void fillInfo()
{
textBoxSplineGrid.Text = (spline.webCount - 1).ToString();
textBoxMainGrid.Text = ((spline.webCount - 1) * 100).ToString();
SplineGraph sg = spline.lsgLast[0];
SplineGraph sg1 = spline.lsgLast[0];
SplineGraph sg2 = spline.lsgLast[0];
foreach (var s in spline.lsgLast)
{
if (s.error.maxErrorF > sg.error.maxErrorF)
{
sg = s;
}
if (s.error.maxErrorF1 > sg1.error.maxErrorF1)
{
sg1 = s;
}
if (s.error.maxErrorF2 > sg2.error.maxErrorF2)
{
sg2 = s;
}
}
textBoxMaxErrorFunc.Text = sg.error.maxErrorF.ToString();
textBoxMaxErrorFuncX.Text = sg.error.xmef.ToString();
textBoxMaxError1d.Text = sg1.error.maxErrorF1.ToString();
textBoxMaxError1dX.Text = sg1.error.xmef1.ToString();
textBoxMaxError2d.Text = sg2.error.maxErrorF2.ToString();
textBoxMaxError2dX.Text = sg2.error.xmef2.ToString();
}
List <SplineGraph> GetSpline(Func <double, double> func, BackgroundWorker worker)
{
List <SplineGraph> lsg = new List <SplineGraph>();
List <double> delta = new List <double>();
List <double> lambda = new List <double>();
if (webCount > 2)
{
delta.Add(-0.25);
var test1 = func(webX[2]) - 2 * func(webX[1]) + func(webX[0]);
var test2 = test1 * 3;
var test3 = test2 / (4 * webStep * webStep);
lambda.Add((3 * (func(webX[2]) - 2 * func(webX[1]) + func(webX[0]))) / (4 * webStep * webStep));
}
for (var i = 1; i < webCount - 2; i++)
{
worker.ReportProgress((int)((double)i / (webCount - 2) * 15));
delta.Add(-1 / (4 + delta[i - 1]));
var test1 = func(webX[i + 2]) - 2 * func(webX[i + 1]) + func(webX[i]);
var test2 = test1 * 3 / (webStep * webStep);
var test3 = test2 - lambda[i - 1];
var test4 = test3 / (4 + delta[i - 1]);
lambda.Add((3 * (func(webX[i + 2]) - 2 * func(webX[i + 1]) + func(webX[i])) / (webStep * webStep) - lambda[i - 1]) / (4 + delta[i - 1]));
}
if (webCount > 2)
{
delta.Reverse();
lambda.Reverse();
}
webX.Reverse();
lsg.Add(new SplineGraph()
{
interval = new Interval()
{
left = webX[1], right = webX[0]
}, param = new Params()
{
a = func(webX[0]), c = 0
}
});
for (var i = 0; i < webCount - 2; i++)
{
worker.ReportProgress(15 + (int)((double)i / (webCount - 2) * 15));
var sg = new SplineGraph()
{
interval = new Interval(), param = new Params()
};
sg.interval.left = webX[i + 2];
sg.interval.right = webX[i + 1];
sg.param.c = delta[i] * lsg[i].param.c + lambda[i];
lsg.Add(sg);
}
webX.Reverse();
lsg.Reverse();
for (var i = 0; i < webCount - 1; i++)
{
worker.ReportProgress(30 + (int)((double)i / (webCount - 1) * 20));
lsg[i].param.a = func(lsg[i].interval.right);
lsg[i].param.b = i == 0 ? (func(lsg[i].interval.right) - func(lsg[i].interval.left)) / webStep + webStep * (2 * lsg[i].param.c) / 3
: (func(lsg[i].interval.right) - func(lsg[i].interval.left)) / webStep + webStep * (2 * lsg[i].param.c + lsg[i - 1].param.c) / 3;
lsg[i].param.d = i == 0 ? lsg[i].param.c / (3 * webStep) : (lsg[i].param.c - lsg[i - 1].param.c) / (3 * webStep);
}
return(lsg);
}