using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Emgu.CV;
using Emgu.CV.CvEnum;
using Emgu.CV.Structure;
using Emgu.CV.Cvb;

namespace WindowsFormsApplication3
{

    public partial class Form1 : Form
    {


        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog ok = new OpenFileDialog();
            Image img = null;
            string imgName = "";

            if (ok.ShowDialog() == DialogResult.OK)
            {
                img = Image.FromFile(ok.FileName);
                General.imgName = ok.FileName;
                pictureBox1.Image = img;
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {

            if (General.imgName == "")
            {
                return;
            }

            Image<Bgr, byte> image = new Image<Bgr, byte>(new Bitmap(pictureBox1.Image));
            Image<Gray, Byte> grayImage = image.Convert<Gray, Byte>();


            var eyes = grayImage.DetectHaarCascade(General.eyeCascade)[0];

            foreach (var eye in eyes)
            {
                image.Draw(eye.rect, new Bgr(0, 0, 255), 3);
            }

            if (eyes.Count() == 0)
            {
                imageBox1.Image = image;
                return;
            }

            var faces = grayImage.DetectHaarCascade(General.faceCascade)[0];

            foreach (var face in faces)
            {
                image.Draw(face.rect, new Bgr(255, 255, 255), 10);
            }

            imageBox1.Image = image;

        }
    }
}