Creating tapered tube?

Hi, I’m trying to create a circular volume that would taper to a smaller size in the middle using grasshopper? I want the circular tapered volume to follow a curve. How would I go about creating something like this? I’d like to be able to change the radius of the ends of the taper and the middle of the taper? I attached a sketch of the effect that I’m trying to achieve.

See attached (assuming that since you post here … blah, blah). (121.0 KB)

Here’s a simple one. simple (10.2 KB)

Thank you so much that worked!

Awesome thank you so much for your help

BTW: A Gauss distribution (for the ratio values) could yield “smoother” tubes in both ends.

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