Varying thickness line with curve attractor

Hello,
I’m trying to make a sequence of concentric circles with variable thickness that is controlled by an attractor curve (multiple curves actually).

This is the desired effect:

The problem I’m having is with defining falloff. I want the thickness to increase in the close proximity of the curve and stay constant when far away (thin line).

I tried to achieve this with lofting perpendicular lines of varying lengths, but the falloff is to gradual.

Am I going in the right direction here? Is there a better way of doing this.
I’ve attached the gh and rhino files. circles gh.gh (13.2 KB)
circles.3dm (34.5 KB)

Thank you for reading, cheers!

Bob

Hope this helps you out. Best.

circles gh_re.gh (480.4 KB)

5 Likes

Thank you so much! I’m gonna pick through this file to learn something.
Cheers!