POV-Ray : Newsgroups : povray.general : feature idea Server Time
13 Aug 2024 19:20:23 EDT (-0400)
  feature idea (Message 1 to 4 of 4)  
From: Wallaces
Subject: feature idea
Date: 31 Jul 1998 18:24:30
Message: <01bdbcc9$542b1580$3b062590@calvin>
How about a finish option that blurs light coming through it?  (As seen in
frosted glass, some glass shower doors, etc)  Now that we have the ability
to do this with the camera (focus), it might be easier to code.


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From: Dan Connelly
Subject: Re: feature idea
Date: 31 Jul 1998 20:07:12
Message: <35C24E33.6EFC849C@flash.net>
As I have noted elsewhere, Vue d'Esprit 2, the $100 (or so)
landscape renderer in the Bryce tradition (but much better,
IMHO), has this option.  It would be nice to see it implemented
in POV.

Dan

Wallaces wrote:
> 
> How about a finish option that blurs light coming through it?  (As seen in
> frosted glass, some glass shower doors, etc)  Now that we have the ability
> to do this with the camera (focus), it might be easier to code.

-- 
http://www.flash.net/~djconnel/


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From: Roland Mas
Subject: Re: feature idea
Date: 5 Aug 1998 20:45:07
Message: <m3iuk73szc.fsf@clodomir.rezel.enst.fr>
Dan Connelly <djc### [at] flashnet> writes:

> Wallaces wrote:
> > 
> > How about a finish option that blurs light coming through it?  (As seen in
> > frosted glass, some glass shower doors, etc)  Now that we have the ability
> > to do this with the camera (focus), it might be easier to code.
> 

  I think it would be hard to code and very time-consuming: you would
have to cast many new rays for each incoming ray, average them and take
this average as a parameter for the colour of your frosted glass. Of course,
you could keep some things in memory, but it then comes close to radiosity.
Maybe a modification in the radiosity code could do it?

  Anyway, why not?

Roland.
-- 

bob### [at] casimirrezelenstfr -- Linux, POV-Ray, LaTeX


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From: K  Tyler
Subject: Re: feature idea
Date: 5 Aug 1998 21:02:25
Message: <35C8E453.320F156@pacbell.net>
Mottled shower doors and frosted glass are easy to do now.
Have you ever heard the phrase "surface normals".

K.Tyler

Roland Mas wrote:

> Dan Connelly <djc### [at] flashnet> writes:
>
>  Wallaces wrote:
>  >
>  > How about a finish option that blurs light coming through it?  (As seen in
>  > frosted glass, some glass shower doors, etc)  Now that we have the ability
>  > to do this with the camera (focus), it might be easier to code.
>
>
>   I think it would be hard to code and very time-consuming: you would
> have to cast many new rays for each incoming ray, average them and take
> this average as a parameter for the colour of your frosted glass. Of course,
> you could keep some things in memory, but it then comes close to radiosity.
> Maybe a modification in the radiosity code could do it?
>
>   Anyway, why not?
>
> Roland.


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