OpenNurbs Knot and control vertex

openNURBS
1

Hi ,how can i get the knot and control vertex of a model ？

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i find a function that is Getspanknot(),but i failed too.

2

Hi @user230,

You should spend some time reading through the openNURBS header files - opennurbs_nurbscurve.h and opennurbs_nurbssurfaces.h, specifically, as there are a number of methods for retrieving control points and knots for each class, and the header files are well commented.

– Dale

3

thank u ,@dale, i would try . :grinning: :grinning:

4

i think i find it .yesterday i used a double s instead of a double array s.
really thank u .@dale