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Hi all,
for my first "publication" I give you something slightly more complicated
than a reflecting sphere ...
... but at least it's hovering over a checkered plane ;-)
Enjoy ?! Comment ?!
Karl
--
The two most common things in the universe are hydrogen and stupidity.
(H.Ellison)
Post a reply to this message
Attachments:
Download 'dodecube.mpg' (609 KB)
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> Hi all,
>
> for my first "publication" I give you something slightly more complicated
> than a reflecting sphere ...
>
> ... but at least it's hovering over a checkered plane ;-)
>
> Enjoy ?! Comment ?!
Nice! Was this done using Pov-Ray mesh or something entirely different?
Post a reply to this message
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"Karl J. Anders" wrote:
>
> Hi all,
>
> for my first "publication" I give you something slightly more complicated
> than a reflecting sphere ...
>
> ... but at least it's hovering over a checkered plane ;-)
>
> Enjoy ?! Comment ?!
>
> Karl
> --
> The two most common things in the universe are hydrogen and stupidity.
> (H.Ellison)
That's a very nice illustration of a possible construction of the
dodecahedron starting with a cube: on each face of the cube you put a
pyramid and those pyramids are transformed into the "roofs" as already
mentioned by Euclid to construct a dodecahedron. I also like the
texture.
I have something likely (although using the "roofs" without the pyramids
and with a simple texture) as a logo on my homepage and further on my
website.
Friendly greetings,
--
Herman Serras
Gent (Belgium)
http://cage.rug.ac.be/~hs/
Post a reply to this message
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From: Karl J Anders
Subject: Re: polyhedron deformation (mpg1, 612kb)
Date: 12 May 2002 03:59:47
Message: <3cde20f3@news.povray.org>
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Im Beitrag <3cde0f34$1@news.povray.org>, "Thomas Lake"
<tla### [at] REMOVE-THISshaw ca> schrieb:
>
> Nice! Was this done using Pov-Ray mesh or something entirely different?
>
>
Hi Thomas,
just like the regular polyhedra in some include file coming with POV, the
main body is an intersection of planes.
I wrote a macro that is passed an array[] of points and computes the planes
that, when INTERSECTIONed result in the "convex hull" of those points ...
... or to put it more clearly: give the vertices of a ( convex, NO HOLES )
polyhedron and get back the faces as planes.
Got a few more little ideas of that kind, but because of
a) attacks of real life ( my 16 months old daughter )
b) beta testing Rune's particle system
c) thinking about quaternions ( see p.g/"julia math ...")
they will have to wait a while ...
Stay tuned !
( and, before anybody asks: for the same reasons that macro won't be
published soon, because it needs polishing before - but it WILL be
published, if anybodys's interested )
Greetings
Karl
--
The two most common things in the universe are hydrogen and stupidity.
(H.Ellison)
Post a reply to this message
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Im Beitrag <3CDE1D1F.52D06C80@pandora.be>, Herman Serras
<Her### [at] pandorabe> schrieb:
> I have something likely (although using the "roofs" without the pyramids
> and with a simple texture) as a logo on my homepage and further on my
> website.
Yep. Been there before and loved it. One of your links gave access to a list
of coordinates for the dodecahedron in that orientation ;-)
Mathematical greetings
Karl
--
The two most common things in the universe are hydrogen and stupidity.
(H.Ellison)
Post a reply to this message
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From: Karl J Anders
Subject: Re: polyhedron deformation (mpg1, 612kb)
Date: 12 May 2002 04:38:27
Message: <3cde2a03@news.povray.org>
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Im Beitrag <3CDE1D1F.52D06C80@pandora.be>, Herman Serras
<Her### [at] pandorabe> schrieb:
>
> That's a very nice illustration of a possible construction of the
> dodecahedron starting with a cube: on each face of the cube you put a
> pyramid and those pyramids are transformed into the "roofs" as already
> mentioned by Euclid to construct a dodecahedron. I also like the
> texture.
I forgot to add that I liked second best ( besides showing Euclid's
construction ) that it illustrates that you can transform the rhombic
dodecahedron into the regular dodecahedron by just tilting the planes a bit
around the edges of the inscribed cube ...
Mathematical greetings ;-)
Karl
--
The two most common things in the universe are hydrogen and stupidity.
(H.Ellison)
Post a reply to this message
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From: Karl J Anders
Subject: Re: polyhedron deformation (mpg1, 612kb)
Date: 15 May 2002 15:30:51
Message: <3ce2b76b@news.povray.org>
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Hi again,
first of all I want to say sorry that I didn't reply again for a while, but
I has a serious attack (really!) of real life : ANTZ ! :-[ (NOT the movie,
the real stuff !) Took me quite a while to find their little openings in the
wall - but that's a story for another newsgroup.
Second I would like to say a big SORRY again, because I feel my previous
replies might possibly have sounded a bit arrogant. If so, I want to
apologize.
So I want to say a big THANK YOU to those who commented on (and liked) my
animation. I regret that I can't accept the compliments on the texture, as
Herman's <Her### [at] pandorabe>
> I know that my texture isn't as good as in your animation:
because that texture is straight from POVs (3.1) manual, chapter 2.7.3.4
"using iridescence" - I just changed the color.
I just found out that there are ( of course there are !) better methods for
finding the complex hull than the brute force approach I used, but I have to
admit that I don't understand most of the articles I found on the net so
far. Live and learn (sigh) ...
Greetings
Karl
--
The two most common things in the universe are hydrogen and stupidity.
(H.Ellison)
Post a reply to this message
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