public class osciloscop
    {
        int x0, y0, w, h, val, val_v;
        double v_max, v_min, x_max, x_min;
        System.Drawing.Graphics zona_des;
        System.Drawing.Font font_ni = new System.Drawing.Font("Nina", 8);
        Color cul_val;
        System.Drawing.Bitmap img;
        System.Drawing.Bitmap ims;
        public void sterg()
        {
            img = new Bitmap(ims);
        }
        public void display()
        {
            zona_des.DrawImage(img, x0, y0);
        }
        public void auto_sy(double val_max, double val_min)
        {
            if (val_max - val_min != 0)
            {
                v_max = val_max;
                v_min = val_min;
            }
        }
        public void auto_sx(double x_maxim, double x_minim)
        {
            if (x_max - x_min != 0)
            {
                x_max = x_maxim;
                x_min = x_minim;
            }
            else
            {
                x_max = w;
                x_min = 0;
            }
        }
        public void setval(double[] vals, int nrv, System.Drawing.Color culoare)
        {
            int i, j;
            if (w > 0 && h > 0)
            {
                double amplif;
                if ((v_max - v_min) != 0)
                    amplif = (System.Convert.ToDouble(h) / System.Convert.ToDouble(v_max - v_min));
                else
                    amplif = 1;
                double transl = v_min * amplif;
                val_v = System.Convert.ToInt16(h + transl - amplif * System.Convert.ToDouble(vals[0])); //scalare
                if (val_v >= h)
                    val_v = h - 1;
                if (val_v <= 0)
                    val_v = 1;
                // afisare grafic sub forma de linii cu puncte

                for (i = 0; i < w; i++)
                {
                    val = System.Convert.ToInt16(h + transl - amplif * System.Convert.ToDouble(vals[i]));  //scalare
                    if (val >= h)
                        val = h - 1;
                    if (val <= 0)
                        val = 1;
                    if (val_v < val)
                    {
                        // unesc doua puncte cu o linie crescatoare
                        for (j = val_v; j <= val; j++)
                        {
                            img.SetPixel(i, j, culoare);

                        }
                    }
                    else
                    {
                        // unesc doua puncte cu o linie descrescatoare
                        for (j = val; j <= val_v; j++)
                        {
                            img.SetPixel(i, j, culoare);
                        }
                    }
                    val_v = val;
                }
                Graphics g = Graphics.FromImage(img);

                //valori axa x

                double vx = x_min;
                double pasx = System.Convert.ToDouble(x_max - x_min) / System.Convert.ToDouble(w) * 50;
                for (i = 50; i < w; i += 50)
                {
                    vx = vx + pasx;
                    g.DrawString(Math.Round(vx, 2).ToString(), font_ni, new SolidBrush(cul_val), i, h - 15);

                }

                //valori axa y

                double vy = v_min;
                double pasy = System.Convert.ToDouble(v_max - v_min) / System.Convert.ToDouble(h) * 50;
                for (i = 50; i < h; i += 50)
                {
                    vy = vy + pasy;
                    g.DrawString(Math.Round(vy, 2).ToString(), font_ni, new SolidBrush(cul_val), 2, h - i - 10);
                }
            }
        }
        public osciloscop(System.Drawing.Graphics desen, int pozx, int pozy, int n_maxx, int n_maxy, double val_max, double val_min, Color culoare_fundal, Color culoare_grid_m, Color culoare_grid, Color culoare_valori)
        {
            x0 = pozx;
            y0 = pozy;
            w = n_maxx;
            h = n_maxy;
            v_max = val_max;
            v_min = val_min;
            x_max = n_maxx;
            x_min = 0;
            zona_des = desen;
            cul_val = culoare_valori;
            if (w > 0 && h > 0)
            {
                img = new Bitmap(w, h, zona_des);
                ims = new Bitmap(w, h, zona_des);
                int i = 0, j = 0;

                // sterg imaginea

                for (j = 0; j < h; j++)
                {
                    for (i = 0; i < w; i++)
                    {
                        ims.SetPixel(i, j, culoare_fundal);
                    }
                }
                // grid
                for (j = 0; j < h; j++)
                {
                    // grid orizontal

                    if (j % 10 == 0)
                    {
                        for (i = 0; i < w; i++)
                        {
                            if (j % 50 == 0)
                                ims.SetPixel(i, j, culoare_grid_m);
                            else
                                ims.SetPixel(i, j, culoare_grid);
                        }
                    }
                    else
                    {
                        // grid orizontal vertical

                        for (i = 0; i < w; i++)
                        {
                            if (i % 10 == 0)
                            {
                                if (i % 50 == 0)
                                    ims.SetPixel(i, j, culoare_grid_m);
                                else
                                    ims.SetPixel(i, j, culoare_grid);
                            }
                        }
                    }
                }

                //chenar

                for (i = 0; i < w; i++)
                {
                    ims.SetPixel(i, 0, culoare_grid_m);
                    ims.SetPixel(i, h - 1, culoare_grid_m);
                }
                for (j = 0; j < h; j++)
                {
                    ims.SetPixel(0, j, culoare_grid_m);
                    ims.SetPixel(w - 1, j, culoare_grid_m);
                }

                Graphics s = Graphics.FromImage(ims);
                sterg();
            }
        }
    }