How to use #declare and spline using vapory?

[jitAbhra]

Dear Zulko,

This is a very nice and scalable wrapper to use povray. I wanted to use spline using vapory to create continuous curves. An example from povray is such.

---

declare MySpline =

spline {
cubic_spline
-.25, <0,0,-1>
0.00, <1,0,0>
0.25, <0,0,1>
0.50, <-1,0,0>
0.75, <0,0,-1>
1.00, <1,0,0>
1.25, <0,0,1>
}

declare ctr = 0;

while (ctr < 1)

sphere {
MySpline(ctr),.25
pigment { rgb <1-ctr,ctr,0> }
}
#declare ctr = ctr + 0.01;

end

---

If I break it up in multiple steps. It does two things

1. interpolate data given set of points. (Problem is here)
2. Then plotting spheres.

Two methods came to my mind to solve the problem. First, interpolate the data by using some spline with higher resolution using scipy. But it has the drawback of storing interpolated data points. Or, find a way to declare spline function in povray using vapory. Is it possible to do from vapory?

Would you please share your comments and possible suggestion to implement this using vapory.