Logarithmic spirals, golden ratio script for curve or mesh

Support Modeling
1

I’m looking for an addon that lets me create logarithmic spirals with the “golden ratio” or just any sort of screw modifier for curves or meshes that lets me put in mathematical values to achieve something near the golden spiral.

I’d like to be able to model something like this seashell:


But I want it to be created mathematically so that I can extend the spiral in both directions just like with an array.

I haven’t yet dealt with any python scripting, so I would be happy if anyone could point me to an existing script or addon for Blender 2.6x. Thanks.

1 Like
2

Thanks a lot! Your script works like a charm and it has more spiral functions than I knew existed, so there should be everything I need. I’ll message you, if I find anything to add. :slight_smile:

3

it is still a WIP i have to add some other spirals i found later on

have fun with spirals
and show us what you do with it

happy cycles

4

You might try PhiMatrix (www.phimatrix.com) as it has golden spirals among its dozens of other overlays based on the golden ratio or custom ratios.

5

you should do this quickly with an array. I suppose.

6

@ @Xarbrough

if you need a specific sea shell

give me the name
i have some other scripts somwhere to do many kind of seashell
i can check if i have the model you need!

salutations

7

Thanks guys for all the advice, but Rickys initial script does a perfect job for my needs. The seashell was only one example and I could achieve it with two simple log spirals and some quick filling-in by hand.

@Ricky: Of course, if you have some scripts finished for whatever kind of shells, I’d be interested to have a look at them; so if you’d like to share them online, go ahead, but don’t feel urged, since your other script was very good already. :slight_smile:

So for the moment I have everything I need, but the Phimatrix did sound interesting, too.

8

This script seems so awesome I must try, yet it’s no longer linked here?? Want to test with Eevee too!

9

what do you mean ?
was it loss in the forum transfer ?

I nave not done it yet for 2.8
which has a different API and need some corrections
so this might take some times before I can learn it and do it!

happy bl

10

Hi! Would you please re-share this script? I don’t see it here.

Thanks !
Lextej

11

@Lextej
did you find it

i think i got something for 2.8 but not yet for BL 3.5
it 'is getting hard to keep following all the new BL version LOL

at worst you can use the older version and get the right BL version
should still work fine

happy bl

12

Where Am I supposed to find it?

13

same place as before

WIP for spiral and Helix 2D and 3D - Artwork / Works in Progress - Blender Artists Community

this was done early around 2.7
but i tested it in 2.79 and seems to work fine

try it and let me know

happy bl