Thank you for looking into that issue. I apologize for providing only sparse information… So, yes, “this” is a multi-polygon. I think it helps to have all the information in one place, therefore I posted the detailed reply to your question in this boost Trac ticket:
If you have any more questions or suggestions, please do not hesitate!
Volker Schöch | email@example.com
Senior Software Engineer
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From: Geometry [mailto:firstname.lastname@example.org]
On Behalf Of Bruno Lalande
Sent: Dienstag, 9. April 2013 23:18
To: Boost.Geometry library mailing list
Subject: Re: [geometry] Move ctor or assignment for boost::geometry::model::ring?
This entirely depends on what "this" is, i.e. whether the class you are writing was correctly registered in Boost.Geometry as a geometry type to which a ring can be converted (ring, polygon...). Have you checked that?