics#rotate(float)
   * @see PGraphics#rotateX(float)
   * @see PGraphics#rotateZ(float)
   * @see PGraphics#scale(float, float, float)
   * @see PGraphics#translate(float, float, float)
   */
  public void rotateY(float angle) {
    if (recorder != null) recorder.rotateY(angle);
    g.rotateY(angle);
  }


  /**
   * ( begin auto-generated from rotateZ.xml )
   *
   * Rotates a shape around the z-axis the amount specified by the
   * <b>angle</b> parameter. Angles should be specified in radians (values
   * from 0 to PI*2) or converted to radians with the <b>radians()</b>
   * function. Objects are always rotated around their relative position to
   * the origin and positive numbers rotate objects in a counterclockwise
   * direction. Transformations apply to everything that happens after and
   * subsequent calls to the function accumulates the effect. For example,
   * calling <b>rotateZ(PI/2)</b> and then <b>rotateZ(PI/2)</b> is the same
   * as <b>rotateZ(PI)</b>. If <b>rotateZ()</b> is called within the
   * <b>draw()</b>, the transformation is reset when the loop begins again.
   * This function requires using P3D as a third parameter to <b>size()</b>
   * as shown in the examples above.
   *
   * ( end auto-generated )
   *
   * @webref transform
   * @param angle angle of rotation specified in radians
   * @see PGraphics#popMatrix()
   * @see PGraphics#pushMatrix()
   * @see PGraphics#rotate(float)
   * @see PGraphics#rotateX(float)
   * @see PGraphics#rotateY(float)
   * @see PGraphics#scale(float, float, float)
   * @see PGraphics#translate(float, float, float)
   */
  public void rotateZ(float angle) {
    if (recorder != null) recorder.rotateZ(angle);
    g.rotateZ(angle);
  }


  /**
   * <h3>Advanced</h3>
   * Rotate about a vector in space. Same as the glRotatef() function.
   * @nowebref
   * @param x
   * @param y
   * @param z
   */
  public void rotate(float angle, float x, float y, float z) {
    if (recorder != null) recorder.rotate(angle, x, y, z);
    g.rotate(angle, x, y, z);
  }


  /**
   * ( begin auto-generated from scale.xml )
   *
   * Increases or decreases the size of a shape by expanding and contracting
   * vertices. Objects always scale from their relative origin to the
   * coordinate system. Scale values are specified as decimal percentages.
   * For example, the function call <b>scale(2.0)</b> increases the dimension
   * of a shape by 200%. Transformations apply to everything that happens
   * after and subsequent calls to the function multiply the effect. For
   * example, calling <b>scale(2.0)</b> and then <b>scale(1.5)</b> is the
   * same as <b>scale(3.0)</b>. If <b>scale()</b> is called within
   * <b>draw()</b>, the transformation is reset when the loop begins again.
   * Using this fuction with the <b>z</b> parameter requires using P3D as a
   * parameter for <b>size()</b> as shown in the example above. This function
   * can be further controlled by <b>pushMatrix()</b> and <b>popMatrix()</b>.
   *
   * ( end auto-generated )
   *
   * @webref transform
   * @param s percentage to scale the object
   * @see PGraphics#pushMatrix()
   * @see PGraphics#popMatrix()
   * @see PGraphics#translate(float, float, float)
   * @see PGraphics#rotate(float)
   * @see PGraphics#rotateX(float)
   * @see PGraphics#rotateY(float)
   * @see PGraphics#rotateZ(float)
   */
  public void scale(float s) {
    if (recorder != null) recorder.scale(s);
    g.scale(s);
  }


  /**
   * <h3>Advanced</h3>
   * Scale in X and Y. Equivalent to scale(sx, sy, 1).
   *
   * Not recommended for use in 3D, because the z-dimension is just
   * scaled by 1, since there's no way to know what else to scale it by.
   *
   * @param x percentage to scale the object in the x-axis
   * @param y percentage to scale the object in the y-axis
   */
  public void scale(float x, float y) {
    if (recorder != null) recorder.scale(x, y);
    g.scale(x, y);
  }


  /**
   * @param z percentage to scale the object in the z-axis
   */
  public void scale(float x, float y, float z) {
    if (recorder != null) recorder.scale(x, y, z);
    g.scale(x, y, z);
  }


  /**
   * ( begin auto-generated from shearX.xml )
   *
   * Shears a shape around the x-axis the amount specified by the
   * <b>angle</b> parameter. Angles should be specified in radians (values
   * from 0 to PI*2) or converted to radians with the <b>radians()</b>
   * function. Objects are always sheared around their relative position to
   * the origin and positive numbers shear objects in a clockwise direction.
   * Transformations apply to everything that happens after and subsequent
   * calls to the function accumulates the effect. For example, calling
   * <b>shearX(PI/2)</b> and then <b>shearX(PI/2)</b> is the same as
   * <b>shearX(PI)</b>. If <b>shearX()</b> is called within the
   * <b>draw()</b>, the transformation is reset when the loop begins again.
   * <br/> <br/>
   * Technically, <b>shearX()</b> multiplies the current transformation
   * matrix by a rotation matrix. This function can be further controlled by
   * the <b>pushMatrix()</b> and <b>popMatrix()</b> functions.
   *
   * ( end auto-generated )
   *
   * @webref transform
   * @param angle angle of shear specified in radians
   * @see PGraphics#popMatrix()
   * @see PGraphics#pushMatrix()
   * @see PGraphics#shearY(float)
   * @see PGraphics#scale(float, float, float)
   * @see PGraphics#translate(float, float, float)
   * @see PApplet#radians(float)
   */
  public void shearX(float angle) {
    if (recorder != null) recorder.shearX(angle);
    g.shearX(angle);
  }


  /**
   * ( begin auto-generated from shearY.xml )
   *
   * Shears a shape around the y-axis the amount specified by the
   * <b>angle</b> parameter. Angles should be specified in radians (values
   * from 0 to PI*2) or converted to radians with the <b>radians()</b>
   * function. Objects are always sheared around their relative position to
   * the origin and positive numbers shear objects in a clockwise direction.
   * Transformations apply to everything that happens after and subsequent
   * calls to the function accumulates the effect. For example, calling
   * <b>shearY(PI/2)</b> and then <b>shearY(PI/2)</b> is the same as
   * <b>shearY(PI)</b>. If <b>shearY()</b> is called within the
   * <b>draw()</b>, the transformation is reset when the loop begins again.
   * <br/> <br/>
   * Technically, <b>shearY()</b> multiplies the current transformation
   * matrix by a rotation matrix. This function can be further controlled by
   * the <b>pushMatrix()</b> and <b>popMatrix()</b> functions.
   *
   * ( end auto-generated )
   *
   * @webref transform
   * @param angle angle of shear specified in radians
   * @see PGraphics#popMatrix()
   * @see PGraphics#pushMatrix()
   * @see PGraphics#shearX(float)
   * @see PGraphics#scale(float, float, float)
   * @see PGraphics#translate(float, float, float)
   * @see PApplet#radians(float)
   */
  public void shearY(float angle) {
    if (recorder != null) recorder.shearY(angle);
    g.shearY(angle);
  }


  /**
   * ( begin auto-generated from resetMatrix.xml )
   *
   * Replaces the current matrix with the identity matrix. The equivalent
   * function in OpenGL is glLoadIdentity().
   *
   * ( end auto-generated )
   *
   * @webref transform
   * @see PGraphics#pushMatrix()
   * @see PGraphics#popMatrix()
   * @see PGraphics#applyMatrix(PMatrix)
   * @see PGraphics#printMatrix()
   */
  public void resetMatrix() {
    if (recorder != null) recorder.resetMatrix();
    g.resetMatrix();
  }


  /**
   * ( begin auto-generated from applyMatrix.xml )
   *
   * Multiplies the current matrix by the one specified through the
   * parameters. This is very slow because it will try to calculate the
   * inverse of the transform, so avoid it whenever possible. The equivalent
   * function in OpenGL is glMultMatrix().
   *
   * ( end auto-generated )
   *
   * @webref transform
   * @source
   * @see PGraphics#pushMatrix()
   * @see PGraphics#popMatrix()
   * @see PGraphics#resetMatrix()
   * @see PGraphics#printMatrix()
   */
  public void applyMatrix(PMatrix source) {
    if (recorder != null) recorder.applyMatrix(source);
    g.applyMatrix(source);
  }


  public void applyMatrix(PMatrix2D source) {
    if (recorder != null) recorder.applyMatrix(source);
    g.applyMatrix(source);
  }


  /**
   * @param n00 numbers which define the 4x4 matrix to be multiplied
   * @param n01 numbers which define the 4x4 matrix to be multiplied
   * @param n02 numbers which define the 4x4 matrix to be multiplied
   * @param n10 numbers which define the 4x4 matrix to be multiplied
   * @param n11 numbers which define the 4x4 matrix to be multiplied
   * @param n12 numbers which define the 4x4 matrix to be multiplied
   */
  public void applyMatrix(float n00, float n01, float n02,
                          float n10, float n11, float n12) {
    if (recorder != null) recorder.applyMatrix(n00, n01, n02, n10, n11, n12);
    g.applyMatrix(n00, n01, n02, n10, n11, n12);
  }


  public void applyMatrix(PMatrix3D source) {
    if (recorder != null) recorder.applyMatrix(source);
    g.applyMatrix(source);
  }


  /**
   * @param n03 numbers which define the 4x4 matrix to be multiplied
   * @param n13 numbers which define the 4x4 matrix to be multiplied
   * @param n20 numbers which define the 4x4 matrix to be multiplied
   * @param n21 numbers which define the 4x4 matrix to be multiplied
   * @param n22 numbers which define the 4x4 matrix to be multiplied
   * @param n23 numbers which define the 4x4 matrix to be multiplied
   * @param n30 numbers which define the 4x4 matrix to be multiplied
   * @param n31 numbers which define the 4x4 matrix to be multiplied
   * @param n32 numbers which define the 4x4 matrix to be multiplied
   * @param n33 numbers which define the 4x4 matrix to be multiplied
   */
  public void applyMatrix(float n00, float n01, float n02, float n03,
                          float n10, float n11, float n12, float n13,
                          float n20, float n21, float n22, float n23,
                          float n30, float n31, float n32, float n33) {
    if (recorder != null) recorder.applyMatrix(n00, n01, n02, n03, n10, n11, n12, n13, n20, n21, n22, n23, n30, n31, n32, n33);
    g.applyMatrix(n00, n01, n02, n03, n10, n11, n12, n13, n20, n21, n22, n23, n30, n31, n32, n33);
  }


  public PMatrix getMatrix() {
    return g.getMatrix();
  }


  /**
   * Copy the current transformation matrix into the specified target.
   * Pass in null to create a new matrix.
   */
  public PMatrix2D getMatrix(PMatrix2D target) {
    return g.getMatrix(target);
  }


