POV-Ray : Newsgroups : povray.binaries.images : 720 cube-walks 61KBbu Server Time
19 Nov 2024 18:29:14 EST (-0500)
  720 cube-walks 61KBbu (Message 1 to 5 of 5)  
From: Philippe Debar
Subject: 720 cube-walks 61KBbu
Date: 8 Nov 2001 18:20:08
Message: <3beb1328@news.povray.org>
Don't know why I had the strange urge to make this image.

The 720 ways to join the opposite corners of a cube by going through every
vertex. (Yes, there are symetries and, yes, there are lines crossing within
some permutations... still have to find an elegant way to solve these.)

(Pity the image compresses so badly, I really had to squeeze it)

Povingly,

Philippe


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From: David Fontaine
Subject: Re: 720 cube-walks 61KBbu
Date: 8 Nov 2001 23:19:23
Message: <3BEB5A0F.6F34925B@faricy.net>
Unusual.  Cool.

I was going to ask if you are allowed to go through the center of the
cube to an opposite corner, but I should realize that 720 is 6!, so
yes.  :)

Now find the number such that a path can't intersect itself. ;)

-- 
David Fontaine  <dav### [at] faricynet>  ICQ 55354965
My raytracing gallery:  http://davidf.faricy.net/


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From: Steve
Subject: Re: 720 cube-walks 61KBbu
Date: 9 Nov 2001 07:56:55
Message: <slrn9unkct.sda.steve@zero-pps.localdomain>
On Fri, 9 Nov 2001 00:15:40 +0100, Philippe Debar wrote:
>Don't know why I had the strange urge to make this image.
>
>The 720 ways to join the opposite corners of a cube by going through every
>vertex. (Yes, there are symetries and, yes, there are lines crossing within
>some permutations... still have to find an elegant way to solve these.)

Noodeles of the Borg:-) 

--
Cheers
Steve              email mailto:ste### [at] zeroppsuklinuxnet

%HAV-A-NICEDAY Error not enough coffee  0 pps. 

web http://www.zeropps.uklinux.net/

or  http://start.at/zero-pps

 12:52pm  up 32 days,  4:34,  1 user,  load average: 1.00, 1.00, 1.00


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From: Philippe Debar
Subject: Re: 720 cube-walks 61KBbu
Date: 11 Nov 2001 17:09:10
Message: <3beef706@news.povray.org>
"David Fontaine" <dav### [at] faricynet> wrote in message
news:3BEB5A0F.6F34925B@faricy.net...
> Unusual.  Cool.

;-)

> I was going to ask if you are allowed to go through the center of the
> cube to an opposite corner, but I should realize that 720 is 6!, so
> yes.  :)
>
> Now find the number such that a path can't intersect itself. ;)

I count 486 of them. (Actually my pov-code counts them, I just repeat
dumbly... Humans don't do mistake, they merely do whatever the computers
tell them.)

I currently believe that there are 81 different paths, the others are just
rotations/symetries of these.


Povingly,

Philippe


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From: David Fontaine
Subject: Re: 720 cube-walks 61KBbu
Date: 11 Nov 2001 22:59:41
Message: <3BEF49EB.5F03CE6@faricy.net>
Philippe Debar wrote:
> 
> ;-)
> 
> > Now find the number such that a path can't intersect itself. ;)
> 
> I count 486 of them. (Actually my pov-code counts them, I just repeat
> dumbly... Humans don't do mistake, they merely do whatever the computers
> tell them.)
> 
> I currently believe that there are 81 different paths, the others are just
> rotations/symetries of these.

486 divided by three rotations, two reflections, that seems to be right.

I think there's 72 if you are confined to the surface of the cube, no
going to the opposite corner.

-- 
David Fontaine  <dav### [at] faricynet>  ICQ 55354965
My raytracing gallery:  http://davidf.faricy.net/


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