快速的b-样条算法，具有numpy/scipy。

I need to compute 3D bspline curves in python. I looked into scipy.interpolate.splprep and a few other scipy modules but couldn't find anything that readily gave me what I needed. So i wrote my own module below. The code works fine, but it is slow (test function runs in 0.03s, which seems like a lot considering i'm only asking for 100 samples with 6 control vertices). I need to compute 3D bspline curves in python.