  /**
   * Copy the current transformation matrix into the specified target.
   * Pass in null to create a new matrix.
   */
  public PMatrix3D getMatrix(PMatrix3D target) {
    return g.getMatrix(target);
  }


  /**
   * Set the current transformation matrix to the contents of another.
   */
  public void setMatrix(PMatrix source) {
    if (recorder != null) recorder.setMatrix(source);
    g.setMatrix(source);
  }


  /**
   * Set the current transformation to the contents of the specified source.
   */
  public void setMatrix(PMatrix2D source) {
    if (recorder != null) recorder.setMatrix(source);
    g.setMatrix(source);
  }


  /**
   * Set the current transformation to the contents of the specified source.
   */
  public void setMatrix(PMatrix3D source) {
    if (recorder != null) recorder.setMatrix(source);
    g.setMatrix(source);
  }


  /**
   * ( begin auto-generated from printMatrix.xml )
   *
   * Prints the current matrix to the Console (the text window at the bottom
   * of Processing).
   *
   * ( end auto-generated )
   *
   * @webref transform
   * @see PGraphics#pushMatrix()
   * @see PGraphics#popMatrix()
   * @see PGraphics#resetMatrix()
   * @see PGraphics#applyMatrix(PMatrix)
   */
  public void printMatrix() {
    if (recorder != null) recorder.printMatrix();
    g.printMatrix();
  }


  /**
   * ( begin auto-generated from beginCamera.xml )
   *
   * The <b>beginCamera()</b> and <b>endCamera()</b> functions enable
   * advanced customization of the camera space. The functions are useful if
   * you want to more control over camera movement, however for most users,
   * the <b>camera()</b> function will be sufficient.<br /><br />The camera
   * functions will replace any transformations (such as <b>rotate()</b> or
   * <b>translate()</b>) that occur before them in <b>draw()</b>, but they
   * will not automatically replace the camera transform itself. For this
   * reason, camera functions should be placed at the beginning of
   * <b>draw()</b> (so that transformations happen afterwards), and the
   * <b>camera()</b> function can be used after <b>beginCamera()</b> if you
   * want to reset the camera before applying transformations.<br /><br
   * />This function sets the matrix mode to the camera matrix so calls such
   * as <b>translate()</b>, <b>rotate()</b>, applyMatrix() and resetMatrix()
   * affect the camera. <b>beginCamera()</b> should always be used with a
   * following <b>endCamera()</b> and pairs of <b>beginCamera()</b> and
   * <b>endCamera()</b> cannot be nested.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:camera
   * @see PGraphics#camera()
   * @see PGraphics#endCamera()
   * @see PGraphics#applyMatrix(PMatrix)
   * @see PGraphics#resetMatrix()
   * @see PGraphics#translate(float, float, float)
   * @see PGraphics#scale(float, float, float)
   */
  public void beginCamera() {
    if (recorder != null) recorder.beginCamera();
    g.beginCamera();
  }


  /**
   * ( begin auto-generated from endCamera.xml )
   *
   * The <b>beginCamera()</b> and <b>endCamera()</b> functions enable
   * advanced customization of the camera space. Please see the reference for
   * <b>beginCamera()</b> for a description of how the functions are used.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:camera
   * @see PGraphics#beginCamera()
   * @see PGraphics#camera(float, float, float, float, float, float, float, float, float)
   */
  public void endCamera() {
    if (recorder != null) recorder.endCamera();
    g.endCamera();
  }


  /**
   * ( begin auto-generated from camera.xml )
   *
   * Sets the position of the camera through setting the eye position, the
   * center of the scene, and which axis is facing upward. Moving the eye
   * position and the direction it is pointing (the center of the scene)
   * allows the images to be seen from different angles. The version without
   * any parameters sets the camera to the default position, pointing to the
   * center of the display window with the Y axis as up. The default values
   * are <b>camera(width/2.0, height/2.0, (height/2.0) / tan(PI*30.0 /
   * 180.0), width/2.0, height/2.0, 0, 0, 1, 0)</b>. This function is similar
   * to <b>gluLookAt()</b> in OpenGL, but it first clears the current camera settings.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:camera
   * @see PGraphics#beginCamera()
   * @see PGraphics#endCamera()
   * @see PGraphics#frustum(float, float, float, float, float, float)
   */
  public void camera() {
    if (recorder != null) recorder.camera();
    g.camera();
  }


/**
 * @param eyeX x-coordinate for the eye
 * @param eyeY y-coordinate for the eye
 * @param eyeZ z-coordinate for the eye
 * @param centerX x-coordinate for the center of the scene
 * @param centerY y-coordinate for the center of the scene
 * @param centerZ z-coordinate for the center of the scene
 * @param upX usually 0.0, 1.0, or -1.0
 * @param upY usually 0.0, 1.0, or -1.0
 * @param upZ usually 0.0, 1.0, or -1.0
 */
  public void camera(float eyeX, float eyeY, float eyeZ,
                     float centerX, float centerY, float centerZ,
                     float upX, float upY, float upZ) {
    if (recorder != null) recorder.camera(eyeX, eyeY, eyeZ, centerX, centerY, centerZ, upX, upY, upZ);
    g.camera(eyeX, eyeY, eyeZ, centerX, centerY, centerZ, upX, upY, upZ);
  }


/**
   * ( begin auto-generated from printCamera.xml )
   *
   * Prints the current camera matrix to the Console (the text window at the
   * bottom of Processing).
   *
   * ( end auto-generated )
 * @webref lights_camera:camera
 * @see PGraphics#camera(float, float, float, float, float, float, float, float, float)
 */
  public void printCamera() {
    if (recorder != null) recorder.printCamera();
    g.printCamera();
  }


  /**
   * ( begin auto-generated from ortho.xml )
   *
   * Sets an orthographic projection and defines a parallel clipping volume.
   * All objects with the same dimension appear the same size, regardless of
   * whether they are near or far from the camera. The parameters to this
   * function specify the clipping volume where left and right are the
   * minimum and maximum x values, top and bottom are the minimum and maximum
   * y values, and near and far are the minimum and maximum z values. If no
   * parameters are given, the default is used: ortho(0, width, 0, height,
   * -10, 10).
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:camera
   */
  public void ortho() {
    if (recorder != null) recorder.ortho();
    g.ortho();
  }


  /**
   * @param left left plane of the clipping volume
   * @param right right plane of the clipping volume
   * @param bottom bottom plane of the clipping volume
   * @param top top plane of the clipping volume
   */
  public void ortho(float left, float right,
                    float bottom, float top) {
    if (recorder != null) recorder.ortho(left, right, bottom, top);
    g.ortho(left, right, bottom, top);
  }


  /**
   * @param near maximum distance from the origin to the viewer
   * @param far maximum distance from the origin away from the viewer
   */
  public void ortho(float left, float right,
                    float bottom, float top,
                    float near, float far) {
    if (recorder != null) recorder.ortho(left, right, bottom, top, near, far);
    g.ortho(left, right, bottom, top, near, far);
  }


  /**
   * ( begin auto-generated from perspective.xml )
   *
   * Sets a perspective projection applying foreshortening, making distant
   * objects appear smaller than closer ones. The parameters define a viewing
   * volume with the shape of truncated pyramid. Objects near to the front of
   * the volume appear their actual size, while farther objects appear
   * smaller. This projection simulates the perspective of the world more
   * accurately than orthographic projection. The version of perspective
   * without parameters sets the default perspective and the version with
   * four parameters allows the programmer to set the area precisely. The
   * default values are: perspective(PI/3.0, width/height, cameraZ/10.0,
   * cameraZ*10.0) where cameraZ is ((height/2.0) / tan(PI*60.0/360.0));
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:camera
   */
  public void perspective() {
    if (recorder != null) recorder.perspective();
    g.perspective();
  }


  /**
   * @param fovy field-of-view angle (in radians) for vertical direction
   * @param aspect ratio of width to height
   * @param zNear z-position of nearest clipping plane
   * @param zFar z-position of farthest clipping plane
   */
  public void perspective(float fovy, float aspect, float zNear, float zFar) {
    if (recorder != null) recorder.perspective(fovy, aspect, zNear, zFar);
    g.perspective(fovy, aspect, zNear, zFar);
  }


  /**
   * ( begin auto-generated from frustum.xml )
   *
   * Sets a perspective matrix defined through the parameters. Works like
   * glFrustum, except it wipes out the current perspective matrix rather
   * than muliplying itself with it.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:camera
   * @param left left coordinate of the clipping plane
   * @param right right coordinate of the clipping plane
   * @param bottom bottom coordinate of the clipping plane
   * @param top top coordinate of the clipping plane
   * @param near near component of the clipping plane; must be greater than zero
   * @param far far component of the clipping plane; must be greater than the near value
   * @see PGraphics#camera(float, float, float, float, float, float, float, float, float)
   * @see PGraphics#beginCamera()
   * @see PGraphics#endCamera()
   * @see PGraphics#perspective(float, float, float, float)
   */
  public void frustum(float left, float right,
                      float bottom, float top,
                      float near, float far) {
    if (recorder != null) recorder.frustum(left, right, bottom, top, near, far);
    g.frustum(left, right, bottom, top, near, far);
  }


  /**
   * ( begin auto-generated from printProjection.xml )
   *
   * Prints the current projection matrix to the Console (the text window at
   * the bottom of Processing).
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:camera
   * @see PGraphics#camera(float, float, float, float, float, float, float, float, float)
   */
  public void printProjection() {
    if (recorder != null) recorder.printProjection();
    g.printProjection();
  }


