If I am not mistaken, ior stands for "Index of Refraction".

Daniel Hargreaves wrote:

> I have been using Glass 3 (the same setting from POV, not the ones
> provided with Moray). I have noticed that the IOR has been moved inside
> of the interior statement, but where has refraction gone to? My glass
> spheres have taken a very different personality, which I just don't like
> as much. I guess my question is what do I need to do to get moray 3.1 to
> do glass spheres like moray 3.0?
>
> Here are my Moray 3.0 settings for the glass:
> #declare Glass3 =
>    texture  // Glass3
>    {
>       pigment
>       {
>          color rgbf <0.98, 0.98, 0.98, 0.9>
>       }
>       finish
>       {
>          ambient 0.1
>          diffuse 0.1
>          phong 1.0
>          phong_size 100.0
>          specular 0.8
>          roughness 0.0003
>          reflection 0.1
>          refraction on  ior 1.45
>       }
>    }
>
> This is what Moray 3.1 is converting them to:
> #declare Glass3 =
>    material  // Glass3
>    {
>       texture
>       {
>          pigment
>          {
>             color rgbf <0.98, 0.98, 0.98, 0.9>
>          }
>          finish
>          {
>             ambient 0.1
>             diffuse 0.1
>             phong 1.0
>             phong_size 100.0
>             specular 0.8
>             roughness 0.0003
>             reflection 0.1
>          }
>       }
>       interior
>       {
>          ior 1.45
>       }
>    }



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