Boy, I wish I could help you out here.  I have been trying for a different
effect but having simular problems.  the difficultie is how to make
different cells of the crackle pattern different valuse, but to have a
consistent value throughout the cell.  My ultimant conclusion was that to do
this one whould have to hand write the crackle function and abandon the POV
version.  If you can find a more elegant solution please let me know.

JFMILLER

"How Camp" <kro### [at] hotmailcom> wrote in message
news:3dee500c@news.povray.org...
> I recognize there have been questions from time-to-time in the newsgroups
> related to stained-glass windows.  As I've read through them, I've run
into
> some questions.  I'd like to create a stained-glass window based on an
image
> map I have.  In my simplistic approach, I thought of placing a transparent
> crackle texture over my image, and then somehow coloring each of the
> 'pieces' in the texture to be the dominant color below.  Once the image
was
> created, I could take the resulting output and use various filter values
to
> allow light to pass through certain glass more than others, etc.
>
> However, I'm not sure if this is really possible, or if it's the easiest
way
> to create this stained-glass effect.  Can one come up with a method to
> 'color in' a piece of the crackle pattern?
>
> My latest sad and sorry attempt is attached.  I need to somehow know what
> the color is behind each of these pieces.  The center color, average
color,
> whatever.  Something that allows me to transform each crackle 'piece' into
a
> solid color.
>
> I messed around a bit with some of the filters recently posted in p.b.i by
> Gena Obukhov (thanks!).  The result (second image showing square-ish
> patterns) is more like the effect I'm looking for, but I'd rather not have
> squares - the crackle pattern is more what I'm after.
>
> Er, so... anyone know how I can work out a similar effect?
>
>
>
>

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