Ellipsoid Surface Panelling

Hi,

I'm not great with Grasshopper but I can move around and work in it fairly well. With that said I am stuck with how to pattern an ellipsoid shape without it coming to a point in the vertex (shown in the first attachment). The second and third attachment shows what was manually drawn previously by somebody else (and projected from above), but it isn't applicable anymore as that was originally a perfect circle in plan - maybe this doesn't actually make a problem but the old pattern is really just a fake.

I'm using Lunchbox, but as shown that doesn't help with the UV of the ellipsoid surface. Is there a way to change the UV of the surface from polar to rectangular? Any other suggestions to explore would be great.

Thanks

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Permalink Reply by Lukasz on April 21, 2014 at 5:44pm

Hi Travis,

There are loads of different pattern making strategies, but Im not quite sure what's your objective...

From the stuff you've attached, I can suggest using Brep|Plane intersection component on your already shaped geometry and then unrolling it. You can get similar effects to the ones you've depicted

hope that helps

Lukasz

Permalink Reply by Travis Keller on April 22, 2014 at 2:59pm

yea it's hard for me to explain to say the least. Even if I intersect the geometry, unroll it, and re-bring it into grasshopper, it still reads it as a full untrimmed ellipse with polar UV mapping. This polar mapping is causing the lunchbox paneling to all come from the ellipsoid vertex. My end goal is something more like the gif down in the comments here: (http://www.grasshopper3d.com/forum/topics/triangulation-scrip-with).

Should I try to do more of a "plot points evenly across the surface" then panel from those points rather than using the surface's UV?

Permalink Reply by ClaraFabiana on January 10, 2017 at 7:18am