  /**
   * ( begin auto-generated from screenX.xml )
   *
   * Takes a three-dimensional X, Y, Z position and returns the X value for
   * where it will appear on a (two-dimensional) screen.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:coordinates
   * @param x 3D x-coordinate to be mapped
   * @param y 3D y-coordinate to be mapped
   * @see PGraphics#screenY(float, float, float)
   * @see PGraphics#screenZ(float, float, float)
   */
  public float screenX(float x, float y) {
    return g.screenX(x, y);
  }


  /**
   * ( begin auto-generated from screenY.xml )
   *
   * Takes a three-dimensional X, Y, Z position and returns the Y value for
   * where it will appear on a (two-dimensional) screen.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:coordinates
   * @param x 3D x-coordinate to be mapped
   * @param y 3D y-coordinate to be mapped
   * @see PGraphics#screenX(float, float, float)
   * @see PGraphics#screenZ(float, float, float)
   */
  public float screenY(float x, float y) {
    return g.screenY(x, y);
  }


  /**
   * @param z 3D z-coordinate to be mapped
   */
  public float screenX(float x, float y, float z) {
    return g.screenX(x, y, z);
  }


  /**
   * @param z 3D z-coordinate to be mapped
   */
  public float screenY(float x, float y, float z) {
    return g.screenY(x, y, z);
  }


  /**
   * ( begin auto-generated from screenZ.xml )
   *
   * Takes a three-dimensional X, Y, Z position and returns the Z value for
   * where it will appear on a (two-dimensional) screen.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:coordinates
   * @param x 3D x-coordinate to be mapped
   * @param y 3D y-coordinate to be mapped
   * @param z 3D z-coordinate to be mapped
   * @see PGraphics#screenX(float, float, float)
   * @see PGraphics#screenY(float, float, float)
   */
  public float screenZ(float x, float y, float z) {
    return g.screenZ(x, y, z);
  }


  /**
   * ( begin auto-generated from modelX.xml )
   *
   * Returns the three-dimensional X, Y, Z position in model space. This
   * returns the X value for a given coordinate based on the current set of
   * transformations (scale, rotate, translate, etc.) The X value can be used
   * to place an object in space relative to the location of the original
   * point once the transformations are no longer in use.
   * <br/> <br/>
   * In the example, the <b>modelX()</b>, <b>modelY()</b>, and
   * <b>modelZ()</b> functions record the location of a box in space after
   * being placed using a series of translate and rotate commands. After
   * popMatrix() is called, those transformations no longer apply, but the
   * (x, y, z) coordinate returned by the model functions is used to place
   * another box in the same location.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:coordinates
   * @param x 3D x-coordinate to be mapped
   * @param y 3D y-coordinate to be mapped
   * @param z 3D z-coordinate to be mapped
   * @see PGraphics#modelY(float, float, float)
   * @see PGraphics#modelZ(float, float, float)
   */
  public float modelX(float x, float y, float z) {
    return g.modelX(x, y, z);
  }


  /**
   * ( begin auto-generated from modelY.xml )
   *
   * Returns the three-dimensional X, Y, Z position in model space. This
   * returns the Y value for a given coordinate based on the current set of
   * transformations (scale, rotate, translate, etc.) The Y value can be used
   * to place an object in space relative to the location of the original
   * point once the transformations are no longer in use.<br />
   * <br />
   * In the example, the <b>modelX()</b>, <b>modelY()</b>, and
   * <b>modelZ()</b> functions record the location of a box in space after
   * being placed using a series of translate and rotate commands. After
   * popMatrix() is called, those transformations no longer apply, but the
   * (x, y, z) coordinate returned by the model functions is used to place
   * another box in the same location.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:coordinates
   * @param x 3D x-coordinate to be mapped
   * @param y 3D y-coordinate to be mapped
   * @param z 3D z-coordinate to be mapped
   * @see PGraphics#modelX(float, float, float)
   * @see PGraphics#modelZ(float, float, float)
   */
  public float modelY(float x, float y, float z) {
    return g.modelY(x, y, z);
  }


  /**
   * ( begin auto-generated from modelZ.xml )
   *
   * Returns the three-dimensional X, Y, Z position in model space. This
   * returns the Z value for a given coordinate based on the current set of
   * transformations (scale, rotate, translate, etc.) The Z value can be used
   * to place an object in space relative to the location of the original
   * point once the transformations are no longer in use.<br />
   * <br />
   * In the example, the <b>modelX()</b>, <b>modelY()</b>, and
   * <b>modelZ()</b> functions record the location of a box in space after
   * being placed using a series of translate and rotate commands. After
   * popMatrix() is called, those transformations no longer apply, but the
   * (x, y, z) coordinate returned by the model functions is used to place
   * another box in the same location.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:coordinates
   * @param x 3D x-coordinate to be mapped
   * @param y 3D y-coordinate to be mapped
   * @param z 3D z-coordinate to be mapped
   * @see PGraphics#modelX(float, float, float)
   * @see PGraphics#modelY(float, float, float)
   */
  public float modelZ(float x, float y, float z) {
    return g.modelZ(x, y, z);
  }


  /**
   * ( begin auto-generated from pushStyle.xml )
   *
   * The <b>pushStyle()</b> function saves the current style settings and
   * <b>popStyle()</b> restores the prior settings. Note that these functions
   * are always used together. They allow you to change the style settings
   * and later return to what you had. When a new style is started with
   * <b>pushStyle()</b>, it builds on the current style information. The
   * <b>pushStyle()</b> and <b>popStyle()</b> functions can be embedded to
   * provide more control (see the second example above for a demonstration.)
   * <br /><br />
   * The style information controlled by the following functions are included
   * in the style:
   * fill(), stroke(), tint(), strokeWeight(), strokeCap(), strokeJoin(),
   * imageMode(), rectMode(), ellipseMode(), shapeMode(), colorMode(),
   * textAlign(), textFont(), textMode(), textSize(), textLeading(),
   * emissive(), specular(), shininess(), ambient()
   *
   * ( end auto-generated )
   *
   * @webref structure
   * @see PGraphics#popStyle()
   */
  public void pushStyle() {
    if (recorder != null) recorder.pushStyle();
    g.pushStyle();
  }


  /**
   * ( begin auto-generated from popStyle.xml )
   *
   * The <b>pushStyle()</b> function saves the current style settings and
   * <b>popStyle()</b> restores the prior settings; these functions are
   * always used together. They allow you to change the style settings and
   * later return to what you had. When a new style is started with
   * <b>pushStyle()</b>, it builds on the current style information. The
   * <b>pushStyle()</b> and <b>popStyle()</b> functions can be embedded to
   * provide more control (see the second example above for a demonstration.)
   *
   * ( end auto-generated )
   *
   * @webref structure
   * @see PGraphics#pushStyle()
   */
  public void popStyle() {
    if (recorder != null) recorder.popStyle();
    g.popStyle();
  }


  public void style(PStyle s) {
    if (recorder != null) recorder.style(s);
    g.style(s);
  }


  /**
   * ( begin auto-generated from strokeWeight.xml )
   *
   * Sets the width of the stroke used for lines, points, and the border
   * around shapes. All widths are set in units of pixels.
   * <br/> <br/>
   * When drawing with P3D, series of connected lines (such as the stroke
   * around a polygon, triangle, or ellipse) produce unattractive results
   * when a thick stroke weight is set (<a
   * href="http://code.google.com/p/processing/issues/detail?id=123">see
   * Issue 123</a>). With P3D, the minimum and maximum values for
   * <b>strokeWeight()</b> are controlled by the graphics card and the
   * operating system's OpenGL implementation. For instance, the thickness
   * may not go higher than 10 pixels.
   *
   * ( end auto-generated )
   *
   * @webref shape:attributes
   * @param weight the weight (in pixels) of the stroke
   * @see PGraphics#stroke(int, float)
   * @see PGraphics#strokeJoin(int)
   * @see PGraphics#strokeCap(int)
   */
  public void strokeWeight(float weight) {
    if (recorder != null) recorder.strokeWeight(weight);
    g.strokeWeight(weight);
  }


  /**
   * ( begin auto-generated from strokeJoin.xml )
   *
   * Sets the style of the joints which connect line segments. These joints
   * are either mitered, beveled, or rounded and specified with the
   * corresponding parameters MITER, BEVEL, and ROUND. The default joint is
   * MITER.
   * <br/> <br/>
   * This function is not available with the P3D renderer, (<a
   * href="http://code.google.com/p/processing/issues/detail?id=123">see
   * Issue 123</a>). More information about the renderers can be found in the
   * <b>size()</b> reference.
   *
   * ( end auto-generated )
   *
   * @webref shape:attributes
   * @param join either MITER, BEVEL, ROUND
   * @see PGraphics#stroke(int, float)
   * @see PGraphics#strokeWeight(float)
   * @see PGraphics#strokeCap(int)
   */
  public void strokeJoin(int join) {
    if (recorder != null) recorder.strokeJoin(join);
    g.strokeJoin(join);
  }


  /**
   * ( begin auto-generated from strokeCap.xml )
   *
   * Sets the style for rendering line endings. These ends are either
   * squared, extended, or rounded and specified with the corresponding
   * parameters SQUARE, PROJECT, and ROUND. The default cap is ROUND.
   * <br/> <br/>
   * This function is not available with the P3D renderer (<a
   * href="http://code.google.com/p/processing/issues/detail?id=123">see
   * Issue 123</a>). More information about the renderers can be found in the
   * <b>size()</b> reference.
   *
   * ( end auto-generated )
   *
   * @webref shape:attributes
   * @param cap either SQUARE, PROJECT, or ROUND
   * @see PGraphics#stroke(int, float)
   * @see PGraphics#strokeWeight(float)
   * @see PGraphics#strokeJoin(int)
   * @see PApplet#size(int, int, String, String)
   */
  public void strokeCap(int cap) {
    if (recorder != null) recorder.strokeCap(cap);
    g.strokeCap(cap);
  }


