Modeling issue: Cloth wrapped around a metal structure

Wildchild

Thank you fredo for taking care of this! I've immediately tried JointPushPull 1.7 as soon as I could and here's the result:
I used one of my shapes in the model above but to show more clearly the results I applied an inset of 50cm.
NOW all the faces of the resulting shape are equidistant from the ones of the original shape! GREAT!
BUT...there's always a BUT, the upper and lower edges are not coplanar anymore.
Of course that is not a big deal, it's just about re-shaping the horizontal edges...but since we're here I pointed it out! Let us know if there's a way to fix it!

Great job anyway fredo! Thanks!

fredo6

Wildchild,

For the top and bottom alignment, there is an option in JPP to guide a push pull along a plane.

In your case, if you pres CTRL + ArrowUp, you would force the Horizontal plane

Fredo

Wildchild

Dude...I don't want to bother more than I've done but , I tried this method and it actually does work, the top and bottom are now aligned, the thing is now the faces are not equally insetting anymore . Seems like that one excludes the other, as shown below:
or or.jpg

Most likely I am not doing it in the right way, in that case, would you be so kind to explain? Thanks

fredo6

Could you please post your particular model above, because I don't obtain the discrepancy you mentioned. On my tests, the extruded faces are parallel to the original face and at the specified distance.

Thanks

Fredo

Wildchild

Sure enough I'm doing something wrong.

thanks

The actual inset that I need is 1.5 cm, but as far as I know any other value will work for testing purposes.

fredo6

@wildchild said:

Sure enough I'm doing something wrong.

thanks

If you use the Tape tool to measure the corersponding edge, you will observe that they are strictly parallel at a distance of exactly 20cm. However, the orthogonal distance between faces is smaller.

I'll need to have a look and try to fix that if I can

Fredo

Wildchild

I know, I tried to mesure it! what shook me is that the top and bottom are equidistant while the orthogonal faces are not! And as far as i know this is geometrically impossible if the 2 faces are parallel (equidistant). The only solution to this would be that the inset face is not flat, or rather, made by non-coplanar triangles or quad-faces(but that's not the case). Does that even makes sense?

See what you can do! thank you.

gilles

you could use Smartpushpull plugin.
http://forums.sketchucation.com/viewtopic.php?f=323&t=23341&hilit=smartpushpull

I applied it on each faces, then erase unwanted geometries about 5 mn work.

Volumes_smartpushpull.skp

Wildchild

@gilles: DUDEEEEEEEEEE!! I say Bingo! it definately does work! how come I haven't noticed this plugin i don't know!
smart push pull result.jpg

The funny thing is that in the 1001 pro bit tool bar which I have, there's a tool that behaves just like smartpushpull but can't handle small values, infact it wasn't working in this case.

It would be cool to just be able to interanct with the adjacent faces as well.

fredo6

WildChild,

I modified JPP to handle the case of forced plane. This won't work in all situations (as there is no mathematical solution for vertices with more than 3 faces), but it might help for your particular objectives of wrapping box.

See main post of JPP

Fredo

Wildchild

Sorry for being ridiculously late in my reply, I've been busy working.
I finally tested your update Fredo, and it works perfectly smooth, and it breezed through the exam!

I can't express how gratefull I am! thank you very much! Hope I wont bother anyone with some crazy request for a while!
the result

pilou

Not exactly the same but can give some ideas

Explosion =Radial Move by C.Plassais Fredo6/ Pilou