POV-Ray : Newsgroups : povray.newusers : filter? transmit? Server Time
5 Nov 2024 05:23:04 EST (-0500)
  filter? transmit? (Message 1 to 3 of 3)  
From: Paul Daniel Jones
Subject: filter? transmit?
Date: 3 Jan 2001 13:30:14
Message: <3A536FED.6E27623D@psu.edu>
Ok, after reading the manual and some back posts I am still a bit
be-fuddled.....

Could someone give me a quick rule of thumb as to when I might use
filter and when I might use transmit and in which POV version it applies
to? I seem to remember that MegaPOV handles these two statements
different than the official 3.1g.

Thanks....

paul
--
-------------------------------------------#
Paul Daniel Jones
120 Chandlee Laboratory
Penn State University
814-865-2090
pdj### [at] psuedu

http://research.chem.psu.edu/glassgrp/paul
--------------------------------------------#


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From: Ron Parker
Subject: Re: filter? transmit?
Date: 3 Jan 2001 14:05:54
Message: <slrn956u0k.baf.ron.parker@fwi.com>
On Wed, 03 Jan 2001 13:31:09 -0500, Paul Daniel Jones wrote:
>
>Ok, after reading the manual and some back posts I am still a bit
>be-fuddled.....
>
>Could someone give me a quick rule of thumb as to when I might use
>filter and when I might use transmit and in which POV version it applies
>to? I seem to remember that MegaPOV handles these two statements
>different than the official 3.1g.

Filter is used for things that are transparent, like colored glasses or
plastics.  Transmit is used for things that have lots of small holes,
like silk or nylon fabric.  

MegaPOV handles them that way in layered textures; the official version
treats them both as transmit (IIRC).  Both versions do the right thing
in most cases; it's just the layered textures case that's different.

-- 
Ron Parker   http://www2.fwi.com/~parkerr/traces.html
My opinions.  Mine.  Not anyone else's.


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From: Paul Daniel Jones
Subject: Re: filter? transmit?
Date: 3 Jan 2001 16:20:51
Message: <3A5397EF.92DF9493@psu.edu>
Oh, I see....

Thanks :-)

paul

Ron Parker wrote:

> On Wed, 03 Jan 2001 13:31:09 -0500, Paul Daniel Jones wrote:
> >
> >Ok, after reading the manual and some back posts I am still a bit
> >be-fuddled.....
> >
> >Could someone give me a quick rule of thumb as to when I might use
> >filter and when I might use transmit and in which POV version it applies
> >to? I seem to remember that MegaPOV handles these two statements
> >different than the official 3.1g.
>
> Filter is used for things that are transparent, like colored glasses or
> plastics.  Transmit is used for things that have lots of small holes,
> like silk or nylon fabric.
>
> MegaPOV handles them that way in layered textures; the official version
> treats them both as transmit (IIRC).  Both versions do the right thing
> in most cases; it's just the layered textures case that's different.
>
> --
> Ron Parker   http://www2.fwi.com/~parkerr/traces.html
> My opinions.  Mine.  Not anyone else's.

--
-------------------------------------------#
Paul Daniel Jones
120 Chandlee Laboratory
Penn State University
814-865-2090
pdj### [at] psuedu

http://research.chem.psu.edu/glassgrp/paul
--------------------------------------------#


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