  /**
   * ( begin auto-generated from noStroke.xml )
   *
   * Disables drawing the stroke (outline). If both <b>noStroke()</b> and
   * <b>noFill()</b> are called, nothing will be drawn to the screen.
   *
   * ( end auto-generated )
   *
   * @webref color:setting
   * @see PGraphics#stroke(int, float)
   * @see PGraphics#fill(float, float, float, float)
   * @see PGraphics#noFill()
   */
  public void noStroke() {
    if (recorder != null) recorder.noStroke();
    g.noStroke();
  }


  /**
   * ( begin auto-generated from stroke.xml )
   *
   * Sets the color used to draw lines and borders around shapes. This color
   * is either specified in terms of the RGB or HSB color depending on the
   * current <b>colorMode()</b> (the default color space is RGB, with each
   * value in the range from 0 to 255).
   * <br/> <br/>
   * When using hexadecimal notation to specify a color, use "#" or "0x"
   * before the values (e.g. #CCFFAA, 0xFFCCFFAA). The # syntax uses six
   * digits to specify a color (the way colors are specified in HTML and
   * CSS). When using the hexadecimal notation starting with "0x", the
   * hexadecimal value must be specified with eight characters; the first two
   * characters define the alpha component and the remainder the red, green,
   * and blue components.
   * <br/> <br/>
   * The value for the parameter "gray" must be less than or equal to the
   * current maximum value as specified by <b>colorMode()</b>. The default
   * maximum value is 255.
   *
   * ( end auto-generated )
   *
   * @param rgb color value in hexadecimal notation
   * @see PGraphics#noStroke()
   * @see PGraphics#strokeWeight(float)
   * @see PGraphics#strokeJoin(int)
   * @see PGraphics#strokeCap(int)
   * @see PGraphics#fill(int, float)
   * @see PGraphics#noFill()
   * @see PGraphics#tint(int, float)
   * @see PGraphics#background(float, float, float, float)
   * @see PGraphics#colorMode(int, float, float, float, float)
   */
  public void stroke(int rgb) {
    if (recorder != null) recorder.stroke(rgb);
    g.stroke(rgb);
  }


  /**
   * @param alpha opacity of the stroke
   */
  public void stroke(int rgb, float alpha) {
    if (recorder != null) recorder.stroke(rgb, alpha);
    g.stroke(rgb, alpha);
  }


  /**
   * @param gray specifies a value between white and black
   */
  public void stroke(float gray) {
    if (recorder != null) recorder.stroke(gray);
    g.stroke(gray);
  }


  public void stroke(float gray, float alpha) {
    if (recorder != null) recorder.stroke(gray, alpha);
    g.stroke(gray, alpha);
  }


  /**
   * @param v1 red or hue value (depending on current color mode)
   * @param v2 green or saturation value (depending on current color mode)
   * @param v3 blue or brightness value (depending on current color mode)
   * @webref color:setting
   */
  public void stroke(float v1, float v2, float v3) {
    if (recorder != null) recorder.stroke(v1, v2, v3);
    g.stroke(v1, v2, v3);
  }


  public void stroke(float v1, float v2, float v3, float alpha) {
    if (recorder != null) recorder.stroke(v1, v2, v3, alpha);
    g.stroke(v1, v2, v3, alpha);
  }


  /**
   * ( begin auto-generated from noTint.xml )
   *
   * Removes the current fill value for displaying images and reverts to
   * displaying images with their original hues.
   *
   * ( end auto-generated )
   *
   * @webref image:loading_displaying
   * @usage web_application
   * @see PGraphics#tint(float, float, float, float)
   * @see PGraphics#image(PImage, float, float, float, float)
   */
  public void noTint() {
    if (recorder != null) recorder.noTint();
    g.noTint();
  }


  /**
   * ( begin auto-generated from tint.xml )
   *
   * Sets the fill value for displaying images. Images can be tinted to
   * specified colors or made transparent by setting the alpha.<br />
   * <br />
   * To make an image transparent, but not change it's color, use white as
   * the tint color and specify an alpha value. For instance, tint(255, 128)
   * will make an image 50% transparent (unless <b>colorMode()</b> has been
   * used).<br />
   * <br />
   * When using hexadecimal notation to specify a color, use "#" or "0x"
   * before the values (e.g. #CCFFAA, 0xFFCCFFAA). The # syntax uses six
   * digits to specify a color (the way colors are specified in HTML and
   * CSS). When using the hexadecimal notation starting with "0x", the
   * hexadecimal value must be specified with eight characters; the first two
   * characters define the alpha component and the remainder the red, green,
   * and blue components.<br />
   * <br />
   * The value for the parameter "gray" must be less than or equal to the
   * current maximum value as specified by <b>colorMode()</b>. The default
   * maximum value is 255.<br />
   * <br />
   * The <b>tint()</b> function is also used to control the coloring of
   * textures in 3D.
   *
   * ( end auto-generated )
   *
   * @webref image:loading_displaying
   * @usage web_application
   * @param rgb color value in hexadecimal notation
   * @see PGraphics#noTint()
   * @see PGraphics#image(PImage, float, float, float, float)
   */
  public void tint(int rgb) {
    if (recorder != null) recorder.tint(rgb);
    g.tint(rgb);
  }


  /**
   * @param alpha opacity of the image
   */
  public void tint(int rgb, float alpha) {
    if (recorder != null) recorder.tint(rgb, alpha);
    g.tint(rgb, alpha);
  }


  /**
   * @param gray specifies a value between white and black
   */
  public void tint(float gray) {
    if (recorder != null) recorder.tint(gray);
    g.tint(gray);
  }


  public void tint(float gray, float alpha) {
    if (recorder != null) recorder.tint(gray, alpha);
    g.tint(gray, alpha);
  }


/**
 * @param v1 red or hue value (depending on current color mode)
 * @param v2 green or saturation value (depending on current color mode)
 * @param v3 blue or brightness value (depending on current color mode)
 */
  public void tint(float v1, float v2, float v3) {
    if (recorder != null) recorder.tint(v1, v2, v3);
    g.tint(v1, v2, v3);
  }


  public void tint(float v1, float v2, float v3, float alpha) {
    if (recorder != null) recorder.tint(v1, v2, v3, alpha);
    g.tint(v1, v2, v3, alpha);
  }


  /**
   * ( begin auto-generated from noFill.xml )
   *
   * Disables filling geometry. If both <b>noStroke()</b> and <b>noFill()</b>
   * are called, nothing will be drawn to the screen.
   *
   * ( end auto-generated )
   *
   * @webref color:setting
   * @usage web_application
   * @see PGraphics#fill(float, float, float, float)
   * @see PGraphics#stroke(int, float)
   * @see PGraphics#noStroke()
   */
  public void noFill() {
    if (recorder != null) recorder.noFill();
    g.noFill();
  }


  /**
   * ( begin auto-generated from fill.xml )
   *
   * Sets the color used to fill shapes. For example, if you run <b>fill(204,
   * 102, 0)</b>, all subsequent shapes will be filled with orange. This
   * color is either specified in terms of the RGB or HSB color depending on
   * the current <b>colorMode()</b> (the default color space is RGB, with
   * each value in the range from 0 to 255).
   * <br/> <br/>
   * When using hexadecimal notation to specify a color, use "#" or "0x"
   * before the values (e.g. #CCFFAA, 0xFFCCFFAA). The # syntax uses six
   * digits to specify a color (the way colors are specified in HTML and
   * CSS). When using the hexadecimal notation starting with "0x", the
   * hexadecimal value must be specified with eight characters; the first two
   * characters define the alpha component and the remainder the red, green,
   * and blue components.
   * <br/> <br/>
   * The value for the parameter "gray" must be less than or equal to the
   * current maximum value as specified by <b>colorMode()</b>. The default
   * maximum value is 255.
   * <br/> <br/>
   * To change the color of an image (or a texture), use tint().
   *
   * ( end auto-generated )
   *
   * @webref color:setting
   * @usage web_application
   * @param rgb color variable or hex value
   * @see PGraphics#noFill()
   * @see PGraphics#stroke(int, float)
   * @see PGraphics#noStroke()
   * @see PGraphics#tint(int, float)
   * @see PGraphics#background(float, float, float, float)
   * @see PGraphics#colorMode(int, float, float, float, float)
   */
  public void fill(int rgb) {
    if (recorder != null) recorder.fill(rgb);
    g.fill(rgb);
  }


  /**
   * @param alpha opacity of the fill
   */
  public void fill(int rgb, float alpha) {
    if (recorder != null) recorder.fill(rgb, alpha);
    g.fill(rgb, alpha);
  }


  /**
   * @param gray number specifying value between white and black
   */
  public void fill(float gray) {
    if (recorder != null) recorder.fill(gray);
    g.fill(gray);
  }


  public void fill(float gray, float alpha) {
    if (recorder != null) recorder.fill(gray, alpha);
    g.fill(gray, alpha);
  }


  /**
   * @param v1 red or hue value (depending on current color mode)
   * @param v2 green or saturation value (depending on current color mode)
   * @param v3 blue or brightness value (depending on current color mode)
   */
  public void fill(float v1, float v2, float v3) {
    if (recorder != null) recorder.fill(v1, v2, v3);
    g.fill(v1, v2, v3);
  }


  public void fill(float v1, float v2, float v3, float alpha) {
    if (recorder != null) recorder.fill(v1, v2, v3, alpha);
    g.fill(v1, v2, v3, alpha);
  }


  /**
   * ( begin auto-generated from ambient.xml )
   *
   * Sets the ambient reflectance for shapes drawn to the screen. This is
   * combined with the ambient light component of environment. The color
   * components set through the parameters define the reflectance. For
   * example in the default color mode, setting v1=255, v2=126, v3=0, would
   * cause all the red light to reflect and half of the green light to
   * reflect. Used in combination with <b>emissive()</b>, <b>specular()</b>,
   * and <b>shininess()</b> in setting the material properties of shapes.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:material_properties
   * @usage web_application
   * @param rgb any value of the color datatype
   * @see PGraphics#emissive(float, float, float)
   * @see PGraphics#specular(float, float, float)
   * @see PGraphics#shininess(float)
   */
  public void ambient(int rgb) {
    if (recorder != null) recorder.ambient(rgb);
    g.ambient(rgb);
  }


