An odd solid conundrum.
-
I was doodling away testing some plugins and randomly created this shape.
I noticed it was a solid, yet it seems to somehow defy a few of the rules of a solid.
It just struck me as odd and I was wondering if anyone might have an explanation for it.
It's of no real importance but it seems like a flaw in the logic of the software, and could have an impact of sorts when trying to make things for 3d printing.
-
Interesting, indeed. Is it because of the lack of intersections between faces?
-
I guess so, it's sort of folded over on itself or extruded through itself. If you intersect it it obviously loses it's solidity.
The model is there if you want to look for yourself. -
Similar to how a curve can be straight.
Sometimes reality clashes with logic and chaos ensues.
There's a name for this result and I can't think of it.
I know of tools in MeshLab that highlight these [unknown name] errors and flag them.
Hopefully it will come to me.
I do know that scanning for this is referred to mesh linting.
-
Maybe because the self intersection is not take in count as you can see on some of no blue edges!
-
Thanks for that Rich, I's good to know it's not an unheard of anomaly.
And as an added bonus, having googled mesh linting I now know everything you never wanted to know about clothes dryers and the people who live in them. -
It's like the old tree falls and nobody there to hear it bollocks.
If a solid passes through itself is it really a solid.
It's easy to reproduce and it's doing my head in.
-
The volume mesh is solid because the app considers it manifold.
Even though it is physically wrong it is programmatically correct to SU.
Unprintable but solid until you intersect and clean.
Faces are infinitely thin
-
Yeah I know what you mean Rich but it still drives me nuts.
Even with thickness it is solid.
And here it is cleaned up and vaguely printable, why on earth anyone would want to I don't know. But it was an interesting exercise in working through the logic of virtual solids and real solids.
-
You've [re]invented a sort of 'Klein Bottle' - a topological nightmare !
http://en.wikipedia.org/wiki/Klein_bottleLike a 3d Mobius strip ! - http://en.wikipedia.org/wiki/M%C3%B6bius_strip
-
Excellent, Thanks Tig, never seen the Klein before.
Also the shape I made is not dissimilar to a volute I think.
Hello! It looks like you're interested in this conversation, but you don't have an account yet.
Getting fed up of having to scroll through the same posts each visit? When you register for an account, you'll always come back to exactly where you were before, and choose to be notified of new replies (either via email, or push notification). You'll also be able to save bookmarks and upvote posts to show your appreciation to other community members.
With your input, this post could be even better π
Register Login
Advertisement