m.o.p.s wrote:
> Could you tell me if there is a simple way to build this shape. It's inside 
> a torus when major radius < minor radius. I realise one macro ( the blu 
> shape ) but it's empty, i would like to have this shape filled.
> thank you

#include "functions.inc"

isosurface {
   function {
     f_sphere(x+0.5*sin(f_th(x,z,y)),y+0.5*cos(f_th(x,z,y)),z, 1.0)
   }
   contained_by { box{-1, 1} }
}

The 1.0 is the minor radius, the two 0.5 the major radius.

Christoph

-- 
POV-Ray tutorials, include files, Landscape of the week:
http://www.tu-bs.de/~y0013390/ (Last updated 24 Jul. 2005)
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