On 3/15/25 15:37, Cousin Ricky wrote:
> I came up with a method a few years ago.  It uses trace() to find the
> distance to the edge of an object from voxels in a vertical plane, and
> creates an image map with the desired gradient.  You can use the pigment
> function in an isosurface.
> 
>    https://github.com/CousinRicky/IsoBevelTut

Thanks for posting. Another interesting approach.

I started an effort to create image file based characters with gradients 
years ago by projecting a (parallel?) area light through each character 
onto a white plane. It looked like it might more or less work, but I got 
distracted...

Aside: There is in the yuqk fork the soft_object{} and hard_object{} 
patterns which use two different, on the fly, methods to create 
gradients for objects with a defined inside. At the start of the covid 
shutdown I posted an image that I think used the hard_object{} feature 
IIRC. Ah, found it:

https://news.povray.org/povray.binaries.images/thread/%3C5e95fae5%241%40news.povray.org%3E

Bill P.

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