POV-Ray : Newsgroups : povray.binaries.animations : Fun with mirrors (174kb) Server Time
19 Jul 2024 21:28:53 EDT (-0400)
  Fun with mirrors (174kb) (Message 15 to 24 of 24)  
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From: Mark James Lewin
Subject: Re: Fun with mirrors (174kb)
Date: 16 Jul 2002 00:56:35
Message: <3D33A863.5000807@yahoo.com.au>
Thanks!

MJL

Skip Talbot wrote:
> Sweet deal!  How about with radiosity and a high ambient on those cylinders?
> A setup like this with a story/concept behind it would have made a great
> entry in the overly complicated machines IRTC round.  Looking forward to the
> updated version.
> 
> Skip
> 
>


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From: Mark James Lewin
Subject: Fun with mirrors 2 (279kb)
Date: 16 Jul 2002 01:03:23
Message: <3D33A9EF.3050507@yahoo.com.au>
POV-Physics 6.5.9.6 - Fake laser beams will cast shadows unless created with 
no_shadow sources... doh. Thanks to everyone who pointed that out.

Here is an update, no shadows, slightly higher resolution.

MJL


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Attachments:
Download 'laser3.mpg' (279 KB)

From: Hugo
Subject: Re: Fun with mirrors 2 (279kb)
Date: 16 Jul 2002 03:50:39
Message: <3d33d04f@news.povray.org>
I saved it.  :o)  It's better, but still doesn't really look like 'light'..
But how did you calculate the position of the mirrors?

Regards,
Hugo


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From: Sir Charles W  Shults III
Subject: Re: Fun with mirrors (174kb)
Date: 16 Jul 2002 10:01:44
Message: <3d342748$1@news.povray.org>
No.  Light will not block the passage of light.

Cheers!

Chip Shults
My robotics, space and CGI web page - http://home.cfl.rr.com/aichip


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From: Samuel Benge
Subject: Re: Fun with mirrors 2 (279kb)
Date: 16 Jul 2002 14:28:53
Message: <3D3465E0.9030001@caltel.com>
Neat animation. Did you use two trace statements to get the beam to 
bounce off the mirrors and stop at the more diffuse objects?

I've got a couple suggestions, since the beam is a little hard to see:
  -dim the lights in the room
  -give the cylinders an emitting media with a cylindrical density. The 
density pattern can be rotated using the Reorient_Trans macro, I think.

Now if you're a real glutton for punishment, you can introduce convex 
mirrors and substitute some of the cylinders for cones :)

Mark James Lewin wrote:

> POV-Physics 6.5.9.6 - Fake laser beams will cast shadows unless created 
> with no_shadow sources... doh. Thanks to everyone who pointed that out.
> 
> Here is an update, no shadows, slightly higher resolution.
> 
> MJL


-- 
Samuel Benge

sbe### [at] caltelcom


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From: Mark James Lewin
Subject: Re: Fun with mirrors 2 (279kb)
Date: 16 Jul 2002 20:38:24
Message: <3D34BD68.5010407@yahoo.com.au>
Hugo wrote:
> I saved it.  :o)  It's better, but still doesn't really look like 'light'..

I know :-( This was meant to be a quick experiment, but maybe I'll try to improve 
the laser beam.

> But how did you calculate the position of the mirrors?

Most were easy (90 degree deflections). The others used simple trig.

MJL


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From: Mark James Lewin
Subject: Re: Fun with mirrors 2 (279kb)
Date: 16 Jul 2002 20:43:37
Message: <3D34BEA1.9020002@yahoo.com.au>
Samuel Benge wrote:
> Neat animation. Did you use two trace statements to get the beam to 
> bounce off the mirrors and stop at the more diffuse objects?

Yes, pretty much.

> 
> I've got a couple suggestions, since the beam is a little hard to see:
>  -dim the lights in the room
>  -give the cylinders an emitting media with a cylindrical density. The 
> density pattern can be rotated using the Reorient_Trans macro, I think.

I thought of doing that, but this was meant to be just an hour or so of 
entertainment. I'll see if it improves things though.

> 
> Now if you're a real glutton for punishment, you can introduce convex 
> mirrors and substitute some of the cylinders for cones :)

Ha! If you do this, you may as well shoot photons and ditch the cylinders 
altogether. You could use lenses then too.


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From: Greg M  Johnson
Subject: Re: Fun with mirrors (174kb)
Date: 17 Jul 2002 13:41:23
Message: <3d35ac43$1@news.povray.org>
Cool. Isn't it supposed to explode at the end?
or is that just all the more S for your ER?


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From: Marc van den Dikkenberg
Subject: Re: Fun with mirrors 2 (279kb)
Date: 19 Jul 2002 03:22:06
Message: <Mbw3PSWDONM9w+QTzXQNgbRxC8=U@4ax.com>
On Tue, 16 Jul 2002 15:06:55 +1000, Mark James Lewin
<m_j### [at] yahoocomau> wrote:

>POV-Physics 6.5.9.6 - Fake laser beams will cast shadows unless created with 
>no_shadow sources... doh. Thanks to everyone who pointed that out.
>
>Here is an update, no shadows, slightly higher resolution.

Looks good -- although it seems to me like the laserbeam is hitting the
little mirror on the center left for quite a while without a reflected beam
-- 
Marc van den Dikkenberg
--
The PowerBasic Archives -- http://www.xlsior.org


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From: Marc van den Dikkenberg
Subject: Re: Fun with mirrors (174kb)
Date: 19 Jul 2002 03:22:07
Message: <erw3Pdjo5jPu1WMQ5UF4B43Facea@4ax.com>
On Wed, 17 Jul 2002 13:40:17 -0400, "Greg M. Johnson"
<gregj:-)565### [at] aolcom> wrote:

>Cool. Isn't it supposed to explode at the end?
>or is that just all the more S for your ER?

It it would be powerful to explode something at the end, it wouldn't be a
very smart idea to reflect it straight back at the laser emitter, like it
does at the very beginning of the animation. :-)

-- 
Marc van den Dikkenberg
--
The PowerBasic Archives -- http://www.xlsior.org


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