POV-Ray : Newsgroups : povray.general : Media Scaling Problem Server Time
13 Aug 2024 03:10:24 EDT (-0400)
  Media Scaling Problem (Message 1 to 3 of 3)  
From: Lars Wolter
Subject: Media Scaling Problem
Date: 29 Nov 1998 16:46:07
Message: <3661c09f.0@news.povray.org>
Hi is there any way to scale Medias after declaring them without loosing
some of the Media Effects ?

greetings by Lars Wolter
www.snafu.de/~lars.wolter
E-Mail : lar### [at] snafude


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From: Ken
Subject: Re: Media Scaling Problem
Date: 29 Nov 1998 17:04:25
Message: <3661C452.3644AD19@pacbell.net>
There was a long thead on this subject on c.g.r.r. about 2-3
months ago. I believe the answer is no but you might try a
dejanews search with "media" as your subject and see what
pops up.

Ken Tyler

Lars Wolter wrote:

> Hi is there any way to scale Medias after declaring them without loosing
> some of the Media Effects ?
>
> greetings by Lars Wolter
> www.snafu.de/~lars.wolter
> E-Mail : lar### [at] snafude


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From: =Bob
Subject: Re: Media Scaling Problem
Date: 29 Nov 1998 21:05:28
Message: <3661fd68.0@news.povray.org>
Here's a possiblity.
Scale the media along with container object scale as follows.

 note! OS:SS of 1.5:.75, 1:1, .75:1.5, .5:2, .25:4, etc. approximates unioned 
equalization
 OS:SS of 2:.75, 1:1, .75:1.25, .5:1.5, .25:2, etc. approximates intersected 
equalization

This is from a media test file I'm using to figure media out better.
OS is object scale, SS is scattering scale (color*SS).
Unioned and intersected media is described in the help file under Multiple 
Media and Density.
I'm putting the test file onto my web site so anyone can check it out. There 
isn't any guarantee I've got it right yet, but from what I've seen the scaling 
does a fair approximation in the case of the test scene file concerning 
multiple media or density, and scattering.

 http://members.aol.com/xyzunknown/mediatest.htm

Message <3661c09f.0@news.povray.org>, Lars Wolter  typed...
>
>
>Hi is there any way to scale Medias after declaring them without loosing
>some of the Media Effects ?
>
>greetings by Lars Wolter
>www.snafu.de/~lars.wolter
>E-Mail : lar### [at] snafude
>
>
>

-- 
 omniVERSE: beyond the universe
  http://members.aol.com/inversez/POVring.html
=Bob


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