public void CalcularArea()
{
if (rdRectangulo.Checked)
{
Point punto1 = new Point(Convert.ToInt16(txtP1x.Text), Convert.ToInt16(txtP1y.Text));
Point punto2 = new Point(Convert.ToInt16(txtP2x.Text), Convert.ToInt16(txtP2y.Text));
r = new Rectangulo(punto1, punto2);
lbResAreaRec.Text = r.area().ToString();
}
else
{
Point puntos = new Point(Convert.ToInt16(txtPx.Text), Convert.ToInt16(txtPy.Text));
int radio = int.Parse(txtRadio.Text);
c = new Circulo(radio, puntos);
lbAreaCir.Text = c.area().ToString();
}
}
public void mostrarRec(Rectangulo r)
{
lapiz = new Pen(colorLapiz);
lapiz.Width = 3;
g.DrawRectangle(lapiz, r.p1.X, r.p1.Y, r.ancho(), r.alto());
}