This doesn't work either, but it might give you some ideas...

#include "colors.inc"

global_settings { assumed_gamma 2.2 }

light_source { < -20, 20, -20 > color White }

camera
{
 location < 0, 0, -10 >
 look_at < 0, 0, 0 >
}

#declare O_Ying =
union
{
    #declare R = 0;

    #while( R <= 1 )

        cylinder
        {
            < 0.0, 0.0, -0.002 >,
            < 0.0, 0.0, 0.002 >,
            R
            translate < 1.92 - R, 0, 0 >
            rotate R * R * R * 180 * z
        }

        #declare R = R + 0.01;

    #end
}

object
{
    O_Ying
    rotate -0.1 * y
    pigment { Red }
}

object
{
    O_Ying
    rotate 180 * z
    rotate 0.1 * y
    pigment { White }
}

"Paul Vanukoff" <van### [at] primenetcom> wrote in message
news:386a1908@news.povray.org...
>
> I'm trying to create a ying/yang sort of image. Here is some source that

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