/**
 * @param gray number specifying value between white and black
 */
  public void ambient(float gray) {
    if (recorder != null) recorder.ambient(gray);
    g.ambient(gray);
  }


/**
 * @param v1 red or hue value (depending on current color mode)
 * @param v2 green or saturation value (depending on current color mode)
 * @param v3 blue or brightness value (depending on current color mode)
 */
  public void ambient(float v1, float v2, float v3) {
    if (recorder != null) recorder.ambient(v1, v2, v3);
    g.ambient(v1, v2, v3);
  }


  /**
   * ( begin auto-generated from specular.xml )
   *
   * Sets the specular color of the materials used for shapes drawn to the
   * screen, which sets the color of hightlights. Specular refers to light
   * which bounces off a surface in a perferred direction (rather than
   * bouncing in all directions like a diffuse light). Used in combination
   * with <b>emissive()</b>, <b>ambient()</b>, and <b>shininess()</b> in
   * setting the material properties of shapes.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:material_properties
   * @usage web_application
   * @param rgb color to set
   * @see PGraphics#lightSpecular(float, float, float)
   * @see PGraphics#ambient(float, float, float)
   * @see PGraphics#emissive(float, float, float)
   * @see PGraphics#shininess(float)
   */
  public void specular(int rgb) {
    if (recorder != null) recorder.specular(rgb);
    g.specular(rgb);
  }


/**
 * gray number specifying value between white and black
 */
  public void specular(float gray) {
    if (recorder != null) recorder.specular(gray);
    g.specular(gray);
  }


/**
 * @param v1 red or hue value (depending on current color mode)
 * @param v2 green or saturation value (depending on current color mode)
 * @param v3 blue or brightness value (depending on current color mode)
 */
  public void specular(float v1, float v2, float v3) {
    if (recorder != null) recorder.specular(v1, v2, v3);
    g.specular(v1, v2, v3);
  }


  /**
   * ( begin auto-generated from shininess.xml )
   *
   * Sets the amount of gloss in the surface of shapes. Used in combination
   * with <b>ambient()</b>, <b>specular()</b>, and <b>emissive()</b> in
   * setting the material properties of shapes.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:material_properties
   * @usage web_application
   * @param shine degree of shininess
   * @see PGraphics#emissive(float, float, float)
   * @see PGraphics#ambient(float, float, float)
   * @see PGraphics#specular(float, float, float)
   */
  public void shininess(float shine) {
    if (recorder != null) recorder.shininess(shine);
    g.shininess(shine);
  }


  /**
   * ( begin auto-generated from emissive.xml )
   *
   * Sets the emissive color of the material used for drawing shapes drawn to
   * the screen. Used in combination with <b>ambient()</b>,
   * <b>specular()</b>, and <b>shininess()</b> in setting the material
   * properties of shapes.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:material_properties
   * @usage web_application
   * @param rgb color to set
   * @see PGraphics#ambient(float, float, float)
   * @see PGraphics#specular(float, float, float)
   * @see PGraphics#shininess(float)
   */
  public void emissive(int rgb) {
    if (recorder != null) recorder.emissive(rgb);
    g.emissive(rgb);
  }


  /**
   * gray number specifying value between white and black
   */
  public void emissive(float gray) {
    if (recorder != null) recorder.emissive(gray);
    g.emissive(gray);
  }


  /**
   * @param v1 red or hue value (depending on current color mode)
   * @param v2 green or saturation value (depending on current color mode)
   * @param v3 blue or brightness value (depending on current color mode)
   */
  public void emissive(float v1, float v2, float v3) {
    if (recorder != null) recorder.emissive(v1, v2, v3);
    g.emissive(v1, v2, v3);
  }


  /**
   * ( begin auto-generated from lights.xml )
   *
   * Sets the default ambient light, directional light, falloff, and specular
   * values. The defaults are ambientLight(128, 128, 128) and
   * directionalLight(128, 128, 128, 0, 0, -1), lightFalloff(1, 0, 0), and
   * lightSpecular(0, 0, 0). Lights need to be included in the draw() to
   * remain persistent in a looping program. Placing them in the setup() of a
   * looping program will cause them to only have an effect the first time
   * through the loop.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:lights
   * @usage web_application
   * @see PGraphics#ambientLight(float, float, float, float, float, float)
   * @see PGraphics#directionalLight(float, float, float, float, float, float)
   * @see PGraphics#pointLight(float, float, float, float, float, float)
   * @see PGraphics#spotLight(float, float, float, float, float, float, float, float, float, float, float)
   * @see PGraphics#noLights()
   */
  public void lights() {
    if (recorder != null) recorder.lights();
    g.lights();
  }


  /**
   * ( begin auto-generated from noLights.xml )
   *
   * Disable all lighting. Lighting is turned off by default and enabled with
   * the <b>lights()</b> function. This function can be used to disable
   * lighting so that 2D geometry (which does not require lighting) can be
   * drawn after a set of lighted 3D geometry.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:lights
   * @usage web_application
   * @see PGraphics#lights()
   */
  public void noLights() {
    if (recorder != null) recorder.noLights();
    g.noLights();
  }


  /**
   * ( begin auto-generated from ambientLight.xml )
   *
   * Adds an ambient light. Ambient light doesn't come from a specific
   * direction, the rays have light have bounced around so much that objects
   * are evenly lit from all sides. Ambient lights are almost always used in
   * combination with other types of lights. Lights need to be included in
   * the <b>draw()</b> to remain persistent in a looping program. Placing
   * them in the <b>setup()</b> of a looping program will cause them to only
   * have an effect the first time through the loop. The effect of the
   * parameters is determined by the current color mode.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:lights
   * @usage web_application
   * @param v1 red or hue value (depending on current color mode)
   * @param v2 green or saturation value (depending on current color mode)
   * @param v3 blue or brightness value (depending on current color mode)
   * @see PGraphics#lights()
   * @see PGraphics#directionalLight(float, float, float, float, float, float)
   * @see PGraphics#pointLight(float, float, float, float, float, float)
   * @see PGraphics#spotLight(float, float, float, float, float, float, float, float, float, float, float)
   */
  public void ambientLight(float v1, float v2, float v3) {
    if (recorder != null) recorder.ambientLight(v1, v2, v3);
    g.ambientLight(v1, v2, v3);
  }


  /**
   * @param x x-coordinate of the light
   * @param y y-coordinate of the light
   * @param z z-coordinate of the light
   */
  public void ambientLight(float v1, float v2, float v3,
                           float x, float y, float z) {
    if (recorder != null) recorder.ambientLight(v1, v2, v3, x, y, z);
    g.ambientLight(v1, v2, v3, x, y, z);
  }


  /**
   * ( begin auto-generated from directionalLight.xml )
   *
   * Adds a directional light. Directional light comes from one direction and
   * is stronger when hitting a surface squarely and weaker if it hits at a a
   * gentle angle. After hitting a surface, a directional lights scatters in
   * all directions. Lights need to be included in the <b>draw()</b> to
   * remain persistent in a looping program. Placing them in the
   * <b>setup()</b> of a looping program will cause them to only have an
   * effect the first time through the loop. The affect of the <b>v1</b>,
   * <b>v2</b>, and <b>v3</b> parameters is determined by the current color
   * mode. The <b>nx</b>, <b>ny</b>, and <b>nz</b> parameters specify the
   * direction the light is facing. For example, setting <b>ny</b> to -1 will
   * cause the geometry to be lit from below (the light is facing directly upward).
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:lights
   * @usage web_application
   * @param v1 red or hue value (depending on current color mode)
   * @param v2 green or saturation value (depending on current color mode)
   * @param v3 blue or brightness value (depending on current color mode)
   * @param nx direction along the x-axis
   * @param ny direction along the y-axis
   * @param nz direction along the z-axis
   * @see PGraphics#lights()
   * @see PGraphics#ambientLight(float, float, float, float, float, float)
   * @see PGraphics#pointLight(float, float, float, float, float, float)
   * @see PGraphics#spotLight(float, float, float, float, float, float, float, float, float, float, float)
   */
  public void directionalLight(float v1, float v2, float v3,
                               float nx, float ny, float nz) {
    if (recorder != null) recorder.directionalLight(v1, v2, v3, nx, ny, nz);
    g.directionalLight(v1, v2, v3, nx, ny, nz);
  }


  /**
   * ( begin auto-generated from pointLight.xml )
   *
   * Adds a point light. Lights need to be included in the <b>draw()</b> to
   * remain persistent in a looping program. Placing them in the
   * <b>setup()</b> of a looping program will cause them to only have an
   * effect the first time through the loop. The affect of the <b>v1</b>,
   * <b>v2</b>, and <b>v3</b> parameters is determined by the current color
   * mode. The <b>x</b>, <b>y</b>, and <b>z</b> parameters set the position
   * of the light.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:lights
   * @usage web_application
   * @param v1 red or hue value (depending on current color mode)
   * @param v2 green or saturation value (depending on current color mode)
   * @param v3 blue or brightness value (depending on current color mode)
   * @param x x-coordinate of the light
   * @param y y-coordinate of the light
   * @param z z-coordinate of the light
   * @see PGraphics#lights()
   * @see PGraphics#directionalLight(float, float, float, float, float, float)
   * @see PGraphics#ambientLight(float, float, float, float, float, float)
   * @see PGraphics#spotLight(float, float, float, float, float, float, float, float, float, float, float)
   */
  public void pointLight(float v1, float v2, float v3,
                         float x, float y, float z) {
    if (recorder != null) recorder.pointLight(v1, v2, v3, x, y, z);
    g.pointLight(v1, v2, v3, x, y, z);
  }


