import gab.opencv.*;
import processing.video.*;
import java.awt.Rectangle;

OpenCV opencv;
Rectangle[] faces;

Capture cam;

//Variables representing the location of center of face
int faceX = 0, faceY = 0;

PImage image; 
void setup() { 

  background(0);
  size(640, 480);

  //initalize webcam
  String[] cameras = Capture.list();
  if (cameras.length == 0) {
    println("There are no cameras available for capture.");
    exit();
  } else {
    println("Available cameras:");
    for (int i = 0; i < cameras.length; i++) {
      println(cameras[i]);
    }
    cam = new Capture(this, cameras[0]);
    cam.start();
  }
} 

void draw() { 
  cam.read();
  getFace();

  //Changes faceX & faceY to the coordinates of the center of the face after each loop of the draw() method
  for (int i = 0; i < faces.length; i++) {
    faceX = faces[i].x + (faces[i].width / 2); 
    faceY = faces[i].y + (faces[i].height / 2);
  }
}

void getFace() {
  opencv = new OpenCV(this, cam);

  opencv.loadCascade(OpenCV.CASCADE_FRONTALFACE);  
  faces = opencv.detect();
}