How about using the inside of a cylinder, or carving a
curved section out of a box?

difference{
 box{<0,0,0>,<-5,5,-5>}
 cylinder{<0,-.1,0>,<0,5.1,0>,4}
 pigment{rgb 1}
}

Look at CSG merge, union, and especially difference and intersection
for this.

--
Tim Nikias v2.0
Homepage: http://www.digitaltwilight.de/no_lights
Email: Tim### [at] gmxde

> How can you create a smoothly curving rectangular plane with povray? Like
a
> smoothly curving wall? Thanks,
>
> David
>
> --
> Engineers aren't boring people, we just get excited about boring things.

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