Are you looking to simulate translucent materials, as opposed to transparent
materials?  I normally bring in a scattering media in those circumstances.

"Mark Weyer" <wey### [at] informatikuni-freiburgde> wrote in message
news:3F7### [at] informatikuni-freiburgde...
> > Is there any way to implement materials that blur the image behind them?
> >
> > The degree of blur should be related to the path length of light passing
> > through a material so surface distortions won't work right.
>
> Don't know if it hits some of pov's limitations, but:
>
> Instead of using a material you might intersect your object with another
one.
> This second object is glass with bubbles inside, maybe some noise
isosurface
> or something like that.
> In that way the ray will be distorted whenever it passes a bubble and that
> will happen more times on thicker parts of the "material".
>
>
> -- 
> merge{#local i=-11;#while(i<11)#local
> i=i+.1;sphere{<i*(i*i*(.05-i*i*(4e-7*i*i+3e-4))-3)10*sin(i)30>.5}#end
> pigment{rgbt 1}interior{media{emission x}}hollow}//  Mark Weyer
>

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