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20 Jul 2024 09:27:20 EDT (-0400)
  24 hours - experimenting with radiosity (Message 1 to 2 of 2)  
From: Wlodzimierz ABX Skiba
Subject: 24 hours - experimenting with radiosity
Date: 7 May 2001 06:30:36
Message: <3af6794c@news.povray.org>
Can anybody advice me how to remove vibrations of color/lighting ?
I decreased pretrace_start but it rather not change behavior
Here are setting for radiosity

#declare ToMidnight=1-abs((_Hour+_Minute/60)-12)/12;
global_settings{
  ini_option "Antialias=yes"
  ini_option "Sampling_Method=2"
  ini_option "Antialias_Threshold=0.3"
  ini_option "Jitter=no"
  ini_option "Antialias_Depth=3"
  ini_option "Radiosity=yes"
  ambient_light sqrt(sqrt(ToMidnight^.25))
  assumed_gamma 1.2
  radiosity{
    pretrace_start 0.02
    pretrace_end   0.01
    count 80
    nearest_count 5
    error_bound 1
    recursion_limit 4
    low_error_factor .5
    gray_threshold 0.0
    minimum_reuse 0.015
    normal on
  }
}

ABX

--
#macro L(D)light_source{D*5D spotlight point_at-D falloff 25}#end#local C=0;L(
x)L(y)#macro G()#declare C=C+1;val(substr(concat("00000100200301001402002102",
"3030034040122141142143222242322341342343400401402403410414420421423430434440"
),C,1))#end L(z)camera{location 8look_at 0}union{#while(1e2>C)box{#local P=<G(
),G(),G()>*.4-1;P+.4P}#end box{-9 9}texture{pigment{rgb 1}}}// call me ABX :-)


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From: Christoph Hormann
Subject: Re: 24 hours - experimenting with radiosity
Date: 7 May 2001 08:26:54
Message: <3AF694AE.A9A9A0EC@gmx.de>
Wlodzimierz ABX Skiba wrote:
> 
> Can anybody advice me how to remove vibrations of color/lighting ?
> I decreased pretrace_start but it rather not change behavior
> Here are setting for radiosity
> 

You probably should increase count a lot, that should smooth things.  If
it's to slow then, you could use less strong antialiasing or reduce
'recursion_limit'.  Also 'minimum_reuse' and 'nearest_count' can be very
important.

Christoph 
    


-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/


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