"Kontemplator" <haf### [at] yahoocom> wrote:

> try:
>
> vlength(V)
> Length of V. Returns a float value that is the length of vector V. Formula is
> vlength=sqrt(vdot(A,A)). Can be used to compute the distance between two points.
> Dist=vlength(V2-V1).

I think he wants the overall length of a ray - not just straight from the light
source, but after reflections, etc.

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