POV-Ray : Newsgroups : povray.general : Tweaking PoV-Ray's epsilon value? : Re: Tweaking PoV-Ray's epsilon value? Server Time
4 Nov 2024 19:21:33 EST (-0500)
  Re: Tweaking PoV-Ray's epsilon value?  
From: Christopher James Huff
Date: 18 Oct 2003 22:20:35
Message: <cjameshuff-A8FCB0.22182318102003@netplex.aussie.org>
In article <3F8F0EF0.83A66CBE@gmx.de>,


> Is there a not too complicated way to modify the range of orders of
> magnitude to, let's say 1e-8 to 1e13, so that everything from amoeba to
> Pluto's orbit can be rendered within one scene, by hacking the code?

No. Not generally, anyway. The epsilon and infinity limits could 
probably be loosened a little without problems, but in general are 
needed. Remember that intermediate values for the computations can go 
quite a bit higher than the parameters you specify for the objects, and 
can easily exceed the precision of the computer. If you really need this 
range of precision, you should probably render the large-scale parts 
separately from the small-scale parts and composite them together...but 
I can't imagine why you would need this. In any image where a structure 
the size of Pluto is visible, you aren't likely to see anything the size 
of an ameboa.

-- 
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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