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"folding" and "unfolding objects" (#512)
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jonah  
#1 Posted : Thursday, September 13, 2007 11:27:39 AM(UTC)
jonah

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im curious to know if i can draw a series of shapes in two dimensions, make surfaces and "fold" them to create a 3d object.

for example if you flattened a cube, it would resemble a cross comprised of six squares, could you take these surfaces and make them into a cube?

im trying to model a prism with non regular planar face geometry flat and hinge along interesecting lines to create a volume.

thanks. jonah.
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tmay  
#2 Posted : Thursday, September 13, 2007 12:13:02 PM(UTC)
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I'm assuming that you start with a single surface, and you could split that surface at each "fold" and rotate about the fold line.

More difficult would be starting as a solid cube, converting to individual surfaces, and the rotating them into a flat, unfolded state.

Sheetmetal functionality is very useful, and I would use it if it showed up in CU V5.

tom
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dexter  
#3 Posted : Thursday, September 13, 2007 3:08:27 PM(UTC)
dexter

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This was brought up in the suggestions forum - maybe it will eventually find its way in?

http://forum.punchcad.com/showt...p?t=325&highlight=unfold
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jlm  
#4 Posted : Friday, September 14, 2007 9:48:38 AM(UTC)
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jonah wrote:

take these surfaces and make them into a cube?

In the late 1980' HP was distributing a CAD software able to do this (a module for ME30 if I remember well). It was ideal for steel sheet works and carton folding boxes.
Hopefully we'll see this coming back on a more user-friendly soft...
JL
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jol  
#5 Posted : Sunday, November 18, 2007 5:22:12 AM(UTC)
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Yes, would be really helpful .. is this on the list for V5 ?
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lgrijalva  
#6 Posted : Tuesday, July 1, 2008 11:48:03 PM(UTC)
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this thread is kinda missing, cause i use to do a several geometric develop, a flatten, folding, unfolding feature will rock!!
this one and convert to arc tool are the only tools that i use on rhino. now the shark have the arc too, just need one more to be my preferred software

so, lets keep this thread alive

lgrijalva
Luis G
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Tim Olson  
#7 Posted : Wednesday, July 2, 2008 12:03:38 AM(UTC)
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lgrijalva wrote:
this thread is kinda missing, cause i use to do a several geometric develop, a flatten, folding, unfolding feature will rock!!
this one and convert to arc tool are the only tools that i use on rhino. now the shark have the arc too, just need one more to be my preferred software

so, lets keep this thread alive

lgrijalva


We're involved with a project now involving unfolding single & double curvature surfaces into a flat pattern. Flattening double curvature surfaces is especially challenging so we've contracted this out to a professor who specializes in this area. Hopefully we will have more to talk about later in the year.


Tim
Tim Olson
IMSI Design/Encore
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ttrw  
#8 Posted : Wednesday, July 2, 2008 2:17:49 AM(UTC)
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Didn't Ashlar have some sort of sheet folding feature in it, that could be flattened out at the flick of a switch? I know SW's has a similar feature. But I must say that SW's sheet metal tools can be quite difficult to use, until one gets the hang of them. Lets beat them at their own game eh?

Tom
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Art  
#9 Posted : Wednesday, July 2, 2008 7:41:44 AM(UTC)
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I could certainly wait for double curvature if we could get a simple, intuitive, folding and unfolding.

Art

Macintel Shark fx
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Tim Olson  
#10 Posted : Wednesday, July 2, 2008 9:26:28 AM(UTC)
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>>Ashlar have some sort of sheet folding feature in it,
>>that could be flattened out at the flick of a switch?
Not unless it was added after 2003. But I don't think so.

