Hello, sorry noob question, but I divided this object in to parts that I want to squish.
I transformed the Sub D to NURBS, but the individual parts are now polysurfaces, that don’t squish.
How can I get surfaces, instead of polysurfaces?
Thank you
deel 2 renew.3dm (5.3 MB)
1 Like
what are you gonna do with the squished pattern ?
the simplest approach you can do is to create a Mesh that is within your tolerances
_mesh
and then
_squish
this mesh.
you should also be able to mostly get surfaces by
_toNurbs
make sure to use the “packed” option.
finetune the result for the circular part with
_srfSeam
you might need 2 versions with different seams - to have single surfaces for most of your parts.
hope this helps - kind regards -tom
Thank you for your response. I will use the squished pattern as a sewing pattern.
Unfortunately, I cannot get it done with your advice. when I transform the SubD shape into NURBS (“packed”) I end up with polysurfaces that I cannot squish. Same with the mesh option.
I start with the total shape ( the bended tube), and use this construction of different planes to cut the tube into the individual shapes that I want to squish.
I want these parts to be surfaces, but how. What am I doing wrong?
deel 2 reneww.3dm (6.2 MB)
toNurbs with packed will give 2 Surfaces.
some of your “patches” will have the surfaces - seam dividing it:
with
_srfSeam
you can redefine the Seam
now those elements are single surfaces
you might need 2 or 3 versions of the inital suface and adjust the seam so it s not in the way.
deel 2 reneww_tp_rh7.3dm (820.9 KB)
Thank you again Tom_P, for your expalnation.
Unfortunately, I just cannot get it done. (The _SrfSeam aks for a polysurface that is closed in one direction?). Stupid thing is that I have processed the other half of my project in the exact same way ( from SubD to NURBS and then split) and ended up with trimmed surfaces. Or at least I thought I did, but I cannot reproduce it. I think I am just overlooking a small detail in the settings, but I just can’t find what it might be.
The right tube(top figure) are trimmed surfaces, But how to split the left part of the tube and get squishable surfaces?
Anyway thank you again for time & patience
2 tubes divided.3dm (3.0 MB)
for sure you used _toNurbs with “packed” option on.
_explode the result - now you have 2 surfaces
duplicate them
_srfSeam on the duplicated surfaces
for each pattern choose a surface without the seam.
???
Hi @Lucas_Kastelijn
I assume you want to squish the shape to fabricate it. May I ask what kind of material and which techniques you want to use?
Jess
Yes Tom_P. This will do it.
Thanks for pulling me loose 
@Jess Im am constructing an art piece. The material I use is half transparent construction film (150ug). I sew them together. I was looking for a more random illogical way for the patterns, because I want for a more ‘crafty’ look.
Hi Lucas,
a crafty way to make that would be to categorize and split the sewing patterns by surface curvature. Here shown developable (green), negative (blue) and positive (red).
The green parts have least deformation, the blue ones can be made from hyperbolic patches (tension frames), and the for red ones you need some plug shape. With some heat it should be possible to bring these into shape.
deel 2 reneww jM.3dm (1.7 MB)
Edit: The green part I would make from two “curved” pieces.
Jess
I think the false color display of _curvatureAnalysis (Gaussian Curvature) is not a great idea to be used for a cutting pattern. ( @Jess )
I think it s important to have a cutting-pattern that minimises waste - and straight seams are easier to produce.
squish will give you some feedback on Expansion / Compression - look at those values.
check the settings for squish ( free, Strech mostly … compress only)
do a test-piece to figure out a good amount of Expansion / Compression that can be handle with your material, sewing technique, the amount of crinkles you can accept in the piece, …
good luck with your project
kind regards - tom
Hi Tom,
From the fabrication point of view (pre-deforming of the compound curvature patches) this makes most sense. Then you get just two different types with more or less homogeneous curvatures. Of course all these areas can be split into “more random illogical patterns”.
Jess
Thanks! interesting ideas! Will keep them in mind.