On Fri, 12 Jul 2002 14:20:58 -0400, "Slime" <slm### [at] slimelandcom> wrote:

>Now, I'm aware that other programs like lightwave are able to create this
>effect much faster than POV-Ray does. But how do they do it?

It's simple - they construct a separate shadow map for media for every
scanline by projecting the meshes onto the plane defined by the
scanline and the camera origin using the light source as a projection
origin (multiple overlayed shadow maps merged into one in the case of
multiple light sources).


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG      e-mail : pet### [at] tagpovrayorg

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