I'm trying to make a coil of rope by revolving the 3.5 function
f_helix1 around an axis  and I just can't seem to it right

Has anyone done this before?

#declare F_Helix=
 function {f_helix1(x-1,y,z, 2, 20, 0.06, 0.04, 1, 1, 0)}

isosurface {
 function {F_Helix(x,sqrt(y^2+z^2),z)}
 max_gradient 2
 contained_by {box {-3,3}}
 pigment {White}
 rotate y*45
}

Thanks
Gail
--
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* gsh### [at] monotixcoza                *   Chaos, disorder and panic      *
* http://www.rucus.ru.ac.za/~gail/   *   My job here is done.           *
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* Just think of me as the storm before the calm     Magic: The Gathering*
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