you could do that currently by using the save point file and import point file commands.

So, rebuild your curve to your point count (Or you already have the curve with point count)

Show the points and copy and past them, then save the point file.

Importing the point file gives the option to bring it in as a polyline.

Maybe a scriptor can combine all of this into a single, realtime command...

Hi Fabien, yes your desired result does look like the control polygon of a curve so try doing a regular curve rebuild and then extracting the control polygon like Burr writes above. Yours kind of looks more like a quadratic curve's control polygon so you might try doing a FitCrv in Rhino with Degree=2 and see if that's closer or not.

> I think three would be too low to represent such a curve at all, no?

Yes I think so but that can kind of indicate that what you're asking for is not very well defined as a specific algorithm. A script needs to follow some specific steps.

- Michael