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public void Draw(double A, double B, double C) { double a, b, c; a = A; b = B; c = C; double temp, y; double lastx = 300, lasty = 300; bool ind = false; double x1 = 0; double x2 = 0; double x3 = 0; double x4 = 0; double x5 = 0; double x6 = 0; double y1 = 0; double y2 = 0; double y3 = 0; double y4 = 0; double y5 = 0; double y6 = 0; double x7 = 0; double x8 = 0; double y7 = 0; double y8 = 0; double xd, yd; double S = 0; for (int i = -1; i <= 1; i += 2) { ind = false; for (int j = -1; j <= 1; j += 2) { ind = false; if (j == 1) { if (i == -1) { x5 = lastx; y5 = lasty; } if (i == 1) { x6 = lastx; y6 = lasty; } } for (double x = -300; x <= 300; x += 0.01) { temp = f2(x, a, b, c); if (temp < 0) continue; y = f1(x, a, b, c) + j * 2 * Math.Sqrt(temp); if (y < 0) continue; xd = x * 15 + 300; yd = (i * 15 * 0.5 * Math.Sqrt(y)) + 300; if (ind == false) { lastx = xd; lasty = yd; ind = true; drawLines(); points.Clear(); if (i == -1 && j == 1) { x2 = xd; y2 = yd; } if (i == 1 && j == 1) { x4 = xd; y4 = yd; } if (i == -1 && j == -1) { x1 = xd; y1 = yd; } if (i == 1 && j == -1) { x3 = xd; y3 = yd; } } else { start = new Point3D(lastx, lasty, 0); points.Push(start); end = new Point3D(xd, yd, 0); points.Push(end); double H = Math.Abs(xd - lastx); double sA = Math.Abs(300 - lasty); double sB = Math.Abs(300 - xd); S += (sA + sB) / 2 * H; lastx = x * 15 + 300; lasty = (i * 15 * 0.5 * Math.Sqrt(y)) + 300; if (i == -1 && j == 1) { double temp2 = f2(x + 0.01, a, b, c); if (temp2 < 0) { x7 = lastx; y7 = lasty; } else { y = f1(x, a, b, c) + j * 2 * Math.Sqrt(temp); if (y < 0) { x7 = lastx; y7 = lasty; } } } if (i == 1 && j == 1) { double temp2 = f2(x + 0.01, a, b, c); if (temp2 < 0) { x8 = lastx; y8 = lasty; } else { y = f1(x, a, b, c) + j * 2 * Math.Sqrt(temp); if (y < 0) { x8 = lastx; y8 = lasty; } } } } } } } drawLines(); points.Clear(); start = new Point3D(x1, y1, 0); points.Push(start); end = new Point3D(x2, y2, 0); points.Push(end); drawLines(); points.Clear(); start = new Point3D(x3, y3, 0); points.Push(start); end = new Point3D(x4, y4, 0); points.Push(end); drawLines(); points.Clear(); start = new Point3D(x5, y5, 0); points.Push(start); end = new Point3D(x6, y6, 0); points.Push(end); drawLines(); points.Clear(); start = new Point3D(x7, y7, 0); points.Push(start); end = new Point3D(x8, y8, 0); points.Push(end); drawLines(); worker.Draw(); }