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Bill Pragnell wrote:
Very cool.
On a vaguely related note, I onetime wrote something to produce tiled
"Mosiacs" (or even patio stones) in circular bands. What drove the idea
was to use eval_pigment() to have the mosaic pieces reproduce an
underlying image. I was using fixed sized square tiles. It involved
calculating the number of tiles necessary at each circumference. If
there was a "reminder" it was averaged among the grouts between all the
tiles. But for the innermost rings, the pinched looking grouts did not
seem realistic so I produced angular tiles like in your arches for inner
rings. But I could never decide what a real mosaic would do. It would
seem unlikely that tiles would be cut at the slight angles necessary on
the outer rings. I couldn't decide about the inner rings. What I could
never solve, also, was any sort of central "plug" arrangement other than
having a large circular tile. Wondering if you have ever approached
this problem?
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Jim Charter wrote:
example each way
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"Jim Charter" <jrc### [at] msn com> schreef in bericht
news:44e4ac95$1@news.povray.org...
> Bill Pragnell wrote:
> Very cool.
>
> On a vaguely related note, ...
Which reminds me of my failed attempts a couple of years ago, to reproduce
arcs...
Thomas
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Jim Charter <jrc### [at] msncom> wrote:
> seem realistic so I produced angular tiles like in your arches for inner
> rings. But I could never decide what a real mosaic would do. It would
> seem unlikely that tiles would be cut at the slight angles necessary on
> the outer rings. I couldn't decide about the inner rings. What I could
> never solve, also, was any sort of central "plug" arrangement other than
> having a large circular tile. Wondering if you have ever approached
> this problem?
I haven't. But, looking at your images, I would say the first one (angular
inner tiles) looks the best. A quick scout around on Google Images turns up
nothing conclusive, because in real decorative mosaics the tiles generally
seem to be aligned with the edges in the actual design (try and automate
that!). The few regular circular patterns I did turn up seem to vary in
approach. Mosaic builders might not cut precise angles in every tile, but
they'd probably do it at least approximately for the inner rings. As for
plugs... one big circle? Four triangles approximating quadrants of a
circle? A drain cover?
I am suddenly reminded of the scene in Monty Python's Life of Brian, when
the PFJ sneak into Pilate's residence via the sewers, emerging from under a
fig leaf covering the genitals of a male figure in a giant floor mosaic.
"Stop! Stop! We must unite against the common enemy!"
"The Judean People's Front?"
"No! No! The ROMANS!"
B
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"Bill Pragnell" <bil### [at] hotmailcom> wrote in message
news:web.44e43abb4f0e252c731f01d10@news.povray.org...
> Right, here's the macro.
> .. snip ..
> Bill
>
Thanks Bill,
Makes a nice tunnel too and only took 50 seconds to render (without
radiosity and just a simple agate normal)
Regards,
Chris B.
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