Am 09.02.2011 04:44, schrieb Robert McGregor:
> Well, after looking over some basic dielectric equations I came up with this
> simple POV-SDL setup for the following basic dielectric material in POV-Ray. The
> transparency and reflection of the material automatically tune themselves
> according to the material's IOR value:
>
> //------------------------------------------------------------------------------
> // Dielectric Ball
> /------------------------------------------------------------------------------
> global_settings { photons { spacing 0.01 } }
>
> #declare IOR   = 1.33;
> #declare REFL  = pow(((1-IOR)/(1+IOR)), 2);
> #declare TRANS = 1 - REFL;
>
> sphere { 0, 1
>     texture {
>        pigment { rgb 0 transmit TRANS }
>        finish {
>           reflection {0, REFL fresnel on } conserve_energy
>           specular REFL roughness 0.005
>        }
>     }
>     interior { ior IOR }
>     photons {
>        target
>        refraction on
>        reflection on
>        collect off
>     }
> }
>


Hmm, this does not look right to me - as far as I understand this 
dielectric matter. Sadly Kari Kivisalo seems to be no more around, the 
one that did just *know* such things.
Anyway it reminds me that I've never done any glass objects so thanks 
for the inspiration on that ;)

-Ive

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