topic Re: more spiral curves in Maya Forum

more spiral curves

Anonymous — Thu, 19 Nov 2020 02:37:44 GMT

Hi, I'm trying to create spiral curve of extruded surface with many rotations, but number of rotations seem to be limited to around 2000 even though i used long cv curve using 12 pivots and small curve, which is not making enough spirals.

Anybody knows how i can make more spirals?

I'd like to avoid using polygon helix if possible.

Re: more spiral curves

daunish — Wed, 02 Dec 2020 15:48:25 GMT

So it looks like you're using a surface extrude and a circle curve. I reproduced your scene but had no issue overriding the extrude rotation value to 10,000 (didn't try higher). Silly question, but have you tried typing in a number over 2000?

If that still doesn't work could I recommend creating the spiral another way. I tried the twist deformer on an input curve with 156 cv's and I was able to override the end angle to 10,000 as well. This approach is nice because you can use the polygon extrude and don't need to convert the NURBS later. This workflow may not be feasible for your end goal.

Attachment: On the right is the NURBS extrude and on the left the poly extrude along a twisted curve (Forgive my awfully flat nurb, I rushed.)

Re: more spiral curves

Anonymous — Thu, 03 Dec 2020 03:07:20 GMT

Hi @daunish thanks for reply.

yes i did try over 3000 rotations but spirals break out then.

twisted curve is nice but i wanted to adjust curve after spirals created so i can use them as e.g. phone lines.

is it possible to ask for the scene file of spiral you created?

thanks again!

Re: more spiral curves

daunish — Thu, 03 Dec 2020 05:08:34 GMT

I kinda figured this would be the case and that you would need to use a NURBS extrude to get your shape.

I've attached a file where I overrode the values with polygon extrude and twist, and a curve extrudes and its rotation.

Might I also suggest the wire deformer if all else fails. Create the spiral shape you need and pose it with a curve after.

I hope this sheds some light on the problem as I'd love to know why you are hitting this limiting value!

Let me know, and good luck.

Re: more spiral curves

Anonymous — Tue, 08 Dec 2020 15:25:07 GMT

Sorry my reply was blocked somehow.

Anyway your scene file definitely helped me out, I succeeded to create something that I wanted after some trials and errors imitating yours.

I cannot say the exact reason why I was getting rotate number limitations but maybe it was from lack of curve point/ wrong placement of circle...

Thank you!