private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
try
{
double xMin = double.Parse(txtXMin.Text);
double xMax = double.Parse(txtXMax.Text);
double yMin = double.Parse(txtYMin.Text);
double yMax = double.Parse(txtYMax.Text);
Expresiones.Evaluador ie = new Expresiones.Evaluador(txtExpresion.Text);
int iMax = pictureBox1.ClientRectangle.Width;
int jMax = pictureBox1.ClientRectangle.Height;
List <Point> puntos = new List <Point>();
for (int i = 0; i < iMax; i++)
{
double x = ((xMax - xMin) / iMax) * i + xMin;
double y;
try
{
y = ie.Evaluar(x);
int j = Convert.ToInt32((0 - jMax) / (yMax - yMin) * (y - yMin) + jMax);
puntos.Add(new Point(i, j));
}
catch (Exception)
{
}
}
e.Graphics.DrawLines(Pens.Red, puntos.ToArray());
}
catch (Exception)
{
}
}
private void cmdEvaluar_Click(object sender, EventArgs e)
{
try
{
Expresiones.Evaluador ie = new Expresiones.Evaluador(txtExpresion.Text);
double resul = ie.Evaluar(double.Parse(txtX.Text));
MessageBox.Show(resul.ToString());
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error");
}
}
