示例#1
0
 public FormulaPlotPanel()
 {
     InitializeComponent();
     exoner = new Executioner();//создаем объект счетчика
     bitmap = new Bitmap(formulaPlotPB.Width, formulaPlotPB.Height);
     formulaPlotPB.Image = bitmap;
     g = Graphics.FromImage(bitmap);
     g.FillRectangle(Brushes.LightYellow, 0, 0, bitmap.Width, bitmap.Height);
     drawer.DrawAxes(g, bitmap);
 }
示例#2
0
        public void Draw2DformulaPlot(Graphics g, Bitmap bitmap, Executioner exoner, string formulaX, string formulaY)
        {
            double y1    = 0;
            double y2    = 0;
            double x2    = 0;
            double x1    = 0;
            double prevX = 0;
            double prexY = 0;
            int    num   = 0;

            Point[] Points = new Point[20];

            for (double t = -5; t < 5; t += 0.5)
            {
                y1 = exoner.FindSolution(t.ToString(), formulaY);
                x1 = exoner.FindSolution(t.ToString(), formulaX);

                //if (!(double.IsNaN(prexY)) && !(double.IsNaN(y1)))
                //{
                //    g.DrawLine(Pens.Black, (float)prevX * 10 + bitmap.Width / 2, bitmap.Height / 2 - (float)prexY * 10, (float)x1 * 10 + bitmap.Width / 2, bitmap.Height / 2 - (float)y1 * 10);
                //}

                //x2 = exoner.FindSolution((t+0.1).ToString(), formulaX);
                //y2 = exoner.FindSolution((t+0.1).ToString(), formulaY);

                //if (!(double.IsNaN(y1) && double.IsNaN(y2))) { //область допустимых значений
                //    g.DrawLine(Pens.Black, (float)x1*10 + bitmap.Width / 2, bitmap.Height / 2 - (float)y1 * 10, (float)x2 * 10 + bitmap.Width / 2, bitmap.Height / 2 - (float)y2 * 10);
                //}
                //prevX = x2;
                //prexY = y2;
                y1 = bitmap.Height / 2 - (float)exoner.FindSolution(t.ToString(), formulaY) * 10;
                x1 = (float)exoner.FindSolution(t.ToString(), formulaX) * 10 + bitmap.Width / 2;

                if (!(double.IsNaN(y1)) && !(double.IsNaN(x1)))
                {
                    Points[num] = new Point((int)x1, (int)y1);
                    num++;
                }
            }
            g.DrawCurve(Pens.Black, Points);
        }