  /**
   * ( begin auto-generated from spotLight.xml )
   *
   * Adds a spot light. Lights need to be included in the <b>draw()</b> to
   * remain persistent in a looping program. Placing them in the
   * <b>setup()</b> of a looping program will cause them to only have an
   * effect the first time through the loop. The affect of the <b>v1</b>,
   * <b>v2</b>, and <b>v3</b> parameters is determined by the current color
   * mode. The <b>x</b>, <b>y</b>, and <b>z</b> parameters specify the
   * position of the light and <b>nx</b>, <b>ny</b>, <b>nz</b> specify the
   * direction or light. The <b>angle</b> parameter affects angle of the
   * spotlight cone.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:lights
   * @usage web_application
   * @param v1 red or hue value (depending on current color mode)
   * @param v2 green or saturation value (depending on current color mode)
   * @param v3 blue or brightness value (depending on current color mode)
   * @param x x-coordinate of the light
   * @param y y-coordinate of the light
   * @param z z-coordinate of the light
   * @param nx direction along the x axis
   * @param ny direction along the y axis
   * @param nz direction along the z axis
   * @param angle angle of the spotlight cone
   * @param concentration exponent determining the center bias of the cone
   * @see PGraphics#lights()
   * @see PGraphics#directionalLight(float, float, float, float, float, float)
   * @see PGraphics#pointLight(float, float, float, float, float, float)
   * @see PGraphics#ambientLight(float, float, float, float, float, float)
   */
  public void spotLight(float v1, float v2, float v3,
                        float x, float y, float z,
                        float nx, float ny, float nz,
                        float angle, float concentration) {
    if (recorder != null) recorder.spotLight(v1, v2, v3, x, y, z, nx, ny, nz, angle, concentration);
    g.spotLight(v1, v2, v3, x, y, z, nx, ny, nz, angle, concentration);
  }


  /**
   * ( begin auto-generated from lightFalloff.xml )
   *
   * Sets the falloff rates for point lights, spot lights, and ambient
   * lights. The parameters are used to determine the falloff with the
   * following equation:<br /><br />d = distance from light position to
   * vertex position<br />falloff = 1 / (CONSTANT + d * LINEAR + (d*d) *
   * QUADRATIC)<br /><br />Like <b>fill()</b>, it affects only the elements
   * which are created after it in the code. The default value if
   * <b>LightFalloff(1.0, 0.0, 0.0)</b>. Thinking about an ambient light with
   * a falloff can be tricky. It is used, for example, if you wanted a region
   * of your scene to be lit ambiently one color and another region to be lit
   * ambiently by another color, you would use an ambient light with location
   * and falloff. You can think of it as a point light that doesn't care
   * which direction a surface is facing.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:lights
   * @usage web_application
   * @param constant constant value or determining falloff
   * @param linear linear value for determining falloff
   * @param quadratic quadratic value for determining falloff
   * @see PGraphics#lights()
   * @see PGraphics#ambientLight(float, float, float, float, float, float)
   * @see PGraphics#pointLight(float, float, float, float, float, float)
   * @see PGraphics#spotLight(float, float, float, float, float, float, float, float, float, float, float)
   * @see PGraphics#lightSpecular(float, float, float)
   */
  public void lightFalloff(float constant, float linear, float quadratic) {
    if (recorder != null) recorder.lightFalloff(constant, linear, quadratic);
    g.lightFalloff(constant, linear, quadratic);
  }


  /**
   * ( begin auto-generated from lightSpecular.xml )
   *
   * Sets the specular color for lights. Like <b>fill()</b>, it affects only
   * the elements which are created after it in the code. Specular refers to
   * light which bounces off a surface in a perferred direction (rather than
   * bouncing in all directions like a diffuse light) and is used for
   * creating highlights. The specular quality of a light interacts with the
   * specular material qualities set through the <b>specular()</b> and
   * <b>shininess()</b> functions.
   *
   * ( end auto-generated )
   *
   * @webref lights_camera:lights
   * @usage web_application
   * @param v1 red or hue value (depending on current color mode)
   * @param v2 green or saturation value (depending on current color mode)
   * @param v3 blue or brightness value (depending on current color mode)
   * @see PGraphics#specular(float, float, float)
   * @see PGraphics#lights()
   * @see PGraphics#ambientLight(float, float, float, float, float, float)
   * @see PGraphics#pointLight(float, float, float, float, float, float)
   * @see PGraphics#spotLight(float, float, float, float, float, float, float, float, float, float, float)
   */
  public void lightSpecular(float v1, float v2, float v3) {
    if (recorder != null) recorder.lightSpecular(v1, v2, v3);
    g.lightSpecular(v1, v2, v3);
  }


  /**
   * ( begin auto-generated from background.xml )
   *
   * The <b>background()</b> function sets the color used for the background
   * of the Processing window. The default background is light gray. In the
   * <b>draw()</b> function, the background color is used to clear the
   * display window at the beginning of each frame.
   * <br/> <br/>
   * An image can also be used as the background for a sketch, however its
   * width and height must be the same size as the sketch window. To resize
   * an image 'b' to the size of the sketch window, use b.resize(width, height).
   * <br/> <br/>
   * Images used as background will ignore the current <b>tint()</b> setting.
   * <br/> <br/>
   * It is not possible to use transparency (alpha) in background colors with
   * the main drawing surface, however they will work properly with <b>createGraphics()</b>.
   *
   * ( end auto-generated )
   *
   * <h3>Advanced</h3>
   * <p>Clear the background with a color that includes an alpha value. This can
   * only be used with objects created by createGraphics(), because the main
   * drawing surface cannot be set transparent.</p>
   * <p>It might be tempting to use this function to partially clear the screen
   * on each frame, however that's not how this function works. When calling
   * background(), the pixels will be replaced with pixels that have that level
   * of transparency. To do a semi-transparent overlay, use fill() with alpha
   * and draw a rectangle.</p>
   *
   * @webref color:setting
   * @usage web_application
   * @param rgb any value of the color datatype
   * @see PGraphics#stroke(float)
   * @see PGraphics#fill(float)
   * @see PGraphics#tint(float)
   * @see PGraphics#colorMode(int)
   */
  public void background(int rgb) {
    if (recorder != null) recorder.background(rgb);
    g.background(rgb);
  }


  /**
   * @param alpha opacity of the background
   */
  public void background(int rgb, float alpha) {
    if (recorder != null) recorder.background(rgb, alpha);
    g.background(rgb, alpha);
  }


  /**
   * @param gray specifies a value between white and black
   */
  public void background(float gray) {
    if (recorder != null) recorder.background(gray);
    g.background(gray);
  }


  public void background(float gray, float alpha) {
    if (recorder != null) recorder.background(gray, alpha);
    g.background(gray, alpha);
  }


  /**
   * @param v1 red or hue value (depending on the current color mode)
   * @param v2 green or saturation value (depending on the current color mode)
   * @param v3 blue or brightness value (depending on the current color mode)
   */
  public void background(float v1, float v2, float v3) {
    if (recorder != null) recorder.background(v1, v2, v3);
    g.background(v1, v2, v3);
  }


  public void background(float v1, float v2, float v3, float alpha) {
    if (recorder != null) recorder.background(v1, v2, v3, alpha);
    g.background(v1, v2, v3, alpha);
  }


  /**
   * @webref color:setting
   */
  public void clear() {
    if (recorder != null) recorder.clear();
    g.clear();
  }


  /**
   * Takes an RGB or ARGB image and sets it as the background.
   * The width and height of the image must be the same size as the sketch.
   * Use image.resize(width, height) to make short work of such a task.<br/>
   * <br/>
   * Note that even if the image is set as RGB, the high 8 bits of each pixel
   * should be set opaque (0xFF000000) because the image data will be copied
   * directly to the screen, and non-opaque background images may have strange
   * behavior. Use image.filter(OPAQUE) to handle this easily.<br/>
   * <br/>
   * When using 3D, this will also clear the zbuffer (if it exists).
   *
   * @param image PImage to set as background (must be same size as the sketch window)
   */
  public void background(PImage image) {
    if (recorder != null) recorder.background(image);
    g.background(image);
  }


  /**
   * ( begin auto-generated from colorMode.xml )
   *
   * Changes the way Processing interprets color data. By default, the
   * parameters for <b>fill()</b>, <b>stroke()</b>, <b>background()</b>, and
   * <b>color()</b> are defined by values between 0 and 255 using the RGB
   * color model. The <b>colorMode()</b> function is used to change the
   * numerical range used for specifying colors and to switch color systems.
   * For example, calling <b>colorMode(RGB, 1.0)</b> will specify that values
   * are specified between 0 and 1. The limits for defining colors are
   * altered by setting the parameters range1, range2, range3, and range 4.
   *
   * ( end auto-generated )
   *
   * @webref color:setting
   * @usage web_application
   * @param mode Either RGB or HSB, corresponding to Red/Green/Blue and Hue/Saturation/Brightness
   * @see PGraphics#background(float)
   * @see PGraphics#fill(float)
   * @see PGraphics#stroke(float)
   */
  public void colorMode(int mode) {
    if (recorder != null) recorder.colorMode(mode);
    g.colorMode(mode);
  }


  /**
   * @param max range for all color elements
   */
  public void colorMode(int mode, float max) {
    if (recorder != null) recorder.colorMode(mode, max);
    g.colorMode(mode, max);
  }


  /**
   * @param max1 range for the red or hue depending on the current color mode
   * @param max2 range for the green or saturation depending on the current color mode
   * @param max3 range for the blue or brightness depending on the current color mode
   */
  public void colorMode(int mode, float max1, float max2, float max3) {
    if (recorder != null) recorder.colorMode(mode, max1, max2, max3);
    g.colorMode(mode, max1, max2, max3);
  }


  /**
   * @param maxA range for the alpha
   */
  public void colorMode(int mode,
                        float max1, float max2, float max3, float maxA) {
    if (recorder != null) recorder.colorMode(mode, max1, max2, max3, maxA);
    g.colorMode(mode, max1, max2, max3, maxA);
  }


  /**
   * ( begin auto-generated from alpha.xml )
   *
   * Extracts the alpha value from a color.
   *
   * ( end auto-generated )
   * @webref color:creating_reading
   * @usage web_application
   * @param rgb any value of the color datatype
   * @see PGraphics#red(int)
   * @see PGraphics#green(int)
   * @see PGraphics#blue(int)
   * @see PGraphics#hue(int)
   * @see PGraphics#saturation(int)
   * @see PGraphics#brightness(int)
   */
  public final float alpha(int rgb) {
    return g.alpha(rgb);
  }


