On 5/29/24 06:54, Bald Eagle wrote:
> You can invert anything, even whole patterns, like so:

Thanks for posting more detailed code. I played a little - and it's cool 
- though the results kinda twist my head around at times. :-)

Attached is a slice of a sphere to the -z side of the x,y plane where 
the radius of a f_sphere() is getting 'inverted / chopped' with your 
'Checker_Inv()' (I also clamped the maximum Inversion() value to 15). 
The sides sliced at the inversions don't render cleanly with the 
isosurface, but we still end up with an interesting looking shape.

A little surprised it worked as well as it did...

Bill P.

FYI. I did get a few divisions by zero from Inversion() until I added 
some off grid, anti-directional, numerical fuzz to CenterX, CenterY and 
CenterZ. This might be due how my yuqk AA works compared to the 
officially released AA.

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