Ernest

The documentation now specifies spline interpolation uses Catmulli-Rom interpolation, thank you, but its still not clear to me the order of the inputs, and how the interpolation factor works?

interp-what-is-the-order-of-points-and-facrtor-for-inputs-1-5

* in1 is a value between 0 and 1, for the offset between P1 and P2

The assumption would seem to be:
* in1 is a value between 0 and 1, for the offset between P1 and P2
* in2 is P0
* in3 is P1
* in4 is P2
* in5 is P3

interp :what is the order of points and factor for inputs 1-5?