/******************************************************************************* * * * Author : Angus Johnson * * Version : 6.4.2 * * Date : 27 February 2017 * * Website : http://www.angusj.com * * Copyright : Angus Johnson 2010-2017 * * * * License: * * 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 * * * *******************************************************************************/ /******************************************************************************* * * * This is a translation of the Delphi Clipper library and the naming style * * used has retained a Delphi flavour. * * * *******************************************************************************/ /******************************************************************************* * Boost Software License - Version 1.0 - August 17th, 2003 * * * * Permission is hereby granted, free of charge, to any person or organization * * obtaining a copy of the software and accompanying documentation covered by * * this license (the "Software") to use, reproduce, display, distribute, * * execute, and transmit the Software, and to prepare derivative works of the * * Software, and to permit third-parties to whom the Software is furnished to * * do so, all subject to the following: * * * * The copyright notices in the Software and this entire statement, including * * the above license grant, this restriction and the following disclaimer, * * must be included in all copies of the Software, in whole or in part, and * * all derivative works of the Software, unless such copies or derivative * * works are solely in the form of machine-executable object code generated by * * a source language processor. * * * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * * FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT * * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE * * FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, * * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * * DEALINGS IN THE SOFTWARE. * *******************************************************************************/ /******************************************************************************* * * * Code modified for PdfPig * * * *******************************************************************************/ #nullable disable namespace UglyToad.PdfPig.Geometry.ClipperLibrary { internal class ClipperLocalMinima { public long Y; public ClipperTEdge LeftBound; public ClipperTEdge RightBound; public ClipperLocalMinima Next; } }