"Tor Olav Kristensen" <tor### [at] TOBEREMOVEDgmailcom> wrote:
> "Bald Eagle" <cre### [at] netscapenet> wrote:
>...
>
> Hi Bill
>
> It's a useful exercise you've started here.
>
> You may also want to have a look at the ReorientTransform() macro here:
> https://github.com/t-o-k/Useful-POV-Ray-macros/blob/main/vectors.inc


And for axis rotate, this is relevant:

https://github.com/t-o-k/Rodrigues-rotation-formula


--
Tor Olav
http://subcube.com
https://github.com/t-o-k

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