public class afisor_xy
    {
        System.Drawing.Graphics zona_des;
        int x0, y0, w, h, val_maxx, val_maxy;
        public void desenez(Color culoare_contur)
        {
            zona_des.DrawRectangle(new Pen(culoare_contur), x0 - 1, y0 - 1, w + 2, h + 2);
        }
        public void sterg(Color culoare_fundal)
        {
            zona_des.FillRectangle(new SolidBrush(culoare_fundal), x0, y0, w + 1, h + 1);
        }
        public void setval(Color culoare_grafic, double[] valsx, double[] valsy, int nrv)
        {
            int val_vx, valx, val_vy, valy;
            val_vx = System.Convert.ToInt16(System.Convert.ToDouble(valsx[0]) * (System.Convert.ToDouble(w) / System.Convert.ToDouble(val_maxx)));
            val_vy = System.Convert.ToInt16(System.Convert.ToDouble(valsy[0]) * (System.Convert.ToDouble(h) / System.Convert.ToDouble(val_maxy)));
            for (int i = 0; i < nrv; i++)
            {
                valx = System.Convert.ToInt16(System.Convert.ToDouble(valsx[i]) * (System.Convert.ToDouble(w) / System.Convert.ToDouble(val_maxx))); //scalare
                valy = System.Convert.ToInt16(System.Convert.ToDouble(valsy[i]) * (System.Convert.ToDouble(h) / System.Convert.ToDouble(val_maxy))); //scalare
                zona_des.DrawLine(new Pen(culoare_grafic), x0 + val_vx, y0 + val_vy, x0 + valx, y0 + valy);
                val_vx = valx;
                val_vy = valy;
            }
        }
        public afisor_xy(System.Drawing.Graphics desen, int pozx, int pozy, int lat, int inalt, int vmaxx, int vmaxy)
        {
            zona_des = desen;
            x0 = pozx;
            y0 = pozy;
            w = lat;
            h = inalt;
            val_maxx = vmaxx;
            val_maxy = vmaxy;
        }
    }