Create more than one window of a single sketch in Processing

Question

How to create more than one window of a single sketch in Processing?

Actually I want to detect and track a particular color (through webcam) in one window and display the detected co-ordinates as a point in another window.Till now I'm able to display the points in the same window where detecting it.But I want to split it into two different windows.

Answer 1

You need to create a new frame and a new PApplet... here's a sample sketch:

import javax.swing.*; 
SecondApplet s;
void setup() {
  size(640, 480);
  PFrame f = new PFrame(width, height);
  frame.setTitle("first window");
  f.setTitle("second window");
  fill(0);
}
void draw() {
  background(255);
  ellipse(mouseX, mouseY, 10, 10);
  s.setGhostCursor(mouseX, mouseY);
}
public class PFrame extends JFrame {
  public PFrame(int width, int height) {
    setBounds(100, 100, width, height);
    s = new SecondApplet();
    add(s);
    s.init();
    show();
  }
}
public class SecondApplet extends PApplet {
  int ghostX, ghostY;
  public void setup() {
    background(0);
    noStroke();
  }

  public void draw() {
    background(50);
    fill(255);
    ellipse(mouseX, mouseY, 10, 10);
    fill(0);
    ellipse(ghostX, ghostY, 10, 10);
  }
  public void setGhostCursor(int ghostX, int ghostY) {
    this.ghostX = ghostX;
    this.ghostY = ghostY;
  }
}