POV-Ray : Newsgroups : povray.documentation.inbuilt : Corrections to documented media defaults. : Re: Corrections to documented media defaults. Server Time
9 Dec 2023 09:08:54 EST (-0500)
  Re: Corrections to documented media defaults.  
From: William F Pokorny
Date: 16 Feb 2018 20:04:06
Message: <5a877f86$1@news.povray.org>
On 02/16/2018 01:44 PM, Alain wrote:
> Le 18-02-16 à 07:56, William F Pokorny a écrit :
>> On 02/15/2018 07:36 PM, Alain wrote:
> Then, the various defaults should be given for each sampling methods.
> Default :
> Sampling method = 3
> samples 10 (if you use two values, the second will be silently ignored)
> intervals 1 (Don't change as it drastically increase rendering time)
> confidance, variance are not used.
> Optional methods are 1 and 2. For those the defaults are :
> samples min 1 max 1
> intervals 10
> ...

Better documentation on what settings are used by each media method 
would be helpful for sure, but today the defaults set are the same no 
matter the method defaulted or set. In other words, there are not 
different defaults set for methods 1 & 2 should the user specify one of 
those in the media.

Aside: Not universally true, but often keywords and their settings can 
be given in any order in a block {}. Further you can often later in a 
parse refer to a defined 'item' and override some part of it. Useful, 
but this freedom makes having different default sets or sanity checking 
a group of settings for consistency during the parsing phase more 
difficult. The only place where I know we've today got some pseudo post 
parse checking is with patterns and in that case the extra verification 
happens only with the pavement and tiling patterns.

Bill P.

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