Re: What to do wanting a 4th order Bézier?

[Hans Åberg]

> On 19 Sep 2016, at 20:25, David Kastrup <address@hidden> wrote:
> 
> Hans Åberg <address@hidden> writes:

>> Perhaps it looks better with the second derivatives lined up as well.
> 
> That precludes a straight line (second derivative 0) running into a
> circle arc (second derivative 1/(2pi r) or similar, too lazy to think
> about it right now).

It might be used to smooth ordinary 3rd degree polynomials. But if useful, it 
probably has already been done.