farah inamdar wrote:

I am studying in Mtech cs. In my graduation i built software in java which has have most of functions like PowerPoint. So i am confident that i can handle this polygon edge related problem. just give me some guide lines. My Id is farahinamdar@gmail.com

The more challenging part will be implementing the concept based generic interfaces for the edge related types. I suggest you study the design and implementation of the concept based API already in Polygon and perhaps boost Graph and GIL. Regards, Luke