rhinoceros - squeeze a cylinder

[pongomarco]

Good morning to all,
This is the first post I write and I want to thank you for the help you offer to all of us null of 3d
Although I was always in the shadows, I never needed to write because I always found answers to my questions, and this is a great thing:
But... at the moment I am totally stuck on a realization with rhinoceros 4 ...
I can’t make the “stripped” effect randomly. . I am aware of the torsion command, but this realizes regular strizzatures unfortunately.
to better understand the effect that I would like to achieve is that of the squeeze of a cloth, imagine the gesture of the mother after she cleaned on the ground the milk pudding of the child of 2 months, and then squeezes it by twisting it with the two hands in the sink (interesting image :d). each time you will get a random effect, the wrinkles of the cloth will be different to each use. . .

essite a method to squeeze a laundry by getting this random squeezing effect? ? ?

I hope someone can help me
Thank you very much,
Mar

 

[flaviobrio88]

try to convert surfaces to mesh (stl) and then "strip"

 

[pongomarco]

When you're yelling at her... What do you mean? The twisted command?

 

[alpole]

Hello Marco
Did you mean something like this?
- convert to ts the surface of the cylinder
-Add faces to give more detail
-select vertical edges (loop ) and add create
-with the scale command brings all the creative edges inside
- Select points, and act with the manipulator, on individual
file , with commands , wheel, scale, move deforms freely
the shape.....
you will see that with a little patience you will reach the goal:finger:
greetings
to the

 

[pongomarco]

@alpole: thank you very much for the answer you were supergentile to try it!
we say yes and no
the final effect is as if it were threading a screw, but with irreglar threads... Do I get the idea?
excuse the question from noob... when you write ts.. You mean tsplines?

@flaviobrio88: I tried to do as you told me, but unfortunately I can't do more than a certain number of twists as after it returns to the original form, and in more hand as I twist the object, the life of the cillindro decreases, becoming like a hourglass

 

[alpole]

Hello Marco
Yes, ts stands for tspline, I send you other pictures
and I think so we approach the result you have in
mind; there are so many ways to get that
that you ask, and this is one of the possible... .

below the operations to be carried out

-I'd be looking for you, and you'd have them with series circus. around a larger circle
-extrude circles with extruded command of rh
- Reconstruct surfaces with rebuild of rh
- in the illustrated case, the reconstruction is grade 1 - v 12 -u6
-convert all sup. in ts
- with the torci command of rh agisci on all points of the sup ts
and start to twist, along a dorsal of your liking, preferably
slightly disconnected from the internal cylinder axis
-I would create a gage that could deform your object
impose a box and control points of the deformation cage
I used 6 pt x - 6 pt y - 6 pt z
-acting with wheel scale and move on cage control points
further deform surfaces... .

The example shown is just an approach, for example I used
only 24 circles to be extruded, but in reality they want more,
to achieve an effect with greater credibility ....
certainly it will take endurance and patience to get that
that you have in mind... but never discourage
greetings and good work
to the

 

[PaoloColombani]

Just as an idea, should you do something about that?

 

[pongomarco]

@paolocolombani : exact :d:d only that much more "striped" as you did to realize it? It's the casual effect I'm looking for!

@alpole : thank you very much for your propositions I have been very helpful to find a rough solution to do it, I have not rhino available at this moment, but as soon as I can post the photos! Thanks again:

 

[PaoloColombani]

@paolocolombani : exact :d:d only that much more "striped" as you did to realize it?

Perhaps it is more difficult to explain in words than to do it. I attach two images, from there you can see that I set three sections of the cylinder; the central one I rebuilt it by choosing 20 points and placing the grade of the 5 curve, then I moved the control points so as to get that irregular effect.
follows the construction of the surface through a loft (first surface from the left), and then the twist (second surface) that can be done through the shift command or manually rotating the surface control points. to avoid or limit the effect of the strition at the center of the cylinder simply increase the number of knots in the axial direction and then perform the twist (third surface).

this is just a quick example, but playing on similar maneuvers you can get any desired effect.

 

[alpole]

nice paolo solution,bravo. .:finger:
I had equivoted thinking about one
rigged by so many filaments
to the

 

[pongomarco]

I wanted to thank everyone for the help you gave me!
I finally managed to realize what I wanted!
Paolocolombani I used your method and it works fine! I made uba only modification: to avoid having "points" where the fabric overlaps, as in the 3 cylinder of paolocolombani, I rotated in later view the circles and then carried out a vertical loft.
in following the torsion you have a more mordious effect on the sides.

 

[PaoloColombani]

Congratulations, beautiful effect!
I'm glad to know that I was helpful.