William F Pokorny <ano### [at] anonymousorg> wrote:
> Interesting. If life allows, I'll take a look at what you have posted
> this coming weekend.
>
> This concept image reminded me of an incomplete attempt I made a couple
> years back to convert the Illuminating Engineering Society's .ies files
> for the 3D light patterns about commercial light fixtures into spherical
> transmission maps on spheres around lights in Povray.
>
> Bill P.

That sounds very near. I ever saw the IES light profile, too.
This one I did is produced by the POV-Ray itself. You can design the shape of
the lamp, and give it a name and an emission object in it, then use pov-ray's
animation to pre-trace it. Then, use the output images as maps to render the
lighting effect.
                                        Cheng han Tsai

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