POV-Ray : Newsgroups : povray.binaries.images : Paint : Re: Paint Server Time
27 May 2024 08:17:50 EDT (-0400)
  Re: Paint  
From: Chris R
Date: 16 Mar 2023 14:30:00
Message: <web.64135f23798070a51724f4fd5cc1b6e@news.povray.org>
"Bald Eagle" <cre### [at] netscapenet> wrote:
> "Chris R" <car### [at] comcastnet> wrote:
> > Thanks.  I'm thinking about how to incorporate knots that would be visible
> > through the paint...
> You could use a pattern or image_map to sample from and modify your paint layer
> according to that - have a function modulate the color or the difference of the
> paint layer.
> Apply filter or transparency to the top layer according to the intensity of the
> knot - maybe with a pattern mask or proximity pattern of some sort to keep the
> real-look.
> Use an average {} pigment pattern to work it in, along with the normal.
> That's all I've got so far before morning coffee   ;)

So here's a one-day attempt at getting visible knots and knot bleed, plus one of
the flakes of paint is now hanging on by a thread to the painted surface.  (Look
just up and to the right of the center of the top board).

The knot has both a physical implementation that causes it to push out from the
surface of the wood a bit, and a textural implementation that implements the
color bleed from the knot into the paint itself.  Right now the color bleed
matches the physical texture of the knot exactly, modulo some warp turbulence to
spread the color.

-- Chris R.

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