Getting the on curve points of a nurbs curve

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Permalink Reply by Danny Boyes on November 4, 2013 at 8:14am

I use this piece of code in a ghpython component. (you will need to download and install the GHA if you haven't already got it... click the link)

import rhinoscriptsyntax as rs

P = rs.CurveEditPoints(C)

Where P is the output and C is the input

Attachments:

• EditPts.ghuser, 2 KB

Permalink Reply by David Rutten on November 4, 2013 at 9:01am

Hi Marcus,

the points aren't enough. To fully duplicate a nurbs curve via Interpolate Curve logic you need greville-points, stand and end tangents, periodicity flag and a knot spacing algorithm. And even then you'll have a hard time with curves that have kinks in them.

--

David Rutten

david@mcneel.com

Seattle, WA