mirror of https://github.com/CGAL/cgal
110 lines
2.7 KiB
C++
110 lines
2.7 KiB
C++
// Copyright (c) 1997 Utrecht University (The Netherlands),
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// ETH Zurich (Switzerland), Freie Universitaet Berlin (Germany),
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// INRIA Sophia-Antipolis (France), Martin-Luther-University Halle-Wittenberg
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// (Germany), Max-Planck-Institute Saarbruecken (Germany), RISC Linz (Austria),
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// and Tel-Aviv University (Israel). All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; version 2.1 of the License.
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// See the file LICENSE.LGPL distributed with CGAL.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL$
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// $Id$
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//
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//
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// Author(s) : Wieger Wesselink, Geert-Jan Giezeman, Matthias Baesken
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// Window_stream I/O operators
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// ===========================
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// Polygon_2
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// ---------
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#ifdef CGAL_POLYGON_2_H
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#ifndef CGAL_WINDOW_STREAM_POLYGON_2_H
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#define CGAL_WINDOW_STREAM_POLYGON_2_H
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#if defined(CGAL_USE_CGAL_WINDOW)
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#include <list>
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#endif
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CGAL_BEGIN_NAMESPACE
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template <class Traits, class Container>
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Window_stream&
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operator<<(Window_stream& ws,
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const Polygon_2<Traits,Container> &polygon)
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{
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typedef typename Polygon_2<Traits,Container>::Edge_const_circulator EI;
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typedef typename Traits::Point_2 Point_2;
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EI e = polygon.edges_circulator();
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#if defined(CGAL_USE_CGAL_WINDOW)
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CGAL::color cl = ws.get_fill_color();
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if (cl != CGAL::invisible) {
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std::list<CGAL::window_point> LP;
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if (e != NULL) {
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EI end = e;
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do {
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Point_2 p = (*e).source();
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double x = CGAL::to_double(p.x());
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double y = CGAL::to_double(p.y());
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LP.push_back(CGAL::window_point(x,y));
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++e;
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} while (e != end);
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}
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ws.draw_filled_polygon(LP,cl);
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}
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#else
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leda_color cl = ws.get_fill_color();
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if (cl != leda_invisible) { // draw filled polygon ...
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leda_list<leda_point> LP;
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if (e != NULL) {
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EI end = e;
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do {
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Point_2 p = (*e).source();
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double x = CGAL::to_double(p.x());
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double y = CGAL::to_double(p.y());
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LP.append(leda_point(x,y));
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++e;
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} while (e != end);
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}
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ws.draw_filled_polygon(LP,cl);
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}
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#endif
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else {
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if (e != NULL) {
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EI end = e;
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do {
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ws << *e;
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ws << (*e).source();
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++e;
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} while (e != end);
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}
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}
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return ws;
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}
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CGAL_END_NAMESPACE
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#endif // CGAL_WINDOW_STREAM_POLYGON_2_H
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#endif // CGAL_POLYGON_2_H
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