- Qt 6.11
- Qt Positioning
- Clipper Polygon Clipping Library, version 6.4.2
- Qt 6.11.2 Reference Documentation

# Clipper Polygon Clipping Library, version 6.4.2

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

Used in the QML plugin of Qt Location and in Qt Positioning.

The sources can be found in qtpositioning/src/3rdparty/clipper.

Project Homepage, upstream version: 6.4.2

     Copyright Angus Johnson 2010-2017

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

     Boost Software License - Version 1.0 - August 17th, 2003
     http://www.boost.org/LICENSE_1_0.txt

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