"helge_h" <nomail@nomail> wrote:
> I have no idea what this is, it just evolved, perhaps inspired by mops'
> corals (
>
http://news.povray.org/povray.binaries.images/thread/%3C43f75349%40news.povray.org%3E/
> ). Maybe it also is a reflective sphere on a checkered surface. :-)
>
> I used it to test a couple of texture (finish) macros:
>
> // ordinary finish:
>
> #macro _shinyness ( _g1 )
> finish {
>  ambient 0
>  diffuse min (1, (1.65 - _g1))
>  specular _g1
>  roughness 1 / pow (500, _g1)
>  reflection { 0.5 * max ( 0, _g1 - 0.65 ), 2 * max ( 0, _g1 - 0.65 ) }
> }
> #end
>
> // metal finish:
>
> #macro _metal ( _g1 )
> finish {
>  ambient 0
>  diffuse 1 - _g1
>  specular _g1 * 2
>  roughness 1 / pow (250, _g1)
>  metallic
>  reflection { _g1 / 2, _g1 metallic }
> }
> #end
>
> I think they work well, but I would be interested in comments. The parameter
> value should be 0.0 to 1.0, higher values makes the object more shiny. I
> have used several sources for the algorithms: mainly the good old
> StrataVision 4.0 and 3d World magazine.
>
> H

Great!.. Can you share metal texture?

Regards.
Hasan

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