With this definition, he could do CSG with the object and a cone/prism
representing the light source.

Pabs wrote:

> Jerry Stratton wrote:
>
> > Is there any way to use "no_image" with an object but still have it
> > *accept* (not cast) shadows? Or is there some other way for an object to
> > basically be invisible except for the shadows cast on it?
> > Basically I want to be able to have the background color show through,
> > but have 'drop shadows' from objects, for use on web pages and in
> > documents.
>
> Do you mean that if a particular intersection point on the object is in
> shadow (another object between it and any light source) then that
> intersection point __is__ counted as an intersection point but if it is not
> in shadow it isn't?
> Interesting idea!
> --
> Bye
> Pabs

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