"Bill DeWitt" <bde### [at] cflrrcom> wrote in message
news:3b504eff@news.povray.org...
>
>     Giving up on most of the available models I am attempting to model a
> bicycle in MegaPov myself using isosurfaces for the frame. Unfortunately,
my
> idea about blobbing cylinders is not working too well, because when you
> create a simple cylinder at an angle, it is somewhat flattened in one
> direction.
>
>     Is there a good way to rotate a function in isosurfaces before you
blob
> it?


    Sorry, here is what I am using now... I suspect I will need to make my
cylinders differently so that their end circles are tilted correctly.

#declare R = 0.25;

#declare  C1 = function { x*x + z*z - R*R }
#declare  C2 = function { y*y + z*z - R*R }

isosurface {
  function {   C1(x+y,y,z)
             * C2(x,y,z)
             - 0.001

             }
        method 1
        accuracy 0.001
        contained_by{sphere{0,3}}
        pigment {rgb .9}
        finish  { ambient 0.25 }
}

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