POV-Ray : Newsgroups : povray.binaries.animations : Glass marbles in a glass bowl with caustics (MPG, 662 KB) Server Time
1 Nov 2024 13:21:10 EDT (-0400)
  Glass marbles in a glass bowl with caustics (MPG, 662 KB) (Message 1 to 9 of 9)  
From: None
Subject: Glass marbles in a glass bowl with caustics (MPG, 662 KB)
Date: 2 Oct 2003 12:52:25
Message: <3f7c57c9@news.povray.org>
Thanks Jim, I've converted it to MPEG, it's still fairly good quality, even
in full screen.  I've been using Windows Media Video 9 for my tests, indeed
a very platform speficic format despite it's benefits for me.

BTW, it's in slow motion so you can see the marbles' surfaces.


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Attachments:
Download 'Marb2.mpg' (663 KB)

From: =Bob=
Subject: Re: Glass marbles in a glass bowl with caustics (MPG, 662 KB)
Date: 2 Oct 2003 14:29:13
Message: <3f7c6e79@news.povray.org>
Beautiful! Incredible! Wow!
=Bob=


"None" <Non### [at] onca> wrote in message news:3f7c57c9@news.povray.org...
: Thanks Jim, I've converted it to MPEG, it's still fairly good quality, even
: in full screen.  I've been using Windows Media Video 9 for my tests, indeed
: a very platform speficic format despite it's benefits for me.
: BTW, it's in slow motion so you can see the marbles' surfaces.


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From: Fernando Gonzalez del Cueto
Subject: Re: Glass marbles in a glass bowl with caustics (MPG, 662 KB)
Date: 2 Oct 2003 15:13:10
Message: <3f7c78c6$1@news.povray.org>
Very nice! Although, I think the gravity is too weak...


Fernando


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From: None
Subject: Re: Glass marbles in a glass bowl with caustics (MPG, 662 KB)
Date: 2 Oct 2003 15:19:00
Message: <Xns94089BBFED826None@204.213.191.226>
"=Bob=" <bob### [at] threestrandscom> wrote in news:3f7c6e79@news.povray.org:

> Beautiful! Incredible! Wow!

Thanks.


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From: None
Subject: Re: Glass marbles in a glass bowl with caustics (MPG, 662 KB)
Date: 2 Oct 2003 16:13:49
Message: <Xns9408A50A58BF4None@204.213.191.226>
"Fernando Gonzalez del Cueto" <fgd### [at] hotmailcom> wrote in 
news:3f7c78c6$1@news.povray.org:

> Very nice! Although, I think the gravity is too weak...

Thanks.  At first I though you may get the feeling that the gravity is too 
weak due to the fact that the animation is in slow motion.  The simulation 
time was 4 seconds but the animation plays for almost 9 seconds.  In the 
simulation the  gravitational acceleration is set to: -9.81 units per 
second squared in the Y coordinate.

Thinking about it some more, I realized you're in fact right.  The marbles 
and bowl are huge relative to the gravitational acceleration used.  The 
marbles have a radius of between 0.1 to 0.3 units (random).  Which, 
relative to g would make them 20 to 60 cm in diameter.  I need to either 
10x g or reduce the size of my objects so that they make sense in real 
world sizes.  Thanks for pointing that out!


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From: Rick [Kitty5]
Subject: Re: Glass marbles in a glass bowl with caustics (MPG, 662 KB)
Date: 2 Oct 2003 20:41:38
Message: <3f7cc5c2$1@news.povray.org>
Very nice!

source? <grin>
-- 
Rick

Kitty5 NewMedia http://Kitty5.com
POV-Ray News & Resources http://Povray.co.uk
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From: Fernando Gonzalez del Cueto
Subject: Re: Glass marbles in a glass bowl with caustics (MPG, 662 KB)
Date: 2 Oct 2003 22:34:57
Message: <3f7ce051$1@news.povray.org>

news:Xns### [at] 204213191226...
> "Fernando Gonzalez del Cueto" <fgd### [at] hotmailcom> wrote in
> news:3f7c78c6$1@news.povray.org:
>
> > Very nice! Although, I think the gravity is too weak...

> world sizes.  Thanks for pointing that out!

You're welcome :)


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From: None
Subject: Re: Glass marbles in a glass bowl with caustics (MPG, 662 KB)
Date: 2 Oct 2003 23:59:54
Message: <Xns9408F40ED176FNone@204.213.191.226>
"Rick [Kitty5]" <spa### [at] kitty5com> wrote in news:3f7cc5c2$1
@news.povray.org:

> Very nice!

Thanks.
 
> source? <grin>

Absolutely, I just need to finish up some work on the engine (still some 
anomalies under certain conditions), clean it up then I'll post.  I just 
keep finding bugs or better ways to do things.


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From: Jim Wyman
Subject: Re: Glass marbles in a glass bowl with caustics (MPG, 662 KB)
Date: 5 Oct 2003 17:20:01
Message: <web.3f808ad31965c4dc2e7b78770@news.povray.org>
None wrote:
>Thanks Jim, I've converted it to MPEG, it's still fairly good quality, even
>in full screen.  I've been using Windows Media Video 9 for my tests, indeed
>a very platform speficic format despite it's benefits for me.
>
>BTW, it's in slow motion so you can see the marbles' surfaces.
>

Many thanks for the change in format. :-)

Jim


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