Tim
Tim Olson
IMSI Design/Encore
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ttrw  
#11 Posted : Wednesday, July 2, 2008 9:42:04 AM(UTC)
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I seem to remember it being the 2D version. Graphite? It was after 2003, but it wasn't exactly intuitive. :confused:
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Exocubic  
#12 Posted : Wednesday, July 2, 2008 10:21:04 AM(UTC)
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FormZ has a very robust and feature-rich unfolding tool - but it doesn't respect the thickness of the material being unfolded, nor does it take into account k-factors or bend radii for sheet metal unfolding/flattening. Implementing Solidworks-style tools for this in Shark would be, ahem, AWESOME.
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zumer  
#13 Posted : Saturday, July 12, 2008 10:51:17 AM(UTC)
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There's a relatively inexpensive program (compared to more specialised CAD apps, although it doesn't look as inexpensive as it used to since VC appeared) called Ultimate Unwrap 3D. It's facet based, so solids have to be converted to 3DS, obj, dxf, whatever, but since we're trying to rebuild shapes from flat sheets, not a huge drawback, and I do notice that the writer has added rhino - and apple QuickDraw, although it doesn't run on mac. It doesn't allow for bend radii or sheet thickness, but it works semi-manually and I find it's rather well thought out. Can unwrap high facet numbers without overlapping them. Maps UVs too, and has some other occasional features like cartoon-style renders. There's a basic usage tute on this page:
http://www.unwrap3d.com/tutorial_unfold.aspx
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Exocubic  
#14 Posted : Saturday, July 12, 2008 4:41:51 PM(UTC)
Exocubic

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Unwrapping UVs is NOT the same as unrolling/unfolding developable surfaces or unfolding sheetmetal solids. Trust me, I've tried it. You don't want to entrust $20,000 worth of stainless steel to anything designed for painting textures on Orc's faces.
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zumer  
#15 Posted : Saturday, July 12, 2008 10:30:00 PM(UTC)
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That's a worthy warning, but I mentioned it because that's something it does beyond unwrapping geometric faces, not because I confused the two. I do graphic work occasionally, as well as mechanical, and I would guess that others do, too. I've successfully used UU3D for quite complex duct work, because it's considerably quicker than doing 100% manual development. Sample the trial version and see.
BTW, I like your work, impressive, and very expressive to me.
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ttrw  
#16 Posted : Sunday, July 13, 2008 4:55:16 AM(UTC)
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zumer wrote:
There's a relatively inexpensive program (compared to more specialised CAD apps, although it doesn't look as inexpensive as it used to since VC appeared) called Ultimate Unwrap 3D.


Zumer I'm not interested at all in ANYTHING that doesn't work on OS X. Full stop.

Dual platform? Yes- okay, but single platform? No.

edit- and yes, Exocubic is absolutely right. Please don't confuse the two. They are not the same.
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zumer  
#17 Posted : Sunday, July 13, 2008 7:47:23 AM(UTC)
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please read the preceding post. It's not confused or confusing, nor am I. I did not post for your exclusive or incidental benefit. My post seems to make you pissy, and your post makes me pissy. Why don't we just ignore each other?
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ttrw  
#18 Posted : Sunday, July 13, 2008 8:01:57 AM(UTC)
ttrw

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zumer wrote:
Why don't we just ignore each other?


LOL!

How can I ignore you if we are both posting in the same section? Be reasonable now. I'm sorry if I got your back up, it was probably my fault for barking at you because I'm still annoyed about the amount of people still moaning about having their iPhones cut off on the 11th (Friday), because they were being too damn impatient at waiting a day or two until the rush had died down.

But, you must understand that posting stuff that is Windows only in a forum that is for both PC and Mac users is a bit irritating, do you not?

At the moment I am fighting with Autodesk 3DS Max (which as you probably know is also PeeCee only), which has to have one of the worst over engineered interfaces present on any software out there. I really don't want to work on this horrible interface, but my work insists that it has to be done on 3DS Max. Give me Shark any day! So naturally I am biased :mad: :D
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Exocubic  
#19 Posted : Sunday, July 13, 2008 8:50:13 AM(UTC)
Exocubic

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zumer wrote:
That's a worthy warning, but I mentioned it because that's something it does beyond unwrapping geometric faces, not because I confused the two. I do graphic work occasionally, as well as mechanical, and I would guess that others do, too. I've successfully used UU3D for quite complex duct work, because it's considerably quicker than doing 100% manual development. Sample the trial version and see.
BTW, I like your work, impressive, and very expressive to me.


Understood. Any tool that works for you should have a place in your toolbox. UU3D is quite a bit more robust (judging by the tutorial you linked to) than I'd first surmised.

Thanks for the compliments, too.
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lgrijalva  
#20 Posted : Monday, August 4, 2008 6:19:33 PM(UTC)
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Art wrote:
I could certainly wait for double curvature if we could get a simple, intuitive, folding and unfolding.

Art

Macintel Shark fx


Totally agree on it!

lgrijalva
Luis G
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MacOSX Ventura 13.6.4
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