In article <3e0cb100@news.povray.org>, Warp <war### [at] tagpovrayorg> 
wrote:

>   I have thought about this same thing myself as well: How to create
> a semi-transparent shadow of an object, which is projected onto the surface
> of an invisible object (eg. a plane)?
>   There doesn't seem to be any viable and easy solution currently.

Well, the problem is that a shadow is the absence of light on a surface, 
not a "thing".
You could do something like an object whose transparency at a point is 
dependant on how brightly lit that point is. You might want to ignore 
any intersections with it after the first one. I don't think this would 
be very useful...

-- 
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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