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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
> 

This shape is called "lemon".

You can either:
 - find the isosurface equation for it.
 - ? use CSG of the torus with a cylinder (intersection)
   the hardest (not too hard) part being to compute the actuel height of
the pointy part... I'm not sure it work directly, you might need some
inverse somewhere.

Have fun at http://mathworld.wolfram.com/Lemon.html



- --
Eifersucht ist die Leidenschaft, die mit Eifer sucht, was Leiden schafft.
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