I am getting back into the geometry world, to update one of my apps, to have some more abilities, first to get the calculation of the centroid/geometric center, implementation of a hoover alike [there is one class AcEdInputPointMonitor but does not work for what I need], I need to have all the closed polylines, one into each other and pass, the cursor and while is inside of the polyline, to provide the appropriate information, or to open an excel or table object and have that info/properties available... among other things...
le.