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In article <3defdecb@news.povray.org>,
"Anthony D'Agostino" <sco### [at] spamE csicom> wrote:
> If this is true, then spheres are self-shadowing?
Only perfectly flat objects (plane, triangle, disc, polygon...) are not
self shadowing. Any object that has a shadow line will have a slightly
different one with an area light. (ignore boxes and linear spline prisms
are self shadowing but only the shading of the surfaces will be
different)
> I understand, but is this also true if I remove the area_light altogether,
> use ambient 1 for the geometry of the light only, and render with GI on?
> This seems to produce results that are less accurate than with area_light.
That is because radiosity itself is either inaccurate or slow. Doing
that is more of a trick that abuses the radiosity feature...each
algorithm is better at different things.
--
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/
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