Grasshopper

algorithmic modeling for Rhino

Continuing to explore the work of Rinus Roelufs, I had some progress with the selfintersecting Moebius band.


The holes that permits the surface to weave into itself are now circular. The definition is not all that parametric yet, meaning you can only change the size of the moebius, the size of the holes and whether the moebius band should be twisted once or three times.

This last part, that you can control the number of twists is thanks to Lorenz Lachauer. This possibility never occurred to me before, but it's really cool.



MoebiusConnectedHoles.ghx

Views: 2769

Tags: Rinus, Roelofs, interwoven, self-intersection, tutorial

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Comment by Sahara on August 5, 2010 at 5:26am
hi there,
for some reason I cannot open the ghx file!!!!it opens,but there is nothing inside???could you plaease help!!!!it give me a message like IQ generated 34 messages...something like that???thx
Comment by Daniel Xiong on August 1, 2009 at 10:13am
Amazing! I really learned a lot from you guys:)
I would try to make some of my own later.
Comment by Vicente Soler on August 1, 2009 at 8:06am
That's probably due to the nurbs interpolation, if you increase the number of points it should go away.
Btw, now i remember that thread, my memory is failing me misserably lately, i didn't even remember i had it with you.
Comment by Lars Renklint on August 1, 2009 at 7:41am
Anyway, it was thanks to your enormous willingness to share and help people that I got started with GH, and the Moebius definition you posted kept me occupied for a long time, trying out different options. Thanks!
Comment by Lars Renklint on August 1, 2009 at 7:14am
Hi Vicente, yes I remember that thread, it is very good that the forum moved here, so files don't dissapear all the time.

Found that def - doublemobius.ghx just flattened one input and now it works.

I actually look at it the other way around and prefer the holes in the finished model to be round. One thing I never did understand with the definition above is why the surface didn't meet nicely, since it was constructed from a mathematical function it should have.

Comment by Vicente Soler on August 1, 2009 at 6:41am
Hi Lars, it's a shame many files have been deleted from the old forum. I posted something similar in december of last year. I don't have the definition, just the screenshot i posted:


The downside of orienting circles directly onto the mobius band is that if you were to unroll the band and flatten it out, the holes won't be circular. This definition uses another method so this doesen't happen.

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