  /**
   * ( begin auto-generated from red.xml )
   *
   * Extracts the red value from a color, scaled to match current
   * <b>colorMode()</b>. This value is always returned as a  float so be
   * careful not to assign it to an int value.<br /><br />The red() function
   * is easy to use and undestand, but is slower than another technique. To
   * achieve the same results when working in <b>colorMode(RGB, 255)</b>, but
   * with greater speed, use the &gt;&gt; (right shift) operator with a bit
   * mask. For example, the following two lines of code are equivalent:<br
   * /><pre>float r1 = red(myColor);<br />float r2 = myColor &gt;&gt; 16
   * &amp; 0xFF;</pre>
   *
   * ( end auto-generated )
   *
   * @webref color:creating_reading
   * @usage web_application
   * @param rgb any value of the color datatype
   * @see PGraphics#green(int)
   * @see PGraphics#blue(int)
   * @see PGraphics#alpha(int)
   * @see PGraphics#hue(int)
   * @see PGraphics#saturation(int)
   * @see PGraphics#brightness(int)
   * @see_external rightshift
   */
  public final float red(int rgb) {
    return g.red(rgb);
  }


  /**
   * ( begin auto-generated from green.xml )
   *
   * Extracts the green value from a color, scaled to match current
   * <b>colorMode()</b>. This value is always returned as a  float so be
   * careful not to assign it to an int value.<br /><br />The <b>green()</b>
   * function is easy to use and undestand, but is slower than another
   * technique. To achieve the same results when working in <b>colorMode(RGB,
   * 255)</b>, but with greater speed, use the &gt;&gt; (right shift)
   * operator with a bit mask. For example, the following two lines of code
   * are equivalent:<br /><pre>float r1 = green(myColor);<br />float r2 =
   * myColor &gt;&gt; 8 &amp; 0xFF;</pre>
   *
   * ( end auto-generated )
   *
   * @webref color:creating_reading
   * @usage web_application
   * @param rgb any value of the color datatype
   * @see PGraphics#red(int)
   * @see PGraphics#blue(int)
   * @see PGraphics#alpha(int)
   * @see PGraphics#hue(int)
   * @see PGraphics#saturation(int)
   * @see PGraphics#brightness(int)
   * @see_external rightshift
   */
  public final float green(int rgb) {
    return g.green(rgb);
  }


  /**
   * ( begin auto-generated from blue.xml )
   *
   * Extracts the blue value from a color, scaled to match current
   * <b>colorMode()</b>. This value is always returned as a  float so be
   * careful not to assign it to an int value.<br /><br />The <b>blue()</b>
   * function is easy to use and undestand, but is slower than another
   * technique. To achieve the same results when working in <b>colorMode(RGB,
   * 255)</b>, but with greater speed, use a bit mask to remove the other
   * color components. For example, the following two lines of code are
   * equivalent:<br /><pre>float r1 = blue(myColor);<br />float r2 = myColor
   * &amp; 0xFF;</pre>
   *
   * ( end auto-generated )
   *
   * @webref color:creating_reading
   * @usage web_application
   * @param rgb any value of the color datatype
   * @see PGraphics#red(int)
   * @see PGraphics#green(int)
   * @see PGraphics#alpha(int)
   * @see PGraphics#hue(int)
   * @see PGraphics#saturation(int)
   * @see PGraphics#brightness(int)
   * @see_external rightshift
   */
  public final float blue(int rgb) {
    return g.blue(rgb);
  }


  /**
   * ( begin auto-generated from hue.xml )
   *
   * Extracts the hue value from a color.
   *
   * ( end auto-generated )
   * @webref color:creating_reading
   * @usage web_application
   * @param rgb any value of the color datatype
   * @see PGraphics#red(int)
   * @see PGraphics#green(int)
   * @see PGraphics#blue(int)
   * @see PGraphics#alpha(int)
   * @see PGraphics#saturation(int)
   * @see PGraphics#brightness(int)
   */
  public final float hue(int rgb) {
    return g.hue(rgb);
  }


  /**
   * ( begin auto-generated from saturation.xml )
   *
   * Extracts the saturation value from a color.
   *
   * ( end auto-generated )
   * @webref color:creating_reading
   * @usage web_application
   * @param rgb any value of the color datatype
   * @see PGraphics#red(int)
   * @see PGraphics#green(int)
   * @see PGraphics#blue(int)
   * @see PGraphics#alpha(int)
   * @see PGraphics#hue(int)
   * @see PGraphics#brightness(int)
   */
  public final float saturation(int rgb) {
    return g.saturation(rgb);
  }


  /**
   * ( begin auto-generated from brightness.xml )
   *
   * Extracts the brightness value from a color.
   *
   * ( end auto-generated )
   *
   * @webref color:creating_reading
   * @usage web_application
   * @param rgb any value of the color datatype
   * @see PGraphics#red(int)
   * @see PGraphics#green(int)
   * @see PGraphics#blue(int)
   * @see PGraphics#alpha(int)
   * @see PGraphics#hue(int)
   * @see PGraphics#saturation(int)
   */
  public final float brightness(int rgb) {
    return g.brightness(rgb);
  }


  /**
   * @nowebref
   * Interpolate between two colors. Like lerp(), but for the
   * individual color components of a color supplied as an int value.
   */
  static public int lerpColor(int c1, int c2, float amt, int mode) {
    return PGraphics.lerpColor(c1, c2, amt, mode);
  }


  /**
   * Display a warning that the specified method is only available with 3D.
   * @param method The method name (no parentheses)
   */
  static public void showDepthWarning(String method) {
    PGraphics.showDepthWarning(method);
  }


  /**
   * Display a warning that the specified method that takes x, y, z parameters
   * can only be used with x and y parameters in this renderer.
   * @param method The method name (no parentheses)
   */
  static public void showDepthWarningXYZ(String method) {
    PGraphics.showDepthWarningXYZ(method);
  }


  /**
   * Display a warning that the specified method is simply unavailable.
   */
  static public void showMethodWarning(String method) {
    PGraphics.showMethodWarning(method);
  }


  /**
   * Error that a particular variation of a method is unavailable (even though
   * other variations are). For instance, if vertex(x, y, u, v) is not
   * available, but vertex(x, y) is just fine.
   */
  static public void showVariationWarning(String str) {
    PGraphics.showVariationWarning(str);
  }


  /**
   * Display a warning that the specified method is not implemented, meaning
   * that it could be either a completely missing function, although other
   * variations of it may still work properly.
   */
  static public void showMissingWarning(String method) {
    PGraphics.showMissingWarning(method);
  }


  /**
   * ( begin auto-generated from PImage_get.xml )
   *
   * Reads the color of any pixel or grabs a section of an image. If no
   * parameters are specified, the entire image is returned. Use the <b>x</b>
   * and <b>y</b> parameters to get the value of one pixel. Get a section of
   * the display window by specifying an additional <b>width</b> and
   * <b>height</b> parameter. When getting an image, the <b>x</b> and
   * <b>y</b> parameters define the coordinates for the upper-left corner of
   * the image, regardless of the current <b>imageMode()</b>.<br />
   * <br />
   * If the pixel requested is outside of the image window, black is
   * returned. The numbers returned are scaled according to the current color
   * ranges, but only RGB values are returned by this function. For example,
   * even though you may have drawn a shape with <b>colorMode(HSB)</b>, the
   * numbers returned will be in RGB format.<br />
   * <br />
   * Getting the color of a single pixel with <b>get(x, y)</b> is easy, but
   * not as fast as grabbing the data directly from <b>pixels[]</b>. The
   * equivalent statement to <b>get(x, y)</b> using <b>pixels[]</b> is
   * <b>pixels[y*width+x]</b>. See the reference for <b>pixels[]</b> for more information.
   *
   * ( end auto-generated )
   *
   * <h3>Advanced</h3>
   * Returns an ARGB "color" type (a packed 32 bit int with the color.
   * If the coordinate is outside the image, zero is returned
   * (black, but completely transparent).
   * <P>
   * If the image is in RGB format (i.e. on a PVideo object),
   * the value will get its high bits set, just to avoid cases where
   * they haven't been set already.
   * <P>
   * If the image is in ALPHA format, this returns a white with its
   * alpha value set.
   * <P>
   * This function is included primarily for beginners. It is quite
   * slow because it has to check to see if the x, y that was provided
   * is inside the bounds, and then has to check to see what image
   * type it is. If you want things to be more efficient, access the
   * pixels[] array directly.
   *
   * @webref image:pixels
   * @brief Reads the color of any pixel or grabs a rectangle of pixels
   * @usage web_application
   * @param x x-coordinate of the pixel
   * @param y y-coordinate of the pixel
   * @see PApplet#set(int, int, int)
   * @see PApplet#pixels
   * @see PApplet#copy(PImage, int, int, int, int, int, int, int, int)
   */
  public int get(int x, int y) {
    return g.get(x, y);
  }


  /**
   * @param w width of pixel rectangle to get
   * @param h height of pixel rectangle to get
   */
  public PImage get(int x, int y, int w, int h) {
    return g.get(x, y, w, h);
  }


  /**
   * Returns a copy of this PImage. Equivalent to get(0, 0, width, height).
   * Deprecated, just use copy() instead.
   */
  public PImage get() {
    return g.get();
  }


  public PImage copy() {
    return g.copy();
  }


  /**
   * ( begin auto-generated from PImage_set.xml )
   *
   * Changes the color of any pixel or writes an image directly into the
   * display window.<br />
   * <br />
   * The <b>x</b> and <b>y</b> parameters specify the pixel to change and the
   * <b>color</b> parameter specifies the color value. The color parameter is
   * affected by the current color mode (the default is RGB values from 0 to
   * 255). When setting an image, the <b>x</b> and <b>y</b> parameters define
   * the coordinates for the upper-left corner of the image, regardless of
   * the current <b>imageMode()</b>.
   * <br /><br />
   * Setting the color of a single pixel with <b>set(x, y)</b> is easy, but
   * not as fast as putting the data directly into <b>pixels[]</b>. The
   * equivalent statement to <b>set(x, y, #000000)</b> using <b>pixels[]</b>
   * is <b>pixels[y*width+x] = #000000</b>. See the reference for
   * <b>pixels[]</b> for more information.
   *
   * ( end auto-generated )
   *
   * @webref image:pixels
   * @brief writes a color to any pixel or writes an image into another
   * @usage web_application
   * @param x x-coordinate of the pixel
   * @param y y-coordinate of the pixel
   * @param c any value of the color datatype
   * @see PImage#get(int, int, int, int)
   * @see PImage#pixels
   * @see PImage#copy(PImage, int, int, int, int, int, int, int, int)
   */
  public void set(int x, int y, int c) {
    if (recorder != null) recorder.set(x, y, c);
    g.set(x, y, c);
  }


