Hey  J osh
actually I have tried the cylinder stuff  but it gives me  what you can see
in the attachement
i mean some cuts appears on  the cylinder  when it  'moves' as i  don t know
how to avoid having them i was thinking that  a line would be the solution .
anyway thanks

Josh English wrote:

> In article <36B61CB4.435B38DC@yahoo.com>, kane <kan### [at] yahoocom> wrote:
>
> > hey guys
> > I am a novice in Ray tracing.I would like to know if it is possible
> > ,let's say ,to connect two points by one segment, just one segment (not
> > a torus or ...),and this without being obliged to work in  2D
>
> Perhaps I'm not understanding the question...
>
> you can create a cylinder with start and end points anywhere in 3D
> space...so there is no obligation to work in 2D.
>
> Now, if by segment you mean a line according to Euclidian Geometry, i.e.,
> a line that has length but no depth or width, then you're in trouble.
> Cylinders have to have a radius of some positive number, so you can start
> will 0.01 and adjust it to make it as small as possible and still visible,
> but you can't make a 1 pixel wide line like you can in most drawing
> programs or paint programs.
>
> SInce POV-Ray is a three dimensional modeller the building blocks are
> spheres, cubes, cones, cylinders, and torii. There are "flat" objects such
> as planes, discs, meshes, triangles, and patches, but even most of these
> get assigned an "inside" and "outside" in POV-Ray
>
> Please let me know if this helps or if I am completely off the mark...
> --
> Josh English
> eng### [at] spiritonecom
> www.spiritone.com/~english

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