POV-Ray : Newsgroups : povray.off-topic : Really deep Mandelbrot zoom : Re: Really deep Mandelbrot zoom Server Time
3 Sep 2024 23:29:54 EDT (-0400)
  Re: Really deep Mandelbrot zoom  
From: gregjohn
Date: 1 Nov 2010 18:55:01
Message: <web.4ccf451060f9d8cd34d207310@news.povray.org>
Warp <war### [at] tagpovrayorg> wrote:
> Invisible <voi### [at] devnull> wrote:
> > It's also very pink. I don't know what this was rendered with, but it
> > seems to have a 256-colour limit, meaning that the colours repeat a hell
> > of a lot. I did a zoom not unlike this using POV-Ray. Obviously the AA
> > is all over the place, but it does mean I have unlimited colours, and I
> > can map them as I see fit.
>
>   Naturally POV-Ray won't cut it for such a deep zoom because it will
> start glitching out at about 2^50 zoom factor (because 'double' only
> has 53 mantissa bits). You need a software with multiple-precision
> floating point numbers (or such a library, if you want to write the
> program yourself). Of course rendering such deep zooms with such a
> library will be slooooow (because software floating point is very slow,
> and the amount of iterations required for such zoom levels doesn't help
> the matter either).
>

Povray runs out of steam long before you hit *that* limitation because of the
artificially low limit of 32000 set for the iterations.


Post a reply to this message

Copyright 2003-2023 Persistence of Vision Raytracer Pty. Ltd.