I see it. Thank you very much.
I have another question. Looking at the following code please
// Define the ocean surface
plane { y, -10.0
   hollow on
   pigment { Aquamarine }
   normal {
      waves 0.06
      frequency 5000.0
      scale 1000.0
   }
   finish {
      ambient 0.1
      diffuse 0.1
      reflection 0.8
   }
}

I want to know where I can find the definition of the "Aquamarine". And also
where can I find some more definitions of this kind? What I need are lawn
and land. Thanks

Best Regards
Wu Yang

"hughes, b." <omn### [at] charternet> wrote in message
news:3dd2b3b9$1@news.povray.org...
> "Wu Yang" <wya### [at] cswrightedu> wrote in message
> news:3dd2a90f$1@news.povray.org...
> > height_field {
> >    png "fract003.png"
> >    water_level 0.4
> >    pigment {
> >       image_map { png "fract003.png" }
> >       rotate 90*x
> >    }
> >
> > I do not know what "rotate 90*x" means in pigment definition. I tried to
> > find in the help pages, but I did not find it. Could someone explain it
to
> > me? Thanks
>
> Just that the height_field is done on the xy plane and the image_map is
done
> on the xz plane so it needs to be turned to meet the same plane.
>
>

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