LJ/examples/Processing/squares/squares.pde

import redis.clients.jedis.Jedis;
import java.util.ArrayList;

ArrayList<PVector> points = new ArrayList<PVector>();

int rgb2int(int r, int g, int b) {
  return (r << 16) + (g << 8) + b;
}

void setup() {
  size(400, 200); 
  noStroke();
  rectMode(CENTER);
}

void draw() {
  background(51); 
  stroke(255, 204);
  
  // Draw first rectangle using lines
  noFill();

  int rect1Width = mouseY/2+10;
  int rect1Height = mouseY/2+10;
  line(mouseX-rect1Width/2, height/2-rect1Height/2, mouseX+rect1Width/2, height/2-rect1Height/2);
  line(mouseX+rect1Width/2, height/2-rect1Height/2, mouseX+rect1Width/2, height/2+rect1Height/2);
  line(mouseX+rect1Width/2, height/2+rect1Height/2, mouseX-rect1Width/2, height/2+rect1Height/2);
  line(mouseX-rect1Width/2, height/2+rect1Height/2, mouseX-rect1Width/2, height/2-rect1Height/2);
  points.add(new PVector(mouseX-rect1Width/2, height/2-rect1Height/2));
  points.add(new PVector(mouseX+rect1Width/2, height/2-rect1Height/2));
  points.add(new PVector(mouseX+rect1Width/2, height/2+rect1Height/2));
  points.add(new PVector(mouseX-rect1Width/2, height/2+rect1Height/2));
  points.add(new PVector(mouseX-rect1Width/2, height/2-rect1Height/2));
  // Draw second rectangle using lines
  int inverseX = width-mouseX;
  int inverseY = height-mouseY;
  int rect2Width = (inverseY/2)+10;
  int rect2Height = (inverseY/2)+10;
  line(inverseX-rect2Width/2, height/2-rect2Height/2, inverseX+rect2Width/2, height/2-rect2Height/2);
  line(inverseX+rect2Width/2, height/2-rect2Height/2, inverseX+rect2Width/2, height/2+rect2Height/2);
  line(inverseX+rect2Width/2, height/2+rect2Height/2, inverseX-rect2Width/2, height/2+rect2Height/2);
  line(inverseX-rect2Width/2, height/2+rect2Height/2, inverseX-rect2Width/2, height/2-rect2Height/2);
  points.add(new PVector(inverseX-rect2Width/2, height/2-rect2Height/2));
  points.add(new PVector(inverseX+rect2Width/2, height/2-rect2Height/2));
  points.add(new PVector(inverseX+rect2Width/2, height/2+rect2Height/2));
  points.add(new PVector(inverseX-rect2Width/2, height/2+rect2Height/2));
  points.add(new PVector(inverseX-rect2Width/2, height/2-rect2Height/2));
  if (points.size() > 0) {
    println("point size : "+points.size());
    println("pointlist");
    String pointList = "["; // initialize the point list string
    for (int i = 0; i < points.size(); i++) {
      PVector p = points.get(i);
      int[] rgb = {255, 255, 255};
      pointList += "(" + p.x + "," + p.y + "," + rgb2int(rgb[0], rgb[1], rgb[2]) + "),";
    }
    points.clear();
    pointList = pointList.substring(0, pointList.length() - 1); // remove the last comma
    pointList += "]"; // close the point list string
    
    System.out.println(pointList);

    Jedis jedis = new Jedis("localhost");
    jedis.set("/pl/0/0", pointList);
    jedis.close();
  }
}