Loxodrome

Replies to This Discussion

Permalink Reply by Duncan W on May 16, 2013 at 4:27pm

Laurent, thank you so much. I can only wish I had your level of competence.

Given how advanced this already is, I feel a bit silly to ask for more, but I get the impression you enjoy the Grasshopper challenge, so here goes. Indeed, I would need the possibility to apply the curve to different parent objects other than a sphere, for example a cone, ellipsoid, or otherwise revolved surface, as you mentioned.

Ideally, I could modify the object on the fly in GH (or Rhino) and have the curve update accordingly. Lastly, I would need variable control over how close the rings are apart from one another both in their offset distance (top view) and z value. I was thinking perhaps this is possible using paneling tools attractors?

In any case, thank you for the amazing work.

Permalink Reply by Laurent DELRIEU on May 17, 2013 at 12:25am

Duncan

I think there is a, partial, solution to your problem. For Spiral I did that

http://www.grasshopper3d.com/forum/topics/diagonal-grid-with-horizo...

there is no equations (in my memory :-), the revolution shape is done with a GH component it is the same for the control over how close the rings. It is no more a loxodrome (constant angle on a surface). But as you will see it was not to difficult to design the London Swiss Re-tower.

Permalink Reply by Duncan W on May 17, 2013 at 4:43am

That is very interesting. So much fun to play around with the parameters. I'll use it to train myself, thank you.

Permalink Reply by William Dunn on December 29, 2018 at 3:51pm

Thanks Laurent.  Such a beautiful curve and a welcome surprise to get my hands on your description many years later for my current needs.. What a great community!

Permalink Reply by Laurent DELRIEU on December 31, 2018 at 8:07am

Happy you find it useful. This old forum is still a great source of definitions. 

Happy end of the year.