Catenary through three points

This is a modified version of Giulio Piacentino's Catenary code originally posted here : http://www.grasshopper3d.com/xn/detail/2985220:Comment:25775

Instead of being driven by chain length, it passes the chain through three points using hill climbing optimisation.

Attachments:

20101018_catenary_arch_2.ghx, 108 KB

Replies to This Discussion

Permalink Reply by Giulio Piacentino on November 3, 2010 at 11:40am

Very nice script!
Thanks for adapting the inputs and logic to this situation.

- Giulio

Permalink Reply by Tyler Crain on October 1, 2011 at 7:35pm

this is amazing, tried to figure this out for a while this weekend.

thank you!

Permalink Reply by Michael Makris on January 17, 2013 at 3:42pm

Daniel,

Thanks so much for this! This is exactly what I was hoping for!

That said, is there a version of this code that only takes two points and a height (i.e. allows the middle point's x-value float)? Just curious. But still totally psyched about this.

Michael M.

Permalink Reply by Daniel Davis on January 19, 2013 at 5:30am

Hi Michael,

Assuming the end-points are at the same height, you can specify a height by generating the mid-point parametrically: create a point halfway between the two end-points (you can do this by averaging the points using the average node), then move the point down to the desired height -- use this point as the mid-point in the calculations.

Permalink Reply by Ibrahim Lawal Muhammed on August 27, 2018 at 10:39am