Hello, Anthony D  Baye. I would draw some pictures to show the technique which I
said: using reflection to make highlight of the water. But before doing this, I
just saw that you use prisms to simulate the floor. I just know this, and Um...,
it contains a problem, maybe you have known it. When we 'difference' or
'intersection' a union of a large number of objects with any other object, it
will extremly slow down the rendering. It is just very slow. So a union contains
a large number of objects actually shouldn't do 'difference' or 'intersection'
anymore.


I show a example:
A 100x100 tilings. It took only 1 second to render.



#declare one_piece =
union{
    box{
    <0.005, 0.005, 0>, <0.395, 0.395, 0.01>
    }
    cylinder{
    <0.02, 0, 0>, <0.38, 0, 0>, 1
    scale <1,0.18,0.02>
    translate <0, 0.2, 0.01>
    }
    pigment{
    rgb<0.4,0.6,0.6>
    }
}

#declare the_tiling =
union{
    #for(i, 0, 99)
        #for(j, 0, 99)
            object{
            one_piece
            translate <i*0.4, j*0.4, 0>
            }
        #end
    #end
}


the_tiling

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