public class matrix_b
    {
        System.Drawing.Graphics des;
        System.Drawing.Pen creion_gr = new System.Drawing.Pen(System.Drawing.Color.Gray);
        System.Drawing.SolidBrush pens_r = new System.Drawing.SolidBrush(System.Drawing.Color.Red);
        System.Drawing.SolidBrush pens_v = new System.Drawing.SolidBrush(System.Drawing.Color.Lime);
        System.Drawing.SolidBrush pens_gri = new System.Drawing.SolidBrush(System.Drawing.Color.LightGray);
        int x0;         // pozitia pe x
        int y0;         // pozitia pe y
        int wb;         // latimea unui bit
        int hb;         // inaltimea unui bit
        int nrr;        // numarul de randuri                   
        int nrc;        // numarul de coloane
        int dc;         // dreptunghi d_c=1, cerc d_c=0)
        int rv;         // rosu r_v=1, verde r_v=0)
        public void setval(bool[,] mat)
        {
            int x = x0 + nrc * (wb + 4) - wb;
            int y = y0 + hb;
            int i, j;
            if (rv == 1)
                pens_v = pens_r;

            for (j = 0; j < nrr; j++)
            {
                for (i = nrc - 1; i >= 0; i--)
                {
                    if (dc == 1)
                    {
                        des.DrawRectangle(creion_gr, x - 1, y - 1, wb + 1, hb + 1);
                        if (mat[j,i])
                            des.FillRectangle(pens_v, x, y, wb, hb);
                        else
                            des.FillRectangle(pens_gri, x, y, wb, hb);
                    }
                    if (dc == 0)
                    {
                        des.DrawEllipse(creion_gr, x - 1, y - 1, wb + 2, hb + 2);
                        if (mat[j,i])
                            des.FillEllipse(pens_v, x, y, wb, hb);
                        else
                            des.FillEllipse(pens_gri, x, y, wb, hb);
                    }
                    x -= wb + 4;
                }
                x = x0 + nrc * (wb + 4) - wb;
                y += hb + 4;
            }
        }
        public matrix_b(System.Drawing.Graphics desen, int pozx, int pozy, int bit_w, int bit_h, int nr_randuri, int nr_coloane, int d_c, int r_v)
        {
            des = desen;
            x0 = pozx;              // pozitia pe x
            y0 = pozy;              // pozitia pe y
            wb = bit_w;             // latimea unui bit
            hb = bit_h;             // inaltimea unui bit
            nrr = nr_randuri;       // numarul de randuri
            nrc = nr_coloane;       // numarul de coloane
            dc = d_c;               // dreptunghi d_c=1, cerc d_c=0)
            rv = r_v;               // rosu r_v=1, verde r_v=0)
        }
    }