private void btnLagrangePolonomial_Click(object sender, EventArgs e)
{
if (lbxPoints.Items.Count < 2)
{
MessageBox.Show("Please, add some points to get a polonomial!");
}
else
{
points = new int[lbxPoints.Items.Count * 2];
int index = 0;
for (int i = 0; i < lbxPoints.Items.Count; i++)
{
string point = lbxPoints.Items[i].ToString();
string s = point.Substring(0, 1);
while (s != ")")
{
if (s == "(")
{
point = point.Substring(1);
s = point.Substring(0, 1);
}
else if (s == ",")
{
point = point.Substring(1);
s = point.Substring(0, 1);
}
else
{
string number = "";
while (s != "," && s != ")")
{
number = number + s;
point = point.Substring(1);
s = point.Substring(0, 1);
}
points[index] = Convert.ToInt32(number);
index++;
}
}
}
treePolonomialL = treePolonomialL.MakePolonomialFunctionLagrange(points);
draw.DrawFunctionPolLa(treePolonomialL);
lblFunction.Text = treePolonomialL.Read();
}
}