using System;
using System.ComponentModel;
using System.Drawing;

namespace WindowsFormsApplication1
{
    class MatrixFilter : Filters
    {
        protected float[,] kernel = null;
        protected MatrixFilter() { }
        public MatrixFilter(float[,] kernel)
        {
            this.kernel = kernel;
        }
        protected override Color calculateNewPixelColor(Bitmap sourceImage, int x, int y)
        {
            int radiusX = kernel.GetLength(0) / 2;
            int radiusY = kernel.GetLength(1) / 2;
            float resultR = 0;
            float resultG = 0;
            float resultB = 0;
            for (int l = - radiusY; l <= radiusY; l++)
            {
                for (int k = - radiusX; k <= radiusX; k++)
                {
                    int idX = Clamp(x + k, 0, sourceImage.Width - 1);
                    int idY = Clamp(y + l, 0, sourceImage.Height - 1);
                    Color neighborColor = sourceImage.GetPixel(idX, idY);
                    resultR += neighborColor.R * kernel[k + radiusX, l + radiusY];
                    resultG += neighborColor.G * kernel[k + radiusX, l + radiusY];
                    resultB += neighborColor.B * kernel[k + radiusX, l + radiusY];
                }
            }
            return Color.FromArgb(
                        Clamp((int)resultR, 0, 255),
                        Clamp((int)resultG, 0, 255),
                        Clamp((int)resultB, 0, 255)
                        );
        }

        protected override void CalcInten(Bitmap sourceImage)
        {
            //throw new NotImplementedException();
        }
        protected override void CalcAvg(Bitmap sourceImage)
        {
            //throw new NotImplementedException();
        }

        protected override Bitmap Open(Bitmap sourceImage, BackgroundWorker worker)
        {
            return sourceImage;
        }
        protected override Bitmap Tophat(Bitmap sourceImage, Bitmap resultImage, BackgroundWorker worker)
        {
            return sourceImage;
        }
    }
}