"LanuHum" <Lan### [at] yandexru> wrote:
> "And" <49341109@ntnu.edu.tw> wrote:
> > "LanuHum" <Lan### [at] yandexru> wrote:
> > > I looked here
> > > http://www.f-lohmueller.de/pov_tut/modelling/model_000e.htm
> > > and recalled Yoda with a dark side of force...
> > >
> > > Only 32 bicubic_patches build 10 kilometers of the curved railroad.
> >
> > Looks nice.
>
> Thanks.
> Here I bent a rail manually.
> Now I learn to build parallel Bezier curves. (in 3-D)
> It is necessary to automate process of a bend along a Bezier curve.

Parallel Bezier curve... sounds a challenge. I use Inkscape to do this operation
sometimes.(But only 2-D) Keep it up.

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