"pare03" <par### [at] gelulavalca> wrote:
> Exactly. Can it be done ?
>
> Warp <war### [at] tagpovrayorg> wrote:
> > pare03 <par### [at] gelulavalca> wrote:
> > > I am trying to create an object that will filter and diffuse light at the
> > > same time, so a structured light coming from one side of that object will
> > > be diffused by the object but will gain the texture/pigment of that object.
> >
> >   So basically you want for a light ray which passes through the object to
> > split into thousands of light rays going to slightly different directions?
> >
> > --
> >                                                           - Warp


Warp's trying to point out that the calculation time would be immense. It's
similar to the situation with trying to compute variable IOR.

You could get some diffusion by building your surface out of microlenses,
but it may not give you the result you want. FWIW, I've built a functional
Fresnel lens in POV.

Why not just fake your diffusion using caustics & media?

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