POV-Ray : Newsgroups : povray.general : Photons and continue trace Server Time
25 Dec 2024 14:16:52 EST (-0500)
  Photons and continue trace (Message 1 to 5 of 5)  
From: Tim Cook
Subject: Photons and continue trace
Date: 1 May 2003 12:46:51
Message: <3eb14f7b$1@news.povray.org>
Is there a way to get POV to check to make sure it actually
CAN continue a trace before spending three quarters of an
hour shooting photons?

-- 
Tim Cook
http://home.bellsouth.net/p/PWP-empyrean

-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
GFA dpu- s: a?-- C++(++++) U P? L E--- W++(+++)>$
N++ o? K- w(+) O? M-(--) V? PS+(+++) PE(--) Y(--)
PGP-(--) t* 5++>+++++ X+ R* tv+ b++(+++) DI
D++(---) G(++) e*>++ h+ !r--- !y--
------END GEEK CODE BLOCK------


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From: Thorsten Froehlich
Subject: Re: Photons and continue trace
Date: 1 May 2003 14:17:08
Message: <3eb164a4$1@news.povray.org>
In article <3eb14f7b$1@news.povray.org> , Tim Cook <z99### [at] bellsouthnet>
wrote:

> Is there a way to get POV to check to make sure it actually
> CAN continue a trace before spending three quarters of an
> hour shooting photons?

Yes, by specifying a image format that supports this?  Or what is your
question?

    Thorsten


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From: Tim Nikias v2 0
Subject: Re: Photons and continue trace
Date: 1 May 2003 14:29:25
Message: <3eb16785@news.povray.org>
How about saving the photons? You can reload
them and don't have to wait. Since you want to
continue a trace, you'll need the same photons
anyways.

Same applies to radiosity.

-- 
Tim Nikias v2.0
Homepage: http://www.digitaltwilight.de/no_lights
Email: Tim### [at] gmxde

> Is there a way to get POV to check to make sure it actually
> CAN continue a trace before spending three quarters of an
> hour shooting photons?
>
> -- 
> Tim Cook
> http://home.bellsouth.net/p/PWP-empyrean


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From: Andrew
Subject: Re: Photons and continue trace
Date: 1 May 2003 16:31:09
Message: <3eb1840d@news.povray.org>
> Is there a way to get POV to check to make sure it actually
> CAN continue a trace before spending three quarters of an
> hour shooting photons?


Couldn't you backup the png file and then try continuing the trace with
photons turned off?  Unless your parse time is enormous you should find
out quick enough.


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From: Christopher James Huff
Subject: Re: Photons and continue trace
Date: 1 May 2003 16:56:34
Message: <cjameshuff-1149F5.16563401052003@netplex.aussie.org>
In article <3eb164a4$1@news.povray.org>,
 "Thorsten Froehlich" <tho### [at] trfde> wrote:

> > Is there a way to get POV to check to make sure it actually
> > CAN continue a trace before spending three quarters of an
> > hour shooting photons?
> 
> Yes, by specifying a image format that supports this?  Or what is your
> question?

I think he's talking about the processing POV does before it figures out 
that it can't continue a trace. Looking at the source, it parses the 
scene and does a lot of initialization before it looks at the output 
file. It would be better to check this immediately after reading the 
command line and .ini file but before parsing.

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/


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