How to get the x position of the Average Point Tracking so as to control servos on an arduino ?

Hello Guys, I am wondering how can i get the x position of the average point tracking on openkinect lib so as to control servos on a arduino. I am using processing 3, i didn't find any tuto about it, and i'm a novice at it. Here's the code // Daniel Shiffman // Tracking the average location beyond a given depth threshold // Thanks to Dan O'Sullivan

// https://github.com/shiffman/OpenKinect-for-Processing
// http://shiffman.net/p5/kinect/

import org.openkinect.freenect.*;
import org.openkinect.processing.*;

// The kinect stuff is happening in another class
KinectTracker tracker;
Kinect kinect;


void setup() {
  size(640, 520);
  kinect = new Kinect(this);
  tracker = new KinectTracker();
}

void draw() {
  background(255);

  // Run the tracking analysis
  tracker.track();
  // Show the image
  tracker.display();

  // Let's draw the raw location
  PVector v1 = tracker.getPos();
  fill(50, 100, 250, 200);
  noStroke();
  ellipse(v1.x, v1.y, 20, 20);

  // Let's draw the "lerped" location
  PVector v2 = tracker.getLerpedPos();
  fill(100, 250, 50, 200);
  noStroke();
  ellipse(v2.x, v2.y, 20, 20);

  // Display some info
  int t = tracker.getThreshold();
  fill(0);
  text("threshold: " + t + "    " +  "framerate: " + int(frameRate) + "    " +
    "UP increase threshold, DOWN decrease threshold", 10, 500);
}

// Adjust the threshold with key presses
void keyPressed() {
  int t = tracker.getThreshold();
  if (key == CODED) {
    if (keyCode == UP) {
      t+=5;
      tracker.setThreshold(t);
    } else if (keyCode == DOWN) {
      t-=5;
      tracker.setThreshold(t);
    }
  }
}

In a second time i definitely need your help to link processing and arduino. Cheers guys !