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From: Sun Tzu
Subject: Muchos Huevos
Date: 15 Apr 2004 13:53:09
Message: <407ecc05@news.povray.org>
I was inspired by Andrew C's Easter post so I decided to make some eggs.
This is my first try at randomly placing a large number (3500) of objects
with a rudimentary test to avoid intersecting objects.  It ran last night on
a 2 GHz Pentium:  8 hours 45 minutes parse, 38 minutes trace.


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Preview of image 'egg11.jpg'
egg11.jpg


 

From: Rafal 'Raf256' Maj
Subject: Re: Muchos Huevos
Date: 15 Apr 2004 14:36:07
Message: <Xns94CCD17B250D6raf256com@203.29.75.35>
sun### [at] nospamhotmailcom news:407ecc05@news.povray.org

> I was inspired by Andrew C's Easter post so I decided to make some
> eggs. This is my first try at randomly placing a large number (3500)
> of objects with a rudimentary test to avoid intersecting objects.  It
> ran last night on a 2 GHz Pentium:  8 hours 45 minutes parse, 38
> minutes trace. 

Too wash-out colors.

-- 
http://www.raf256.com/3d/
Rafal Maj 'Raf256', home page - http://www.raf256.com/me/
Computer Graphics


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From: Tim Nikias v2 0
Subject: Re: Muchos Huevos
Date: 15 Apr 2004 15:36:54
Message: <407ee456@news.povray.org>
The eggs look cute, but as Rafal said, the colors seem a little washed out,
they'd do better with higher contrast.

That aside, what sort of collision-avoidance did you implement? There are a
variety of methods, but 9 hours for 3500 objects seems like a rather high
parsing time...

-- 
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>


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From: Jim Charter
Subject: Re: Muchos Huevos
Date: 15 Apr 2004 15:58:51
Message: <407ee97b$1@news.povray.org>
Isn't that Spanish slang?


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From: Sun Tzu
Subject: Re: Muchos Huevos
Date: 15 Apr 2004 15:59:11
Message: <407ee98f@news.povray.org>
I intentionaly made the colors 'pastel', but perhaps you're right that it
would look better with more brilliant colors.  Fortunately I wrote out the
xyz locations and gross sizes of the eggs to a txt file so I could try
different things without lengthy re-parse.

I've attached a revised image with darker colors for your comment.  I'm
unsure of the newsgroup etiquette (if any) that may apply regarding posting
of images in replies.  Let me know if this practice is contrary to some such
rule.  Thanks.

"Rafal 'Raf256' Maj" <spa### [at] raf256com> wrote in message
news:Xns94CCD17B250D6raf256com@203.29.75.35...
> sun### [at] nospamhotmailcom news:407ecc05@news.povray.org
>
> > I was inspired by Andrew C's Easter post so I decided to make some
> > eggs. This is my first try at randomly placing a large number (3500)
> > of objects with a rudimentary test to avoid intersecting objects.  It
> > ran last night on a 2 GHz Pentium:  8 hours 45 minutes parse, 38
> > minutes trace.
>
> Too wash-out colors.
>
> --
> http://www.raf256.com/3d/
> Rafal Maj 'Raf256', home page - http://www.raf256.com/me/
> Computer Graphics


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Attachments:
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egg12.jpg


 

From: Sun Tzu
Subject: Re: Muchos Huevos
Date: 15 Apr 2004 16:00:46
Message: <407ee9ee$1@news.povray.org>
LOL!   Yea, I believe that it is, but that wasn't my intent.


"Jim Charter" <jrc### [at] msncom> wrote in message
news:407ee97b$1@news.povray.org...
> Isn't that Spanish slang?


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From: SunTzu2
Subject: Re: Muchos Huevos
Date: 15 Apr 2004 16:15:00
Message: <web.407eec56f43298e8eba257cf0@news.povray.org>
"Tim Nikias v2.0" <#macro timnikias (@) #local = "gmx.net" #end> wrote:
....
> That aside, what sort of collision-avoidance did you implement? There are a
> variety of methods, but 9 hours for 3500 objects seems like a rather high
> parsing time...
>

I have no experience at all with collision avoidance methods and just did
the first thing that came to mind.  Doubtless it is hideously inefficient.
I just calculated the distance from each newly generated location to each
of the previous ones...   I can already think of a couple of ways to
improve on it.  I didn't even exit the loop as soon as a failure was
detected and just continued on checking all the previous locations!  haha.
If you have some information on different algorithms for this sort of thing
I'd be happy to see them.


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From: Florian Brucker
Subject: Re: Muchos Huevos
Date: 15 Apr 2004 17:22:27
Message: <407efd13@news.povray.org>
> I've attached a revised image with darker colors for your comment.  I'm
> unsure of the newsgroup etiquette (if any) that may apply regarding posting
> of images in replies.  Let me know if this practice is contrary to some such
> rule.  Thanks.

There's normally no problem with posting images in replies. Your images 
are a bit large, though. Perhaps scaling them a bit smaller next time 
would be a good idea :)

I like the stronger colors better, too, BTW :)

Florian


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From: Dave VanHorn
Subject: Re: Muchos Huevos
Date: 15 Apr 2004 18:19:35
Message: <407f0a77$1@news.povray.org>
Vaya con Huevos!


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From: Jellby
Subject: Re: Muchos Huevos
Date: 15 Apr 2004 18:21:53
Message: <407f0b01@news.povray.org>
Among other things, Jim Charter wrote:

> Isn't that Spanish slang?

Not really slang, just "many eggs".

-- 
light_source{9+9*x,1}camera{orthographic look_at(1-y)/4angle 30location
9/4-z*4}light_source{-9*z,1}union{box{.9-z.1+x clipped_by{plane{2+y-4*x
0}}}box{z-y-.1.1+z}box{-.1.1+x}box{.1z-.1}pigment{rgb<.8.2,1>}}//Jellby


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