On Sat, 21 May 2005 19:13:53 EDT, "Ziyan" <beg### [at] hotmail com>
wrote:
>Then how could I create a beam through a piece glass? I mean the length of
>beam langer than that of glass. The beam inside and outside of glass should
>be all visible.
>
>Could you help me?
>
Surround the cylinder with a box that has scattering media, use
photons. Look at optics.pov in the sample scenes.
Regards
Stephen
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