  /**
   * <h3>Advanced</h3>
   * Efficient method of drawing an image's pixels directly to this surface.
   * No variations are employed, meaning that any scale, tint, or imageMode
   * settings will be ignored.
   *
   * @param img image to copy into the original image
   */
  public void set(int x, int y, PImage img) {
    if (recorder != null) recorder.set(x, y, img);
    g.set(x, y, img);
  }


  /**
   * ( begin auto-generated from PImage_mask.xml )
   *
   * Masks part of an image from displaying by loading another image and
   * using it as an alpha channel. This mask image should only contain
   * grayscale data, but only the blue color channel is used. The mask image
   * needs to be the same size as the image to which it is applied.<br />
   * <br />
   * In addition to using a mask image, an integer array containing the alpha
   * channel data can be specified directly. This method is useful for
   * creating dynamically generated alpha masks. This array must be of the
   * same length as the target image's pixels array and should contain only
   * grayscale data of values between 0-255.
   *
   * ( end auto-generated )
   *
   * <h3>Advanced</h3>
   *
   * Set alpha channel for an image. Black colors in the source
   * image will make the destination image completely transparent,
   * and white will make things fully opaque. Gray values will
   * be in-between steps.
   * <P>
   * Strictly speaking the "blue" value from the source image is
   * used as the alpha color. For a fully grayscale image, this
   * is correct, but for a color image it's not 100% accurate.
   * For a more accurate conversion, first use filter(GRAY)
   * which will make the image into a "correct" grayscale by
   * performing a proper luminance-based conversion.
   *
   * @webref pimage:method
   * @usage web_application
   * @param img image to use as the mask
   * @brief Masks part of an image with another image as an alpha channel
   */
  public void mask(PImage img) {
    if (recorder != null) recorder.mask(img);
    g.mask(img);
  }


  public void filter(int kind) {
    if (recorder != null) recorder.filter(kind);
    g.filter(kind);
  }


  /**
   * ( begin auto-generated from PImage_filter.xml )
   *
   * Filters an image as defined by one of the following modes:<br /><br
   * />THRESHOLD - converts the image to black and white pixels depending if
   * they are above or below the threshold defined by the level parameter.
   * The level must be between 0.0 (black) and 1.0(white). If no level is
   * specified, 0.5 is used.<br />
   * <br />
   * GRAY - converts any colors in the image to grayscale equivalents<br />
   * <br />
   * INVERT - sets each pixel to its inverse value<br />
   * <br />
   * POSTERIZE - limits each channel of the image to the number of colors
   * specified as the level parameter<br />
   * <br />
   * BLUR - executes a Guassian blur with the level parameter specifying the
   * extent of the blurring. If no level parameter is used, the blur is
   * equivalent to Guassian blur of radius 1<br />
   * <br />
   * OPAQUE - sets the alpha channel to entirely opaque<br />
   * <br />
   * ERODE - reduces the light areas with the amount defined by the level
   * parameter<br />
   * <br />
   * DILATE - increases the light areas with the amount defined by the level parameter
   *
   * ( end auto-generated )
   *
   * <h3>Advanced</h3>
   * Method to apply a variety of basic filters to this image.
   * <P>
   * <UL>
   * <LI>filter(BLUR) provides a basic blur.
   * <LI>filter(GRAY) converts the image to grayscale based on luminance.
   * <LI>filter(INVERT) will invert the color components in the image.
   * <LI>filter(OPAQUE) set all the high bits in the image to opaque
   * <LI>filter(THRESHOLD) converts the image to black and white.
   * <LI>filter(DILATE) grow white/light areas
   * <LI>filter(ERODE) shrink white/light areas
   * </UL>
   * Luminance conversion code contributed by
   * <A HREF="http://www.toxi.co.uk">toxi</A>
   * <P/>
   * Gaussian blur code contributed by
   * <A HREF="http://incubator.quasimondo.com">Mario Klingemann</A>
   *
   * @webref image:pixels
   * @brief Converts the image to grayscale or black and white
   * @usage web_application
   * @param kind Either THRESHOLD, GRAY, OPAQUE, INVERT, POSTERIZE, BLUR, ERODE, or DILATE
   * @param param unique for each, see above
   */
  public void filter(int kind, float param) {
    if (recorder != null) recorder.filter(kind, param);
    g.filter(kind, param);
  }


  /**
   * ( begin auto-generated from PImage_copy.xml )
   *
   * Copies a region of pixels from one image into another. If the source and
   * destination regions aren't the same size, it will automatically resize
   * source pixels to fit the specified target region. No alpha information
   * is used in the process, however if the source image has an alpha channel
   * set, it will be copied as well.
   * <br /><br />
   * As of release 0149, this function ignores <b>imageMode()</b>.
   *
   * ( end auto-generated )
   *
   * @webref image:pixels
   * @brief Copies the entire image
   * @usage web_application
   * @param sx X coordinate of the source's upper left corner
   * @param sy Y coordinate of the source's upper left corner
   * @param sw source image width
   * @param sh source image height
   * @param dx X coordinate of the destination's upper left corner
   * @param dy Y coordinate of the destination's upper left corner
   * @param dw destination image width
   * @param dh destination image height
   * @see PGraphics#alpha(int)
   * @see PImage#blend(PImage, int, int, int, int, int, int, int, int, int)
   */
  public void copy(int sx, int sy, int sw, int sh,
                   int dx, int dy, int dw, int dh) {
    if (recorder != null) recorder.copy(sx, sy, sw, sh, dx, dy, dw, dh);
    g.copy(sx, sy, sw, sh, dx, dy, dw, dh);
  }


/**
 * @param src an image variable referring to the source image.
 */
  public void copy(PImage src,
                   int sx, int sy, int sw, int sh,
                   int dx, int dy, int dw, int dh) {
    if (recorder != null) recorder.copy(src, sx, sy, sw, sh, dx, dy, dw, dh);
    g.copy(src, sx, sy, sw, sh, dx, dy, dw, dh);
  }


  public void blend(int sx, int sy, int sw, int sh,
                    int dx, int dy, int dw, int dh, int mode) {
    if (recorder != null) recorder.blend(sx, sy, sw, sh, dx, dy, dw, dh, mode);
    g.blend(sx, sy, sw, sh, dx, dy, dw, dh, mode);
  }


  /**
   * ( begin auto-generated from PImage_blend.xml )
   *
   * Blends a region of pixels into the image specified by the <b>img</b>
   * parameter. These copies utilize full alpha channel support and a choice
   * of the following modes to blend the colors of source pixels (A) with the
   * ones of pixels in the destination image (B):<br />
   * <br />
   * BLEND - linear interpolation of colours: C = A*factor + B<br />
   * <br />
   * ADD - additive blending with white clip: C = min(A*factor + B, 255)<br />
   * <br />
   * SUBTRACT - subtractive blending with black clip: C = max(B - A*factor,
   * 0)<br />
   * <br />
   * DARKEST - only the darkest colour succeeds: C = min(A*factor, B)<br />
   * <br />
   * LIGHTEST - only the lightest colour succeeds: C = max(A*factor, B)<br />
   * <br />
   * DIFFERENCE - subtract colors from underlying image.<br />
   * <br />
   * EXCLUSION - similar to DIFFERENCE, but less extreme.<br />
   * <br />
   * MULTIPLY - Multiply the colors, result will always be darker.<br />
   * <br />
   * SCREEN - Opposite multiply, uses inverse values of the colors.<br />
   * <br />
   * OVERLAY - A mix of MULTIPLY and SCREEN. Multiplies dark values,
   * and screens light values.<br />
   * <br />
   * HARD_LIGHT - SCREEN when greater than 50% gray, MULTIPLY when lower.<br />
   * <br />
   * SOFT_LIGHT - Mix of DARKEST and LIGHTEST.
   * Works like OVERLAY, but not as harsh.<br />
   * <br />
   * DODGE - Lightens light tones and increases contrast, ignores darks.
   * Called "Color Dodge" in Illustrator and Photoshop.<br />
   * <br />
   * BURN - Darker areas are applied, increasing contrast, ignores lights.
   * Called "Color Burn" in Illustrator and Photoshop.<br />
   * <br />
   * All modes use the alpha information (highest byte) of source image
   * pixels as the blending factor. If the source and destination regions are
   * different sizes, the image will be automatically resized to match the
   * destination size. If the <b>srcImg</b> parameter is not used, the
   * display window is used as the source image.<br />
   * <br />
   * As of release 0149, this function ignores <b>imageMode()</b>.
   *
   * ( end auto-generated )
   *
   * @webref image:pixels
   * @brief  Copies a pixel or rectangle of pixels using different blending modes
   * @param src an image variable referring to the source image
   * @param sx X coordinate of the source's upper left corner
   * @param sy Y coordinate of the source's upper left corner
   * @param sw source image width
   * @param sh source image height
   * @param dx X coordinate of the destinations's upper left corner
   * @param dy Y coordinate of the destinations's upper left corner
   * @param dw destination image width
   * @param dh destination image height
   * @param mode Either BLEND, ADD, SUBTRACT, LIGHTEST, DARKEST, DIFFERENCE, EXCLUSION, MULTIPLY, SCREEN, OVERLAY, HARD_LIGHT, SOFT_LIGHT, DODGE, BURN
   *
   * @see PApplet#alpha(int)
   * @see PImage#copy(PImage, int, int, int, int, int, int, int, int)
   * @see PImage#blendColor(int,int,int)
   */
  public void blend(PImage src,
                    int sx, int sy, int sw, int sh,
                    int dx, int dy, int dw, int dh, int mode) {
    if (recorder != null) recorder.blend(src, sx, sy, sw, sh, dx, dy, dw, dh, mode);
    g.blend(src, sx, sy, sw, sh, dx, dy, dw, dh, mode);
  }
}
