How to make a 2d map into a 3d globe

Replies to This Discussion

Permalink Reply by David Rutten on December 2, 2015 at 3:28pm

If you're turning something from a plane into a sphere, it has to be distorted...

Assuming you just want a straight mapping from plane UV to sphere Lat-Lon, you have two basic options:

• convert the point coordinates using some expression. This is basically just a bunch of sines and cosines to turn (u,v) into (x,y,z)
• map your geometry using a plane surface and a sphere surface.

The latter approach is probably easiest.

Attachments:

• map.gh, 91 KB

Permalink Reply by Nik Willmore on December 5, 2015 at 10:10pm

The least distorting scheme is folding things up, as Bucky Fuller developed and has since been improved on by using spherical geometry:

http://www.win.tue.nl/~vanwijk/myriahedral/CAJ103.pdf

Permalink Reply by Seetul on December 7, 2015 at 8:34am

Thank you for your help, do you know how I can translate 2D polylines onto a spherical surface? (Please see attached file)

Permalink Reply by Daniel González Abalde on December 7, 2015 at 9:37am

Your image is broken,
but this is easy!

Attachments:

• RemapPolylinesToSpherical.gh, 15 KB

Permalink Reply by Leonardo Aguiar on July 24, 2017 at 12:19pm

Is there a way to do this to a set of multiple referenced surfaces or breps?

Permalink Reply by Daniel González Abalde on December 6, 2015 at 6:00am

Attachments:

• RemapToSpherical.gh, 789 KB