"Bald Eagle" <cre### [at] netscapenet> wrote:
> Nice work puzzling this out, Kenneth  :)
> I haven't had a chance to render this one yet.
>
>
> Take a look at this thread where I explored this problem, and clipka gave a very
> thorough explanation and solution.
>
>
http://news.povray.org/povray.binaries.images/thread/%3Cweb.57a7e643418f435e7df57c0%40news.povray.org%3E/
>
> So, I'd set your pigment values with an equation, such that the sum of each term
> never exceeds one.
>
> You may also try using the clock to control the highlights - switch one off at
> some critical fading value, and the other one on when it's starting to become
> visible enough, then increase the values linearly increasing from zero to max
> over the remaining clock cycle.


rendered the objects separately and composited the images with ImageMagick.  At

https://drive.google.com/open?id=1lCNP0vkWbThhkJKv_WktTHJfbAyM-Aw9

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