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

by Seetul

Dec 2, 2015

I have a 2D map in rhino, made from pointclouds from grasshopper and I need to make it 3D into a globe without anything being distorted. Does anyone have any suggestions how to do this? The longitudes and Latitudes are all also correct so I can plot things in the correct country- when it goes to 3d does the longitudes and latitudes remain in the right place?

  • up

    David Rutten

    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.

    4

    Dec 2, 2015

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      Daniel González Abalde

      Dec 6, 2015