public static void Main(string[] args)
{
// Create a cubic spline with 7 control points in 2D using
// a clamped knot vector. This call is equivalent to:
// BSpline spline = new BSpline(7, 2, 3, BSplineType.CLAMPED);
BSpline spline = new BSpline(7);
// Setup control points.
IList <double> ctrlp = spline.ControlPoints;
ctrlp[0] = -1.75; // x0
ctrlp[1] = -1.0; // y0
ctrlp[2] = -1.5; // x1
ctrlp[3] = -0.5; // y1
ctrlp[4] = -1.5; // x2
ctrlp[5] = 0.0; // y2
ctrlp[6] = -1.25; // x3
ctrlp[7] = 0.5; // y3
ctrlp[8] = -0.75; // x4
ctrlp[9] = 0.75; // y4
ctrlp[10] = 0.0; // x5
ctrlp[11] = 0.5; // y5
ctrlp[12] = 0.5; // x6
ctrlp[13] = 0.0; // y6
spline.ControlPoints = ctrlp;
// Evaluate `spline` at u = 0.4.
IList <double> result = spline.Eval(0.4).Result;
Console.WriteLine("x = {0}, y = {1}", result[0], result[1]);
// Derive `spline` and subdivide it into a sequence of Bezier curves.
BSpline beziers = spline.Derive().ToBeziers();
// Evaluate `beziers` at u = 0.3.
result = beziers.Eval(0.3).Result;
Console.WriteLine("x = {0}, y = {1}", result[0], result[1]);
}