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

Serial myPort;
int xpos = 0;

Capture video;
OpenCV opencv;

void setup() {
  size(640, 480);
  video = new Capture(this, 640/2, 480/2);
  opencv = new OpenCV(this, 640/2, 480/2);
  opencv.loadCascade(OpenCV.CASCADE_FRONTALFACE);  
  myPort = new Serial(this, "/dev/ttyACM0", 9600);

  video.start();
}

void draw() {
  scale(2);
  opencv.loadImage(video);

  image(video, 0, 0 );

  noFill();
  stroke(0, 255, 0);
  strokeWeight(3);
  Rectangle[] faces = opencv.detect();
  if(faces.length > 0) {
    println("Faces detected: " + faces.length);
  
    for(int i = 0; i < faces.length; i++) {
      rect(faces[i].x, faces[i].y, faces[i].width, faces[i].height);
      if(faces[i].x > 1) {
        xpos =  (int) faces[0].x;//int(map(faces[i].x, 0, 320, 0, 100));
        
        if(xpos < 60){
          myPort.write('A');
        } else if(xpos >= 60 && xpos < 120){
          myPort.write('B');
        } else if(xpos >= 120 && xpos < 180){
          myPort.write('C');
        } else if(xpos >= 180 && xpos < 240){
          myPort.write('D');
        } else if(xpos > 240){
          myPort.write('E');
        }
        
        //println(faces[0].x + " - " + xpos); 
      }
   
    }
  }
  
  delay(100);
}

void captureEvent(Capture c) {
  c.read();
}