On 07/20/2015 02:27 AM, bakom wrote:
> Hi,
> I have a macro for torus as
>
> #include"transforms.inc"
> #macro Torus(Center, Normal, Radius1, Radius2)
> torus{ Radius1, Radius2 Reorient_Trans(y, Normal) translate Center }
> #end
>
> object {Torus (
> 1, 0, 0, 0, 0, 0, 2, 4)
> texture{ pigment{ LightBlue} }}
>
> How I modify it to make elliptical torus?

Are you looking for something like this?

http://lib.povray.org/collection/roundedge/cousin%20ricky%201.3/roundedge_05.jpg

This object is available from the Object Collection.  If it's what 
you're looking for, you can go to lib.povray.org and type RoundEdge into 
the search field.

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