Define a BSpline surface, how can I obtain the parameter z by means of (x,y)?
In fact, I can give two parameters (u,v) to retrieve a point (gp_Pnt) by using the class method Value(u,v). On the contrary, how can I retrieve the z parameters, if giving two coordinates (x,y)?
I don’t know the class method “GeomAPI_ProjectPointOnSurf” is suitable to my question. Do you other methods for solving my problem?
Thank in advance!