What functions use for have a sort of array curve smooth surface sinusA * by sinusB in one pass ?
All like Array curves, Network, Sweep etc... seems failed ?

here just discontinuous surfaces (on 2*8 waves) for show how must be the continuous surface (8*8 waves:)

Like this?

Yes exactly!
How do you made that?
All my try were very slow so I stop the process!
I remake your example with a sweep in a second!

But mine take I don't know how many time!

OK That works! I was not enough patient! (and I have put the twist = Flat !
Seems don't work with the twist = free form !

"Calculating"... Zzzz....

Is this simple approach not what is needed?

Brian

Thx for the effort Brian
Seems there are some sort of curves who don't arrive normaly to work with the Sweep
Michael will say to us why ;)

Hi Pilou - sweep rotates the profile as it travels along the curve, I don't think that's what you want for this case.

I think the one that Grendel showed was using Extrude with the Set Path option instead. That sort of more drags the profile along the path without rotating it to be perpendicular to the path, it probably does what you need here.

- Michael

With this particular curves Extrude with Set Path takes less smooth surfaces than Sweep with flat !

Hi Pilou - in your case each piece of your "sine wave" like curve is a full 180 degree arc.

That's a lot more exaggerated of a bulge than a normal sine wave curve.

If you make the bulge of each of your pieces less extreme you will likely get a less bulgy result...

With that large amount of bulging, it would produce a very complex sweep as it tries to rotate the starting shape along each of those exaggerated bulges... That's why some kind of non-rotating method is needed.

You can kind of see what you are asking it to do if you do Transform/Array/Curve on it to make some copies along the curve that are rotated, you'll see a result like this:






You can kind of get an idea there of how your profile curve will swing around as it is rotated along the path, then it tries to produce a surface through that...

- Michael

Swinging indeed like smoke simulation! :)

i was just playing with this for fun. you can truly sweep 1 segment and then array it.

edit: i think i might have done that with 'flat' sweep anyway. d'oh. :)

Yes it's the trick as show above ;)

Works pretty good with the extrude-path. Here is sin wave "amp=4 length=20 cycle=10 points=5"

Sorry. I just noticed your talkin about your "particular" curves. My bad.

Ack, this one broke flat sweep. Extrude path worked. Better stop now. :)

In fact seems nature of curves, & orientation are very sensitive!
this one works fine with Network! (5 seconds on a very old comput)
A small change and all works fine or not!
So a big training is necessary :)