On 18 Oct 2001 02:50:48 -0400, Warp wrote:
>ingo <ing### [at] homenl> wrote:
>: That would mean we have a real 'soft light'.
>
>  It means that the caustics will simulate a lot better those of an area
>light instead of a point light.
>  The 'soft light' part is made by the shadow testing routine, which has
>little to do with photons (AFAIK).

Not entirely.  It's also a function of the diffuse illumination routine,
which determines the intensity of the light by the angle to the center
of the area light rather than by integrating the illumination over the
entire area of the area light.  Photons might be able to even that out
a little.

-- 
plane{-z,-3normal{crackle scale.2#local a=5;#while(a)warp{repeat x flip x}rotate
z*60#local a=a-1;#end translate-9*x}pigment{rgb 1}}light_source{-9red 1rotate 60
*z}light_source{-9rgb y rotate-z*60}light_source{9-z*18rgb z}text{ttf"arial.ttf"
"RP".01,0translate-<.6,.4,.02>pigment{bozo}}light_source{-z*3rgb-.2}//Ron Parker

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