"Rafal 'Raf256' Maj" <spa### [at] raf256com> wrote in message
news:Xns### [at] 204213191226...
> git### [at] wanadoofr news:3f0dd15b@news.povray.org
>
> >> > Recursion limit:  1
> >> 3..5 or more
> > This is definitely overkill. For practical purposes, recusion is not a
> > measure of quality. Most scenes look good enough with recursion 1,
> > many can
>
> I dissagree, I usualy use 4-5. It is very important in some scenes - for
> quick example imagin a maze with a light source far away, but with very
> white walls like rgb .9 diffuse .9
>
> ascii art :
>
> ####### ########
> <)    # #      #
> ##### ###  ### #
>     #      # # #
>     ######## # #
>             #   #
>             # * # <- light source
>             #####
> in scene as above with recursion limit 4 image will be 100% black, and
with
> recursion ~10 it will be o.k.
>
> using adc_bailout 1/128 will prevent "overkill" :) and it is not broken.
>
>
>
> --
> #macro
g(U,V)(.4*abs(sin(9*sqrt(pow(x-U,2)+pow(y-V,2))))*pow(1-min(1,(sqrt(
> pow(x-U,2)+pow(y-V,2))*.3)),2)+.9)#end#macro p(c)#if(c>1)#local
l=mod(c,100
> );g(2*div(l,10)-8,2*mod(l,10)-8)*p(div(c,100))#else 1#end#end
light_source{
> y 2}sphere{z*20
9pigment{function{p(26252423)*p(36455644)*p(66656463)}}}//M


    When you use 4 or 5 recursion limit, the time it takes to render must be
VERY long.  When I put it up that high EACH big square of the radiosity map
thing took like 30 seconds to a minute to render.

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