using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using Emgu.CV;
using Emgu.CV.Structure;
using System.Drawing;

namespace bbiwarg.Images
{
    class PalmImage
    {
        private Image<Gray, Byte> image;
        private int width, height;
        private Contour<Point> contour;
        bool[,] inContour;

        public PalmImage(EdgeImage edgeImage)
        {
            image = edgeImage.getImage().Clone();
            width = image.Width;
            height = image.Height;

            findContours();


            
        }

        private void findContours()
        {
            image = image.Dilate(3);
            contour = image.FindContours(Emgu.CV.CvEnum.CHAIN_APPROX_METHOD.CV_CHAIN_APPROX_NONE, Emgu.CV.CvEnum.RETR_TYPE.CV_RETR_EXTERNAL);

            Contour<Point> maxContour = contour;
            double maxPerimeter = 0;
            int count = 0;
            while (contour != null)
            {
                ++count;
                if (contour.Perimeter > maxPerimeter)
                {
                    maxPerimeter = contour.Perimeter;
                    maxContour = contour;
                }
                contour = contour.HNext;
            }

            Console.WriteLine("numContours: " + count + "\nmaxPerimeter = " + maxPerimeter);

            inContour = new bool[width, height];
            foreach (Point p in maxContour)
                inContour[p.X, p.Y] = true;
        }

        public bool belongsToPalm(int x, int y)
        {
            return inContour[x, y];
        }
    }
}