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ITopologicalOperator.Intersect  V.S.  ITopologicalOperator6.IntersectEx?

Question asked by huangs3 on Feb 19, 2014
Latest reply on Feb 19, 2014 by huangs3
Hi Everybody:

    I am looking for a method to find the 3D intersection of two polylines with Z-coordinates.
    I checked the functions ITopologicalOperator.Intersect and  ITopologicalOperator6.IntersectEx. The difference is that IntersectEx has an additional boolean parameter bNonPlanar. What is this parameter for? Is it a switch to get the result in 3D?
    Thank you!