chicadechina/B-Splines

Basis functions for B-Splines (including nonrational and rational B-Splines).

Given the number of control points(N), the order of Splines (K), a sequence of knot vector (T), and the file name of txt format, the function basisfunc_NBS computes the nonrational (unweighted) basis functions N_ik(t) for each segment up to the Kth order, and writes the data to the txt file.
Add an input variable w for weights, the function basisfunc_NURBS computes the rational (weighted) basis functions R_ik(t) for each segment at the Kth order.