Tween gradually between two curves

Grasshopper
1

image
As displayed in the image I want to be able to tween between two curves by controlling the factor at each point. I’ve used Pufferfish’s “Curve Edit Points” to get the spline points and parameter values (to control the tween factor at each point), but the parameter values which I assumed where lengths on the curve do not match with the total curve length.

image
image989×666 54.8 KB

Can anyone think of an alternative way to do this?

2

I’ve managed to get close with the following, but it doesn’t take into account the actual parameter values of each vertex on the curves.

image
image1141×406 45.2 KB

image
Any ideas?

3

Reparametrize input curves then “t” parameters become 0 to 1 and use directly to F input

4

That did it. Thank you very much!