A challenge for YOU because I'VE gone mad!

I'm in need of a prim in the shape of a pringle chip... yes, a PRINGLE CHIP. Trying to get that shape has made me and a couple of my friends run around in circles, arms waving in the air, and screaming obsenities for the past couple of days.
Can someone please help us with this... or perhaps in a couple more days you'll see us strapped in staight jackets, rocking back and forth while singing, "My bologna has a first name it's O S C A R...."

Thank you for letting me vent a little...

*hugs*

Jenee

u tried starting with a sphere and dimpling it first then change to nother lock from there ect? some times it may work

my first stab would be to use a toroid, not being in world to experiment however: hollow it 95, cut it maybe .4 and .6, and advance cut it to open the inside of the ring. flatten it out some and continue to fiddle with the options.

will be hard to get something as naturally curving in one prim though

I could fake it by using a trexture with transparency on a torus... would that be good enough?

Ah, they Hyperbolic Paraboloid, how you vex me so.

Thanks guys, I've tried again today and got it pretty close... but *sigh* no such luck. I had to use like 10 prims and in the end the pringle looked like it had some sort of disease.
Oh well, if you have any more ideas let me know but for now I think I'm gonna scratch that project and start on the next.

Jenee

Pringles chips are negatively curved. As far as I'm aware, the only way to get such in SL is the inner curve of a torus, and if you make cuts and so on you'll get 90 degree corners. You might be able to rig something up with using bits of spheres to cap off the ends...

This might actually be a place to apply Jeffrey's mesh importer.

Tried this. Seems to work okay. But I guess Jenee wanted a Pringle shaped prim. Not a Pringle per se.

Seifert, what's the correct term for the saddle-shaped singularlity?

I'm not entirely sure what you mean by "singularity" here - with a surface like z=xy (a model is viewable at the Grignano Art Gallery) there's a saddle shape, but no discontinuity and the surface is smooth. The shape itself is just called a "saddle".

I believe its called an anticlastic surface (axes on surface bend in counter directions).
Things like domes are called synclastic surfaces (both axes of the surface bend in same direction)

you can do it with a torus.. IF you have a circular (alpha'd) texture....

photos to follow:


Can't make it "thick" though.

Final model specs:

Object:

Object type: Torus
Size: x 0.129 Y 0.500 Z 0.500
Rotation: x 0.000 y 0.000 z 0.000
Path Cut: b 0.650 e: 0.850
Hollow: 95
Profile Cut: b 0.00 e 0.50

(all other object specs default)

Texture: (external)

Repeats per face: U 5.00 V 2.00
Rotation: -90
Offset: U 0.250 V 0.50

Texture: (internal)

Repeats per face: U 5.00 V 2.00
Rotation: -90
Offset: U 0.250 V 0.50