Op 30-4-2021 om 03:25 schreef Bald Eagle:
> "Bald Eagle" <cre### [at] netscapenet> wrote:
> 
>> I'm thinking of doing the shell and the chambering all in one go with something
>> like the attached.   It seems like a perfect use for the ovus {} object, if it
>> gets hollowed out with a rounded cone first.   Then they'd all nest together.
> 
> A quick cobbling together of an ovus with an ellipsoid subtracted away.
> The shell itself renders fairly quickly, the difference to show the cross
> section was _slow_ (6.5 min.)
> 
> Parameterizing this would be challenging, to get the spiral tightness and
> spacing correct while keeping the chambers properly spaced and angled the right
> way...
> 
Good try. Interested to see how this would show in a rock slab.

I found my old program: Helixir, from the 1990's. Saves mesh{} files but 
not yet sure if it will do.

-- 
Thomas

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