POV-Ray : Newsgroups : povray.binaries.images : First image posting : Re: First image posting Server Time
17 May 2021 18:56:00 EDT (-0400)
  Re: First image posting  
From: Thomas de Groot
Date: 3 May 2021 07:33:04
Message: <608fdf70$1@news.povray.org>
Op 3-5-2021 om 11:11 schreef jr:
> hi,
> 
> Thomas de Groot <tho### [at] degrootorg> wrote:
>> Op 03/05/2021 om 09:19 schreef jr:
>>> ...
>> I conclude from that [thread], that aa is the ray-tracing answer to mipmapping,
>> and I guess that my initial suggestion of stochastic aa is the correct one.
> 
> taking the 'El Capitan' cliff face as an example, say I want to render two
> images: object near base of, and object some distance from.  then I need to
> choose a scale for the texture(s)?  I think that I (as in "numpty" etc) would
> benefit from having some row/col table, in the documentation and or as array, of
> all parameters involved ("lambda", "octave", such) by scale/suggested distance
> (in POV-units?).  (and perhaps a macro which expands to the texture at the given
> scale/index)  (just thinking aloud :-))
> 
Yes, I guess that is the crucial point here. Otoh, It can also be solved 
by using a much simpler texture for the background, involving the same 
colour_map scaled down, and without all the fancy stuff...

> 
> regards, jr.
> 
> btw, re "graveyards".  had to put on an anorak, even for a cursory read.  :-)
> found out that what I associate with "granite" really is "dolerite".  thanks.
> 
<grin> They are often mixed-up.

-- 
Thomas


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