Crackle seems to be pov's slowest pattern, and this technique accesses it 
multiple times.

-- 
Tek
http://evilsuperbrain.com

"Samuel Benge" <stb### [at] hotmailcom> wrote in message 
news:web.4890bfd54f928167ff8a991c0@news.povray.org...
> "Tek" <tek### [at] evilsuperbraincom> wrote:
>> Here's something I made using Sam's techinique, slightly adapted to allow
>> coloured pigments, and some photos I took of the london motorshow.
>>
>> My version of the  code is *really* inefficient, it took 48 minutes to
>> render at 1600x1200!
>
> Actually, my code is rather slow, too. It doesn't seem slow until you try 
> to
> make a height_field with it. Most height fields don't take that long to 
> parse!
> Isosurfaces don't seem to be affected in the same way.
>
> Sam
>

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