[Ipe-discuss] simplify path feature?

[Nathaniel Cunningham]

Jason, you might want the algorithm to be a bit smarter: to pay attention
to spacing of points, for example, and adapt the number of points discarded
accordingly; and (more importantly) to keep more points, or most extreme
points ("corners") at locations where the curve direction changes rapidly.
But I agree, that even the simplest version you outline would be a good
addition, and the rest would just be refinement.

Surely there are already algorithms out there someplace to do this, that
would simply need to be incorporated into an ipelet?  Not sure where to
track such a thing down, though.

-- Nathaniel

On Mon, Apr 11, 2016 at 4:37 AM, Jason Miller <jasonpmil at gmail.com> wrote:

> Thanks!
>
> I would be personally happy with something even much simpler: namely an
> ipelet which converts a path made with the pen tool to a spline and keeps
> only 1 out of every k points where k is a user input.  (Paths made with a
> stylus seem to have such a huge number of points that one can take k quite
> large and still get something which looks almost exactly the same as the
> original path.)  In other words, it does not even have to be particularly
> smart about deciding which points to keep when simplifying the path.
>
> Best wishes,
>
> Jason
>
> > On Apr 11, 2016, at 11:10 AM, Otfried Cheong <otfried at ipe.airpost.net>
> wrote:
> >
> > Simplifying the curve when you draw with the pen is on my to-do list for
> > the next version.  I shouldn't be too hard to add an ipelet to simply a
> > curve afterwards as well - I don't think there is one publicly available
> > right now (would be a good exercise to learn to write ipelets :-)
> >
> > Cheers,
> > Otfried
> >
> > On Mon, Apr 11, 2016, at 01:05, Nathaniel Cunningham wrote:
> >> +1 for this ipelet request!  (Don't know of one already available)
> >>
> >> -- Nathaniel
> >>
> >> On Sun, Apr 10, 2016 at 4:13 AM, Jason Miller <jasonpmil at gmail.com>
> >> wrote:
> >>
> >>> Dear all,
> >>>
> >>> I was wondering if there exists an ipelet that would be able to
> simplify a
> >>> path that contains a huge number of points?  I have created some ipe
> >>> drawings using a stylus on my computer and the result is always very
> large
> >>> because ipe records such a high density of points.
> >>>
> >>> Thanks,
> >>>
> >>> Jason
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