/** * \file geom.h * \brief Various geometrical calculations * * Authors: * Nathan Hurst <njh@mail.csse.monash.edu.au> * * Copyright (C) 1999-2002 authors * * This library is free software; you can redistribute it and/or * modify it either under the terms of the GNU Lesser General Public * License version 2.1 as published by the Free Software Foundation * (the "LGPL") or, at your option, under the terms of the Mozilla * Public License Version 1.1 (the "MPL"). If you do not alter this * notice, a recipient may use your version of this file under either * the MPL or the LGPL. * * You should have received a copy of the LGPL along with this library * in the file COPYING-LGPL-2.1; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * You should have received a copy of the MPL along with this library * in the file COPYING-MPL-1.1 * * The contents of this file are subject to the Mozilla Public License * Version 1.1 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY * OF ANY KIND, either express or implied. See the LGPL or the MPL for * the specific language governing rights and limitations. * */ #ifndef LIB2GEOM_SEEN_GEOM_H #define LIB2GEOM_SEEN_GEOM_H //TODO: move somewhere else #include <vector> #include "point.h" namespace Geom { enum IntersectorKind { intersects = 0, parallel, coincident, no_intersection }; int intersector_ccw(const Geom::Point& p0, const Geom::Point& p1, const Geom::Point& p2); /* intersectors */ IntersectorKind line_intersection(Geom::Point const &n0, double const d0, Geom::Point const &n1, double const d1, Geom::Point &result); IntersectorKind segment_intersect(Geom::Point const &p00, Geom::Point const &p01, Geom::Point const &p10, Geom::Point const &p11, Geom::Point &result); IntersectorKind line_twopoint_intersect(Geom::Point const &p00, Geom::Point const &p01, Geom::Point const &p10, Geom::Point const &p11, Geom::Point &result); int centroid(std::vector<Geom::Point> p, Geom::Point& centroid, double &area); } #endif

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