Soft dimples on sphere...at the center of a triangular panel...that sits between...

Greetings, GH gurus!

I'm fairly new to Grasshopper, still, and I've managed to get myself to a place where I'm good and stuck...

I'm working on a detail system that I want ultimately to be applied to a closed organic form -- basically a sphere that's been "squished" at the poles.

I've gotten as far as this:

But my target is closer to this:

So far, it's all mostly driven by the "Triangle Panels B" component from Lunchbox: I used it to generate center points for the various round features (suction cups, the stepped impressions, and the spheres), and the edges became the basis for a wbFrame from Weaverbird.

What I'm looking for specifically (right now, anyway) is a way to get that soft depression underneath the sphere at the center of each triangle.

I was hoping to be able to use the same set of points that I use to place the spheres as attractors (or repulsors, I guess), so that the impression had a similar character to the suction-cup shapes, but... turns out I've got no idea how to do that :p Also, that might not even be the best way to go about it...

I've definitely got more issues/problems than that, but in the interest of my own sanity, I figured it's best to solve one problem at a time.

Any advice, info, links, etc., would be greatly appreciated!

Replies to This Discussion

Permalink Reply by Ethan Gross on May 29, 2017 at 4:19pm

Hi Raleigh, I'm not clear on how you arrived at your triangulation but maybe the attached will help.

Attachments:

dimples.gh, 42 KB

Permalink Reply by Ethan Gross on May 29, 2017 at 5:52pm

Added some struts, just for clarity.

Permalink Reply by Raleigh Freeman on May 29, 2017 at 6:31pm

Thanks, Ethan!

I look forward to giving this a try when I get back to my desk.

It did occur to me that I should have posted the definition as well, but I had to leave before I could clean up the file & post it. I'll do that when I get back, too...

Permalink Reply by Ethan Gross on May 29, 2017 at 7:38pm

I don't know exactly what you're after but I didn't like that pin cushion look the function I used gave, since it just trails off, so here's an update using a sigmoid type transition that has a cutoff at radius 'r' and blends smoothly into the sphere.

Attachments: