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12 May 2024 07:16:25 EDT (-0400)
  Cube (Message 1 to 8 of 8)  
From: Tim Attwood
Subject: Cube
Date: 16 Nov 2009 21:43:51
Message: <4b020de7@news.povray.org>
Abstract cube.


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From: Christian Froeschlin
Subject: Re: Cube
Date: 17 Nov 2009 10:09:43
Message: <4b02bcb7@news.povray.org>
Funny I also played around with a semi-transparent cube last night.
Were you by chance trying to make a "jelly" cube? ;) (see p.newusers)


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From: Tim Attwood
Subject: Re: Cube
Date: 17 Nov 2009 15:19:39
Message: <4b03055b$1@news.povray.org>
"Christian Froeschlin" <chr### [at] chrfrde> wrote in message 
news:4b02bcb7@news.povray.org...
> Funny I also played around with a semi-transparent cube last night.
> Were you by chance trying to make a "jelly" cube? ;) (see p.newusers)

Yeah, this looks a little more like water than jelly though. =(


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From: Christian Froeschlin
Subject: Re: Cube
Date: 17 Nov 2009 18:41:31
Message: <4b0334ab@news.povray.org>
Tim Attwood wrote:

> Yeah, this looks a little more like water than jelly though. =(

It may hard to get something to look like jelly and allow
to see the background through it as requested ;) My version
ended up mostly opaque and with dubious inner reflections.


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From: PM 2Ring
Subject: Re: Cube
Date: 18 Nov 2009 10:50:01
Message: <web.4b0416847e0782c5f4c648ed0@news.povray.org>
I was playing with translucent cubes recently. : The cubes of side 1, 1/2, 1/3.
1/4, etc can be stacked to give a tower of any height, but they collectively
have a finite surface area (pi squared) and volume (zeta(3)).

Here are the first few of these cubes, in coloured glass, with pseudo-HDRI
lighting.


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From: Thomas de Groot
Subject: Re: Cube
Date: 19 Nov 2009 03:58:09
Message: <4b0508a1$1@news.povray.org>
"PM 2Ring" <nomail@nomail> schreef in bericht 
news:web.4b0416847e0782c5f4c648ed0@news.povray.org...
>I was playing with translucent cubes recently. : The cubes of side 1, 1/2, 
>1/3.
> 1/4, etc can be stacked to give a tower of any height, but they 
> collectively
> have a finite surface area (pi squared) and volume (zeta(3)).
>
> Here are the first few of these cubes, in coloured glass, with pseudo-HDRI
> lighting.
>

oooh! very nice.

Thomas


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From: PM 2Ring
Subject: Re: Cube
Date: 21 Nov 2009 12:10:02
Message: <web.4b081e217e0782c5f4c648ed0@news.povray.org>
"Thomas de Groot" <tDOTdegroot@interDOTnlANOTHERDOTnet> wrote:
> "PM 2Ring" <nomail@nomail> schreef in bericht
> news:web.4b0416847e0782c5f4c648ed0@news.povray.org...
> > Here are the first few of these cubes, in coloured glass, with pseudo-HDRI
> > lighting.
> >
>
> oooh! very nice.
>
> Thomas

Thanks, Thomas! It's great to see you are still here ray-tracing.

I've been learning more about Linux & have even done a little bit of X windows
programming in C. But most of my programming lately has been in Python, which is
great fun. I haven't used Python much in conjunction with POV-Ray, but as I
mention in the Mandelbulb thread "'Accidental" Isosurface", I was using Python
to generate Mandelbulb data, although I translated my program to C today for
reasons of speed.

Most of my ray tracing in the last few years has been to create geometric
diagrams. Like this illustration of the equation xy + yz + zx = 0, which is a
double cone centred on the x+y+z axis. The surface only passes through the

(obviously) divide it symmetrically. This diagram looks best when rotated, but
the anim is a bit large to post here.

The cubes use the default ior of 1.0, since I didn't want any distortion. I used
the ancient quadric{} object for this surface; it was the natural choice, given
its equation. I don't think I've used quadric directly since the days of
DKBtrace! :)


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From: Thomas de Groot
Subject: Re: Cube
Date: 22 Nov 2009 03:39:22
Message: <4b08f8ba@news.povray.org>
"PM 2Ring" <nomail@nomail> schreef in bericht 
news:web.4b081e217e0782c5f4c648ed0@news.povray.org...
> "Thomas de Groot" <tDOTdegroot@interDOTnlANOTHERDOTnet> wrote:
>> "PM 2Ring" <nomail@nomail> schreef in bericht
>> news:web.4b0416847e0782c5f4c648ed0@news.povray.org...
>> > Here are the first few of these cubes, in coloured glass, with 
>> > pseudo-HDRI
>> > lighting.
>> >
>>
>> oooh! very nice.
>>
>> Thomas
>
> Thanks, Thomas! It's great to see you are still here ray-tracing.

Thanks! I have no intentions to leave soon :-) and it is nice to see some of 
your work again. You have been silent for some time on the POV-side of 
things...

I am very interested in the mandelbulb thing you and others are exploring. I 
am not a programmer, so I just keep droping my jaw at the images. But I see 
high potentials for stunning landscapes and such.

Thomas


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