public void Integrate()
{
var dlg = new Integrate(Expressions.CurrentExpression);
dlg.Ok += Integrate_Ok;
dlg.ShowDialog();
}
void Integrate_Ok(Integrate.IntegrationDialogResponse Response)
{
var antiderivative = Antiderive(Response.Expression).Replace("y=", "");
// pretty highlighting
Expressions.Add(string.Format("y<({0})&y>0&x>{1}&x<{2}", Response.Expression, Response.XMin, Response.XMax));
Expressions.Add(string.Format("y>({0})&y<0&x>{1}&x<{2}", Response.Expression, Response.XMin, Response.XMax));
// calculating the signed area bound by the x axis
var min_sub_in = Expressions.SubIn(antiderivative, "x", Response.XMin.ToString());
var max_sub_in = Expressions.SubIn(antiderivative, "x", Response.XMax.ToString());
Expressions.Add(string.Format("({0})-({1})", max_sub_in, min_sub_in));
}
