Hmm... this is not exactly what I thought of... I wanted WHITE glass with a
smooth surface... You should not be able to look through it, so this sphere
should actually only appear as a shadow (if the light source is behind
it...) and never as a red circle....

Bob Hughes <per### [at] aolcom?subject=PoV-News:> schrieb in im
Newsbeitrag: 39070f4a@news.povray.org...
> Something like this perhaps might do okay.
>
> box {-1,1 scale <4,3,.1>
>  texture {
>   pigment { rgbft <1.5,1.5,1.5,.25,.125>}
>    normal {granite .15 scale .005}
>     finish {ambient .05 diffuse .5 specular .8 roughness .01 reflection
.15}
>   scale 2 // scale texture to suit object/scene size
>  }
>   interior {ior 1.5 caustics 1}
> }
>
> sphere {<0,0,1.5>,1 pigment {color red 1}}
>
> light_source { <-.5,1.25,-1.5> color rgb <1,.95,.9>
> }
> camera {
>   location  <1,.75,-2>
>   angle 65
>   look_at   <0, 0, 0>
> }
>
>
> Bob
>

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Could you please show me some code?

Wolfgang

Chris Huff <chr### [at] yahoocom> schrieb in im Newsbeitrag:
chrishuff_99-952867.19160725042000@news.povray.org...
> In article <39062EF7.1EFF9133@pacbell.net>, lin### [at] povrayorg
> wrote:
>
> > Using media densities is really not that slow in the official version.
> > It's when you use scattering media that things slow way down.
>
> You would have to use scattering media to get ground or frosted glass to
> work right. Emitting media might fake it under some special conditions,
> but it would be limited, and I think absorbing media would be useless
> for this.
>
> --
> Christopher James Huff - Personal e-mail: chr### [at] yahoocom
> TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
> Personal Web page: http://chrishuff.dhs.org/
> TAG Web page: http://tag.povray.org/

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I have posted images of modified versions of Bob's glass spheres in pbi.
Brendan Ryan

Wolfgang Illmeyer wrote:

> Hi, people.
>
> I already posted this in povray.programming, but they told me to post it
> here
>
> I'd like to produce some kind of street lamp, but it has some special kind
> of glass (somebody said 'ground glass', but I'm still not sure, if it's the
> right name), I can't produce...
> You should not be able to look through it, it should have a white color, and
> it should let the light through. And if there's light on the other side of
> the glass shining in the camera's direction, it should be visible on the
> glass....
> (This glass is used in these detective-films, for example; maybe you know
> these office-doors with the white glass and the black text on it....)
>
> Please help me
>
> Thanks in advance
> Wolfgang

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