POV-Ray : Newsgroups : povray.newusers : What is this warning? Bounded CSG union split Server Time
27 Nov 2024 19:22:21 EST (-0500)
  What is this warning? Bounded CSG union split (Message 1 to 5 of 5)  
From: Mark Hanford
Subject: What is this warning? Bounded CSG union split
Date: 16 Jul 2002 15:52:51
Message: <3d347993$1@news.povray.org>
What does this warning mean?

It flags the line which contains a reference to another included object.

Have I missed a list of warnings somewhere?

thanks
--

Mark Hanford


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From: Thorsten Froehlich
Subject: Re: What is this warning? Bounded CSG union split
Date: 17 Jul 2002 17:24:53
Message: <3d35e0a5@news.povray.org>
In article <3d347993$1@news.povray.org> , "Mark Hanford" 
<ren### [at] blueyondercouk> wrote:

> What does this warning mean?

That you had splitting of unions on but are also having a bounded_by in the
union.  What it implies is that the bounded_by has been removed because it
is redundant.

    Thorsten

____________________________________________________
Thorsten Froehlich, Duisburg, Germany
e-mail: tho### [at] trfde

Visit POV-Ray on the web: http://mac.povray.org


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From: Mark Hanford
Subject: Re: What is this warning? Bounded CSG union split
Date: 17 Jul 2002 18:24:44
Message: <3d35eeac$1@news.povray.org>
Shouldn't I bother with bounding boxes any more?

--

Mark Hanford
"Thorsten Froehlich" <tho### [at] trfde> wrote in message
news:3d35e0a5@news.povray.org...
> In article <3d347993$1@news.povray.org> , "Mark Hanford"
> <ren### [at] blueyondercouk> wrote:
>
> > What does this warning mean?
>
> That you had splitting of unions on but are also having a bounded_by
in the
> union.  What it implies is that the bounded_by has been removed
because it
> is redundant.
>
>     Thorsten
>
> ____________________________________________________
> Thorsten Froehlich, Duisburg, Germany
> e-mail: tho### [at] trfde
>
> Visit POV-Ray on the web: http://mac.povray.org


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From: Christopher James Huff
Subject: Re: What is this warning? Bounded CSG union split
Date: 17 Jul 2002 19:37:27
Message: <chrishuff-93D313.18321617072002@netplex.aussie.org>
In article <3d35eeac$1@news.povray.org>,
 "Mark Hanford" <ren### [at] blueyondercouk> wrote:

> Shouldn't I bother with bounding boxes any more?

You generally will only get an improvement over the automatic bounding 
with CSG difference or intersection...you can also get an improvement in 
certain cases with a large number of objects regularly spaced in a 
union, but that's a pretty special case.

In your case, because you had splitting of unions on, the bounding box 
was useless because the union was split into several separate objects.

-- 
Christopher James Huff <chr### [at] maccom>
POV-Ray TAG e-mail: chr### [at] tagpovrayorg
TAG web site: http://tag.povray.org/


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From: Warp
Subject: Re: What is this warning? Bounded CSG union split
Date: 17 Jul 2002 20:33:33
Message: <3d360cdc@news.povray.org>
Mark Hanford <ren### [at] blueyondercouk> wrote:
> Shouldn't I bother with bounding boxes any more?

  User-specified bounding boxes have been more or less obsolete since
POV-Ray 3.0.
  Only in certain cases a user-specified bounding box gives a better
result than the automatically calculated one (these cases include certain
CSG operations and blobs).

-- 
#macro M(A,N,D,L)plane{-z,-9pigment{mandel L*9translate N color_map{[0rgb x]
[1rgb 9]}scale<D,D*3D>*1e3}rotate y*A*8}#end M(-3<1.206434.28623>70,7)M(
-1<.7438.1795>1,20)M(1<.77595.13699>30,20)M(3<.75923.07145>80,99)// - Warp -


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