"JC (Exether)" <no### [at] spamfr> wrote in message
news:3f66c7ba@news.povray.org...
> Is that what you want ?
>
> #declare T_G1=texture {
>    pigment {
>      gradient y
>      color_map {
>        [0.0 rgb 1.0]
>        [0.5 rgb 1.0]
>        [0.5 rgb 0.0]
>        [1.0 rgb 0.0]
>      }
>      scale 1/4
>    }
> }
>
> #declare T_G2=texture {
>    T_G1
>    translate <0,1/8,0>
> }
>
> sphere {
>    <0,1,0>, 1
>    texture {
>      radial
>      frequency 4
>      texture_map {
>        [0.0 T_G1]
>        [0.5 T_G1]
>        [0.5 T_G2]
>        [1.0 T_G2]
>      }
>    }
> }
>
>

Well, no. This is a traditional spherical squared board. I have a different
geometry in mind, where the sides of the squares are not the classical
meridians and paralels. I have the equations of such lines, but nothing
else.

Thanks again.

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