private List<Point> ChebyshevInterpolation(Function func)
{
List<Point> interpolated;
int numberOfNodes;
float a, b, jump;
if (float.TryParse(tbJump.Text, out jump) &&
float.TryParse(tbBegin.Text, out a) &&
float.TryParse(tbEnd.Text, out b) &&
int.TryParse(tbNodesNumber.Text, out numberOfNodes))
{
NewtonChebyshevInterpolation interpolator = new NewtonChebyshevInterpolation();
List<Point> nodes = new List<Point>();
List<double> domain = new List<double>();
nodes = ChebyshevNodes(numberOfNodes, a, b, func.GetValue);
for (double x = nodes[0].x; x < b; x += jump)
{
domain.Add(x);
}
interpolated = interpolator.Interpolate(nodes, domain);
FormPlot form = new FormPlot(nodes, interpolated, func.GetValue);
form.Show();
}
else
{
MessageBox.Show("Wrong arguments. Note that a floating point number separator is coma (ex. 1,5).", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return null;
}
return interpolated;
}
private List<Point> EquidistantInterpolation(Function func)
{
float jump;
//float nodesJump;
int numberOfNodes;
//float startingNodeX;
float a, b;
List<Point> nodes = new List<Point>();
List<Point> interpolated = new List<Point>();
if (float.TryParse(tbJump.Text, out jump) &&
//float.TryParse(tbJumpNodes.Text, out nodesJump) &&
int.TryParse(tbNodesNumber.Text, out numberOfNodes) &&
float.TryParse(tbBegin.Text, out a) &&
float.TryParse(tbEnd.Text, out b))
{
NewtonInterpolation interpolator = new NewtonInterpolation();
nodes = GenerateNodes(numberOfNodes, (float)(Math.Abs(a) + Math.Abs(b)) / (float)numberOfNodes, a, func.GetValue);
Debug.Log("Interpolation started");
DateTime time = DateTime.Now;
for (double x = nodes[0].x; x < nodes[nodes.Count()-1].x; x += jump)
{
interpolated.Add(new Point(x, interpolator.Interpolate(nodes, x)));
}
Debug.Log("Interpolation finished in " + (DateTime.Now - time).TotalSeconds.ToString() + " s.");
FormPlot form = new FormPlot(nodes, interpolated, func.GetValue);
form.Show();
}
else
{
MessageBox.Show("Wrong arguments. Note that a floating point number separator is coma (ex. 1,5).", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return null;
}
return interpolated;
}