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From: Bill Pragnell
Subject: the Johnson solids
Date: 12 Jul 2009 16:00:01
Message: <web.4a5a3f1e91c52d6cf6ec10440@news.povray.org>
So, the next batch of polyhedra. This little lot are the Johnson solids,
basically all the convex polyhedra composed only of regular polygons, that
aren't either Platonic or Archimedean solids. There's 92 of them, so I thought
the best way to show them off equally was another overhead view, in a spiral
pattern this time. Rather than use the glass again, I thought I'd go for a
polished stone look... mostly successful, I think.

(took 140 hours to render at 2000x2000 - eek!)

Bill


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From: Christian Froeschlin
Subject: Re: the Johnson solids
Date: 12 Jul 2009 19:14:00
Message: <4a5a6e38$1@news.povray.org>
Bill Pragnell wrote:

> So, the next batch of polyhedra.

Very nice! You don't tire easily, do you? ;)


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From: Paul Fuller
Subject: Re: the Johnson solids
Date: 13 Jul 2009 00:43:13
Message: <4a5abb61@news.povray.org>
Bill Pragnell wrote:
> This little lot are the Johnson solids,
> basically all the convex polyhedra composed only of regular polygons, that
> aren't either Platonic or Archimedean solids.
> 

And also not the prisms and anitprisms.


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From: Bill Pragnell
Subject: Re: the Johnson solids
Date: 13 Jul 2009 04:05:00
Message: <web.4a5aeaa776bf31cf6dd25f0b0@news.povray.org>
Christian Froeschlin <chr### [at] chrfrde> wrote:
> > So, the next batch of polyhedra.
>
> Very nice! You don't tire easily, do you? ;)

Well, this is mostly automated conversion, with tweaking. I can chip away at it
over weeks, and occasionally take a break for a nice render. Quite a restful
project really! :-)


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From: Bill Pragnell
Subject: Re: the Johnson solids
Date: 13 Jul 2009 04:10:01
Message: <web.4a5aeb7376bf31cf6dd25f0b0@news.povray.org>
Paul Fuller <pgf### [at] optusnetcomau> wrote:
> Bill Pragnell wrote:
> > This little lot are the Johnson solids,
> > basically all the convex polyhedra composed only of regular polygons, that
> > aren't either Platonic or Archimedean solids.
>
> And also not the prisms and anitprisms.

Ohyes, whoops, thank you.

If I include them I'll probably write a single algorithmic macro... but they're
not as interesting as the 59 icosahedra, so they'll have to wait :-)


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From: Paul Fuller
Subject: Re: the Johnson solids
Date: 13 Jul 2009 05:36:41
Message: <4a5b0029@news.povray.org>
Bill Pragnell wrote:
> 
> Ohyes, whoops, thank you.

I only mentioned it because I initially thought you had missed them. 
After all they are convex polyhedra composed of only regular polygons.

Then I found that the Johnson solids exclude them for a good reason.

> 
> If I include them I'll probably write a single algorithmic macro... but they're
> not as interesting as the 59 icosahedra, so they'll have to wait :-)
> 
> 

Don't try to include them all or your parse time will be ... excessive.

Still a nice image of a double spiral of prism / antiprism pairs 
spiralling outwards would add nicely to your zoo.

Keep up the good work.


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From: Bill Pragnell
Subject: Re: the Johnson solids
Date: 13 Jul 2009 06:50:00
Message: <web.4a5b10f676bf31cf6dd25f0b0@news.povray.org>
Paul Fuller <pgf### [at] optusnetcomau> wrote:
> Don't try to include them all or your parse time will be ... excessive.

Hehe, nice euphemism.

> Still a nice image of a double spiral of prism / antiprism pairs
> spiralling outwards would add nicely to your zoo.

Good idea. Consider it on the list ;-)


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From: Thomas de Groot
Subject: Re: the Johnson solids
Date: 13 Jul 2009 08:08:31
Message: <4a5b23bf@news.povray.org>
"Bill Pragnell" <bil### [at] hotmailcom> schreef in bericht 
news:web.4a5a3f1e91c52d6cf6ec10440@news.povray.org...
> So, the next batch of polyhedra. This little lot are the Johnson solids,
> basically all the convex polyhedra composed only of regular polygons, that
> aren't either Platonic or Archimedean solids. There's 92 of them, so I 
> thought
> the best way to show them off equally was another overhead view, in a 
> spiral
> pattern this time. Rather than use the glass again, I thought I'd go for a
> polished stone look... mostly successful, I think.
>
> (took 140 hours to render at 2000x2000 - eek!)
>
> Bill
>

Oh, to let those shiny little things run tinkling through one's fingers.... 
More! I want more!

This is going to be an impressive collection, Bill.

Thomas


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From: Warp
Subject: Re: the Johnson solids
Date: 13 Jul 2009 10:22:42
Message: <4a5b4332$1@news.povray.org>
I liked the other image more... It had that "wow!" factor to it.


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From: TC
Subject: Re: the Johnson solids
Date: 14 Jul 2009 04:23:38
Message: <4a5c408a$1@news.povray.org>
Well, this picture just isn't as sparkly since the textures are "just" 
jadestone or marble... I guess if you would change the texture to 
transparent glass with high refractive index they would look more 
spectacular.

But let us be glad that not every stone is a sparkling diamond...  it would 
become boring after a while.

So: well done! I am looking forward for more :-)

"Warp" <war### [at] tagpovrayorg> schrieb im Newsbeitrag 
news:4a5b4332$1@news.povray.org...
>  I liked the other image more... It had that "wow!" factor to it.


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