KCureve simple implementation in python

A very simple and non-optimizal version of SIGGRAPH2017 paper k-Curves: Interpolation at Local Maximum Curvature python implementation,just for presentation

Origin Paper

some python libs used in this implementation

Uses a non-optimized method to calculate C_i,1, should had used Cyclic tri - diagonal equations to calculate instead, it can both accelarating convergence and making the results more accurate, due to my poor code, it is rather hard for me to make what I had written clear T_T, and I do not plan to spend too much time to fix it now...
As a program which should focus on performance I really do not think my code is good enough, maybe it need some optimization to make it fast,maybe some CPython extensions...
Do not implement the condition where the curve does not close.