Re: [Gnuplot-info] plotting a knot on a torus

[Hans-Bernhard B. <HBB...@t-...>]

Am 04.01.2019 um 05:11 schrieb Brian Merchant:
> I plotted a torus, and a knot on it, using the following commands:

> However, if I plot a more complicated knot:
> 
> splot [-pi:pi][-pi:pi] (2 + cos(u))*cos(v), (2 + cos(u))*sin(v), sin(u),
> [-pi:pi][-pi:pi] (2 + cos(3*u))*cos(2*u), (2 + cos(3*u))*sin(2*u), sin(2*u),
> 
> then the knot's curve breaks :(  

I'm convinced that that's because that knot curve is not actually _on_
the torus.  It dives into it, and therefore hidden3d is doing exactly
what you asked it to.