Cloud Hidden Posted September 3, 2003 Share Posted September 3, 2003 Just looking for a point in the right direction... Have a point on the ground plane and want to find the z point on a nurbs surface at that x and y. Any ideas? I've read every function definition, but between nurbs nodes and knots and u's and v', I'm getting more than a little confused... Quote Link to comment
Cloud Hidden Posted September 5, 2003 Author Share Posted September 5, 2003 "GetParameterOnNurbsCurve (h:HANDLE;pointX:REAL;pointY:REAL;pointZ:REAL;VAR?parameter:REAL;VAR?index:LONGINT) :BOOLEAN ; Description: Given a NURBS curve handle and a point (in world space), this function returns the parameter of the point obtained by projecting the input point. The function also returns the index of the piece in the piecewise NURBS curve on which the projected point lies." Don't know if this works on surfaces, too, but a handle and a point is what I want to provide. But I don't understand "returns the parameter of the point obtained by projecting the input point" What is the parameter of a point? And in what direction is the input point projected? Seems like an input point could be projected in infinite directions. Quote Link to comment
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