Mael wrote:
> 
> > http://www.schunter.etc.tu-bs.de/~chris/files/samples_simpov.png
> 
> it looks good, does it take a long time to create this distribution ?

I did not write down the time for that one but i later did some tests with
4000 points and it needed at least 1 hour to reach a usable state.

> Anyway, as far as radiosity speed is concerned it would be more interesting to
> find a way to make better use of the existing directions rather than adding
> more call to trace() :) For example would it be possible to use an adaptive
> number of samples ? it seems that when we specify "count 1600" povray will
> always shoot 1600 rays at samples locations, although there are probably some
> places where less rays are needed... The focal blur uses confidence/variance
> to decide when to stop sending rays. Do you think we can do something like
> this for radiosity ?

I have made some tests with adapting the count dynamically before:

http://www-public.tu-bs.de:8080/~y0013390/simpov/docu04.html

but the problem is to find a fast criteria for the adaptation.  As
explained concentrating the sample rays at a certain area might seem
logical but would be really tricky and possibly slow.  The method i used
just checks the distances of the intersection points which have to be
calculated anyway.  

Christoph

-- 
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Last updated 31 Dec. 2002 _____./\/^>_*_<^\/\.______

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