Hi:

My goal is to have animation running on one screen, and have onscreen controls (sliders, buttons) composited on top of the same animation on the second screen.

I found this sketch where you can have two processing windows open at the same time through a single sketch. I'm wondering how I can copy the animation from the first window and display it in the second, essentially running a mirror without actually running the same code twice. I tried to do it with PImage with no luck.

here is what i found, thanks for the help:

private static secondCanvas sCanvas;
private static secondApplet sApplet;

import java.awt.*;
import java.awt.event.*;
import processing.core.*;

int xPos = 0;
int yPos = 0;

void setup() {
size(400, 400);
smooth();
background(0);
noStroke();

sApplet = new secondApplet();
sCanvas = new secondCanvas("follower", sApplet, screen.width/2, screen.height/2);
}

void draw() {
background(0);
// fill(200, 100, 0);
// rect(xPos++,0, 100, 100);
// if(xPos >= width) xPos = 0;
  fill(200, 100, 0);
  rect(0, yPos++, 100, 100);
  if(yPos >= height) yPos = 0;
}

public class secondApplet extends PApplet {

public void setup() {
  size(400, 400);
  background(255, 0, 0);
//   frameRate(10);
}

//---------this draws the second window--------------
public void draw() {
  background(0);

  fill(200, 100, 0);
  rect(0, yPos++, 100, 100);
  if(yPos >= height) yPos = 0;
}
}


public class secondCanvas extends Frame {
public secondCanvas(String name, PApplet embed, int x, int y) {
  super(name);

  // add the PApplet to the Frame
  setLayout(new BorderLayout());
  add(embed, BorderLayout.CENTER);

  // ensures that the animation thread is started and
  // that other internal variables are properly set.
  embed.init();

  // add an exit on close listener
  addWindowListener(new WindowAdapter() {
    public void windowClosing(WindowEvent evt) {
      // exit the application
      System.exit(0);
    }
  }
  );

  setSize(400, 400);
  setLocation(x, y);
  setVisible(true);

}
}

I figured out a way to do this, please see this thread:
http://processing.org/discourse/yabb2/?num=1267728559