How get the Polylines which creat by the same contour plane in MakeRhinoContours() ? (c++)

Hi:
In the this sample, if I set input.m_bAddOutputToDocument = false, all the Polylines out will add in ON_SimpleArray<ON_Polyline*> pline_array (target object is mesh), how can I get the Polylines which creat by the same contour plane ?

Hi @pythonuser,

I am not sure I understand the question. But If you want to know which polyline was generated from which input object, then contour each object independently.

– Dale