Clipper Polygon Clipping Library, version 6.4.0

The Clipper library performs line & polygon clipping - intersection, union, difference & exclusive-or, and line & polygon offsetting.

Used in the QML plugin of Qt Location.

The sources can be found in tqtc-qt5/qtlocation/src/3rdparty/clipper.

Project Homepage, upstream version: 6.4.0

 Copyright Angus Johnson 2010-2015

Boost Software License 1.0.

 Use, modification & distribution is subject to Boost Software License Ver 1.
 http://www.boost.org/LICENSE_1_0.txt

 Attributions:
 The code in this library is an extension of Bala Vatti's clipping algorithm:
 "A generic solution to polygon clipping"
 Communications of the ACM, Vol 35, Issue 7 (July 1992) pp 56-63.
 http://portal.acm.org/citation.cfm?id=129906

 Computer graphics and geometric modeling: implementation and algorithms
 By Max K. Agoston
 Springer; 1 edition (January 4, 2005)
 http://books.google.com/books?q=vatti+clipping+agoston

 See also:
 "Polygon Offsetting by Computing Winding Numbers"
 Paper no. DETC2005-85513 pp. 565-575
 ASME 2005 International Design Engineering Technical Conferences
 and Computers and Information in Engineering Conference (IDETC/CIE2005)
 September 24-28, 2005 , Long Beach, California, USA
 http://www.me.berkeley.edu/~mcmains/pubs/DAC05OffsetPolygon.pdf