William F Pokorny <ano### [at] anonymous org> wrote:
> I need to better understand the gradient calculation method(a)
> (a) There is a similar method used to calculate isosurface normals.
No ... if you're talking about the
* FUNCTION
*
* IsoSurface_Normal
in isosurface.cpp, in source/core/shapes,
that looks like just regular old forward-difference to calculate a function
gradient.
> > https://news.povray.org/5c45e632%241%40news.povray.org
>
> I don't remember reading that particular post - thanks.
Certainly. I stumbled across it while trying to find one of my other posts.
- BW
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