POV-Ray : Newsgroups : povray.binaries.images : Dragonfly and Fibonacci (56k) Server Time
2 Oct 2024 22:27:27 EDT (-0400)
  Dragonfly and Fibonacci (56k) (Message 1 to 7 of 7)  
From: Alf Peake
Subject: Dragonfly and Fibonacci (56k)
Date: 2 Mar 2000 17:25:24
Message: <38beea54@news.povray.org>
Been playing with 2 subjects - glass blobs in megapov, and Fibonacci's Golden Ratio.
Put
them together here. Not easy finding a suitable background for glass stuff.

Took 2.5 hours with Celeron 500 and megapov for dos.

Alf

http://www.peake42.freeserve.co.uk/
http://ourworld.compuserve.com/homepages/Alf_Peake/


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Download 'Dragnfly.jpg' (56 KB)

Preview of image 'Dragnfly.jpg'
Dragnfly.jpg


 

From: Sigmund Kyrre Aas
Subject: Re: Dragonfly and Fibonacci (56k)
Date: 2 Mar 2000 18:04:28
Message: <38BEF381.1B99566D@stud.ntnu.no>
Very nice wings, although I doubt real wings would refract like this.

sig.

Alf Peake wrote:
> 
> Been playing with 2 subjects - glass blobs in megapov, and Fibonacci's Golden Ratio.
Put
> them together here. Not easy finding a suitable background for glass stuff.
> 
> Took 2.5 hours with Celeron 500 and megapov for dos.
> 
> Alf
> 
> http://www.peake42.freeserve.co.uk/
> http://ourworld.compuserve.com/homepages/Alf_Peake/
> 
>  [Image]


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From: Alf Peake
Subject: Re: Dragonfly and Fibonacci (56k)
Date: 2 Mar 2000 19:43:43
Message: <38bf0abf@news.povray.org>
Thanks comment. I used glass wings, with thickness. Caustics would not look right if a
plane or disc were used.

Alf


Sigmund Kyrre Aas <as### [at] studntnuno> wrote in message
news:38BEF381.1B99566D@stud.ntnu.no...
> Very nice wings, although I doubt real wings would refract like this.
>


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From: SamuelT 
Subject: Re: Dragonfly and Fibonacci (56k)
Date: 2 Mar 2000 22:05:52
Message: <38BF2E96.7BFC065B@aol.com>
Beautiful image.

Alf Peake wrote:

> Been playing with 2 subjects - glass blobs in megapov, and Fibonacci's Golden Ratio.
Put
> them together here. Not easy finding a suitable background for glass stuff.
>
> Took 2.5 hours with Celeron 500 and megapov for dos.
>
> Alf
>
> http://www.peake42.freeserve.co.uk/
> http://ourworld.compuserve.com/homepages/Alf_Peake/
>
>  [Image]

--
Samuel Benge

E-Mail: STB### [at] aolcom

Visit the still unfinished isosurface tutorial: http://members.aol.com/stbenge


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From: Peter Popov
Subject: Re: Dragonfly and Fibonacci (56k)
Date: 3 Mar 2000 12:25:54
Message: <23m=OJTmBEvmeWwcHjL9xrRNtC3t@4ax.com>
On Thu, 2 Mar 2000 22:12:04 -0000, "Alf Peake"
<alf### [at] peake42freeservecouk> wrote:

>Been playing with 2 subjects - glass blobs in megapov, and Fibonacci's Golden Ratio.
Put
>them together here. Not easy finding a suitable background for glass stuff.
>
>Took 2.5 hours with Celeron 500 and megapov for dos.

Very good!

A minor remark, though. I can not see the whole sunflower so I can not
tell, but in the real world, the number of left and right spirals in a
sunflower petal are always members of the Fibonacci sequence. Is this
what you're referring to?


Peter Popov
pet### [at] usanet
ICQ: 15002700


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From: Alf Peake
Subject: Re: Dragonfly and Fibonacci (56k)
Date: 3 Mar 2000 19:08:24
Message: <38c053f8@news.povray.org>
I was concentrating on the seeds, and the spiral patterns do not show very well here.
There is a 600*450 88k jpeg here which is better:
http://www.peake42.freeserve.co.uk/pix1/dragnfly.jpg
I believe the number of left and right seed spirals should be adjacent numbers in the
Fibonacci sequence.  I used phi=sqrt((5)-1)/2 to get seed angle and distance from
center.

I did hope no-one would count the petals but that was probably expecting too much on
this
server :-(
I'm one petal short of 89 as my ancient petals routine places them in pairs.

Alf


Peter Popov <pet### [at] usanet> wrote in message
news:23m=OJTmBEvmeWwcHjL9xrRNtC3t@4ax.com...
> On Thu, 2 Mar 2000 22:12:04 -0000, "Alf Peake"
> <alf### [at] peake42freeservecouk> wrote:
>
> >Been playing with 2 subjects - glass blobs in megapov, and Fibonacci's Golden
Ratio.
Put
> >them together here. Not easy finding a suitable background for glass stuff.
> >
> >Took 2.5 hours with Celeron 500 and megapov for dos.
>
> Very good!
>
> A minor remark, though. I can not see the whole sunflower so I can not
> tell, but in the real world, the number of left and right spirals in a
> sunflower petal are always members of the Fibonacci sequence. Is this
> what you're referring to?
>
>
> Peter Popov
> pet### [at] usanet
> ICQ: 15002700


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From: Alf Peake
Subject: Re: Dragonfly and Fibonacci (56k)
Date: 3 Mar 2000 19:08:26
Message: <38c053fa@news.povray.org>
SamuelT. <STB### [at] aolcom> wrote in message news:38BF2E96.7BFC065B@aol.com...
> Beautiful image.
>

Thank you Sir.
Bit stupid picking R, G and B glass and then JPEGing it I suppose but not too much
damage
was done.

Alf


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