Neat!
This evening I will try it!
;-)
Paolo

 >Bob  on date 05/02/2009 00:29 wrote:
> Thanks for posting this scene file. Had to play with it some.
> I changed it a little, trying to make the water paths more obvious but 
> I'm not sure I succeeded.
> All I did was add a texture layer onto the "bordo" going from dark to 
> clear for a wet concrete-look, also added exponent 0.67 to the water 
> reflection to darken that.
> 
> Image attached, without grass.
> #declare t_bordo=texture {
>     pigment {
>         granite
>         color_map {
>             [0.0 rgbft <0.7,0.7,0.7,0,0>]
>             [0.2 rgbft <0.7,0.7,0.7,0,0>]
>             [0.3 rgb <0.9, 0.8, 0.7>]
>             [0.5 rgbft <1,1,1,0,0>]
>             [1.0 rgbft <1,1,1,0,0>]
>         }
>         turbulence 0.5
>         scale 1.2
>     }
>     }
>     texture {
>     pigment {
>            gradient y
>         color_map {
>             [0.0 rgbf 1/5]
>             [0.525 rgbf 1/4]
>             [0.55 rgbft <0.25,0.25,0.25,0.5,0.5>]
>             [0.575 rgbft <0,0,0,1,1>]
>             [1.0 rgbft 1]
>         }
>         scale 50
>     }
>     normal {
>         granite
>         turbulence 0.5
>         slope_map {
>             [ 0.0    <1,0> ]
>             [ 0.6    <1,0> ]
>             [ 0.6    <1,-1> ]
>             [ 1.0    <0,0> ]
>         }
>         scale 1.2
>     }
>     scale 0.01
> }
> 
> 
> ------------------------------------------------------------------------
>

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